PHOTOMETRY OF COOL STARS DETECTED IN EXTREME-ULTRAVIOLET (EUV) ALL-SKY SURVEYS

Authors
CUTISPOTO G PALLAVICINI R KURSTER M RODONO M
Citation
G. Cutispoto et al., PHOTOMETRY OF COOL STARS DETECTED IN EXTREME-ULTRAVIOLET (EUV) ALL-SKY SURVEYS, Astronomy and astrophysics, 297(3), 1995, pp. 764-770
Citations number
23
Categorie Soggetti
Astronomy & Astrophysics
Journal title
Astronomy and astrophysics → ACNP
ISSN journal
00046361
Volume
297
Issue
3
Year of publication
1995
Pages
764 - 770
Database
ISI
SICI code
0004-6361(1995)297:3<764:POCSDI>2.0.ZU;2-0
Abstract
We present high-precision UBV(RI)(c) photometry for a small sample of cool stars detected at EUV wavelengths by the ROSAT WFC and/or the EUV E all-sky survey. Four out of the five stars observed are variable and one of them is an eclipsing binary. Amplitudes up to 0.38 magnitudes in the V band have been observed and clear colour variations have been found. We have computed the photometric periods and deduced approxima te spectral classifications and distances.