Extended Green Objects (EGOs) In The GLIMPSE Survey: A New Sample Of Massive Young Stellar Object Outflow Candidates

Details Extended Green Objects (EGOs) In The GLIMPSE Survey: A New Sample Of Massive Young Stellar Object Outflow Candidates Extended Green Objects (EGOs) In The GLIMPSE Survey: A New Sample Of Massive Young Stellar Object Outflow Candidates

Jan 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21343913c&link_type=abstract

American Astronomical Society, AAS Meeting #213, #439.13; Bulletin of the American Astronomical Society, Vol. 41, p.315

Astronomy and Astrophysics

Astronomy

Scientific paper

Using images from the Spitzer GLIMPSE Legacy survey, we have identified more than 300 sources with extended 4.5 micron emission, thought to trace shocked molecular gas in protostellar outflows (called EGOs, Extended Green Objects, for the common coding of the [4.5] band as green in 3-color composite IRAC images). We present results of VLA surveys of EGOs for two types of masers associated with outflow activity in massive star forming regions: 6.7 GHz Class II methanol masers (using the new EVLA receivers) and 44 GHz Class I methanol masers. These high resolution observations allow detailed comparison with IRAC and MIPS images. We also present results of a JCMT survey of EGOs in molecular outflow tracers (HCO+ and SiO), and compare the results with those of the maser surveys.
Support for this work was provided by NSF grant AST-0808119, by a NRAO Graduate Summer Student Research Assistantship to C. Cyganowski, and by a NSF Graduate Research Fellowship to C. Cyganowski.

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