Deep Near-Infrared Surveys and Young Brown Dwarf Populations in Star-Forming Regions

M. Tamura, T. Naoi, Y. Oasa, Y. Nakajima, C. Nagashima, T. Nagayama, D. Baba, T. Nagata, S. Sato, D. Kato, M. Kurita, K. Sugitani (+3 others)
2003 Symposium - International astronomical union  
We are currently conducting three kinds of IR surveys of star forming regions (SFRs) in order to seek for very low-mass young stellar populations. First is a deep JHKs-bands (simultaneous) survey with the SIRIUS camera on the IRSF 1.4m or the UH 2.2m telescopes. Second is a very deep JHKs survey with the CISCO IR camera on the Subaru 8.2m telescope. Third is a high resolution companion search around nearby YSOs with the CIAO adaptive optics coronagraph IR camera on the Subaru. In this
more » ... on, we describe our SIRIUS camera and present preliminary results of the ongoing surveys with this new instrument.
doi:10.1017/s0074180900210346 fatcat:qm7umewohjfgpcrw2agku7nvxy