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Exploring Extinction and Structure in the Milky Way Disk With 2MASS and Spitzer

Published online by Cambridge University Press:  21 October 2010

G. Zasowski ,
S. R. Majewski ,
D. L. Nidever  and
R. Indebetouw
G. Zasowski
Affiliation:
Department of Astronomy, University of VirginiaBox 400325, Charlottesville, VA, 22904USA email: gailis@virginia.edu
S. R. Majewski
Affiliation:
Department of Astronomy, University of VirginiaBox 400325, Charlottesville, VA, 22904USA email: gailis@virginia.edu
D. L. Nidever
Affiliation:
Department of Astronomy, University of VirginiaBox 400325, Charlottesville, VA, 22904USA email: gailis@virginia.edu
R. Indebetouw
Affiliation:
Department of Astronomy, University of VirginiaBox 400325, Charlottesville, VA, 22904USA email: gailis@virginia.edu
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Abstract

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We present new maps of the distribution of both dust and stars across the Galactic disk, based largely on an improved analysis of 2MASS and Spitzer-IRAC data. The infrared extinction law is rederived throughout the disk and we found strong longitudinal variations in both diffuse and dense environments that we incorporate in our analysis.

Keywords

dustextinction — Galaxy: disk — Galaxy: structure — infrared: ISM
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 5 , Highlights H15: Highlights of Astronomy , November 2009 , pp. 783
Copyright
Copyright © International Astronomical Union 2010

References

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Zasowski, G. et al. , 2009, ApJ, submittedGoogle Scholar