A new pulsating DA white dwarf: PG 2303 + 243

Details A new pulsating DA white dwarf: PG 2303 + 243 A new pulsating DA white dwarf: PG 2303 + 243

Mar 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987a%26a...175l..13v&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 175, no. 1-2, March 1987, p. L13-L15.

Astronomy and Astrophysics

Astrophysics

12

Stellar Spectra, Variable Stars, White Dwarf Stars, Astronomical Photometry, Fourier Analysis, Pulse Amplitude, Stellar Rotation

Scientific paper

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.

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