Astronomy and Astrophysics – Astronomy
Scientific paper
May 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982aipc...83...48m&link_type=abstract
IN: The galactic center; Proceedings of the Workshop, Pasadena, CA, January 7, 8, 1982 (A83-40676 19-90). New York, American Ins
Astronomy and Astrophysics
Astronomy
63
Balloon-Borne Instruments, Galactic Bulge, Galactic Nuclei, Infrared Astronomy, Milky Way Galaxy, Near Infrared Radiation, Brightness Distribution, Interstellar Extinction, Mass To Light Ratios
Scientific paper
A balloon borne IR telescope was used to make observations of the central bulge of the Galaxy at 2.4 and 3.4 microns with a FWHM bandwidth of 0.09 and 0.14 micron, respectively. Measurements were made of the interstellar extinction and the mass to luminosity ratio, and a model of the bulge was constructed with the data along the minor axis. An empirical formula was derived for the volume emissivity at 2.4 micron and a surface brightness distribution was defined. An interstellar extinction of within 4 mag of 15 mag was obtained for the region within 1 deg of the center. The mass/luminosity relation yielded a value within 0.4 of 2.0. The near-IR observations were useful for constraining the model of the bulge and the nonuniform density and velocity distribution of the central gas clouds.
Hayakawa Saito
Koizumi Hiroyasu
Matsumoto Toshio
Murakami Hitoshi
Thomas Jacquelyn A.
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