Detection of sulphur in the galactic center

Details Detection of sulphur in the galactic center Detection of sulphur in the galactic center

Jan 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983stin...8319661h&link_type=abstract

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Astronomy and Astrophysics

Astronomy

Abundance, Galactic Nuclei, Milky Way Galaxy, Sulfur, Composition (Property), Electron Density (Concentration), Electron Energy, Excitation, Extinction, H Ii Regions, Hydrogen, Infrared Astronomy, Ions

Scientific paper

A strong detection at the (SIII) 18.71 micron line is reported for the Galactic Center region, Sgr A West. A line flux of 1.7 + or - 0.2x10 to the -17th power W cm(-2) is found for a 20-arc second beam-size measurement centered on IRS 1. A preliminary analysis indicates that the SIII abundance relative to hydrogen is consistent with the cosmic abundance of sulfur, 1.6x10 to the -5th power, 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 HII regions.

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