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The discovery of a low mass, pre-main-sequence stellar association around gamma Velorum

M. Pozzo·R. D. Jeffries·T. Naylor·E. J. Totten·S. Harmer·M. Kenyon
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Abstract

We report the serendipitous discovery of a population of low mass, pre-main sequence stars (PMS) in the direction of the Wolf-Rayet/O-star binary system gamma^{2} Vel and the Vela OB2 association. We argue that gamma^{2} Vel and the low mass stars are truly associated, are approximately coeval and that both are at distances between 360-490 pc, disagreeing at the 2 sigma level with the recent Hipparcos parallax of gamma^{2} Vel, but consistent with older distance estimates. Our results clearly have implications for the physical parameters of the gamma^{2} Vel system, but also offer an exciting opportunity to investigate the influence of high mass stars on the mass function and circumstellar disc lifetimes of their lower mass PMS siblings.

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M. Pozzo, R. D. Jeffries, T. Naylor, E. J. Totten, S. Harmer, M. Kenyon. 2000-02-17. The discovery of a low mass, pre-main-sequence stellar association around gamma Velorum. https://doi.org/10.1046/j.1365-8711.2000.03455.x

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