Long-term photometric monitoring with the Mercator telescope. Frequencies and multicolour amplitudes of $γ$ Doradus stars

Details Long-term photometric monitoring with the Mercator telescope. Frequencies and multicolour amplitudes of $γ$ Doradus stars Long-term photometric monitoring with the Mercator telescope. Frequencies and multicolour amplitudes of $γ$ Doradus stars

2009-03-30

arxiv.org/abs/0903.5213v1

Astronomy and Astrophysics

Astrophysics

Galaxy Astrophysics

Electronic tables (5 to 25) not included in this version

Scientific paper

Gamma Doradus stars are excellent targets for asteroseismology since the gravity modes present in these stars probe the deep stellar interiors. Mode identification will improve the knowledge of these stars considerably. A selected group of Gamma Doradus stars and some candidates were observed with the Mercator telescope to find and/or confirm the periodicities in the light variations and to derive reliable amplitude ratios in different pass bands. A frequency analysis was performed on all new data obtained in the Geneva photometric system. In order to have more reliable and accurate frequencies, the new data were combined with similar data from the literature and with Hipparcos observations. A set of frequencies that minimized the the residuals in a harmonic fit was searched for while allowing means and amplitudes to vary from one observation set to another. Frequencies and amplitudes in the photometric passbands of the Geneva system are given for 21 Gamma Doradus stars. We report the discovery of HD 74504 as a newly found Gamma Doradus star. Our study provides the first extensive multicolour database for the understanding of gravity modes in F-type stars.

Affiliated with

Also associated with

No associations

Rating

Long-term photometric monitoring with the Mercator telescope. Frequencies and multicolour amplitudes of $γ$ Doradus stars 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 Long-term photometric monitoring with the Mercator telescope. Frequencies and multicolour amplitudes of $γ$ Doradus stars, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Long-term photometric monitoring with the Mercator telescope. Frequencies and multicolour amplitudes of $γ$ Doradus stars will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-425058