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arXiv · 0706.1664

A new young stellar cluster embedded in a molecular cloud in the far outer Galaxy

Joao L. Yun·Ana Lopez-Sepulcre·Jose M. Torrelles
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Abstract

We report the discovery of a new young stellar cluster and molecular cloud located in the far outer Galaxy, seen towards IRAS 06361-0142, and we characterise their properties. Near-infrared images were obtained with VLT/ISAAC through JHKs filters, millimetre line observations of CO(1-0) were obtained with SEST, and VLA 6 cm continuum maps obtained from archive data. The cloud and cluster are located at a distance of 7 kpc and a Galactocentric distance of 15 kpc, well in the far outer Galaxy. Morphologically, IRAS 06361-0142 appears as a cluster of several tens of stars surrounded by a nearly spherical nebular cavity centred at the position of the IRAS source. The cluster appears composed of low and intermediate-mass, young reddened stars with a large fraction having cleared the inner regions of their circumstellar discs responsible for (H - Ks) colour excess. The observations are compatible with a 4 Myr cluster with variable spatial extinction between Av = 6 and Av = 13.

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Joao L. Yun, Ana Lopez-Sepulcre, Jose M. Torrelles. 2007-06-12. A new young stellar cluster embedded in a molecular cloud in the far outer Galaxy. https://doi.org/10.1051/0004-6361:20077570

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