A new pulsating DA white dwarf : PG 2303+243.
Abstract
The authors report the discovery of a new ZZ Ceti variable star. PG 2303+243 is a DA white dwarf from the Palomar-Green catalog, selected from its (G-R) color. The star has been found to vary with a main period of 794.5s and an amplitude as large as 5% of the mean stellar intensity. As many as 12 significant peaks are identified in the Fourier spectrum. The star fit the amplitude-period correlation known for the majority of the ZZ Ceti stars. This discovery raises to 20 the number of the ZZ Ceti variables presently known.
- Publication:
-
Astronomy and Astrophysics
- Pub Date:
- March 1987
- Bibcode:
- 1987A&A...175L..13V
- Keywords:
-
- Stellar Spectra;
- Variable Stars;
- White Dwarf Stars;
- Astronomical Photometry;
- Fourier Analysis;
- Pulse Amplitude;
- Stellar Rotation;
- Astrophysics