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Issue A&A
Volume 367, Number 1, February III 2001
Page(s) 297 - 298
Section Stellar atmospheres
DOI http://dx.doi.org/10.1051/0004-6361:20000567



A&A 367, 297-298 (2001)
DOI: 10.1051/0004-6361:20000567

Research Note
Hipparcos photometry: The least variable stars

S. J. Adelman

Department of Physics, The Citadel, 171 Moultrie Street, Charleston, SC 29409, USA

(Received 8 August 2000 / Accepted 19 December 2000)

Abstract
The data known as the Hipparcos Photometry obtained with the Hipparcos satellite have been investigated to find those stars which are least variable. Such stars are excellent candidates to serve as standards for photometric systems. Their spectral types suggest in which parts of the HR diagrams stars are most constant. In some cases these values strongly indicate that previous ground based studies claiming photometric variability are incorrect or that the level of stellar activity has changed.


Key words: stars: activity -- stars: general -- stars: statistics -- techniques: photometric

Offprint request: S. J. Adelman, adelmans@citadel.edu

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© ESO 2001


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