Time-resolved spectroscopy of the sdBV V338 Serpentis
We obtained 1955 high-resolution spectra of the high-amplitude pulsating subdwarf B star V338 Ser with the FIES spectrograph at the 2. 5 m Nordic Optical Telescope covering 4 full nights in May-June 2009. Here we present the first results from phase-folding the data on the main pulsation mode, as revealed by simultaneous B-band photometry obtained with the Mercator 1. 25 m and Baker 0. 4 m telescopes. We compare the results with a sample line-profile model produced with LTE atmospheres and bruce+kylie.
Physics, Astronomy, and Materials Science
Line-profile variations, Pulsators, Subdwarfs
Østensen, R. H., J. H. Telting, R. Oreiro, U. Heber, Elvire De Beck, and M. Reed. "Time-resolved spectroscopy of the sdBV V338 Serpentis." Astrophysics and Space Science 329, no. 1 (2010): 167-174.
Astrophysics and Space Science