High-resolution far-infrared observations of the galactic center

Details High-resolution far-infrared observations of the galactic center High-resolution far-infrared observations of the galactic center

Apr 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976apj...205l..69h&link_type=abstract

Astrophysical Journal, vol. 205, Apr. 15, 1976, pt. 2, p. L69-L73.

Astronomy and Astrophysics

Astronomy

31

Far Infrared Radiation, Galactic Nuclei, Infrared Astronomy, Cosmic Dust, Optical Density, Spectral Energy Distribution, Thermal Emission

Scientific paper

A map at 53 microns with 17-arcsec resolution and three-color observations at 53, 100, and 175 microns with 30-arcsec beams of Sgr A are presented. Sagittarius A is resolved into two main sources, one associated with the cluster of strong 10-micron sources and another about 45 arcsec to the southwest coincident with a weak 10-micron source. The dust temperature peaks near the strong 10-micron sources, but the 100-micron and 175-micron fluxes and the far-infrared optical depth are greatest near the southwest source. The amount of dust required to explain the far-infrared emission is comparable to that observed in absorption in the near-infrared.

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