Fast-rotating nearby solar-type stars
Open Access
- 15 March 2002
- journal article
- research article
- Published by EDP Sciences in Astronomy & Astrophysics
- Vol. 384 (2) , 491-503
- https://doi.org/10.1051/0004-6361:20020040
Abstract
We present the results of high-resolution spectroscopic and high-precision photometric observations on a sample of 129 late-F and G-type nearby stars selected on the basis of their large rotational velocity. Using also data from the Hipparcos satellite, CORAVEL and from the ROSAT satellite database, we infer spectral types, compute radial velocities, v sin i, Li abundances and X-ray luminosities and investigate the single or binary nature of the sample stars. Such a careful analysis of our sample shows a large fraction of binaries (62%) and of young single disk stars. In particular, at least 9 stars can be considered bona-fide PMS or ZAMS objects, and 30 stars are identified as SBs for the first time. Information on the presence of Ca II K emission and on optical variability is given for some of the stars of the sample.Keywords
This publication has 44 references indexed in Scilit:
- X-ray source populations in the region of the open clusters NGC 6633 and IC 4756Monthly Notices of the Royal Astronomical Society, 2002
- Fast-rotating nearby solar-type starsAstronomy & Astrophysics, 2002
- Doppler images from dual-site observations of southern rapidly rotating stars -- I. Differential rotation on PZ TelMonthly Notices of the Royal Astronomical Society, 2000
- CCD photometry and astrometry of visual double and multiple stars of the HIPPARCOS CatalogueAstronomy and Astrophysics Supplement Series, 1999
- Classification of EUV stellar sources detected by the ROSAT WFCAstronomy and Astrophysics Supplement Series, 1999
- Long-term monitoring of active starsAstronomy and Astrophysics Supplement Series, 1998
- Extremely metal-deficient red giants. I - A new objective-prism, photometric, and radial-velocity surveyThe Astrophysical Journal Supplement Series, 1980
- Southern metal-poor stars - UBVRI photometryThe Astronomical Journal, 1980
- Coravel— A new tool for radial velocity measurementsVistas in Astronomy, 1979
- On the Integral Equation Governing the Distribution of the True and the Apparent Rotational Velocities of Stars.The Astrophysical Journal, 1950