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Dependence on reddening of interstellar column densities in the direction of O stars

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Abstract

We have investigated 14 O-type stars with IUE high resolution SWP spectra in order to improve the relations of element depletions withE(B-V), and to look for other possible relations with two stellar parameters: namely, the rate of mass loss and rotational velocity. The stars were chosen so as to cover several directions in the Galaxy, as well as a wide range in interstellar reddening. Although our data are only crude and were obtained by making several approximations, they show the derived dependence of a parameter, which we call a depletion index, on reddening. We found a clear inverse trend relating the abundance of elements to interstellar reddening, and a crude relation between the increasing depletion and condensation temperature.

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Authors and Affiliations

  1. Astronomical Department of Istanbul University, Turkey

    H. Hüseyín Menteşe

  2. Astronomical Observatory of Trieste, Italy

    H. Hüseyín Menteşe

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  1. H. Hüseyín Menteşe
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Based on observations by the International Ultraviolet Explorer (IUE) collected at the Villafranca Satellite Tracking Station of the European Space Agency.

On leave of absence from the Astronomical Department, Istanbul University.

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Menteşe, H.H. Dependence on reddening of interstellar column densities in the direction of O stars. Astrophys Space Sci 82, 173–187 (1982). https://doi.org/10.1007/BF00651473

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  • DOI: https://doi.org/10.1007/BF00651473

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