Catalog of high extinction clouds (Rygl+, 2010)

Details Catalog of high extinction clouds (Rygl+, 2010) Catalog of high extinction clouds (Rygl+, 2010)

Apr 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010ycat..35159042r&link_type=abstract

VizieR On-line Data Catalog: J/A+A/515/A42. Originally published in: 2010A&A...515A..42R

Computer Science

Molecular Clouds, Interstellar Medium, Infrared Sources, Millimetric/Submm Sources, Radio Lines, Extinction

Scientific paper

We made maps of the 3.6-4.5 microns color excess between the two shortest wavelength Spitzer IRAC bands (Fazio et al. 2004ApJS..154...10F). These can be converted to infrared extinction maps using the interstellar extinction law of Indebetouw et al. (2005ApJ...619..931I): one magnitude of 3.6-4.5 microns color excess corresponds to 81.8 magnitudes in visual extinction (see Eq. 2 in our article). Our maps cover -60 degree to 60 degree in Galactic longitude except for 1 degree around the Galactic center and have a resolution of 108". The color excess maps are available as fits files belonging to Fig. 1. All the unknown compact high extinction regions with a color excess above 0.25mag, which were not known as HII regions or high-mass protostellar objects, were catalogued in Table 1 as high extinction clouds (HECs). For a sample of 25 high extinction clouds in the first Galactic quadrant we observed the dust continuum emission at 1.2mm using the MAMBO-2 bolometer. These observations have a much higher angular resolution of 11", allowing to probe the clouds at subparsec scales and study the clumps with them.
(10 data files).

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