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The molecular cloud and embedded young stellar population associated with IRAS 18236–1205

Published online by Cambridge University Press:  18 January 2010

Ricardo Retes
Affiliation:
Instituto Nacional de Astrofísica, Óptica y Electrónica (INAOE), Mexico
Abraham Luna
Affiliation:
Instituto Nacional de Astrofísica, Óptica y Electrónica (INAOE), Mexico
Divakara Mayya
Affiliation:
Instituto Nacional de Astrofísica, Óptica y Electrónica (INAOE), Mexico
Luis Carrasco
Affiliation:
Instituto Nacional de Astrofísica, Óptica y Electrónica (INAOE), Mexico
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Abstract

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We test a membership method to select embedded young stellar objects (YSOs) from a Galactic molecular cloud with ongoing massive star formation using multiband analysis. We select and discuss the embedded stellar population in the molecular cloud associated with IRAS 18235−1205, a small, geometrically well-defined Galactic molecular cloud. The IRAS source has infrared fluxes characteristic of an UCHii region, CS(J = 2 − 1) emission, and methanol and water maser emission, suggesting that this region is a good candidate for studies of young, massive star formation. The selection method of embedded stellar populations is based on the spatial distribution of 13CO(J = 1 − 0) and Spitzer/MIPS 24 μm point sources. Photometric analysis using near/mid-infrared images are used to test our selection criteria. Three objects are associated with the IRAS source; two have a characteristic spectral-energy distribution (SED) of a Class I/0 object (protostar) and the third has an SED of Class II.

Type
Contributed Papers
Copyright
Copyright © International Astronomical Union 2010