Polarimetric Investigations of Stellar Associations |
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| Authors: | E Ye Khachikian M A Eritsian R Kh Hovhannessian |
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| Institution: | (1) V. A. Ambartsumian Byurakan Astrophysical Observatory, Armenia |
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| Abstract: | The degree of polarization of light from stars in 44 O B associations as a function of interstellar absorption is investigated. It is shown that the character of the dependence of P on A
V for stars in associations and stars not in associations depends on the value of A
V: for A
V  2
m
.5 it has a linear character and is the same for both groups of stars. For A
V > 2
m
.5 the dependence of P on A
V for stars in and not in associations departs from linearity and for A
V = 4
m
.5 it reaches P
ass = 1.8% and P
nonass = 1%, respectively. Such a difference is explained by the additional depolarization in stellar associations. Such strong depolarization in associations may be due to the overall magnetic field of the Galaxy and to physical peculiarities in the association itself. |
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| Keywords: | stars stars associations stars polarization |
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