Isolated infrared nebula (IRAS 16148-5011) and evidence of triggered star formation

S. S. Borgaonkar1*,D. K. Ojha1, T. Nagayama2, M. Tamura3,S. K. Ghosh1and M. R. Samal4
1Tata Institute of Fundamental Research, Homi Bhabha Road, Colaba, Mumbai 400 005, India
2Department of Astronomy, Kyoto University, Kyoto 606-8502, Japan
3National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan
4Aryabhatta Research Institute of Observational Sciences, Nainital 263 129, India

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Abstract

We present a near-infrared (NIR) and radio study of IRAS 16148-5011 star forming region (SFR). This nebula was accidentally identified in the K-band, during the survey of the Galactic plane for obscured galaxies, with 1.4-m InfraRed Survey Facility (IRSF) telescope in 2004. It is located near the Galactic plane (l = 333.05 °, b = +0.04 °) and is isolated within an area of ~ 22' x 22' on the sky. This is an active SFR as revealed from NIR and radio data and is a good example for studying the isolated star formation in our Galaxy.

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Keywords : stars: formation - ISM: HII regions - triggered star formation