Astronomy and Astrophysics – Astrophysics – Solar and Stellar Astrophysics
Scientific paper
2011-11-08
Astronomische Nachrichten, 331, No9-10, P48 (2010)
Astronomy and Astrophysics
Astrophysics
Solar and Stellar Astrophysics
4 pages, 4 figures, 1 table. Proceedings of the HELAS IV Conference, Lanzarote, February 2010
Scientific paper
We present the preliminary results of a frequency and line-profile analysis of the CoRoT gamma Dor candidate HD171834. The data consist of 149 days of CoRoT light curves and a ground-based dataset of more than 1400 high-resolution spectra, obtained with six different instruments. Low-amplitude frequencies between 0 and 5 c/d, dominated by a frequency near 0.96 c/d and several of its harmonics, are detected. These findings suggest that HD171834 is not a mere gamma Dor pulsator and that stellar activity plays an important role in its variable behaviour. Based on CoRoT space data and on ground-based observations with ESO Telescopes at the La Silla Observatory under the ESO Large Programmes ESO LP 178.D-0361 and ESO LP 182.D-0356 (FEROS/2.2m and HARPS/3.6m), and data collected with FOCES/2.2m at the Centro Astronomico Hispano Aleman at Calar Alto, SOPHIE/1.93m at Observatoire de Haute Provence, FIES/NOT at Observatorio del Roque de los Muchachos, and HERCULES/1.0m at Mount John University Observatory.
Amado Pedro
Auvergne Michel
Baglin Annie
Baudin Francois
Catala Claude
No associations
LandOfFree
The variability of the CoRoT target HD171834: gamma Dor pulsations and/or activity? does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The variability of the CoRoT target HD171834: gamma Dor pulsations and/or activity?, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The variability of the CoRoT target HD171834: gamma Dor pulsations and/or activity? will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-53292