Photometric and spectroscopic observations of the spotted T Tauri star V410 Tauri.

Details Photometric and spectroscopic observations of the spotted T Tauri star V410 Tauri. Photometric and spectroscopic observations of the spotted T Tauri star V410 Tauri.

Oct 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994a%26as..107....9p&link_type=abstract

Astronomy and Astrophysics Suppl. 107, 9-22 (1994)

Astronomy and Astrophysics

Astrophysics

38

Stars: Pre Main-Sequence, Stars: Individual V410 Tau, Stars: Imaging

Scientific paper

V410 Tau is a fast rotating weak line T Tau star with a large cool spot or spotted area on its surface, which has been observed through the periodic (P=1.872d) light variations during several years. We present here UBVR photometric monitoring data for the star for 7 years since 1986 to 1992. The data permit us to derive the spot parameters and search for their annual variations. In 1992/93 the photometric monitoring was carried out along with low resolution high signal-to-noise spectroscopy of V410 Tau in the spectral region of the TiO bands near λ7100, Li Iλ6707 and Hα. We found a relationship between the TiO bands strength and stellar brightness in favor of the cool spot hypothesis. Parameters of the spotted region were derived, and an integrated spectrum of the spotted star was calculated using synthetic spectra of stellar atmospheres. The Hα emission was found to vary in a more complex way, with two flux maxima at the phases of axial rotation when the spot is near the stellar limb. High resolution Hα profiles were obtained for all phases of the rotational period.

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