Volume 451, Number 3, June I 2006
|Page(s)||1041 - 1044|
|Section||Stellar structure and evolution|
|Published online||04 May 2006|
Near-infrared observations of the carbon stars TU Geminorum and SS Virginis at milliarcsecond resolution
European Southern Observatory, Karl-Schwarzschildstr. 2, 85748 Garching bei München, Germany e-mail: email@example.com
2 Physical Research Laboratory, Navrangpura, 380009 Ahmedabad, India e-mail: firstname.lastname@example.org
Accepted: 5 February 2006
Aims.High-angular resolution investigations of carbon stars.
Results. Although a companion to TU Gem is known from the Tycho catalogue, we were not able to detect it so we place limits on its K-band brightness. For both stars, we determined accurate values of the angular diameters at the phase of the observation, namely mas and mas for SS Vir and TU Gem. Using distance estimates from the literature, we found that the two stars have radii of about 500 and 250 , respectively. We also computed their effective temperatures.
Key words: occultations / techniques: high angular resolution / stars: fundamental parameters / stars: individual: TU Gem / stars: individual: SS Vir
© ESO, 2006
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