Doppler images of the pre-main sequence binary V824 Arae

Citation
Ap. Hatzes et M. Kurster, Doppler images of the pre-main sequence binary V824 Arae, ASTRON ASTR, 346(2), 1999, pp. 432-436
Citations number
19
Categorie Soggetti
Space Sciences
Journal title
ASTRONOMY AND ASTROPHYSICS
ISSN journal
00046361 → ACNP
Volume
346
Issue
2
Year of publication
1999
Pages
432 - 436
Database
ISI
SICI code
0004-6361(199906)346:2<432:DIOTPS>2.0.ZU;2-U
Abstract
A time series of spectral observations are used to derive the spot distribu tion on both components of the active late-type binary system V824 Ara. Bot h stars show a spot distribution that is dominated by a polar spot whose ce nter is displaced from the rotation asis of the star. This is similar to th e spot distribution found on other young stars and may provide further supp ort for the hypothesis that V824 Ara is a pre-main sequence binary. The Dop pler images of both components appear to be mirror images of each other and this suggests that tidal fords may influence the spot distribution on thes e stars.