Astronomy and Astrophysics – Astrophysics
Scientific paper
Jun 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004ap%26ss.291..449o&link_type=abstract
Astrophysics and Space Science, v. 291, Issue 3, p. 449-456 (2004).
Astronomy and Astrophysics
Astrophysics
Subdwarfs, Early-Type Stars, Oscillations, Subdwarf-B Stars, Pg 1325+101
Scientific paper
In this report we present preliminary results from time-series low-resolution spectroscopy of the pulsating sdB star PG 1325+101 obtained with the Nordic Optical Telescope. We have cross-correlated the spectra and Fourier analysed the resulting radial velocities. From the resulting periodograms we easily recover the known main pulsation period. Further analysis of the spectra, after binning them in phase according to the pulsation period, clearly shows evidence for line-profile variations consistent with a radial pulsation mode. The variations show up in all Balmer lines and several Helium lines sampled by the spectra, and can be understood in terms of temperature, gravity and radial velocity variations. To the best of our knowledge PG 1325+101 is the faintest object in which line-profile variation due to pulsational instability has been detected so far.
Telting John H.
Østensen Roy H.
No associations
LandOfFree
Radial velocity and line-profile variations in the sdBV star PG 1325+101 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 Radial velocity and line-profile variations in the sdBV star PG 1325+101, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Radial velocity and line-profile variations in the sdBV star PG 1325+101 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-890427