Detection of sulfur in the galactic center

Details Detection of sulfur in the galactic center Detection of sulfur in the galactic center

Apr 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983apj...267l..37h&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor, vol. 267, Apr. 1, 1983, p. L37-L40.

Astronomy and Astrophysics

Astronomy

9

Astronomical Spectroscopy, Galactic Nuclei, Interstellar Matter, Milky Way Galaxy, Sulfur, Abundance, H Ii Regions, Infrared Astronomy, Line Spectra

Scientific paper

A strong detection at the S III forbidden 18.71 micron line is reported for the galactic center region, Sgr A West. A line flux of 1.7 + or - 0.2 x 10 to the -17th W/sq cm is found for a 20 inch beam size measurement centered on IRS 1. A preliminary analysis indicates that the S III abundance relative to hydrogen is consistent with the cosmic abundance of sulfur, 0.000016, if a filling factor of unity within the known clumps is assumed. However, the sulfur abundance in the galactic center may be as much as a factor of 3 overabundant if a filling factor of 0.03 is adopted, a value found to hold for some galactic H II regions.

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