EDP Sciences
Free access
Volume 408, Number 3, September IV 2003
Page(s) L29 - L32
Section Letters
DOI http://dx.doi.org/10.1051/0004-6361:20030997

A&A 408, L29-L32 (2003)
DOI: 10.1051/0004-6361:20030997


HD 34700: A new T Tauri double-lined spectroscopic binary

A. Arellano Ferro1 and Sunetra Giridhar2

1  Instituto de Astronomía, Universidad Nacional Autónoma de México, Apdo. Postal 70-264, México, DF, CP 04510, México
2  Indian Institute of Astrophysics, Bangalore 560034, India
    e-mail: giridhar@iiap.ernet.in

(Received 14 May 2003 / Accepted 29 June 2003)

We find the star HD 34700 to be a double-lined spectroscopic binary. We also identify it as a weak-line T Tauri object. The spectra of both components are very similar and both show the Li I feature at 6708 Å. Strong arguments in favour of the binary nature of the star as opposed to other possibilities are offered. It is very likely that the companion is also a T Tauri star of similar mass. A projected rotational velocity, $v\sin i$, of 25 and 23 km s -1 has been estimated for the blue and red components. We present a list of the lines identified and the radial velocities of the two components on three spectra obtained on consecutive nights.

Key words: spectroscopic binaries -- T Tauri stars

Offprint request: A. Arellano Ferro, armando@astroscu.unam.mx

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