Mining Hot, Luminous Stars in the Southern Sky: A New Look at the Magellanic-Cloud System

Details Mining Hot, Luminous Stars in the Southern Sky: A New Look at the Magellanic-Cloud System Mining Hot, Luminous Stars in the Southern Sky: A New Look at the Magellanic-Cloud System

Jan 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aas...21911406c&link_type=abstract

American Astronomical Society, AAS Meeting #219, #114.06

Astronomy and Astrophysics

Astronomy

Scientific paper

We have used absolute proper motions and V ccd photmetry from the Southern Proper Motion 4 (SPM4) catalog, combined with GALEX UV and 2MASS photometry to select candidate hot, luminous stars in the southern sky (dec < 20 deg). In areas where the SPM4 has only photographic V, we have supplemented our database with V ccd photometry from APASS - the AAVSO Photometric All Sky Survey - Data Release 3. We therefore explore an area of about 7900 square degrees, focusing on the magnitude range V = 13 to 16.5. With the aid of the proper motions, we
further distinguish kinematically different populations of nearby and distant stars. In particular OB-type members of the Magellanic Clouds and Bridge are mapped in areas not previously explored by photometric surveys. Besides the known and well-populated SMC wing, we find candidate OB stars in a path leading all the way from the wing to the LMC, and well-defined clumps in the LMC's periphery. Most of our candidates do not coincide spatially with the clusters and associations cataloged in the Clouds. The mapping of these types of stars will help us to understand the dynamical interaction between the
Clouds in the recent past.

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