OBSERVATIONS AND MODELING OF THE 2-25 MICRONS EMISSION FROM HIGH MASS PROTOSTELLAR OBJECT CANDIDATES


James M. De Buizer, Mayra Osorio, Nuria Calvet

Gemini Observatory, Instituto de Astrofísica de Andalucía CSIC, Harvard-Smithsonian Center for Astrophysics

This is a report on detailed modeling of young high-mass protostellar candidates during their most embedded and obscured phases. We performed narrowband mid-infrared imaging of three candidate high-mass protostellar objects in G11.94-0.62, G29.96-0.02, and G45.07+0.13 at Gemini
Observatory using the Thermal-Region Camera and Spectrograph (T-ReCS). The sources were imaged through up to 11 narrowband filters, sampling their SEDs over the entire 2--25 micron infrared range.
For the first time, we have fitted the observed SEDs of massive protostars with models that take into account departures from spherical symmetry in the infalling envelopes. In this way, we
have been able to back out of the models detailed physical parameters for these
earliest stages of massive stellar life. Our detailed modeling suggests that massive star formation can proceed in a way very similar to the formation of low-mass stars

Reference: astro-ph/0508376
Status: Manuscript has been accepted

Weblink: http://www.ctio.noao.edu/~debuizer/

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Email: osorio@iaa.es