Infrared Monitor Observations of T-Tauri Stars

• Project/Area Number: 12640230
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Astronomy
• Research Institution: the University of Tokyo
• Principal Investigator: UENO Munetaka the University of Tokyo, Graduate School of Arts and Sciences, Assistant Professor, 大学院・総合文化研究科, 助手 (30242019)
• Co-Investigator(Kenkyū-buntansha): DOI Yasuo the University of Tokyo, Graduate School of Arts and Sciences, Assistant Professor, 大学院・総合文化研究科, 助手 (70292844) ; TAMURA Motohide National Astronomical Observatory, Optical and Infrared Astronomy Division, Associate Professor, 光学赤外線天文学観測システム研究系, 助教授 (00260018) ; MURAKAMI Hiroshi Institute of Space and Astronautical Sciences, Department of Infrared Astrophysics, Professor, 宇宙圏研究系, 教授 (40135299)
• Project Period (FY): 2000 – 2002
• Project Status: Completed (Fiscal Year 2002)
• Budget Amount: ¥3,700,000 (Direct Cost: ¥3,700,000); Fiscal Year 2002: ¥600,000 (Direct Cost: ¥600,000); Fiscal Year 2001: ¥900,000 (Direct Cost: ¥900,000); Fiscal Year 2000: ¥2,200,000 (Direct Cost: ¥2,200,000)
• Keywords: Infrared observations / T Tauri stars / Time variation / Infrared camera / Monitor observations / Star formation / 星生成領域 / 星形成領域

Research Abstract

The ultimate goal of this project is to find out the origin of time variation of brightness of T Tauri stars by monitor observations at infrared wavelength. The origin is supposed to associate with the surface activities of T-Tauri star as well as activity at the contact region between the photosphere and the disk. Infrared monitor observations are still very limited in area as well as the time intervals.
We prepared infrared camera and small telescope, which enable us to use rather wide field of view covering approximately 0.3 square degree of arc, to realize efficient observations. The system also has capability to observe several T Tauri stars as well as flux standard stars (second calibrators) in a single field of view. The sensitivities of the system, with 10 of signal-to-noise ratio at 20 minutes of exposure, are 17 magnitude at J band, 15.5 magnitude at H band, and 14 magnitude at K' band, whose depth is enough to observe T Tauri stars in Taurus star forming regions (lying at 140pc from us). To develop the camera part, we first started evaluation of InSb infrared array which is a test model of the infrared camera on board ASTRO-F mission. We carried out the evaluations using liquid He cooled chamber to operate the sensor device, COGITO-3 multi control system to operate the detector, and 32 cm Newtonian telescope in Komaba campus. The optics to minimize the Coma aberration was also developed to get a wide field of view at infrared wavelength. We have made monitor observations of T Tauri stars and been extending the projected observations of star forming regions with ASTRO-F.

Research Products

• [Journal Article] First Detection of an Optical Dust Trail along the Orbit of 22P/Kopff (2002)
  • Author(s): Ishiguro, M., Watanabe, J., Usui, F., Tanigawa, T., Kinoshita, D., Suzuki, J., Nakamura, R., Ueno, M., Mukai, T.
  • Journal Title: The Astrophysical Journal 572
  • Description: 「研究成果報告書概要(和文)」より
• [Journal Article] First Detection of an Optical Dust Trail along the Orbit of 22P/Kopff (2002)
  • Author(s): Ishiguro, M., Watanabe, J., Usui, F., Tanigawa, T., Kinoshita, D., Suzuki, J., Nakamura, R., Ueno, M., Mukai, T
  • Journal Title: The Astrophysical Journal Vol.572
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] VLBI Monitoring Observation of the Semi-Regular Variable Star R Crateris (2001)
  • Author(s): Ishitsuka, J.K., Imai, H., Omodaka T., Ueno M., Kameya, O., Sasao T., Morimoto M., Miyaji T.
  • Journal Title: Pub.Astron.Soc.Japan 153 Pages: 2074-2088
  • Description: 「研究成果報告書概要(和文)」より
• [Journal Article] VLBI Monitoring Observation of the Semi-Regular Variable Star R Crateris (2001)
  • Author(s): Ishitsuka, J.K., Imai, H., Omodaka T., Ueno M., Kameya, O., Sasao T., Morimoto M., Miyaji T.
  • Journal Title: Pub.Astron.Soc.Japan Vol.153 Pages: 2074-2088
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] IRC (Infrared Camera) onboard ASTRO-F (IRIS) : design overview and current status (2000)
  • Author(s): Watarai, H., Fujita, S., Ishihara, D., Kataza, H., Kim, WJ., Maeda, I., Matsuhara, H., Matsumoto, T., Murakami, H., Negishi, T., Onaka, T., Ootsubo, T., Takeyama, N., Uemizu, K., Ueno, M., Wada, T.
  • Journal Title: SPIE 4013 Pages: 114-122
  • Description: 「研究成果報告書概要(和文)」より
• [Journal Article] Search for Exozodiacal Dust : Are Vega-like Stars Common? (2000)
  • Author(s): Hirao, T., Matsuo, H., Matsuura, S., Murakami, H., Noda, M., Ootsubo, T., Ueno, M.
  • Journal Title: Mid- and Far Infrared Astronomy and Future Space Missions ISAS research note Special issue 14 Pages: 19-26
  • NAID: 120006837955
  • Description: 「研究成果報告書概要(和文)」より
• [Journal Article] IRC (Infrared Camera) onboard ASTRO-F (IRIS) : design overview and current status (2000)
  • Author(s): Watarai, H., Fujita, S., Ishihara, D., Kataza, H., Kim, W.J., Maeda, I., Matsuhara, H., Matsumoto, T., Murakami, H., Negishi, T., Onaka, T., Ootsubo, T., Takeyama, N., Uemizu, K., Ueno, M., Wada, T
  • Journal Title: SPIE vol.4013 Pages: 114-122
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Search for Exozodiacal Dust : Are Vega-like Stars Common? (2000)
  • Author(s): Hirao, T., Matsuo, H., Matsuura, S., Murakami, H., Noda, M., Ootsubo, T., Ueno, M
  • Journal Title: Mid-and Far Infrared Astronomy and Future Space Missions ISAS research note Special issue Vol.14 Pages: 19-26
  • NAID: 120006837955
  • Description: 「研究成果報告書概要(欧文)」より
• [Publications] Ishiguro, M, Ueno, M 他: "First Detection of an Optical Dust Trail along the Orbit of 22P/Kopff"The Astrophysical Journal. 572. L117 (2002)
• [Publications] M.Ueno, 他: "Infrared camera onboard Venus climate orbiter (VCO)"IR Space Telescopes and Instruments, SPIE. 4850. 157 (2003)
• [Publications] Ishitsuka, J.K., Ueno M, 他: "VLBI Monitoring Observation of the Semi-Regular Variable Star R Crateris"Pub. Astron. Soc. Japan. 53. 2074 (2001)
• [Publications] Ueno, M: "Survey of Vega-like stars and observational study of planet formation with ASTRO-F"Planetary Systems in the Universe, IAU. 202. 105 (2003)
• [Publications] Ueno, M., 他: "Focal Plane Instruments onboard HII/L2 Mission (SPICA)"Mid-and Far Infrared Astronomy and Future Space Missions. 197 (2000)
• [Publications] M.Ishiguro, M.Ueno, 他: "Development of zodiacal light observation system: WIZARD"Specialized Optical Developments in Astronomy, SPIE. 4842. 27 (2002)
• [Publications] Ueno.M.: "Survey of Vega-like stars and observational study of planet formation with ASTRO-F"Planetary Systems in the Universe. IAU 202. 105-108 (2000)
• [Publications] Ishituska, J.K., Imai, H., Omodaka T., Ueno M., Kameya, O., Sasao T., Morimoto M., Miyaji T.: "VLBI Monitoring Observation of the Semi-Regular Variable Star R Crateris"Pub. Astron. Soc. Japan. Vol.53. 2074-2085 (2000)
• [Publications] Hong, S.S., Park, S.H., Lee, M.G., Kim, W.T., Kim, H.G., Ueno, M.: "A Multi-Wavelength Study of a Cometary Globule"Observational Astrophysics in Asia and its Future, Ed. P. S. Chen. C3-C7 (1993)
• [Publications] Hirao, T., Matsuo, H., Matsuura, S., Murakami, H., Noda, M., Ootsubo, T., Ueno, M: "Search for Exozodiacal Dust: Are Vega-like Stars Common?"Mid-and Far Infrared Astronomy and Future Space Missions. 19-26 (2000)
• [Publications] Ueno, M., Matsuhara, H., Murakami, H., Nakagawa, T.: "Focal Plane Instruments onboard HII/L2 Mission(SPICA)"Mid-and Far Infrared Astronomy and Future Space Missions. 197-202 (2000)