A detailed study of a 6 deg diameter field in Scutum. I - Data presentation and overall description of the interstellar matter distribution

Details A detailed study of a 6 deg diameter field in Scutum. I - Data presentation and overall description of the interstellar matter distribution A detailed study of a 6 deg diameter field in Scutum. I - Data presentation and overall description of the interstellar matter distribution

Jan 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990ap%26ss.163..275r&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 163, no. 2, Jan. 1990, p. 275-332.

Astronomy and Astrophysics

Astronomy

10

Balloon-Borne Instruments, Interstellar Extinction, Scutum Constellation, Ultraviolet Astronomy, Astronomical Photometry, Astronomical Spectroscopy, B Stars, Interstellar Matter, O Stars, Star Distribution

Scientific paper

Data on a detailed study of the absorption and interstellar matter distribution in the 6-deg diameter field centered on the star Epsilon Scutum, using frames from the SCAP-2000 UV survey, are presented. Ultraviolet magnitudes at 2000 A were obtained, and 322 stars were measured in the Geneva photometric system. In order to determine spectral types and confirm the distance determination, medium-resolution spectra were obtained for a small number of photometrically distant objects. An overall description of the distribution of interstellar material in the UV is made using star counting methods. Variations of the extinction law in different parts of the field are discussed. A new distance determination of the Sct OB2 association is proposed, and a list of additional probable members of the association is presented.

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