2018 Fiscal Year Annual Research Report
Project/Area Number |
15H05694
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Research Institution | Nagoya University |
Principal Investigator |
福井 康雄 名古屋大学, 理学研究科, 特任教授
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Project Period (FY) |
2015 – 2019
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Keywords | 星間水素 / 星間ダスト / ガンマ線 / バリオン / NANTEN2 |
Outline of Annual Research Achievements |
1) NASCO計画の推進 受信機自体については計画通り完成し、実験室において性能評価の上、チリ現地に発送する段階を迎えた。この時点で、開発を担当していた分担者の突然の変更を余儀なくされるトラブルが生じたが、種々の対応策を講じ、最終年度に遺漏なく計画を遂行する体制を構築した。 2) 星間水素の物理状態の追究 これまでの成果を受けて、光学的に厚い水素原子スペクトルの解析を他の領域に拡張し、重要な成果があがった。まず、Hayashi et al. 2019は、我々の手法をカメレオン領域に適用してFukui et al. 2015と矛盾のない光学的に厚い星間水素の描像を確認した。次に、銀河系ハロー領域にある中間速度HI雲方向の水素原子を解析し、同HI雲における重元素量が太陽系近傍の値よりも5分の1以下と少ないことを導いた。これによって銀河系にマゼラン雲などの低重元素天体から流入するHI雲の存在が、高い確度で立証された。さらに、マゼラン雲のN44領域に同じ手法を適用し、20-30%程度の重元素量の減少が見られることを見出して、R136領域同様に重元素量の低いHI雲の流入を示した。以上の成果は本計画の申請書にも記載した期待される成果の一部であり、着実に研究が前進していると判断される。
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Current Status of Research Progress |
Current Status of Research Progress
2: Research has progressed on the whole more than it was originally planned.
Reason
分担者の変更により思いがけない打撃を受けたが、種々の対策を講じてマイナスを最小限に抑えることを目指している。十分に見通しがあると判断している。 また、機器の一部に輸送のためと見られる破損が生じたので、修理のため日本へ返送した。そのため若干の日数を要し、また輸送費用が発生した。
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Strategy for Future Research Activity |
計画通り新受信機をNANTEN2に搭載し、観測を実施する。 観測計画の最適化 計画の当初段階に比べて、水素原子と原子分子相転移に関する理解は著しく深化した。疑似観測結果をもとに、分子雲形成初期の観測的特徴を整理し、最終的な観測計画に反映させる。特に、形成初期の分子雲は、原子の存在量が卓越している可能性があり、また、サイズが小さいと予想される。これに対応するCO分子の観測的な特徴を踏まえて、必要な感度の検討を精密化する。 プランクとの比較研究の拡張 プランク衛星及びHIの観測結果が更新されたのに伴い、初期のプランクとの比較解析を再検討する必要がある。また、カメレオン座に加えてあらたに全天に解析を拡張して結果の一般性を確立する計画である。フェルミ衛星の活用も含めて、これらの課題を遂行する。 XCO因子の分布の導出等 本研究の成果の一つとして、COの電波強度を水素全量に変換する係数の導出がある。これを全天の数10%の領域に拡張し、分子雲定量の精密化をはかる。これと同時に、星間微粒子のサイズの進化に関する知見も得られると期待される。さらに、銀河系とマゼラン雲のシステムの重元素量の分布と起源についても画期的な知見が得られることが期待される。
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Research Products
(120 results)
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[Journal Article] Formation of high-mass stars in an isolated environment in the Large Magellanic Cloud2019
Author(s)
Harada, R., Onishi, T., Tokuda, K., Zahorecz, S., Hughes, A., Meixner, M., Sewiło, M., Indebetouw, R., Nayak, O., Fukui, Y., Tachihara, K., 他
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Journal Title
Publications of the Astronomical Society of Japan
Volume: 71
Pages: id.44
DOI
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] Connecting the ISM to TeV PWNe and PWN candidates2019
Author(s)
Voisin, F. J., Rowell, G. P., Burton, M. G., Fukui, Y., Sano, H., Aharonian, F., Maxted, N., Braiding, C., Blackwell, R., & Lau, J.
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Journal Title
Publications of the Astronomical Society of Australia
Volume: 36
Pages: 14
DOI
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] Probing the origin of the unidentified TeV gamma-ray source HESS J1702-420 via the surrounding interstellar medium2019
Author(s)
Lau, J. C., Rowell, G., Voisin, F., Blackwell, R., Burton, M. G., Braiding, C., Wong, G. F., Fukui, Y., & Casanova, S.
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Journal Title
Monthly Notices of the Royal Astronomical Society
Volume: 483
Pages: 3659-3672
DOI
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] ALMA CO Observations of Supernova Remnant N63A in the Large Magellanic Cloud : Discovery of Dense Molecular Clouds Embedded within Shock-ionized and Photoionized Nebulae2019
Author(s)
Sano, H., Matsumura, H., Nagaya, T., Yamane, Y., Alsaberi, R. Z. E., Filipovic, M. D., Tachihara, K., Yamamoto, H., Rowell, G., Sasaki, M., Fukui, Y., 他
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Journal Title
The Astrophysical Journal
Volume: 873
Pages: 40
DOI
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] Submillimeter Polarization Spectrum of the Carina Nebula2019
Author(s)
Shariff, J. A., Ade, P. A. R., Angilè, F. E., Ashton, P., Benton, S. J., Devlin, M. J., Dober, B., Fissel, L. M., Fukui, Y., Galitzki, N., Gandilo, N. N., 他
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Journal Title
The Astrophysical Journal
Volume: 872
Pages: 197
DOI
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] FUGIN : Molecular Gas in Spitzer Bubble N4---Possible Evidence for a Cloud-Cloud Collision as a Trigger of Massive Star Formations2019
Author(s)
Fujita, S., Torii, K., Tachihara, K., Enokiya, R., Hayashi, K., Kuno, N., Kohno, M., Yamagishi, M., Nishimura, A., Sano, H., Fukui, Y., & FUGIN members, 他
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Journal Title
The Astrophysical Journal
Volume: 872
Pages: 49
DOI
Peer Reviewed / Open Access
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[Journal Article] Formation of the Active Star-forming Region LHA 120-N 44 Triggered by Tidally Driven Colliding H I Flows2019
Author(s)
Tsuge, K., Sano, H., Tachihara, K., Yozin, C., Bekki, K., Inoue, T., Nizuno, N., Kawamura, A., Onishi, T., & Fukui, Y.
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Journal Title
The Astrophysical Journal
Volume: 871
Pages: 44
DOI
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] An intermediate-velocity H I cloud falling to the galactic disk : Possible evidence for low-metallicity H I gas originating outside the galactic disk2019
Author(s)
Fukui, Y., Koga, M., Maruyama, S., Hayakawa, T., Okamoto, R., Yamamoto, H., Tachihara, K., Shelton, R., & Sasaki, M.
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Journal Title
Publications of the Astronomical Society of Japan
DOI
Peer Reviewed / Open Access
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[Journal Article] CO observations toward the isolated mid-infrared bubble S44 : External triggering of O-star formation by a cloud-cloud collision2019
Author(s)
Kohno, M., Tachihara, K., Fujita, S., Hattori, Y., Torii, K., Nishimura, A., Hanaoka, M., Yoshiike, S., Enokiya, R., Hasegawa, K., Ohama, A., Sano, H., Yamamoto, H., & Fukui, Y.
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Journal Title
Publications of the Astronomical Society of Japan
DOI
Peer Reviewed / Open Access
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[Journal Article] The Dust-selected Molecular Clouds in the Northeast Region of the Small Magellanic Cloud2018
Author(s)
Takekoshi, T., Minamidani, T., Komugi, S., Kohno, K., Tosaki, T., Sorai, K., Muller, E., Mizuno, N., Kawamura, A., Onishi, T., Fukui, Y., Bot, C., Rubio, M., 他
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Journal Title
The Astrophysical Journal
Volume: 867
Pages: 117
DOI
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] Molecular Clouds Associated with the Type Ia SNR N103B in the Large Magellanic Cloud2018
Author(s)
Sano, H., Yamane, Y., Tokuda, K., Fujii, K., Tsuge, K., Nagaya, T., Yoshiike, S., Filipovic, M. D., Alsaberi, R. Z. E., Yamamoto, H., Tachihara, K., Fukui, Y., 他
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Journal Title
The Astrophysical Journal
Volume: 867
Pages: 7
DOI
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] CO observations of the molecular gas in the Galactic H II region Sh2-48 : Evidence for cloud-cloud collision as a trigger of high-mass star formation2018
Author(s)
Torii, K., Hattori, Y., Matsuo, M., Fujita, S., Nishimura, A., Minamidani, T., Kuno, N., Yoshiike, S., Ohama, A., Tachihara, K., Fukui, Y., Haworth, T. J., 他
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Journal Title
Publications of the Astronomical Society of Japan
DOI
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] Searching for an interstellar medium association for HESS J1534-5712018
Author(s)
Maxted, N. I., Braiding, C., Wong, G. F., Rowell, G. P., Burton, M. G., Fiiipovic, M. D., Voisin, F., Urosevic, D., Vukotic, B., Pavlovic, M. Z., Sano, H., & Fukui, Y.
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Journal Title
Monthly Notices of the Royal Astronomical Society
Volume: 480
Pages: 134-148
DOI
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] A Morphological Study of the Supernova Remnant Rx J0852.0-4622 (Vela Jr.)2018
Author(s)
Maxted, N. I., Filipovic, N. D., Sano, H., Allen, G. E., Pannuti, T. G., Rowell, G. P., Grech, A., Roper, Q., Wong, G. F., Galvin, T. J., Fukui, Y., 他
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Journal Title
The Astrophysical Journal
Volume: 866
Pages: 76
DOI
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] An X-ray expansion and proper motion study of the Magellanic Cloud Supernova Remnant J0509-6731 with the Chandra X-ray observatory2018
Author(s)
Roper, Q., Filipovic, M., Allen, G. E., Sano, H., Park, L., Pannuti, T. G., Sasaki, M., Haberl, F., Kavanagh, P. J., Yamane, Y., Yoshiike, S., Fujii, K., Fukui, Y., & Seitenzahl, I. R.
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Journal Title
Monthly Notices of the Royal Astronomical Society
Volume: 479
Pages: 1800-1806
DOI
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] Magnetic activity in the Galactic Centre region-fast downflows along rising magnetic loops2018
Author(s)
Kuriki, M., Sano, H., Kuno, N., Seta, M., Yamane, Y., Inaba, T., Nagaya, T., Yoshiike, S., Matsuo, M., Torii, K., Rowell, G., Tachihara, K., & Fukui, Y., 他
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Journal Title
The Astrophysical Journal
Volume: 864
Pages: 161
DOI
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] A Spatially Resolved Study of X-Ray Properties in Superbubble 30 Dor C with XMM-Newton2018
Author(s)
Babazaki, Y., Mitsuishi, I., Matsumoto, H., Sano, H., Yamane, Y., Yoshiike, S., & Fukui, Y.
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Journal Title
The Astrophysical Journal
Volume: 864
Pages: 12
DOI
Peer Reviewed / Open Access
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[Journal Article] ALMA Observations of Supernova Remnant N49 in the LMC. I. Discovery of CO Clumps Associated with X-Ray and Radio Continuum Shells2018
Author(s)
Yamane, Y., Sano, H., van Loon, J. T., Filipovic, M. D., Fujii, K., Tokuda, K., Tsuge, K., Nagaya, T., Yoshiike, S., Grieve, K., Tachihara, K., Fukui, Y., 他
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Journal Title
The Astrophysical Journal
Volume: 863
Pages: 55
DOI
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] Warm CO Gas Generated by Possible Turbulent Shocks in a Low-mass Star-forming Dense Core in Taurus2018
Author(s)
Tokuda, K., Onishi, T., Saigo, K., Matsumoto, T., Inoue, T., Inutsuka, S. -i., Fukui, Y., Machida, M. N., Tomida, K., Hosokawa, T., Kawamura, A., & Tachihara, K.
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Journal Title
The Astrophysical Journal
Volume: 862
Pages: 8
DOI
Peer Reviewed / Open Access
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[Journal Article] Magnetic activity in the Galactic Centre region-fast downflows along rising magnetic loops2018
Author(s)
Kakiuchi, K., Suzuki, T. K., Fukui, Y., Torii, K., Enokiya, R., Machida, M., & Matsumoto, R.
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Journal Title
Monthly Notices of the Royal Astronomical Society
Volume: 476
Pages: 5629-5638
DOI
Peer Reviewed / Open Access
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[Journal Article] Synthetic Observations of 21 cm H I Line Profiles from Inhomogeneous Turbulent Interstellar H I Gas with Magnetic Fields2018
Author(s)
Fukui, Y., Hayakawa, T., Inoue, T., Torii, K., Okamoto, R., Tachihara, K., Onishi, T., & Hayashi, K.
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Journal Title
The Astrophysical Journal
Volume: 860
Pages: 33
DOI
Peer Reviewed / Open Access
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[Journal Article] A New Look at the Molecular Gas in M42 and M43 : Possible Evidence for Cloud-Cloud Collision that Triggered Formation of the OB Stars in the Orion Nebula Cluster2018
Author(s)
Fukui, Y., Torii, K., Hattori, Y., Nishimura, A., Ohama, A., Shimajiri, Y., Shima, K., Habe, A., Sano, H., Kohno, M., Yamamoto, H., Tachihara, K., & Onishi, T.
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Journal Title
The Astrophysical Journal
Volume: 859
Pages: 166
DOI
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] The formation of massive molecular filaments and massive stars triggered by a magnetohydrodynamic shock wave2018
Author(s)
Inoue, T., Hennebelle, P., Fukui, Y., Matsumoto, T., Iwasaki, K., & Inutsuka, S. -i.
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Journal Title
Publications of the Astronomical Society of Japan
Volume: 70
Pages: S53
DOI
Peer Reviewed / Open Access
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[Journal Article] Triggering the formation of the supergiant H II region NGC 604 in M 332018
Author(s)
Tachihara, K., Gratier, P., Sano, H., Tsuge, K., Miura, R. E., Muraoka, K., & Fukui, Y.
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Journal Title
Publications of the Astronomical Society of Japan
Volume: 70
Pages: S52
DOI
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] Large-scale CO J = 1-0 observations of the giant molecular cloud associated with the infrared ring N35 with the Nobeyama 45 m telescope2018
Author(s)
Torii, K., Fujita, S., Matsuo, M., Nishimura, A., Kohno, M., Kuriki, M., Tsuda, Y., Minamidani, T., Ohama, A., Tachihara, K., Shima, K., Habe, A., Fukui, Y., 他
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Journal Title
Publications of the Astronomical Society of Japan
Volume: 70
Pages: S51
DOI
Peer Reviewed / Open Access
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[Journal Article] FOREST Unbiased Galactic plane Imaging survey with the Nobeyama 45 mtelescope (FUGIN) : Molecular clouds toward W 33 ; possible evidence for a cloud-cloud collision triggering O star formation2018
Author(s)
Kohno, M., Torii, K., Tachihara, K., Umemoto, T., Minamidani, T., Nishimura, A., Fujita, S., Matsuo, M., Yamagishi, M., Sano, H., Yamamoto, H., & Fukui, Y., 他
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Journal Title
Publications of the Astronomical Society of Japan
Volume: 70
Pages: S50
DOI
Peer Reviewed / Open Access
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[Journal Article] Detailed CO(J = 1-0, 2-1, and 3-2) observations toward an H II region RCW 32 in the Vela Molecular Ridge2018
Author(s)
Enokiya, R., Sano, H., Hayashi, K., Tachihara, K., Torii, K., Yamamoto, H., Hattori, Y., Hasegawa, Y., Ohama, A., Kimura, K., Ogawa, H., & Fukui, Y.
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Journal Title
Publications of the Astronomical Society of Japan
Volume: 70
Pages: S49
DOI
Peer Reviewed / Open Access
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[Journal Article] High-mass star formation possibly triggered by cloud-cloud collision in the H II region RCW 342018
Author(s)
Hayashi, K., Sano, H., Enokiya, R., Torii, K., Hattori, Y., Kohno, M., Fujita, S., Nishimura, A., Ohama, A., Yamamoto, H., Tachihara, K., Hasegawa, Y., Kimura, K., Ogawa, H., & Fukui, Y.
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Journal Title
Publications of the Astronomical Society of Japan
Volume: 70
Pages: S48
DOI
Peer Reviewed / Open Access
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[Journal Article] Molecular gas in the H II-region complex RCW 166 : Possible evidence for an early phase of cloud-cloud collision prior to the bubble formation2018
Author(s)
Ohama, A., Kohno, M., Fujita, S., Tsutsumi, D., Hattori, Y., Torii, K., Nishimura, A., Sano, H., Yamamoto, H., Tachihara, K., & Fukui, Y.
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Journal Title
Publications of the Astronomical Society of Japan
Volume: 70
Pages: S47
DOI
Peer Reviewed / Open Access
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[Journal Article] Molecular clouds toward three Spitzer bubbles S116, S117, and S118 : Evidence for a cloud-cloud collision which formed the three H II regions and a 10 pc scale molecular cavity2018
Author(s)
Fukui, Y., Ohama, A., Kohno, M., Torii, K., Fujita, S., Hattori, Y., Nishimura, A., Yamamoto, H., & Tachihara, K.
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Journal Title
Publications of the Astronomical Society of Japan
Volume: 70
Pages: S46
DOI
Peer Reviewed / Open Access
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[Journal Article] The formation of a Spitzer bubble RCW 79 triggered by a cloud-cloud collision2018
Author(s)
Ohama, A., Kohno, M., Hasegawa, K., Torii, K., Nishimura, A., Hattori, Y., Hayakawa, T., Inoue, T., Sano, H., Yamamoto, H., Tachihara, K., & Fukui, Y.
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Journal Title
Publications of the Astronomical Society of Japan
Volume: 70
Pages: S45
DOI
Peer Reviewed / Open Access
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[Journal Article] Formation of the young compact cluster GM 24 triggered by a cloud-cloud collision2018
Author(s)
Fukui, Y., Kohno, M., Yokoyama, K., Nishimura, A., Torii, K., Hattori, Y., Sano, H., Ohama, A., Yamamoto, H., & Tachihara, K.
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Journal Title
Publications of the Astronomical Society of Japan
Volume: 70
Pages: S44
DOI
Peer Reviewed / Open Access
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[Journal Article] RCW 36 in the Vela Molecular Ridge : Evidence for high-mass star-cluster formation triggered by cloud-cloud collision2018
Author(s)
Sano, H., Enokiya, R., Hayashi, K., Yamagishi, M., Saeki, S., Okawa, K., Tsuge, K., Ohama, A., Tachihara, K., Torii, K., Rowell, G., Burton, M. G., Fukui, Y., 他
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Journal Title
Publications of the Astronomical Society of Japan
Volume: 70
Pages: S43
DOI
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] FOREST Unbiased Galactic plane Imaging survey with the Nobeyama 45 mtelescope (FUGIN). Ⅲ. Possible evidence for formation of NGC 6618 cluster in M 17 by cloud-cloud collision2018
Author(s)
Nishimura, A., Minamidani, T., Umemoto, T., Fujita, S., Matsuo, M., Hattori, Y., Kohno, M., Yamagishi, M., Sano, H., Tachihara, K., Ohama, A., Fukui, Y., 他
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Journal Title
Publications of the Astronomical Society of Japan
Volume: 70
Pages: S42
DOI
Peer Reviewed / Open Access
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[Journal Article] Molecular clouds in the NGC 6334 and NGC 6357 region : Evidence for a 100 pc-scale cloud-cloud collision triggering the Galactic mini-starbursts2018
Author(s)
Fukui, Y., Kohno, M., Yokoyama, K., Torii, K., Hattori, Y., Sano, H., Nishimura, A., Ohama, A., Yamamoto, H., & Tachihara, K.
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Journal Title
Publications of the Astronomical Society of Japan
Volume: 70
Pages: S41
DOI
Peer Reviewed / Open Access
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[Journal Article] First Observation of the Submillimeter Polarization Spectrum in a Translucent Molecular Cloud2018
Author(s)
Ashton, P. C., Ade, P. A. R., Angilè, F. E., Benton, S. J., Devlin, M. J., Dober, B., Fissel, L. M., Fukui, Y., Galitzki, N., Gandilo, N. N., Klein, J., 他
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Journal Title
The Astrophysical Journal
Volume: 857
Pages: 10
DOI
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] HESS J1741-302 : a hidden accelerator in the Galactic plane2018
Author(s)
H. E. S. S. Collaboration, Abdalla, H., Abramowski, A., Nanten Collaboration, Enokiya, R., Fukui, Y., Hayakawa, T., Okuda, T., Torii, K., & Yamamoto, H., 他
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Journal Title
Astronomy and Astrophysics
Volume: 612
Pages: 13
DOI
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] A search for new supernova remnant shells in the Galactic plane with H. E. S. S.2018
Author(s)
H. E. S. S. Collaboration, Abdalla, H., Abramowski, A., Aharonian, F., Ait Benkhali, F., Akhperjanian, A. G., Andersson, T., Fukui, Y., Sano, H., Yoshiike, S., 他
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Journal Title
Astronomy and Astrophysics
Volume: 612
Pages: 8
DOI
Peer Reviewed / Open Access / Int'l Joint Research
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