Detailed observational study on temporal variation of protoplanetary disks

• Project/Area Number: 23740151
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Astronomy
• Research Institution: Osaka University
• Principal Investigator: FUKAGAWA Misato 大阪大学, 理学(系)研究科(研究院), 助教 (40509840)
• Project Period (FY): 2011-04-28 – 2015-03-31
• Project Status: Completed (Fiscal Year 2014)
• Budget Amount: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000); Fiscal Year 2014: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000); Fiscal Year 2013: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000); Fiscal Year 2012: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000); Fiscal Year 2011: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
• Keywords: 惑星形成 / 原始惑星系円盤 / 変光 / 赤外線観測 / 光赤外線天文学 / 時間変動 / 星形成 / 国際研究者交流 / 光学赤外線天文学 / 惑星起源・進化 / アメリカ

Outline of Final Research Achievements

Observations of birthplaces of planets, 'protoplanetary disks' around young stars, are central to understand how planets form. Temporal variation of the disk structure is one of the key properties to know what is happening there. In this study, quasi-simultaneous observations of protoplanetary disks were conducted in direct imaging, spectroscopy, and photometry at optical and near-infrared wavelengths. In direct imaging combined with photometry, the anti-correlation was found between thermal emission from the innermost region of the disk and the light scattered by the solid grains in the outer disk. This suggests variable illumination, and hence temporal change of the inner disk structure as well as grain sedimentation toward the disk mid-plane. The more frequent monitoring has been performed for the optical and near-infrared photometry over 3 years using the 1.3m telescope, yielding the discovery of a large extinction event for AA Tauri.

Research Products

• [Journal Article] A study on the mid-infrared sources that dramatically brightened (2015)
  • Author(s): Onozato, H., Ita, Y., Ono, K., Fukagawa, M., Yanagisawa, K., Izumiura, H., Nakada, Y., Matsunaga, N.
  • Journal Title: Publications of the Astronomical Society of Japan Volume: - Issue: 3 Pages: 3926-3926
  • DOI: 10.1093/pasj/psv008
  • Peer Reviewed
• [Journal Article] Near-infrared image of the debris disk around HD 15115 (2015)
  • Author(s): Sai, S., Itoh, Y., Fukagawa, M., Shibai, H., Sumi, T.
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 67 Issue: 2 Pages: 20-20
  • DOI: 10.1093/pasj/psu152
  • NAID: 40020435020
  • Peer Reviewed / Open Access
• [Journal Article] The outer disks of Herbig stars from the UV to NIR (2015)
  • Author(s): Grady, C. ほか59名
  • Journal Title: Astrophysics and Space Science Volume: 355 Issue: 2 Pages: 253-266
  • DOI: 10.1007/s10509-014-2214-2
  • Peer Reviewed
• [Journal Article] SEEDS Adaptive Optics Imaging of the Asymmetric Transition Disk Oph IRS 48 in Scattered Light (2015)
  • Author(s): Follette, Katherine B. ほか62名
  • Journal Title: The Astrophysical Journal Volume: 798 Issue: 2 Pages: 132-132
  • DOI: 10.1088/0004-637x/798/2/132
  • Peer Reviewed / Open Access
• [Journal Article] Variability of Disk Emission in Pre-main Sequence and Related Stars. III. Exploring Structural Changes in the Pre-transitional Disk in HD 169142 (2015)
  • Author(s): Wagner, K. R., Momose, M.（11番目), Muto, T.(12番目), Fukagawa, M. (17番目), et al. (全20著者)
  • Journal Title: The Astrophysical Journal Volume: 798 Issue: 2 Pages: 94-94
  • DOI: 10.1088/0004-637x/798/2/94
  • Peer Reviewed / Open Access
• [Journal Article] Recovery of the Candidate Protoplanet HD 100546 b with Gemini/NICI and Detection of Additional (Planet-induced?) Disk Structure at Small Separations (2014)
  • Author(s): Currie, Thayne; Muto, Takayuki; Kudo, Tomoyuki; Honda, Mitsuhiko; Brandt, Timothy D.; Grady, Carol; Fukagawa, Misato; Burrows, Adam; Janson, Markus; Kuzuhara, Masayuki; McElwain, Michael W.; Follette, Katherine; Hashimoto, Jun; Henning, Thomas; Kandori, Ryo; Kusakabe, Nobuhiko; Kwon, Jungmi;...; Tamura, Motohide
  • Journal Title: The Astrophysical Journal Letters Volume: 796 Issue: 2 Pages: L30-L30
  • DOI: 10.1088/2041-8205/796/2/l30
  • Peer Reviewed / Open Access
• [Journal Article] Characterization of the gaseous companion κ Andromedae b : New Keck and LBTI high-contrast observations (2014)
  • Author(s): Bonnefoy, M. ; Currie, T. ; Marleau, G. -D., et al. (No. 35 of 70 authors)
  • Journal Title: Astronomy and Astrophysics Volume: 562 Pages: 1-20
  • DOI: 10.1051/0004-6361/201322119
  • Peer Reviewed
• [Journal Article] Local Enhancement of the Surface Density in the Protoplanetary Ring Surrounding HD 142527 (2013)
  • Author(s): Fukagawa, Misato ; Tsukagoshi, Takashi ; Momose, Munetake ; Saigo, Kazuya ; Ohashi, Nagayoshi ; Kitamura, Yoshimi ; Inutsuka, Shu-ichiro ; Muto, Takayuki ; Nomura, Hideko ; Takeuchi, Taku ; Kobayashi, Hiroshi ; Hanawa, Tomoyuki ; Akiyama, Eiji ; Honda, Mitsuhiko ; Fujiwara, Hideaki ; Kataoka, Akimasa ; Takahashi, Sanemichi Z. ; Shibai, Hiroshi
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 65 Issue: 6 Pages: 14-14
  • DOI: 10.1093/pasj/65.6.l14
  • Peer Reviewed
• [Journal Article] A Combined Very Large Telescope and Gemini Study of the Atmosphere of the Directly Imaged Planet, β Pictoris b (2013)
  • Author(s): Currie T., Burrows A., Madhusudhan N., Fukagawa M., Girard J. H., Dawson R., Murray-Clay R., Kenyon S., Kuchner M., Matsumura S., Jayawardhana R., Chambers J., Bromley B.
  • Journal Title: The Astrophysical Journal Volume: 776 Issue: 1 Pages: 15-15
  • DOI: 10.1088/0004-637x/776/1/15
  • Peer Reviewed
• [Journal Article] Direct Imaging Search for Extrasolar Planets in the Pleiades (2013)
  • Author(s): Yamamoto, K., Matsuo, T., Shibai, H., et al. (No. 34 of 56 authors)
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 65 Issue: 4 Pages: 90-90
  • DOI: 10.1093/pasj/65.4.90
  • Peer Reviewed
• [Journal Article] The SEEDS Direct Imaging Survey for Planets and Scattered Dust Emission in Debris Disk Systems (2013)
  • Author(s): Janson, M., Brandt, T. D., Moro-Martin, A., et al. (No. 32 of 52 authors)
  • Journal Title: The Astrophysical Journal Volume: 773 Issue: 1 Pages: 1-11
  • DOI: 10.1088/0004-637x/773/1/73
  • Peer Reviewed
• [Journal Article] Spiral Arms in the Asymmetrically Illuminated Disk of MWC 758 and Constraints on Giant Planets (2012)
  • Author(s): Grady, C. A., Muto, T., Hashimoto, J., Fukagawa, M., Currie, T., Biller, B., Thalmann, C., Sitko, M. L., Russell, R., Wisniewski, J., Dong, R., J. Kwon. J., 63 coauthors
  • Journal Title: The Astrophysical Journal Volume: 762 Issue: 1 Pages: 48-60
  • DOI: 10.1088/0004-637x/762/1/48
  • Peer Reviewed
• [Journal Article] High-Resolution Near-Infrared Polarimetry of a Circumstellar Disk around UX Tau A (2012)
  • Author(s): Tanii, R.; Itoh, Y.; Kudo, T.; Hioki, T.i; Oasa, Y.; Gupta, R.; Sen, A. K.; Wisniewski, J. P.; Muto, T.; Grady, C. A.; Hashimoto, J.; Fukagawa, M.; and 56 coauthors
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 64 Pages: 124-133
  • NAID: 10031146598
  • Peer Reviewed
• [Journal Article] Subaru Imaging of Asymmetric Features in a Transitional Disk in Upper Scorpius (2012)
  • Author(s): Satoshi Mayama, et al.
  • Journal Title: The Astrophysical Journal Letters Volume: 760 Issue: 2 Pages: 26-30
  • DOI: 10.1088/2041-8205/760/2/l26
  • Peer Reviewed
• [Journal Article] Polarimetric Imaging of Large Cavity Structures in the Pre-transitional Protoplanetary Disk around PDS 70 : Observations of the disk (2012)
  • Author(s): Hashimoto, J., Dong, R., Kudo, T., Honda, M., McClure, M., Zhu, Z., Muto, T., Wisniewski, J., Abe, L., Brandner, W., Brandt, T., Carson, J., Egner, S., Feldt, M., Fukagawa, M., Goto, M., Grady, C. A., Guyon, O., Hayano, Y., Hayashi, M., Hayashi, S., Henning, T., Hodapp, K., Ishii, M., Iye, M., Janson, M., Kandori, R., Knapp, G., Kusakabe, N., Kuzuhara, M., Kwon. J., 24 coauthors
  • Journal Title: The Astrophysical Journa Volume: 758 Issue: 1 Pages: L19-L19
  • DOI: 10.1088/2041-8205/758/1/l19
  • Peer Reviewed
• [Journal Article] High-contrast Near- infrared Polarization Imaging of MWC480 (2012)
  • Author(s): Kusakabe, N. , Hayashi, M. , Terada, H. 他53名
  • Journal Title: The Astrophysical Journal Volume: Volume 753, Issue 2 Issue: 2 Pages: 153-159
  • DOI: 10.1088/0004-637x/753/2/153
  • Peer Reviewed
• [Journal Article] Discovery of Small-Scale Spiral Structures in the Disk of SAO 206462 (HD 135344B) : Implications for the Physical States of theDisk from Spiral Density Wave Theory (2012)
  • Author(s): Muto, T., Grady, C.A., Hashimoto, J., et al.(Takeuchi, T.as the 16th author of 62 authors)
  • Journal Title: The Astrophysical Journal Letters Volume: 748 Issue: 2 Pages: L22-L22
  • DOI: 10.1088/2041-8205/748/2/l22
  • Peer Reviewed
• [Journal Article] Near- and Mid-Infrared Imaging Study of Young Stellar Objects around LkHa 234 (2011)
  • Author(s): Kato, E., Fukagawa, M., Perrin, M. D., Shibai, H., Itoh, Y., Ootsubo, T.
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 63 Pages: 849-860
  • Peer Reviewed
• [Journal Article] High-Resolution Optical and Near-Infrared Images of the FS Tauri Circumbinary Disk (2011)
  • Author(s): Hioki, T., Itoh, Y., Oasa, Y., Fukagawa, M., Hayashi, M.
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 63 Pages: 543-554
  • NAID: 10029037692
  • Peer Reviewed
• [Presentation] ALMA Observations of the Asymmetrically Gapped Disk around HD 142527 (2013)
  • Author(s): Fukagawa, M., Tsukagoshi, T., Momose, M., Saigo, K., Ohashi, N., Kitamura, Y., Muto, T., Nomura, H., Kobayashi, H., Takeuchi, T., Akiyama, E., Aso, Y., Honda, M., Fujiwara, H., Takahashi, S., Shibai, H., Inutsuka, S.
  • Organizer: Transformational Science with ALMA: From Dust to Rocks to Planets: Formation and Evolution of Planetary Systems
  • Place of Presentation: アメリカ・ハワイ州・コナ
• [Presentation] Current understanding of young circumstellar disks (2013)
  • Author(s): Fukagawa, M.
  • Organizer: From Exoplanets to Distant Galaxies: SPICA's New Window on the Cool Universe
  • Place of Presentation: 東京都文京区（東京大学）
  • Invited
• [Presentation] Near-Infrared Polarimetric Imaging of Disks around Young Intermediate-mass Stars in SEEDS (2013)
  • Author(s): Fukagawa M., Hashimoto J., Grady C. A., Momose M., Wisniewski J. P., Okamoto Y., Muto T., Kusakabe N., Bonnefoy M., Kotani T., Maruta Y., Tamura M., Seeds/Hiciao/Ao188 Collaboration
  • Organizer: Protostars and Planets VI
  • Place of Presentation: ドイツ・ハイデルベルク
• [Presentation] Star and Planet Formation; High Angular Resolution Study of Protoplanetary Disks (2013)
  • Author(s): Fukagawa, M.
  • Organizer: Thirty Meter Telescope Science Forum 2013
  • Place of Presentation: アメリカ・ハワイ州・コナ
  • Invited
• [Presentation] ALMA Observations of a Gapped Protoplanetary Disk (2013)
  • Author(s): Fukagawa, M., Tsukagoshi, T., Momose, M., Saigo, K., Ohashi, N. et al.
  • Organizer: East-Asian ALMA Science Workshop 2013
  • Place of Presentation: 中国・台湾・台北
• [Presentation] Astronomical Observations of Planetary Nurseries (2013)
  • Author(s): Fukagawa, M.
  • Organizer: The International Symposium on Research Frontiers of Physics, Earth and Space Science
  • Place of Presentation: 大阪府豊中市（大阪大学）
• [Presentation] HD 142527に付随する原始惑星系円盤のサブミリ波高解像度観測 (2013)
  • Author(s): 深川美里, 芝井 広, 塚越 崇，百瀬宗武，西合一矢，大橋永芳，秋山永治，藤原英，北村良実，犬塚修一郎，小林 浩，武藤恭之，野村英子，竹内 拓，本田充彦，花輪知幸，片岡章雅，麻生有佑
  • Organizer: 日本天文学会2013年秋季年会
  • Place of Presentation: 宮城県仙台市（東北大学）
• [Presentation] Simultaneous Visible and Near-Infrared Variability of Classical T Tauri Stars (2013)
  • Author(s): Aimi Y., Fukagawa M., Yasuda T., Yamashita T., Kawabata K., Uemura M., Arai A., Sasada M., Ohsugi T., Yoshida M., Shibai H.
  • Organizer: IAU Symposium 299:Exploring the Formation and Evolution of Planetary Systems
  • Place of Presentation: カナダ・ブリティッシュコロンビア州・ビクトリア
• [Presentation] Simultaneous Visible and Near-Infrared photometric monitoring of T Tauri Stars (2013)
  • Author(s): Aimi Y., Fukagawa M., Yasuda T., Yamashita T., Kawabata K., Uemura M., Arai A., Sasada M., Ohsugi T., Yoshida M., Shibai H.
  • Organizer: The International Symposium on Research Frontiers of Physics, Earth and Space Science
  • Place of Presentation: 大阪府豊中市（大阪大学）
• [Presentation] 可視・近赤外線同時観測によるTタウリ型星の変光原因の解明 (2011)
  • Author(s): 会見 有香子
  • Organizer: 日本天文学会2011年秋季年会
  • Place of Presentation: 鹿児島大学