Volume 440, Number 3, September IV 2005
|Page(s)||1127 - 1132|
|Section||Stellar structure and evolution|
|Published online||05 September 2005|
What are the temperatures of T Tauri stars?
Constraints from coeval formation of young eclipsing binaries
AIU Jena, Schillergäßchen 2-3, 07745 Jena, Germany e-mail: firstname.lastname@example.org
2 Sterrewacht Leiden/ Leiden Observatory, Niels Bohrweg 2, 2333 CA Leiden, The Netherlands
Accepted: 24 June 2005
We show how the assumption of coeval formation can be used to constrain the effective temperatures of the components of young eclipsing double-lined spectroscopic binaries. Our method extends the approach of White et al. (1999) to a two-step analysis. The first step compares evolutionary models to the observed masses and radii and selects those models that predict ages that are consistent with coeval formation. The second step then uses these models to constrain the effective temperatures. We applied the method to literature values of the stellar parameters of the eclipsing binaries RX J0529.4+0041 A and V1174 Ori and confirm that V1174 Ori A has dwarf-like temperatures at an age of 9 Myrs, while we cannot draw any conclusions for RX J0529.4+0041 A and V1174 Ori B. Considering these binaries, we find that none of the evolutionary models gives coeval solutions simultaneously in mass, radius and effective temperature.
Key words: stars: fundamental parameters / stars: atmospheres / Hertzsprung-Russell (HR) and C-M diagrams / stars: pre-main sequence / stars: late-type
© ESO, 2005
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.