Near-Infrared Spectroscopy of Faint Companions around Young Stellar Objects Associated with the Taurus Molecular Cloud
| Autor: | Tomoyuki Kudo, Miki Ishii, Satoshi Mayama, Motohide Tamura, Yoichi Itoh, Jun-Ichi Morino, Masahiko Hayashi, Yumiko Oasa, Misato Fukagawa, Tae-Soo Pyo, Takuya Yamashita, Saeko S. Hayashi |
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| Jazyk: | angličtina |
| Rok vydání: | 2008 |
| Předmět: |
Physics
Young stellar object Molecular cloud Near-infrared spectroscopy Astrophysics::Instrumentation and Methods for Astrophysics Astronomy Astronomy and Astrophysics Astrophysics::Cosmology and Extragalactic Astrophysics Astrophysics law.invention Stars Space and Planetary Science law Astrophysics::Solar and Stellar Astrophysics Astrophysics::Earth and Planetary Astrophysics Spectroscopy Subaru Telescope Adaptive optics Coronagraph Astrophysics::Galaxy Astrophysics |
| Zdroj: | Publications of the Astronomical Society of Japan. 60(2):209-218 |
| ISSN: | 0004-6264 |
| Popis: | We have conducted near-infrared spectroscopy of 26 faint objects around young stellar objects in the Taurus molecular cloud. These objects were detected during a course of near-infrared coronagraphic searches for companions around 72 young stellar objects with the Subaru Telescope and the near-infrared coronagraph CIAO (coronagraphic imager with adaptive optics). A comparison of the Subaru and HST archive images revealed that three central stars and faint companions share common proper motions, suggesting that they are physically associated with each other. None of the 26 sources show deep water absorption bands at near-infrared, except for DH Tau B. This result indicates that all of them, but DH Tau B, have a high photospheric temperature or a large amount of excess from circumstellar materials. |
| Databáze: | OpenAIRE |
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