2002ApJ...580..429M


C.D.S. - SIMBAD4 rel 1.7 - 2021.06.22CEST10:16:53

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

Number of rows : 10

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 V* VY Hor WD* 03 43 29.0337379468 -45 49 04.233992041   15.16 14.91 15.28   DA4.3 58 0
2 HL Tau 76 WD* 04 18 56.6380318051 +27 17 48.312463115   15.40       DA4.3 132 0
3 EGGR 34 WD* 04 20 17.2474215789 +36 16 27.266461718   15.79   15.5   DA4.4 65 0
4 GD 66 WD* 05 20 38.3165475543 +30 48 23.923341864   15.78 15.56     DA4.1 69 1
5 Ton 1559 WD* 13 09 57.6765586750 +35 09 47.189084620   15.51   15.2   DA4.4 124 0
6 V* DU Dra WD* 13 52 11.0033581771 +65 24 57.125938501   15.7   15.3   DA4.1 64 0
7 GD 165 WD* 14 24 39.1494933037 +09 17 14.161331419   14.46 14.32 14.6 14.91 DA4.1 153 0
8 V* DN Dra WD* 16 48 25.6321433630 +59 03 22.663406299   12.34 12.17 12.44   DA4.0 200 0
9 V* ZZ Psc WD* 23 28 47.6364608228 +05 14 54.234982405   13.17   13.0   DA4.1 448 0
10 EGGR 405 WD* 23 49 53.4642382756 +13 06 12.923130183   15.9   16.3   DA4.4 43 0

    Equat.    Gal    SGal    Ecl

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


2021.06.22-10:16:53

© Université de Strasbourg/CNRS

    • Contact