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New OB-association in Pup — CMa

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Abstract

A new method of determination of distances to stellar associations is proposed. This method is based on the measurements of mean thicknesses of globules of the systems of dark globules connected with that association. It is shown that the method is in good agreement with other known methods. A new grouping of OB stars in Pup-CMa is found. It is shown that this grouping has properties characteristic for OB-associations: the stars of that grouping have similar distances, similar radial velocities, the grouping is connected with molecular clouds, with Herbig-Haro objects, and cometary nebulae. All these results are in favour of this grouping to be a new OB-association. We named that association OB-association Pup-CMa. The preliminary results of12CO observations of molecular clouds connected with that association are also given. The radial velocities of these clouds are in good agreement with the mean radial velocity of stars in the association in Pup-CMa.

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Authors and Affiliations

  1. V. A. Ambartsumian Byurakan Astrophysical Observatory, Armenia

    A. L. Gyulbudaghian & J. May

Authors
  1. A. L. Gyulbudaghian
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  2. J. May
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Additional information

Translated from Astrofizika, Vol. 42, No. 2, pp. 179–188, April–June, 1999.

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Gyulbudaghian, A.L., May, J. New OB-association in Pup — CMa. Astrophysics 42, 132–139 (1999). https://doi.org/10.1007/BF02711599

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  • DOI: https://doi.org/10.1007/BF02711599

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