SPEEDY MIC - A VERY YOUNG, RAPIDLY ROTATING K-STAR

Authors
ANDERS GJ JEFFRIES RD KELLETT BJ COATES DW
Citation
Gj. Anders et al., SPEEDY MIC - A VERY YOUNG, RAPIDLY ROTATING K-STAR, Monthly Notices of the Royal Astronomical Society, 265(4), 1993, pp. 941-945
Citations number
21
Categorie Soggetti
Astronomy & Astrophysics
Journal title
Monthly Notices of the Royal Astronomical Society → ACNP
ISSN journal
00358711
Volume
265
Issue
4
Year of publication
1993
Pages
941 - 945
Database
ISI
SICI code
0035-8711(1993)265:4<941:SM-AVY>2.0.ZU;2-4
Abstract
The active K-type object HD 197890 detected in the ROSAT all-sky surve y appears to be one of the most rapidly rotating stars of its type yet found, with a v sin i value of 170 +/- 20 km s(-1). Preliminary photo metric measurements and spectral synthesis of the Li 6707-Angstrom spe ctral region suggest a pre-main-sequence evolutionary status, although the derived spectral type of approximately K5 is uncertain at this st age, and further observations are planned.