The spatial distribution of the interstellar extinction

Details The spatial distribution of the interstellar extinction The spatial distribution of the interstellar extinction

Nov 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980a%26as...42..251n&link_type=abstract

Astronomy and Astrophysics Supplement Series, vol. 42, Nov. 1980, p. 251-281.

Astronomy and Astrophysics

Astrophysics

608

Galactic Structure, Interstellar Extinction, Milky Way Galaxy, Spatial Distribution, Astronomical Photography, Cosmic Dust, Early Stars, F Stars, Ubv Spectra

Scientific paper

Extinction values and distances have been computed from UBV, MK and beta data for more than 11,000 O to F stars, including 7,565 O and B stars. For 1,020 stars two independent distance moduli were derived using absolute magnitudes based on the MK spectral type as well as beta values. The mean value of their differences is less than 0.01 magnitude. With the aid of photographs of the Milky Way 325 fields in the galactic belt between latitudes of -7.6 and 7.6 deg were demarcated in which the extinction and the star density is rather homogeneous. Diagrams of interstellar extinction as a function of distance of these fields are discussed. From the fields with the most reliable of interstellar extinction as a function of distance relations the galactic distribution of the dust up to 3 kpc has been derived.

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