New list of OB associations (Melnik+, 1995)

Physics

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Milky Way, Associations: Stellar, Stars: Ob, Stars: Early-Type

Scientific paper

We identified 88 associations with at least 5 members which average characteristics are shown in Table 1 of the paper by Mel'nik and Efremov (1995PAZh...21...13M). The new table (list.dat) exhibits the list of 1392 stars -- members of 88 associations of the new partition. For each star we give its name, spectral type, V magnitude, galactic coordinates l and b, distance from the Sun rBH. All these values are taken from the catalog by Blaha and Humphreys (1989AJ..98...1598B) which includes two parts: the catalog of young stars -- members of associations or clusters and the catalog of field stars. The last two columns exhibit the name of association to which the star is included in the partition by Blaha and Humphreys (Assc_BH) and in the partition by Mel'nik and Efremov (Assc_ME). The letter F in the last but one column means that it is a field star in the catalog by Blaha and Humphreys (1989AJ..98...1598B). There are some evidences that the distance scale by Blaha and Humphreys (r_BH) should be shorten by 10-20% (Dambis et al. 2001AstL..27...58D; Mel'nik and Dambis 2009, Cat. J/MNRAS/400/518).
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