Astronomy and Astrophysics – Astrophysics
Scientific paper
Apr 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990ap%26ss.166..315c&link_type=abstract
Astrophysics and Space Science (ISSN 0004-640X), vol. 166, no. 2, April 1990, p. 315-330.
Astronomy and Astrophysics
Astrophysics
127
Dark Matter, Interstellar Extinction, Reflection Nebulae, Astronomical Photometry, Cosmic Dust, Interstellar Matter, Milky Way Galaxy
Scientific paper
The dependence of interstellar extinction on distance in the direction of a dark cloud around the reflection nebula NGC 1333 is determined on the basis of photoelectric Vilnius photometry and photometric classification of 78 stars. Two dust clouds are noted at distances 160 and 220 pc. The first one, with mean extinction of 0.4 mag, is concluded to belong to the Taurus cloud complex and the second cloud, with mean extinction of 1.8 mag, belongs to the chain of dark clouds and other young objects which is almost perpendicular to the spiral arm but lies about 80 pc below the Galactic plane. The star BD +30 459 deg, which illuminates the NGC 1333 nebula, is at a distance 212 pc from the sun. No extinction increase behind the Perseus cloud is detected.
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