NOAO >   Observing Info >   Approved Programs >   2010B-0204

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Proposal Information for 2010B-0204


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.


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NOAO >   Observing Info >   Approved Programs >   2010B-0204

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