2000/09/29 by Anthony Brown, Brown, Anthony
Physics and Astronomy · #Astrophysics (astro-ph) #FOS: Physical sciences #astro-ph
paper · pdf · doi:10.48550/arxiv.astro-ph/0009489
4 pages; to appear in proceedings of IAU GA-XXIV Joint Discussion 13: Hipparcos and the Luminosity Calibration of the Nearer Stars
arxiv created 2000/09/29 · arxiv updated 2009/12/01
In the context of the luminosity calibration of the nearer stars I discuss the Hipparcos results on distances to nearby OB associations and open clusters. The shortcomings and assumptions in the analyses used to derive these results are pointed out and for the open clusters a comparison is made with results obtained from main sequence fitting. I conclude that given the considerable uncertainties in the latter technique there is no convincing evidence that the Hipparcos based distances to open clusters beyond the Hyades should not be trusted.