Spitzer Observations of Massive Protostars Associated with Methanol Masers

Details Spitzer Observations of Massive Protostars Associated with Methanol Masers Spitzer Observations of Massive Protostars Associated with Methanol Masers

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aas...20910517s&link_type=abstract

2007 AAS/AAPT Joint Meeting, American Astronomical Society Meeting 209, #105.17; Bulletin of the American Astronomical Society,

Astronomy and Astrophysics

Astronomy

Scientific paper

Methanol masers, detected in the radio at 6.7 or 12.2 GHz, are formed by stimulated microwave emission and are often found toward massive star-forming regions, sometimes without accompanying radio continuum emission or ultra-compact HII regions. This suggests that they are signposts of the earliest stages of high-mass star formation. The precise location where methanol masers form in the protostellar environment is not well known. Knowing where they lie in relation to rotating disks or high velocity outflows will help clarify the relationship between maser activity and high-mass star formation. We present preliminary analysis of Spitzer observations of four massive protostars traced by methanol masers (IRAS 20126+4104, AFGL 5180, S233, S269). Each protostar was imaged with the Spitzer Infrared Array Camera (IRAC) in subarray mode in all four IR channels, ranging from 3.6 to 8.0 microns. We will discuss the mid-IR morphology relative to the accurately known methanol maser positions.
This study is supported by the Spitzer Science Center through JPL grant 1264905.

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