Observational Studies on the Evolution of Protoplanetary Disks in Diverse Environments

2019 Fiscal Year Annual Research Report

• Project Area: A Paradigm Shift by a New Integrated Theory of Star Formation: Exploring the Expanding Frontier of Habitable Planetary Systems in Our Galaxy
• Project/Area Number: 18H05441
• Research Institution: Ibaraki University
• Principal Investigator: 百瀬 宗武 茨城大学, 理工学研究科(理学野), 教授 (10323205)
• Co-Investigator(Kenkyū-buntansha): 長田 哲也 京都大学, 理学研究科, 教授 (80208016) ; 野村 英子 国立天文台, 科学研究部, 教授 (20397821) ; 本田 充彦 岡山理科大学, 生物地球学部, 准教授 (40449369) ; 武藤 恭之 工学院大学, 教育推進機構(公私立大学の部局等), 准教授 (20633803) ; 安井 千香子 国立天文台, TMT推進室, 助教 (00583626)
• Project Period (FY): 2018-06-29 – 2023-03-31
• Keywords: 電波天文学 / 光学赤外線天文学 / 理論天文学 / 惑星起源・進化 / 原始惑星系円盤

Outline of Annual Research Achievements

アルマ高解像度観測では，ダスト成長を促進するダスト濃集領域や惑星存在を示唆する構造の検出で進展があった。Herbig Fe型星HD142527に付随する円盤内では，ガス・ダスト比が方位角に沿って1桁近く変化しており，ダスト濃集領域ではより大きなサイズのダストが集積していることが明らかになった。同様のガス・ダスト分布の違いは，CR Cha の動径構造でも検出された。一方，円盤構造に関する研究では，TW Hyaの円盤中に，形成途上の惑星に付随する可能性がある小スケールのダスト高密度領域を初検出した。
次に，円盤の水の振る舞いのうち水氷に関しては，前年度に行ったSubaru/IRCSのL-band偏光分光観測機能を用いた HD142527原始惑星系円盤の空間分解観測について，結果の詳細なモデリングを進めた。この天体に関しては，氷の存在比が Pollackら(1994)によるダストモデルで説明できることが分かった。一方水蒸気に関しては，アルマによって得られたHerbig Ae型星HD163296に付随する原始惑星系円盤の水蒸気輝線フラックスの上限値とモデル計算との比較から，スノーラインの位置が20au以内にあるという制限を与えた。
最後に円盤の統計的性質に着目した研究では，牡牛座領域における中質量星に付随する円盤13個の近赤外線高分散分光観測の成果を発表した。進化段階初期の円盤では恒星風と磁気降着が見られた一方，進化後期段階の円盤では円盤風と磁気降着が見られたことから，円盤内のガス流構造が円盤の不透明度と密接な関係にあることが示唆された。また，せいめい望遠鏡の整備を進め，赤外線偏光撮像装置のクライオスタットの外形とオフナー・リレー光学系を設計・製作した。この設計に沿って偏光を分離し波長2バンドの検出器上に再結像するための部品調達を全て完了し，来年度以降の組み立て準備が整った。

Current Status of Research Progress

2: Research has progressed on the whole more than it was originally planned.

Reason

以下の通り，全ての研究テーマで概ね予定通りの進捗が得られた。
まず円盤の高解像度画像の解析では，順調に研究成果を挙げる一方，並行してスパースモデリングを取り入れた電波干渉計の新しい画像作成法の開発にも取り組み始めた。この手法が確立されれば，これまでに比べてより不完全なデータからでも小スケールの構造を抽出できる可能性が広がり，既に取得されているデータの再解析を通じてより大きなサンプルに基づく統計的議論が可能になると期待される。
水に関しては，まず近赤外線分光観測で水氷の検出が可能な天体としては最も若い段階にあると考えられるHL Tauに対して，Subaru/IRCS-POLを用いた波長2.8 - 4.2μm偏光分光を行った。これと並行して，JWST による熱赤外(波長3μm以上に相当)円盤散乱光観測の検討や，SPICAを用いた波長44μmの氷フィーチャーの検出可能性を検討した。また，水蒸気に関してはガス化学モデルの整備を進めつつ，激しい降着により円盤が高温となりスノーラインの制約が与えられやすいFU Ori型星のアルマ観測を提案し，それが採択された。すでに取得したデータから水輝線フラックスの上限値が求められ，モデル計算から円盤性質に制限を与える解析を現在進めている。
惑星形成の環境依存性を議論する上で鍵を握る低金属量領域に関する研究についても，複数の論文出版の準備が整うなど，順調な進捗を見せている。具体的には，ASTE望遠鏡で取得された炭素原子微細構造線データに基づく分子雲内部への紫外線浸透に関する議論や，低金属環境下での高密度コアの質量分布関数をアルマで初めて取得した点が挙げられる。星団環境下での円盤存在の統計的議論を科学目標に据えた，せいめい望遠鏡の新装置についても，設計と部品調達を完了し，当初の計画通り来年度から装置の組み上げと試験観測の段階へと進む準備が整った。

Strategy for Future Research Activity

予定通りの進捗が得られていることを踏まえ，引き続き当初計画に沿って着実に研究を進めつつ，新展開の芽となる成果が得られた際には臨機応変に研究の力点をシフトする方策を取る。
円盤観測についてはこれまで同様，アルマの高解像観測を中心に研究を進めていく。これまでの方向性の継続に加え，新たな展開として，現在検討中の電波干渉計データの新しい画像作成手法の確立とその適用，及び，残骸円盤の統計的性質の解明に着手する。原始惑星系円盤の研究については理論的研究を主導している計画研究A01, A02との連携を強化するとともに，残骸円盤に関しては完成された系外惑星の研究を行っている計画研究A03, B03班との連携を強化する。残骸円盤については，アルマへの観測提案の準備も進める。
円盤内の水の振る舞いについても，水氷フィーチャーを捉えられるSubaru/IRCSのL-band偏光分光機能を，様々な進化段階の円盤や星周構造へと適用し，水が円盤へと持ち込まれる過程についての観測的情報を得る。また，アルマを用いた水蒸気放射の観測結果を円盤モデルと比較して，円盤スノーラインに関してこれまで以上に厳しい制約を課すことを目指す。
星団観測については多波長観測を継続し，惑星形成の環境依存性を議論する基礎を与える星形成過程の金属量依存性を明らかにする。また，せいめい望遠鏡新装置は令和3年度以降の科学観測開始を目指し，装置の組み上げと試験観測を進める。
このほか研究体制の面では，円盤の高解像度観測と銀河系外縁部の研究に携わる特任助教1名と研究員1名に加えて，残骸円盤に関わる研究を推進する研究員1名を加え，計3名とする。昨年度までと同様，それぞれの研究テーマでの成果獲得に加え，総括班が主導するラボローテーションを通じて，グループ内だけでなく領域全体の連携をはかる役割の一翼を担う。

Research Products

• [Int'l Joint Research] Jet Propulsion Laboratory/California Institute of Technology/Space Telescope Science Institute(米国)
  • Country Name: U.S.A.
  • Counterpart Institution: Jet Propulsion Laboratory/California Institute of Technology/Space Telescope Science Institute
  • # of Other Institutions: 3
• [Int'l Joint Research] リヨン大学/IPAG(フランス)
  • Country Name: FRANCE
  • Counterpart Institution: リヨン大学/IPAG
• [Int'l Joint Research] ビクトリア大学(カナダ)
  • Country Name: CANADA
  • Counterpart Institution: ビクトリア大学
• [Int'l Joint Research] 台湾中央研究院/国立清華大学(その他の国・地域)
  • Country Name: その他の国・地域
  • Counterpart Institution: 台湾中央研究院/国立清華大学
• [Int'l Joint Research] 工学院大学/茨城大学/国立天文台(日本)
  • Country Name: JAPAN
  • Counterpart Institution: 工学院大学/茨城大学/国立天文台
  • # of Other Institutions: 2
• [Int'l Joint Research]
  • # of Other Countries: 2
• [Journal Article] Scattering-induced Intensity Reduction: Large Mass Content with Small Grains in the Inner Region of the TW Hya disk (2020)
  • Author(s): Ueda, T., Kataoka, A., & Tsukagoshi, T.
  • Journal Title: The Astrophysical Journal Volume: 893 Pages: id.125
  • DOI: 10.3847/1538-4357/ab8223
  • Peer Reviewed / Open Access
• [Journal Article] Magnetic field structure of the Galactic plane from differential analysis of interstellar polarization (2020)
  • Author(s): Zenko, T., Nagata, T., Kurita, M., Kino, M., Nishiyama, S., Matsunaga, N., & Nakajima, Y.
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 72 Pages: id.27
  • DOI: 10.1093/pasj/psaa001
  • Peer Reviewed
• [Journal Article] Model of a Gap Formed by a Planet with Fast Inward Migration (2020)
  • Author(s): Kanagawa, K. D., Nomura, H., Tsukagoshi, T., Muto, T., & Kawabe, R.
  • Journal Title: The Astrophysical Journal Volume: 892 Pages: id.83
  • DOI: 10.3847/1538-4357/ab781e
  • Peer Reviewed / Open Access
• [Journal Article] Distortion of Magnetic Fields in BHR 71 (2020)
  • Author(s): Kandori, R., Tamura, M., Saito, M., Tomisaka, K., Matsumoto, T., Tazaki, R., Nagata, T., Kusakabe, N., Nakajima, Y., Kwon, J., Nagayama, T., & Tatematsu, K.
  • Journal Title: The Astrophysical Journal Volume: 892 Pages: id.128
  • DOI: 10.3847/1538-4357/ab7b68
  • Peer Reviewed / Open Access
• [Journal Article] The effect of surface gravity on line-depth ratios in the wavelength range 0.97-1.32 um (2020)
  • Author(s): Jian, M., Taniguchi, D., Matsunaga, N., Kobayashi, N., Ikeda, Y., Yasui, C., Kondo, S., Sameshima, H., Hamano, S., Fukue, K., Arai, A., Otsubo, S., & Kawakita, H.
  • Journal Title: Monthly Notices of the Royal Astronomical Society Volume: 494 Pages: 1724-1734
  • DOI: 10.1093/mnras/staa834
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Possible progression of mass flow processes around young intermediate-mass stars based on high-resolution near-infrared spectroscopy. I. Taurus (2020)
  • Author(s): Yasui, C., & Winered Team
  • Journal Title: American Astronomical Society Meeting Abstracts Volume: 52 Pages: id. 272.08
• [Journal Article] Subaru Near-infrared Imaging Polarimetry of Misaligned Disks around the SR 24 Hierarchical Triple System (2020)
  • Author(s): Mayama, S., Perez, S., Kusakabe, N., Muto, T. (4番目), Tsukagoshi, T. (5番目), Momose, M. (16番目), et al. (著者数 68)
  • Journal Title: The Astronomical Journal Volume: 159 Pages: id. 12
  • DOI: 10.3847/1538-3881/ab5850
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] The Detection of Dust Gap-ring Structure in the Outer Region of the CR Cha Protoplanetary Disk (2020)
  • Author(s): Kim, S., Takahashi, S., Nomura, H., Tsukagoshi, T., Lee, S., Muto, T., Dong, R., Hasegawa, Y., Hashimoto, J., Kanagawa, K., Kataoka, A., Konishi, M., Liu, H. B., Momose, M., Sitko, M., & Tomida, K.
  • Journal Title: The Astrophysical Journal Volume: 888 Pages: id. 72
  • DOI: 10.3847/1538-4357/ab5d2b
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Distortion of Magnetic Fields in a Starless Core. VI. Application of Flux Freezing Model and Core Formation of FeSt 1-457 (2020)
  • Author(s): Kandori, R., Tomisaka, K., Saito, M., Tamura, M., Matsumoto, T., Tazaki, R., Nagata, T., Kusakabe, N., Nakajima, Y., Kwon, J., Nagayama, T., & Tatematsu, K.
  • Journal Title: The Astrophysical Journal Volume: 888 Pages: id. 120
  • DOI: 10.3847/1538-4357/ab6081
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Identification of Absorption Lines of Heavy Metals in the Wavelength Range 0.97-1.32 μm (2020)
  • Author(s): Matsunaga, N., Taniguchi, D., Jian, M., Ikeda, Y., Fukue, K., Kondo, S., Hamano, S., Kawakita, H., Kobayashi, N., Otsubo, S., Sameshima, H., Takenaka, K., Tsujimoto, T., Watase, A., Yasui, C., & Yoshikawa, T.
  • Journal Title: The Astrophysical Journal Supplement Series Volume: 246 Pages: id. 10
  • DOI: 10.3847/1538-4365/ab5c25
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Chemistry in carbon-rich protoplanetary disks: Effect of carbon grain destruction (2020)
  • Author(s): Wei, C.-E., Nomura, H., Lee, J.-E., Ip, W.-H., Walsh, C., & Millar, T. J.
  • Journal Title: IAU Symposium Volume: 345 Pages: 289-290
  • DOI: 10.1017/S1743921318008633
  • Int'l Joint Research
• [Journal Article] ALMA observations of sulfur-bearing molecules in protoplanetary disks (2020)
  • Author(s): Nomura, H., Higuchi, A., Sakai, N., Yamamoto, S., Nagasawa, M., Tanaka, K. K., Miura, H., Nakamoto, T., Tanaka, H., Yamamoto, T., Walsh, C., & Millar, T. J.
  • Journal Title: IAU Symposium Volume: 345 Pages: 360-361
  • DOI: 10.1017/S1743921319002072
  • Int'l Joint Research
• [Journal Article] 原始惑星系円盤の有機分子と硫黄系分子：モデルとALMA観測 (2020)
  • Author(s): 野村英子，樋口あや，坂井南美，山本智，長沢真樹子，田中今日子，三浦均，中本泰史，田中秀和，山本哲生，Catherine Walsh，Tom J. Millar
  • Journal Title: 低温科学 Volume: 78 Pages: 165-172
  • Peer Reviewed / Open Access
• [Journal Article] Searching for methylamine in Orion-KL using ALMA archival data (2020)
  • Author(s): Minamoto, H., Oya, Y., Tomoya, H., & Nomura, H.
  • Journal Title: IAU Symposium Volume: 345 Pages: 386-387
  • DOI: 10.1017/S1743921319002965
• [Journal Article] Possibility to locate the position of the H2O snowline in protoplanetary disks through spectroscopic observations (2020)
  • Author(s): Notsu, S., Nomura, H., Walsh, C., Honda, M., Hirota, T., Akiyama, E., Tsukagoshi, T., Booth, A. S., & Millar, T. J.
  • Journal Title: IAU Symposium Volume: 345 Pages: 393-395
  • DOI: 10.1017/S1743921319003053
  • Int'l Joint Research
• [Journal Article] Distortion of Magnetic Fields in the Dense Core CB81 (L1774, Pipe 42) in the Pipe Nebula (2020)
  • Author(s): Kandori, R., Tamura, M., Saito, M., Tomisaka, K., Matsumoto, T., Tazaki, R., Nagata, T., Kusakabe, N., Nakajima, Y., Kwon, J., Nagayama, T., & Tatematsu, K.
  • Journal Title: The Astrophysical Journal Volume: 890 Pages: id. 14
  • DOI: 10.3847/1538-4357/ab67c5
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] 14N/15N Isotopic Ratio in CH3CN of Titan's Atmosphere Measured with ALMA (2020)
  • Author(s): Iino, T., Sagawa, H., & Tsukagoshi, T.
  • Journal Title: The Astrophysical Journal Volume: 890 Pages: id. 95
  • DOI: 10.3847/1538-4357/ab66b0
  • Peer Reviewed
• [Journal Article] Distortion of magnetic fields in Barnard 68 (2020)
  • Author(s): Kandori, R., Tamura, M., Saito, M., Tomisaka, K., Matsumoto, T., Kusakabe, N., Kwon, J., Nagayama, T., Nagata, T., Tazaki, R., & Tatematsu, K.
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 72 Pages: id. 8
  • DOI: 10.1093/pasj/psz127
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Near-infrared Imaging of a Spiral in the CQ Tau Disk (2020)
  • Author(s): Uyama, T., Muto, T. (2番目), Mawet, D., et al. (著者数 30)
  • Journal Title: The Astronomical Journal Volume: 159 Pages: id. 118
  • DOI: 10.3847/1538-3881/ab7006
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Distortion of Magnetic Fields in Barnard 335 (2020)
  • Author(s): Kandori, R., Saito, M., Tamura, M., Tomisaka, K., Matsumoto, T., Tazaki, R., Nagata, T., Kusakabe, N., Nakajima, Y., Kwon, J., Nagayama, T., & Tatematsu, K.
  • Journal Title: The Astrophysical Journal Volume: 891 Pages: id. 55
  • DOI: 10.3847/1538-4357/ab6f07
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Unidentified infrared emission features in mid-infrared spectrum of comet 21P/Giacobini-Zinner (2020)
  • Author(s): Ootsubo, T., Kawakita, H., Shinnaka, Y., Watanabe, J., & Honda, M.
  • Journal Title: Icarus Volume: 338 Pages: id. 113450
  • DOI: 10.1016/j.icarus.2019.113450
  • Peer Reviewed
• [Journal Article] FOREST unbiased Galactic plane imaging survey with the Nobeyama 45 m telescope (FUGIN). VII. molecular fraction of HI clouds (2020)
  • Author(s): Nakanishi, H., Fujita, S., Tachihara, K., Izumi, N., Matsuo, M., Umemoto, T., Oasa, Y., & Inoue, T.
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 72 Pages: 掲載決定
  • Peer Reviewed
• [Journal Article] ALMA Observations of Layered Structures due to CO Selective Dissociation in the Roh Ophiuchi A Plane-parallel PDR (2019)
  • Author(s): Yamagishi, M., Hara, C., Kawabe, R., Nakamura, F., Kamazaki, T., Takekoshi, T., Shimajiri, Y., Nomura, H., Takakuwa, S., & Di Francesco, J.
  • Journal Title: The Astrophysical Journal Volume: 875 Pages: id. 62
  • DOI: 10.3847/1538-4357/ab0d80
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Dust Continuum Emission and the Upper Limit Fluxes of Submillimeter Water Lines of the Protoplanetary Disk around HD 163296 Observed by ALMA (2019)
  • Author(s): Notsu, S., Akiyama, E., Booth, A., Nomura, H., Walsh, C., Hirota, T., Honda, M., Tsukagoshi, T., & Millar, T. J.
  • Journal Title: The Astrophysical Journal Volume: 875 Pages: id. 96
  • DOI: 10.3847/1538-4357/ab0ae9
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Fe I Lines in 0.91-1.33 λm Spectra of Red Giants for Measuring the Microturbulence and Metallicities (2019)
  • Author(s): Kondo, S., Fukue, K., Matsunaga, N., Ikeda, Y., Taniguchi, D., Kobayashi, N., Sameshima, H., Hamano, S., Arai, A., Kawakita, H., Yasui, C., Izumi, N., Mizumoto, M., Otsubo, S., Takenaka, K., Watase, A., Asano, A., Yoshikawa, T., & Tsujimoto, T.
  • Journal Title: The Astrophysical Journal Volume: 875 Pages: id. 129
  • DOI: 10.3847/1538-4357/ab0ec4
  • Peer Reviewed / Open Access
• [Journal Article] JCMT BISTRO Survey: Magnetic Fields within the Hub-filament Structure in IC 5146 (2019)
  • Author(s): Wang, J.-W., Lai, S.-P., Eswaraiah, C., Nagata, T. (94番目), et al. (著者数 132)
  • Journal Title: The Astrophysical Journal Volume: 876 Pages: id. 42
  • DOI: 10.3847/1538-4357/ab13a2
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] The JCMT BISTRO Survey: The Magnetic Field in the Starless Core Roh Ophiuchus C (2019)
  • Author(s): Liu, J., Qiu, K., Berry, D., Nagata, T. (99番目), et al. (著者数 130)
  • Journal Title: The Astrophysical Journal Volume: 877 Pages: id. 43
  • DOI: 10.3847/1538-4357/ab0958
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Dust Polarization in Four Protoplanetary Disks at 3 mm: Further Evidence of Multiple Origins (2019)
  • Author(s): Harrison, R. E., Looney, L. W., Stephens, I. W., Li, Z.-Y., Yang, H., Kataoka, A., Harris, R. J., Kwon, W., Muto, T., & Momose, M.
  • Journal Title: The Astrophysical Journal Letters Volume: 877 Pages: id. L2
  • DOI: 10.3847/2041-8213/ab1e46
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] ALMA survey of Class II protoplanetary disks in Corona Australis: a young region with low disk masses (2019)
  • Author(s): Cazzoletti, P., Manara, C. F., Baobab Liu, Muto, T. (18番目), et al. (著者数22)
  • Journal Title: Astronomy and Astrophysics Volume: 626 Pages: id. A11
  • DOI: 10.1051/0004-6361/201935273
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] The JCMT BISTRO Survey: The Magnetic Field of the Barnard 1 Star-forming Region (2019)
  • Author(s): Coude S., Bastien, P., Houde, M., Nagata, T. (85番目), et al. (著者数 121)
  • Journal Title: The Astrophysical Journal Volume: 877 Pages: id. 88
  • DOI: 10.3847/1538-4357/ab1b23
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Discovery of An au-scale Excess in Millimeter Emission from the Protoplanetary Disk around TW Hya (2019)
  • Author(s): Tsukagoshi, T., Muto, T., Nomura, H., Kawabe, R., Kanagawa, K. D., Okuzumi, S., Ida, S., Walsh, C., Millar, T. J., Takahashi, S. Z., Hashimoto, J., Uyama, T., & Tamura, M.
  • Journal Title: The Astrophysical Journal Letters Volume: 878 Pages: id. L8
  • DOI: 10.3847/2041-8213/ab224c
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Dust Polarization in Protoplanetary Disks: Evidence for Multiple Mechanisms at Work (2019)
  • Author(s): Harrison, R. E., Looney, L., Stephens, I., Li, Z.-Y., Yang, H., Kataoka, A., Harris, R. J., Kwon, W., Muto, T., & Momose, M.
  • Journal Title: 74th International Symposium on Molecular Spectroscopy Volume: NA Pages: RG02
  • DOI: 10.15278/isms.2019.RG02
  • Open Access / Int'l Joint Research
• [Journal Article] Effect of dust size and structure on scattered-light images of protoplanetary discs (2019)
  • Author(s): Tazaki, R., Tanaka, H., Muto, T., Kataoka, A., & Okuzumi, S.
  • Journal Title: Monthly Notices of the Royal Astronomical Society Volume: 485 Pages: 4951-4966
  • DOI: 10.1093/mnras/stz662
  • Peer Reviewed
• [Journal Article] First Detection of A-X (0,0) Bands of Interstellar C2 and CN (2019)
  • Author(s): Hamano, S., Kawakita, H., Kobayashi, N., Takenaka, K., Ikeda, Y., Matsunaga, N., Kondo, S., Sameshima, H., Fukue, K., Yasui, C., Mizumoto, M., Otsubo, S., Watase, A., Yoshikawa, T., & Kobayashi, H.
  • Journal Title: The Astrophysical Journal Volume: 881 Pages: id. 143
  • DOI: 10.3847/1538-4357/ab2e0f
  • Peer Reviewed
• [Journal Article] Modelling Infrared Line Spectra of Complex Organic Molecules in Protoplanetary Disks (2019)
  • Author(s): Nomura, H., Wei, C.-E., Walsh, C., & Millar, T. J.
  • Journal Title: AAS/Division for Extreme Solar Systems Abstracts Volume: 51 Pages: id. 324.12
  • Open Access / Int'l Joint Research
• [Journal Article] ALMA Reveals a Misaligned Inner Gas Disk inside the Large Cavity of a Transitional Disk (2019)
  • Author(s): Mayama, S., Akiyama, E., Panic, O., Miley, J., Tsukagoshi, T., Muto, T., Dong, R., De Leon, J. P., Mizuki, T., Daehyeon, O., Hashimoto, J., Sai, J., Currie, T., Takami, M., Grady, C. A., Hayashi, M., Tamura, M., & Inutsuka, S.
  • Journal Title: AAS/Division for Extreme Solar Systems Abstracts Volume: 51 Pages: id. 501.04
  • Open Access / Int'l Joint Research
• [Journal Article] The First Detection of 13C17O in a Protoplanetary Disk: A Robust Tracer of Disk Gas Mass (2019)
  • Author(s): Booth, A. S., Walsh, C., Ilee, J. D., Notsu, S., Qi, C., Nomura, H., & Akiyama, E.
  • Journal Title: The Astrophysical Journal Letters Volume: 882 Pages: id. L31
  • DOI: 10.3847/2041-8213/ab3645
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] An Observational Study for Grain Dynamics in the AS 209 Disk with Submillimeter Polarization (2019)
  • Author(s): Mori, T., Kataoka, A., Ohashi, S., Momose, M., Muto, T., Nagai, H., & Tsukagoshi, T.
  • Journal Title: The Astrophysical Journal Volume: 883 Pages: id.16
  • DOI: 10.3847/1538-4357/ab3575
  • Peer Reviewed
• [Journal Article] Determination of 14N/15N of CH3CN in Titan's atmosphere with ALMA (2019)
  • Author(s): Iino, T., Sagawa, H., & Tsukagoshi, T.
  • Journal Title: EPSC-DPS Joint Meeting 2019 Volume: 13 Pages: 2019-956-1
  • Open Access
• [Journal Article] First Subarcsecond Submillimeter-wave [C I] Image of 49 Ceti with ALMA (2019)
  • Author(s): Higuchi, A. E., Saigo, K., Kobayashi, H., Iwasaki, K., Momose, M., Soon, K. L., Sakai, N., Kunitomo, M., Ishihara, D., & Yamamoto, S.
  • Journal Title: The Astrophysical Journal Volume: 883 Pages: id. 180
  • DOI: 10.3847/1538-4357/ab3d26
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Super-resolution Imaging of the Protoplanetary Disk HD 142527 using Sparse Modeling (2019)
  • Author(s): Yamaguchi, M., Akiyama, K., Kataoka, A., Tsukagoshi, T., Muto, T., Ikeda, S., Fukagawa, M., Honma, M., & Kawabe, R.
  • Journal Title: Astronomical Data Analysis Software and Systems XXVII Volume: 523 Pages: id. 637
  • Open Access
• [Journal Article] Interstellar extinction law toward the Galactic center. IV. J, H, and Ks bands from VVV red clump stars (2019)
  • Author(s): Nagatomo, S., Nagata, T., & Nishiyama, S.
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 71 Pages: id. 106
  • DOI: 10.1093/pasj/psz093
  • Peer Reviewed
• [Journal Article] Unveiling Dust Aggregate Structure in Protoplanetary Disks by Millimeter-wave Scattering Polarization (2019)
  • Author(s): Tazaki, R., Tanaka, H., Kataoka, A., Okuzumi, S., & Muto, T.
  • Journal Title: The Astrophysical Journal Volume: 885 Pages: id. 52
  • DOI: 10.3847/1538-4357/ab45f0
  • Peer Reviewed
• [Journal Article] The ALMA Survey of 70μm Dark High-mass Clumps in Early Stages (ASHES). I. Pilot Survey: Clump Fragmentation (2019)
  • Author(s): Sanhueza, P., Contreras, Y., Wu, B., Jackson, J. M., Guzman, A. E., Zhang, Q., Li, S., Lu, X., Silva, A., Izumi, N., Liu, T., Miura, R. E., Tatematsu, K., Sakai, T., Beuther, H., Garay, G., Ohashi, S., Saito, M., Nakamura, F., Saigo, K., Veena, V. S., Nguyen-Luong, Q., & Tafoya, D.
  • Journal Title: The Astrophysical Journal Volume: 886 Pages: id.102
  • DOI: 10.3847/1538-4357/ab45e9
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Possible Progression of Mass-flow Processes around Young Intermediate-mass Stars Based on High-resolution Near-infrared Spectroscopy. I. Taurus (2019)
  • Author(s): Yasui, C., Hamano, S., Fukue, K., Kondo, S., Sameshima, H., Takenaka, K., Matsunaga, N., Ikeda, Y., Kawakita, H., Otsubo, S., Watase, A., Taniguchi, D., Mizumoto, M., Izumi, N., & Kobayashi, N.
  • Journal Title: The Astrophysical Journal Volume: 886 Pages: id. 115
  • DOI: 10.3847/1538-4357/ab45ee
  • Peer Reviewed
• [Journal Article] Investigating the gas-to-dust ratio in the protoplanetary disk of HD 142527 (2019)
  • Author(s): Momose, M.
  • Journal Title: ALMA2019: Science Results and Cross-Facility Synergies Volume: NA Pages: id.102
  • DOI: 10.5281/zenodo.3585402
  • Open Access
• [Journal Article] Discovery of a localized excess in the millimeter emission of the protoplanetary disk around TW Hya (2019)
  • Author(s): Tsukagoshi, T.
  • Journal Title: ALMA2019: Science Results and Cross-Facility Synergies Volume: NA Pages: id.133
  • DOI: 10.5281/zenodo.3585467
  • Open Access
• [Journal Article] A significant feature in the general relativistic time evolution of the redshift of photons coming from a star orbiting Sgr A* (2019)
  • Author(s): Saida, H., Nishiyama, S., Ohgami, T., Takamori, Y., Takahashi, M., Minowa, Y., Najarro, F., Hamano, S., Omiya, M., Iwamatsu, A., Takahashi, M., Gorin, H., Kara, T., Koyama, A., Ohashi, Y., Tamura, M., Nagatomo, S., Zenko, T., & Nagata, T.
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 71 Pages: id. 120
  • DOI: 10.1093/pasj/psz111
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Investigating the gas-to-dust ratio in the protoplanetary disk of HD 142527 (2019)
  • Author(s): Soon, K.-L., Momose, M., Muto, T., Tsukagoshi, T., Kataoka, A., Hanawa, T., Fukagawa, M., Saigo, K., & Shibai, H.
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 71 Pages: id. 124
  • DOI: 10.1093/pasj/psz112
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] ALMA による原始惑星系円盤の高解像度観測 (2019)
  • Author(s): 武藤恭之
  • Journal Title: 日本惑星科学会誌 Volume: 28 Pages: 190-199
  • DOI: 10.14909/yuseijin.28.3_190
  • Peer Reviewed / Open Access
• [Journal Article] 惑星形成領域からの様々なガス輝線のALMA観測 (2019)
  • Author(s): 野村英子
  • Journal Title: 日本惑星科学会誌 Volume: 28 Pages: 200-206
  • DOI: 10.14909/yuseijin.28.3_200
  • Peer Reviewed / Open Access
• [Journal Article] アルマ望遠鏡が若い恒星うみへび座TW星に見出した惑星形成の種 (2019)
  • Author(s): 塚越 崇
  • Journal Title: 日本惑星科学会誌 Volume: 28 Pages: 207-212
  • DOI: 10.14909/yuseijin.28.3_207
  • Peer Reviewed / Open Access
• [Journal Article] 原始惑星系円盤の電波観測入門(1)：惑星系の母胎を探る (2019)
  • Author(s): 百瀬宗武
  • Journal Title: 日本惑星科学会誌 Volume: 28 Pages: 213 - 225
  • DOI: 10.14909/yuseijin.28.3_213
  • Peer Reviewed / Open Access
• [Journal Article] HD142527に付随する原始惑星系円盤のガス・ダスト比 (2019)
  • Author(s): スン・カンロウ，百瀬宗武，武藤恭之，塚越崇，片岡章雅，花輪知幸，深川美里，西合一矢，芝井広
  • Journal Title: 日本惑星科学会誌 Volume: 28 Pages: 295- 304
  • DOI: 10.14909/yuseijin.28.4_295
  • Peer Reviewed / Open Access
• [Journal Article] Nobeyama 45 m mapping observations toward the nearby molecular clouds Orion A, Aquila Rift, and M17: Project overview (2019)
  • Author(s): Nakamura, F., Ishii, S., Dobashi, K., Shimoikura, T., Shimajiri, Y., Kawabe, R., Tanabe, Y., Hirose, A., Oyamada, S., Urasawa, Y., Takemura, H., Tsukagoshi, T., Momose, M., Sugitani, K., Nishi, R., Okumura, S., Sanhueza, P., Nguyen-Luong, Q., & Kusune, T.
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 71 Pages: id. S7
  • DOI: 10.1093/pasj/psz057
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Nobeyama 45 m mapping observations toward Orion A. I. Molecular Outflows (2019)
  • Author(s): Tanabe, Y., Nakamura, F., Tsukagoshi, T., Shimajiri, Y., Ishii, S., Kawabe, R., Feddersen, J. R., Kong, S., Arce, H. G., Bally, J., Carpenter, J. M., & Momose, M.
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 71 Pages: id. S8
  • DOI: 10.1093/pasj/psz100
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Nobeyama 45 m mapping observations toward Orion A. II. Classification of cloud structures and variation of the 13CO/C18O abundance ratio due to far-UV radiation (2019)
  • Author(s): Ishii, S., Nakamura, F., Shimajiri, Y., Kawabe, R., Tsukagoshi, T., Dobashi, K., & Shimoikura, T.
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 71 Pages: id. S9
  • DOI: 10.1093/pasj/psz065
  • Peer Reviewed
• [Journal Article] Nobeyama 45 m mapping observations toward Orion A. III. Multi-line observations toward an outflow-shocked region, Orion Molecular Cloud 2 FIR 4 (2019)
  • Author(s): Nakamura, F., Oyamada, S., Okumura, S., Ishii, S., Shimajiri, Y., Tanabe, Y., Tsukagoshi, T., Kawabe, R., Momose, M., Urasawa, Y., Nishi, R., Lin, S.-J., Lai, S.-P., Dobashi, K., Shimoikura, T., & Sugitani, K.
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 71 Pages: id. S10
  • DOI: 10.1093/pasj/psz001
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Vertical structure and kinematics of the Galactic outer disk (2019)
  • Author(s): Sakai, N., Nagayama, T., Nakanishi, H., Koide, N., Kurayama, T., Izumi, N., Hirota, T., Yoshida, T., Shibata, K. M., & Honma, M.
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 71 Pages: 掲載決定
  • DOI: 10.1093/pasj/psz125
  • Peer Reviewed
• [Presentation] Observations of exoplanets and their formation at high resolution -Recent progress and future prospects - (2020)
  • Author(s): Momose, M.
  • Organizer: ISAS Symposium 2020
  • Int'l Joint Research / Invited
• [Presentation] Star & Planet formation studies by next generation VLA (ngVLA) (2020)
  • Author(s): 百瀬宗武
  • Organizer: Workshop on Massive Star Formation
• [Presentation] Investigating the gas-to-dust ratio (G/D) in the protoplanetary disk of HD 142527 (2020)
  • Author(s): Momose, M., Soon, K.L., Hanawa, T., Muto, T.,Tsukagoshi, T., Kataoka, A., Fukagawa, M., Saigo, K., Shibai, H.
  • Organizer: East Asian ALMA Science Workshop 2019
  • Int'l Joint Research
• [Presentation] Potential Sciences with next generation VLA (ngVLA) (2020)
  • Author(s): 百瀬宗武
  • Organizer: Kickoff meeting of ngVLA Science Working Group
  • Invited
• [Presentation] 原始惑星系円盤内の物質循環混合について (2020)
  • Author(s): 本田充彦
  • Organizer: 第36回 Grain Formation Workshop
• [Presentation] 前主系列星における彩層活動由来のHe I λλ10830吸収線の初検出: 近赤外線高分散分光器WINEREDによるTaurus星生成領域中の中質量星の観測 (2020)
  • Author(s): 安井千香子, 濱野哲史, 近藤荘平, 鮫島寛明, 松永典之, 谷口大輔, 小林尚人, 福江慧, 竹中慶一, 池田優二, 河北秀世, 大坪翔悟, 渡瀬彩華、水本岬希, 泉奈都子, WINERED 開発チーム
  • Organizer: 日本天文学会2020年春季年会
• [Presentation] Possible progression of mass flow processes around young intermediate-mass stars based on high-resolution near-infrared spectroscopy. I. Taurus (2020)
  • Author(s): Yasui, C., WINERED Team
  • Organizer: American Astronomical Society meeting #235
  • Int'l Joint Research
• [Presentation] HD142527 に付随する原始惑星系円盤のガス・ダスト質量比分布 (2019)
  • Author(s): 百瀬宗武
  • Organizer: 日本惑星科学会2019年秋季講演会
• [Presentation] Investigating the gas-to-dust ratio (G/D) in the protoplanetary disk of HD 142527 (2019)
  • Author(s): Momose, M., Soon, K.L., Hanawa, T., Muto, T.,Tsukagoshi, T., Kataoka, A., Fukagawa, M., Saigo, K., Shibai, H.
  • Organizer: In the Spirit of Lyot 2019
  • Int'l Joint Research
• [Presentation] せいめい望遠鏡 I 観測開始 (2019)
  • Author(s): 長田哲也
  • Organizer: 日本天文学会2019年秋季年会
• [Presentation] 地上望遠鏡による天文観測 －赤外線の圧倒的利点 (2019)
  • Author(s): 長田哲也
  • Organizer: 日本赤外線学会第28回研究発表会
• [Presentation] Search for the Inner Disk Structures in "Transitional" Disks (2019)
  • Author(s): 武藤 恭之，橋本 淳，塚越 崇，小西 美穂子，工藤 智幸
  • Organizer: 日本地球惑星科学連合2019年大会
• [Presentation] 原始惑星系円盤構造の多様性と惑星形成 (2019)
  • Author(s): 武藤恭之
  • Organizer: 大阪大学宇宙地球科学セミナー
  • Invited
• [Presentation] Imaging Observations of the Planet-Forming Regions of Protoplanetary Disks with ngVLA (2019)
  • Author(s): Takayuki Muto
  • Organizer: ngVLA Workshop
  • Int'l Joint Research
• [Presentation] Multi-wavelength High Resolution Observations of Protoplanetary Disks (2019)
  • Author(s): Takayuki Muto
  • Organizer: Subaru Telescope 20th Anniversary - Optical & Infrared Astronomy for the Next Decade -
  • Int'l Joint Research
• [Presentation] Disk Structure Formation at the Earliest Stages of Disk Evolution (2019)
  • Author(s): Takayuki Muto
  • Organizer: ALMA Workshop 2019: Early Planet Formation in Embedded Disks
  • Int'l Joint Research / Invited
• [Presentation] Prospects of Disk Structure Observations for Young Protoplanetary Disks (2019)
  • Author(s): Takayuki Muto
  • Organizer: Workshop for Protoplanetary Disks and Exoplanets
  • Int'l Joint Research
• [Presentation] Lesson Learned from COMICS (2019)
  • Author(s): Mitsuhiko Honda
  • Organizer: Mid Infrared Astronomy Past 20 years and Future 20 years
  • Int'l Joint Research
• [Presentation] すばる＋TMTで切り拓く星・惑星系星 (2019)
  • Author(s): 本田充彦，大朝由美子
  • Organizer: 日本天文学会2019年秋季年会
• [Presentation] TMT用熱赤外観測装置 MICHI (2019)
  • Author(s): Mitsuhiko Honda, Chris Packham, Itsuki Sakon , Mark Chun, Takashi Miyata, Shigeyuki Sako, Takafumi Kamizuka, Ryou Ohsawa, Hirokazu Kataza , Takuya Yamashita, Yutaka Hayano, Yoshiko K. Okamoto
  • Organizer: 2019年度光赤天連シンポジウム
  • Invited
• [Presentation] Water ice mapping toward protoplanetary disk (2019)
  • Author(s): Mitsuhiko Honda
  • Organizer: In the Spirit of Lyot 2019
  • Int'l Joint Research
• [Presentation] Introduction of Japanese activities on SPICA planet formation sciences (2019)
  • Author(s): 本田充彦, 相川祐理, 荒川創太, 石原大助, 田崎亮, 橘省吾, 茅原弘毅, 中川貴雄, 野津翔太, 野村英子, 藤井悠里, 藤原英明, 松本侑士, 武藤恭之, 百瀬宗武, 森昇志
  • Organizer: SPICAサイエンス中間報告会
• [Presentation] Evolution of solids & planet formation revealed by Subaru (2019)
  • Author(s): Mitsuhiko Honda, H. Kataza, T. Miyata, S. Sako, T. Onaka, I. Sakon, T. Yamashita, H. Terada, T. Hattori, T. Kudo, J. Hashimoto, M. Tamura, T. Nakamoto, M. Watanabe, A.K. Inoue, Y.K.Okamoto
  • Organizer: SUBARU TELESCOPE 20TH ANNIVERSARY
  • Int'l Joint Research / Invited
• [Presentation] TMT用熱赤外観測装置MICHIおよび地上中間赤外での系外惑星・地球型惑星検出可能性について (2019)
  • Author(s): 本田充彦
  • Organizer: 地球型惑星の直接撮像装置ワークショップ 2019
• [Presentation] SPICA Observations of Complex Organic Molecules in Protoplanetary Disks (2019)
  • Author(s): Nomura, H.
  • Organizer: SPICA 2019
  • Int'l Joint Research
• [Presentation] Possibility to locate the position of the H2O snowline in protoplanetary disks through spectroscopic observations (2019)
  • Author(s): Notsu, S., Akiyama, E., Booth, A., Nomura, H., Walsh, C., Hirota, T., Honda, M., Tsukagoshi, T., & Millar, T. J.
  • Organizer: SPICA 2019
  • Int'l Joint Research
• [Presentation] Modelling Infrared Line Spectra of Complex Organic Molecules in Protoplanetary Disks (2019)
  • Author(s): Nomura, H.
  • Organizer: Extreme Solar Systems IV 2019
  • Int'l Joint Research
• [Presentation] MIR Observations of Water and Organic Molecules in Protoplanetary Disks (2019)
  • Author(s): Nomura, H.
  • Organizer: MIR Astronomy - Past 20 years and Future 20 years
  • Int'l Joint Research / Invited
• [Presentation] SPICAによる原始惑星系円盤からの複雑な有機分子輝線の観測予測 (2019)
  • Author(s): 野村英子
  • Organizer: 日本天文学会秋季年会
• [Presentation] Modelling Infrared Line Spectra of Complex Organic Molecules in Protoplanetary Disks (2019)
  • Author(s): Nomura, H.
  • Organizer: From Protoplanetary Disks through Planetary System Architecture to Planetary Atmospheres and Habitability
  • Int'l Joint Research
• [Presentation] Modelling Infrared Line Spectra of Complex Organic Molecules in Protoplanetary Disks (2019)
  • Author(s): Nomura, H.
  • Organizer: Planet Formation Workshop 2019
  • Int'l Joint Research
• [Presentation] The detection of a dust ring beyond the outer edge of the dust disk around CR Cha (2019)
  • Author(s): Kim, S., Takahashi, S., Nomura, H., Tsukagoshi, T., Lee, S., Muto, T., Dong, R., Hasegawa, Y., Hashimoto, J., Kanagawa, K., Kataoka, A., Konishi, M., Liu, H. B., Momose, M., Sitko, M., & Tomida, K.
  • Organizer: In the Spirit of Lyot 2019
  • Int'l Joint Research
• [Presentation] The detection of dust gap-ring structure in the CR Cha protoplanetary disk (2019)
  • Author(s): Kim, S., Takahashi, S., Nomura, H., Tsukagoshi, T., Lee, S., Muto, T., Dong, R., Hasegawa, Y., Hashimoto, J., Kanagawa, K., Kataoka, A., Konishi, M., Liu, H. B., Momose, M., Sitko, M., & Tomida, K.
  • Organizer: Planet Formation Workshop 2019
  • Int'l Joint Research
• [Presentation] The resolved dust gap-ring structure of the CR Cha disk and their possible origins (2019)
  • Author(s): Kim, S., Takahashi, S., Nomura, H., Tsukagoshi, T., Lee, S., Muto, T., Dong, R., Hasegawa, Y., Hashimoto, J., Kanagawa, K., Kataoka, A., Konishi, M., Liu, H. B., Momose, M., Sitko, M., & Tomida, K.
  • Organizer: East Asian ALMA Science Workshop 2019
  • Int'l Joint Research
• [Remarks] 若い惑星系に大量の原子ガスを発見：惑星形成の仕組みに再考を迫る
  • URL: https://alma-telescope.jp/news/press/49ceti-201912
• [Remarks] アルマ望遠鏡、惑星誕生の現場をピンポイントで特定
  • URL: https://alma-telescope.jp/news/press/twhya-201906
• [Remarks] 星形成過程における質量流出プロセスと原始惑星系円盤進化との関係性を発見
  • URL: https://www.kyoto-su.ac.jp/news/20191128_859_winered.html
• [Remarks] 若い星の周りで見つかった”稀な”分子 -惑星形成過程に新たなヒント-
  • URL: https://alma-telescope.jp/news/disk-201910