Volume 406, Number 2, August I 2003
|Page(s)||685 - 689|
|Section||Stellar structure and evolution|
|Published online||17 November 2003|
A fourth component in the young multiple system V 773 Tauri*
Thüringer Landessternwarte Tautenburg, Sternwarte 5, 07778 Tautenburg, Germany
Corresponding author: firstname.lastname@example.org
Accepted: 19 May 2003
I report on a new component in the pre-main sequence multiple system V 773 Tauri. This second visual companion, V 773 Tau C, with a projected separation of ≈ has been detected using speckle interferometry in the near-infrared. Repeated observations from 1996 to 2002 show significant orbital motion and thus confirm the character of the new companion as a gravitationally bound star. Together with the two components of the spectroscopic binary V 773 Tau A and the previously known visual companion V 773 Tau B, the V 773 Tau system appears as a young “mini-cluster” of four T Tauri stars within a sphere of a radius less than 100 AU. V 773 Tau A, B and C form a triple system that is not hierarchic, but is apparently stable despite of this. The brightness of V 773 Tau C has probably increased over the last years, which may explain its non-detection in previous binary surveys.
Key words: stars: binaries: general / stars: individual: V 773 Tau / stars: pre-main sequence / techniques: interferometric
© 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.