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The Near-IR Extinction Law

Published online by Cambridge University Press:  21 October 2010

Joseph J. Stead  and
Melvin G. Hoare
Joseph J. Stead
Affiliation:
School of Physics and Astronomy, University of Leeds, Leeds, LS2 9JT, UK
Melvin G. Hoare
Affiliation:
School of Physics and Astronomy, University of Leeds, Leeds, LS2 9JT, UK
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Abstract

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We show that the power-law slope of the near-IR extinction law is significantly steeper than previously thought. Simulated colour-colour diagrams including a stellar population synthesis, realistic extinction distribution along the line-of-sight and synthesis through the filter profiles are compared to data from the UKIDSS Galactic Plane Survey. The slope of extinction with wavelength is found to be 2.14 ± 0.05 for total visual extinctions up to about 25 magnitudes and for a number of locations.

Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 5 , Highlights H15: Highlights of Astronomy , November 2009 , pp. 784
Copyright
Copyright © International Astronomical Union 2010

References

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