Interstellar extinction in the vicinity of Galactic center thermal radio emission regions
Angela S. Cotera (1) Janet P. Simpson (2,4), Edwin F. Erickson (2), Sean W. J. Colgan (2.4) Michael G. Burton(3)
(1) NASA/Jet Propulsion Laboratory 100-22, 4800 Oak Grove, Pasadena, CA 91109 (2) NASA Ames Research Center, Moffett Field, CA 94035 (3) University of New South Wales, School of Physics, P.O. Box 1, 2033 Kensington, NSW, Australia (4) The SETI Institute
Paper: to appear in the proceedings of the 4th ESO/CTIO conference: The Galactic Center
Abstract:
Broad band J, H and K' and spectral Br gamma 2.166 micron images have been obtained in four areas surrounding regions of thermal radio emission. Localized variations in the extinction are examined by means of color and comparison of the observed Br gamma flux with the Br gamma emission predicted from radio continuum data.
Results show few spatial variations and little correlation with the position of the radio emission features.
Preprints available from the authors at cotera@ipac.caltech.edu
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