DOPPLER IMAGING OF THE COOL SPOT DISTRIBUTION ON THE WEAK T-TAURI STAR V410 TAURI

Authors
Citation
Ap. Hatzes, DOPPLER IMAGING OF THE COOL SPOT DISTRIBUTION ON THE WEAK T-TAURI STAR V410 TAURI, The Astrophysical journal, 451(2), 1995, pp. 784-794
Citations number
35
Categorie Soggetti
Astronomy & Astrophysics
Journal title
ISSN journal
0004637X
Volume
451
Issue
2
Year of publication
1995
Part
1
Pages
784 - 794
Database
ISI
SICI code
0004-637X(1995)451:2<784:DIOTCS>2.0.ZU;2-B
Abstract
A Doppler image of the spot distribution of the ''naked'' T Tauri star V410 Tau in epoch 1994.0 is presented. This image was derived using s ix photospheric absorption lines, and it shows a spot distribution dom inated by a high-latitude spot whose center is offset from the rotatio n pole of the star and several midlatitude spots. V410 Tau may have a spot morphology similar to that seen in two other young stars (V824 Ar a and HDE 283572), but slightly different to that seen in RS CVn stars , which tend to have a polar spot centered on the rotation pole. H alp ha which appears consistently as emission in this star, shows dramatic variations in its equivalent width (by a factor of 4) and in its shap e. Maximum Ha emission as well as very strong He I D-3 emission is see n at the phase when the high-latitude spot transits the disk, which in dicates that chromospheric activity such as plage and flares may be as sociated with this spot feature.