Query : 2010A&A...511A..13I

2010A&A...511A..13I - Astronomy and Astrophysics, volume 511, A13-13 (2010/2-2)

Periodic variability in the emission spectrum of T Tauri.


Abstract (from CDS):

Long timescale periodic variations in T Tauri stars may be related to changes in their protoplanetary disks. A lengthy homogeneous series of spectral observations of the CTTS T TauN has been analyzed. We search for periodicity in the equivalent widths of the emission lines in the optical and in the UV. Significant periodic variation is found in the equivalent widths of Hβ and CaII emission features on a time scale of 33 ±1.5-days. Variations in the UV emission lines based on archival IUE spectra are also consistent with this period. This is clearly not the rotation period of the star, which is known to be 2.8-days, and must arise somewhere in the magnetosphere, disk or outflow region.

Abstract Copyright:

Journal keyword(s): stars: pre-main sequence - stars: variables: general

Simbad objects: 3

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Number of rows : 3
N Identifier Otype ICRS (J2000)
ICRS (J2000)
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2023
1 V* BP Tau Or* 04 19 15.8339827632 +29 06 26.926959492   13.13 12.12 11.89   K5/7Ve 659 0
2 V* T Tau TT* 04 21 59.4319873992 +19 32 06.432393336   11.22 10.12 9.80   K0IV/Ve 1390 1
3 V* RU Lup TT* 15 56 42.3108692112 -37 49 15.473946900 9.27 10.07 9.60     K7/M0e 454 0

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