Star counts and visual extinctions in dark nebulae

Details Star counts and visual extinctions in dark nebulae Star counts and visual extinctions in dark nebulae

Apr 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978aj.....83..363d&link_type=abstract

Astronomical Journal, vol. 83, Apr. 1978, p. 363-372. Research supported by the Aerospace Corp.

Astronomy and Astrophysics

Astronomy

88

Interstellar Extinction, Interstellar Matter, Nebulae, Star Distribution, Dust, Interstellar Gas, Red Shift

Scientific paper

Application of star count techniques to the determination of visual extinctions in compact, fairly high-extinction dark nebulae is discussed. Particular attention is devoted to the determination of visual extinctions for a cloud having a possibly anomalous ratio of total to selective extinction. The techniques discussed are illustrated in application at two colors to four well-known compact dust clouds or Bok globules: Barnard 92, B 133, B 134, and B 335. Minimum masses and lower limits to the central extinction of these objects are presented.

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