Long-term EXOTIME photometry and follow-up spectroscopy of the sdB pulsator HS 0702+6043

Astronomy and Astrophysics – Astrophysics – Solar and Stellar Astrophysics

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

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.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

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.

Rate now

     

Profile ID: LFWR-SCP-O-345226

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.