NOAO > Observing Info > Approved Programs > 2010B-0204
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NOAO > Observing Info > Approved Programs > 2010B-0204 |
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PI: Jennifer Karr, Academia Sinica, jkarr@asiaa.sinica.edu.tw
Address: Institute of Astronomy and Astrophysics (ASIAA), PO Box 23-141, Taipei 10617, Taiwan, ROC
CoI: Nagayoshi Ohashi, ASIAA
CoI: Michihiro Takami, ASIAA
CoI: Shigehisa Takakuwa, ASIAA
CoI: Shi-Ping Lai, National Tsing Hua University (NTHU)
CoI: Masaaki Hiramatsu, NTHU/ASIAA
CoI: T.H. Hseih, NHTU
CoI: C.L. Hung, NTHU
Title: Probing the Mystery of VeLLOs
Abstract:
Very Low Luminosity objects (VeLLOs) are currently one of the most
mysterious objects in observational star formation. They share the
characteristics of very low luminosity and YSO colours but show no
uniformity in any other observational characteristic. One explanation
for their very low luminosity is that they are extremely young
protostars in the earliest phase of accretion; other possibilities
include young brown dwarfs or YSOs in a quiescent phase of episodic
accretion.
To further our understanding of these objects, we propose low
resolution NIR grism spectroscopy with OSIRIS to investigate the nature
of the central sources for a sample of VeLLO candidates. In this
wavelength range there are multiple spectroscopic features which can be
used to identify outflow and accretion signatures, characterize young
brown dwarfs, and probe the nature of more evolved YSOs.
National Optical Astronomy Observatory, 950 North Cherry Avenue, P.O. Box 26732, Tucson, Arizona 85726, Phone: (520) 318-8000, Fax: (520) 318-8360
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NOAO > Observing Info > Approved Programs > 2010B-0204 |
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