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Recalibration of the uvbyβ photometry-based distance scale of OB-type stars using the revised Hipparcos parallaxes
Published online by Cambridge University Press: 26 February 2013
Abstract
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The absolute visual and infrared magnitudes of moderately evolved OB-type stars are directly calibrated as a function of Stroemgren four-color and Hβ photometric indices using the trigonometric parallaxes from the new reduction of Hipparcos data. The resulting calibrations have an average accuracy of ~ 0.4 mag and, when applied to members of young open clusters, yield distances that are fairly consistent with those determined using the MV–(B − V) zero-age main-sequence fitting procedure.
- Type
- Contributed Papers
- Information
- Proceedings of the International Astronomical Union , Volume 8 , Symposium S289: Advancing the Physics of Cosmic Distances , August 2012 , pp. 382 - 385
- Copyright
- Copyright © International Astronomical Union 2013
References
Cutri, R. M., Skrutskie, M. F., & van Dyk, S., et al. 2003, 2MASS All-Sky Catalog of Point Sources (CDS catalog II/246)Google Scholar
Zacharias, N., Finch, C. T., Girard, T. M., Henden, A., Bartlett, J. L., Monet, D. G., & Zacharias, M. I. 2012, The fourth U.S. Naval Observatory CCD Astrograph Catalog (UCAC4) (CDS catalog I/322)CrossRefGoogle Scholar
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