Issue |
Astron. Astrophys. Suppl. Ser.
Volume 120, Number 2, December I 1996
|
|
---|---|---|
Page(s) | 267 - 274 | |
DOI | https://doi.org/10.1051/aas:1996291 | |
Published online | 15 December 1996 |
Detection of periods for T Tauri stars*
1
MPG Research Unit “Staub in Sternentstehungsgebieten”, Schillergäßchen 2-3, 07745 Jena, Germany. e-mail: osterloh@sol.astro.uni-jena.de
2
MPIA Heidelberg, Königstuhl 17, 69117 Heidelberg, Germany
Send offprint request to: M. Osterloh
Received:
11
August
1995
Accepted:
23
March
1996
We present the results of monitoring
of a sample of T Tauri stars. The method of differential CCD photometry
was applied. The observations span a range of ten days and show that
eleven out of twelve sources varied during this time interval. These variations
are correlated in all bands. Periods were detected
(confidence level 99.99%) for eight out of eleven variable stars; one
additional period was found at the 99.9% confidence level.
Of those, one (BP Tau) agrees with previously published periods; two, GM Aur and IQ Tau,
do not; six are new detections of periodicities.
The sample is drawn from the Taurus-Auriga and Cepheus IV star-forming
regions.
Key words: stars: evolution / stars: pre main-sequence / stars: rotation
© European Southern Observatory (ESO), 1996