Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21725807h&link_type=abstract
American Astronomical Society, AAS Meeting #217, #258.07; Bulletin of the American Astronomical Society, Vol. 43, 2011
Astronomy and Astrophysics
Astronomy
Scientific paper
Cygnus-X is the richest known concentration of massive protostars and the largest OB associations in the nearest 2 kpc, and thus is a unique laboratory to study the poorly constrained early stages of massive star formation. We have conducted an unbiased survey of the 24 square degree Cygnus-X region with Spitzer/IRAC and MIPS to study the high-mass and associated low-mass star formation.
Spitzer, however, is unable to resolve some of the more complex regions, and some sources are bright enough to saturate IRAC and MIPS in the shortest integration times. We present here initial results from follow-up 8 - 24 micron imaging obtained at the IRTF of a sample of massive star forming regions selected from our Spitzer survey. The higher spatial resolution at the IRTF allows us to resolve multiple sources and determine the distribution of flux between the various protostars and emission from the ISM in their vicinity. We can also obtain fluxes for regions that are saturated in the Spitzer data. The sample includes objects with a range of masses and at various stages of evolution. These data, along with the Spitzer images and IRS spectra, will enable us to determine the properties of these massive stars and to examine the effects that they are having on their surroundings, including outflows into the nearby ISM and in triggering further generations of star formation.
Doering Ryan L.
Hora Joseph L.
Smith Harold A.
Spitzer Cygnus-X Survey Team
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