Volume 401, Number 3, April III 2003
|Page(s)||1057 - 1061|
|Section||Stellar structure and evolution|
|Published online||01 April 2003|
Possible detection of a magnetic field in T Tauri
Sternberg Astronomical Institute, Moscow V-234 119992, Russia
2 Isaak Newton Institute of Chile Branch in Moscow, Russia
3 Special Astrophysical Observatory, Nizhnij Arkhyz 357147, Russia
Corresponding author: D. Smirnov, firstname.lastname@example.org
Accepted: 6 January 2003
Medium-resolution circular spectropolarimetry of T Tauri is presented. The star was observed twice: on November 11, 1996 and January 22, 2002. Weak circular polarization was found in photospheric absorption lines, indicating a mean surface longitudinal magnetic field of G and G at the epoch of the first and second observations respectively. While these values are near the detection limit of our apparatus, we belive that they are real. One can conclude from our data that of T Tau does not significantly exceed 200 G, which is much less than surface magnetic field strength of the star (>2.3 kG) found by Guenther et al. (1999) and Johns-Krull et al. (2000). We discuss possible reasons for this difference.
Key words: stars: pre-main sequence / stars: magnetic fields / stars: individual: T Tau
© ESO, 2003
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.