SIMBAD references

2002ApJ...580..429M - Astrophys. J., 580, 429-433 (2002/November-3)

A new ZZ Ceti white dwarf pulsator: G30-20.

MUKADAM A.S., KEPLER S.O., WINGET D.E. and BERGERON P.

Abstract (from CDS):

We report the discovery of a new hydrogen atmosphere variable white dwarf (DAV; ZZ Ceti), G30-20, a high-amplitude, long-period pulsator. The Fourier transform of its light curve shows power around 1050-1125 s. We suspect the existence of multiple periodicities in this region, probably corresponding to different radial order (k) modes, but our observations are not long enough to resolve them. This discovery increases the number of known DAVs to 32. Our best fit to its optical spectrum gives Teff=11,070±180K and logg=7.95±0.06. This implies that G30-20 is the coolest known DAV.

Abstract Copyright:

Journal keyword(s): Stars: Individual: Alphanumeric: G30-20 - Stars: Individual: Alphanumeric: WD 2347+128 - Stars: Oscillations - Stars: Variables: Other - Stars: White Dwarfs

Simbad objects: 10

goto Full paper

goto View the reference in ADS

To bookmark this query, right click on this link: simbad:2002ApJ...580..429M and select 'bookmark this link' or equivalent in the popup menu


2021.05.09-19:11:12

© Université de Strasbourg/CNRS

    • Contact