Census of the Embedded Population of the Vela Molecular Remnant Cloud-D

Physics

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Scientific paper

We propose to exploit the large-scale, high-sensitivity imaging capabilities of IRAC and MIPS on board SPITZER in order to perform a deep IR survey toward a molecular cloud (D) in the Vela Molecular Ridge (VMR-D). This cloud hosts a large number of young embedded sources, both in clusters and isolated, as well as mm-emission peaks associated with gaseous filamentary structure, discovered by our ground based near-IR and mm observations. By correlating the SPITZER maps with the existing data, our aims are (i) to identify and classify, from the combined NIR, mid-IR and mm SEDs, the embedded young object population of the cloud. This will be used to characterize the protostellar content and to understand the effects of the environments on the star forming process; (ii) to obtain an unbiased map of the protostellar jets distribution through the detection of shocked emission lines falling in the IRAC filters; (iii) to define a sample of well selected proto-stellar objects located in the southern hemisphere for future interferometric follow-up with ALMA.

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