The S201 far-ultraviolet imaging survey. III - A field in Sagittarius

Details The S201 far-ultraviolet imaging survey. III - A field in Sagittarius The S201 far-ultraviolet imaging survey. III - A field in Sagittarius

May 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984apjs...55..101c&link_type=abstract

Astrophysical Journal Supplement Series (ISSN 0067-0049), vol. 55, May 1984, p. 101-125. NASA-Navy-supported research.

Astronomy and Astrophysics

Astronomy

11

Astronomical Catalogs, Astronomical Photography, Early Stars, Far Ultraviolet Radiation, Nebulae, Ultraviolet Astronomy, Astronomical Photometry, Data Reduction, Tables (Data)

Scientific paper

Far-ultraviolet imagery of a 20 deg diameter field in Sagittarius, centered near (1950) R.A. 18 h 34 m, decl. -30 deg 25 arcmin, was obtained by the S201 far-ultraviolet camera during the Apollo 16 mission. In a 10-minute exposure covering the 1250-1600 A wavelength range, 1034 star images are detectable, with a limiting ultraviolet magnitude of about 10. Most of these objects are identified with early-type stars listed in the Smithsonian Astrophysical Observatory Star Catalog, the Catalog of Stellar Identifications, or both, but 203 objects remain unidentified or are identified with late-type stars. The photometric measurements appear to be in reasonable agreement with those of the International Ultraviolet Explorer for stars in common, and with expectations for A0 stars. A detailed photometric study was made of the Messier 8 region, and it is concluded that dust-scattered starlight contributes about half of the total radiation observed from the central region of M8.

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