Hipparcos parallaxes of O stars (Schroeder+, 2004)

Details Hipparcos parallaxes of O stars (Schroeder+, 2004) Hipparcos parallaxes of O stars (Schroeder+, 2004)

Sep 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005ycat..34280149s&link_type=abstract

VizieR On-line Data Catalog: J/A+A/428/149. Originally published in: 2004A&A...428..149S

Computer Science

Stars: O, Parallaxes: Trigonometric, Magnitudes: Absolute, Mk Spectral Classification

Scientific paper

We compare the absolute visual magnitude of the majority of bright O stars in the sky as predicted from their spectral type with the absolute magnitude calculated from their apparent magnitude and the Hipparcos parallax. We find that many stars appear to be much fainter than expected, up to five magnitudes.
We find no evidence for a correlation between magnitude differences and the stellar rotational velocity as suggested for OB stars by Lamers et al. (1997A&A...325L..25L), whose small sample of stars is partly included in ours.
(3 data files).

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