Computer Science
Scientific paper
Jun 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985kfnt....1...53k&link_type=abstract
Kinematika i Fizika Nebesnykh Tel (ISSN 0233-7665), vol. 1, May-June 1985, p. 53-63. In Russian.
Computer Science
1
Interstellar Extinction, Interstellar Matter, Milky Way Galaxy, Molecular Clouds, Star Clusters, Star Formation, Cosmic Dust, Early Stars, Galactic Structure, Hot Stars, Nebulae, Open Clusters, Protostars, Stellar Color, Stellar Magnitude, Stellar Spectra
Scientific paper
Spectral types and B and V magnitudes of 1150 stars were used to study the process of interstellar absorption in the W3/W4 region of star formation, a region occupying about 18 square degrees at l = 134.7 deg, b = +0.92 deg. Analysis of the color excesses indicated an absorption complex between 70 and 900 pc from the sun. The dust concentrations coincided with the local spiral arm, as defined by associations and young open clusters. Reddening was observed on the inner side of the local spiral arm at a distance 70-450 pc from the sun. The interarm region between the local and Perseus spiral arms did not contain a significant number of dense dust clouds. An additional absorption region was found near the Perseus spiral arm at a radial distance of 1.7-3.0 kpc. It is shown that the dense dust complexes tend to occur at the ends of the spiral arms, and the density of clouds at the axes of the arms tends to be lower than that of clouds further out. The star formation region W3/W4 was found on the inner side of the Perseus spiral arm, at a distance of about 2.0 kpc.
Kolesnik L. N.
Metreveli M. D.
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