Title of article
Multisite observations of the PMS (delta) Scuti star V351 Ori
Author/Authors
Bernabei، S. نويسنده , , Monteiro، M. J. P. F. G. نويسنده , , Ferro، A. Arellano نويسنده , , Palla، F. نويسنده , , Ripepi، V. نويسنده , , Marconi، M. نويسنده , , Pinheiro، F. J. G. نويسنده , , Folha، D. F. M. نويسنده , , Oswalt، T. D. نويسنده , , Terranegra، L. نويسنده , , Jiang، X. J. نويسنده , , Alcala، J. M. نويسنده , , Marinoni، S. نويسنده , , Rudkin، M. نويسنده , , Johnston، K. نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2003
Pages
-1046
From page
1047
To page
0
Abstract
We present the results of multisite observations spanning two years on the pre-main-sequence (PMS) star V351 Ori. A total of around 180 hours of observations over 29 nights have been collected, allowing us to measure five different periodicities, most likely related to the (delta) Scuti variability of V351 Ori. Comparison with the predictions of linear nonadiabatic radial pulsation models put stringent constraints on the stellar parameters and indicate that the distance to V351 Ori is intermediate between the lower limit measured by Hipparcos (210 pc) and that of the Orion Nebula (450 pc). However, radial pulsation models are unable to reproduce all of the observed frequencies with a single choice of ( M*, L*, and Teff), suggesting the presence of additional nonradial modes.
Keywords
stars: variables: (delta) Scuti , stars: fundamental parameters , stars: oscillations , stars: pre-main sequence , stars: individual: V351 Ori
Journal title
Astronomy and Astrophysics
Serial Year
2003
Journal title
Astronomy and Astrophysics
Record number
77193
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