Distribution of OB stars and absorbing matter in the region of the association per OB1

Astronomy and Astrophysics – Astrophysics

Scientific paper

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B Stars, Interstellar Matter, O Stars, Star Distribution, Distance, Stellar Spectrophotometry

Scientific paper

The results are given of spectrophotometric investigation of 86 OB stars in the region of the association Per OB1. The blue (4000-4800 A) absolute spectrophotometric gradients, the color excesses, and the distances of these stars were determined. Analysis of the obtained results makes it possible to draw the following conclusions: (1) the centers of the OB clusters h and Chi Per apparently have a separation of about 1000 parsec along the line of sight; (2) the absorbing matter in the direction of the association Per OB1 is concentrated in the regions occupied by the OB stars.

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