Astronomy and Astrophysics – Astrophysics – Solar and Stellar Astrophysics
Scientific paper
2009-01-28
Astronomy and Astrophysics
Astrophysics
Solar and Stellar Astrophysics
2 pages, JENAM 2008 proceedings, to be published in 'Communications in Asteroseismology', 159
Scientific paper
Pulsating subdwarf B (sdB) stars oscillate in short-period p-modes or long-period g-modes. HS0702+6043 (DW Lyn) is one of a few objects to show characteristics of both types and is hence classified as hybrid pulsator. It is one of our targets in the EXOTIME program to search for planetary companions around extreme horizontal branch objects. In addition to the standard exercise in asteroseismology to probe the instantaneous inner structure of a star, measured changes in the pulsation frequencies as derived from an O-C diagram can be compared to theoretical evolutionary timescales. Based on the photometric data available so far, we are able to derive a high-resolution frequency spectrum and to report on our efforts to construct a multi-season O-C diagram. Additionally, we have gathered time-resolved spectroscopic data in order to constrain stellar parameters and to derive mode parameters as well as radial and rotational velocities.
Dreizler Stefan
Kruspe R.
Lutz Ronny
Schuh Sonja
Silvotti Roberto
No associations
LandOfFree
Long-term EXOTIME photometry and follow-up spectroscopy of the sdB pulsator HS 0702+6043 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 EXOTIME photometry and follow-up spectroscopy of the sdB pulsator HS 0702+6043, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Long-term EXOTIME photometry and follow-up spectroscopy of the sdB pulsator HS 0702+6043 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-345226