2006AJ....132..831G


Query : 2006AJ....132..831G

2006AJ....132..831G - Astron. J., 132, 831-835 (2006/August-0)

Mapping the ZZ Ceti instability strip: discovery of six new pulsators.

GIANNINAS A., BERGERON P. and FONTAINE G.

Abstract (from CDS):

As part of an ongoing program to better map the empirical instability strip of pulsating ZZ Ceti white dwarfs, we present a brief progress report based on our last observing season. We discuss here high-speed photometric measurements for six new pulsators. These stars were selected on the basis of preliminary measurements of their effective temperatures and surface gravities, which placed them inside or near the known ZZ Ceti instability strip. We also report detection limits for a number of DA white dwarfs that showed no sign of variability. Finally, we revisit the ZZ Ceti star G232-38, for which we obtained improved high-speed photometry.

Abstract Copyright: ∼

Journal keyword(s): Stars: Oscillations - Stars: White Dwarfs

Simbad objects: 18

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Number of rows : 18
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026
#notes
1 MCT 0016-2553 WD* 00 18 44.4871263288 -25 36 42.604715808   16.4 16.07 16.08   DA4.5 29 0
2 EGGR 167 WD* 00 39 03.7119472872 +31 31 36.702435000   15.20 16.20 16.0   DA4.0 27 0
3 GD 420 WD* 01 41 21.6192956088 +77 09 00.728192232   14.91   15.0   DA3.0 52 1
4 GALEX J014754.8+233942 WD* 01 47 54.8179400496 +23 39 43.599226356   14.126 14.014 14.133   DA3.9 50 1
5 GD 426 WD* 03 06 16.6927230456 +62 22 22.447534044   15.17 14.95     DA4.5 36 0
6 KUV 03442+0719 WD* 03 46 51.3356330712 +07 28 02.741132460   16.2 16.10 16.4   DA4.5 24 0
7 GD 51 ** 03 50 14.6146092192 -13 35 13.616825568 14.72 15.28 14.96     DA3+dM 27 0
8 GD 429 WD* 04 21 27.8797089792 +70 14 19.366567548   14.85   15.0   DA4.1 35 0
9 LP 366-3 WD* 07 44 45.2814088488 +24 43 11.272462320   16.5 16.52 16.8   DA3.9 20 0
10 EC 11507-1519 WD* 11 53 15.2581290960 -15 36 36.506488428   16.16 16.00 15.9   DA4.0 61 0
11 CBS 54 WD* 12 13 36.4149413616 +31 48 09.161433900   15.8   15.7   DA3.9 23 0
12 Ton 1559 WD* 13 09 57.6766028952 +35 09 47.187935136   15.51   15.2   DA4.4 138 0
13 EC 15036-0918 WD* 15 06 19.4335792920 -09 30 20.890343592   15.29 15.15 15.1   DA3.4 25 0
14 GD 530 WD* 18 20 16.4154966384 +70 53 27.911636088   16   16.9   DA4.4 22 0
15 EGGR 450 WD* 21 49 59.1886559123 +54 08 39.501485233   16.2   16.1   DA4.2 28 0
16 MCT 2148-2910 WD* 21 51 39.8762018760 -28 56 53.087470404   16.03 15.91 16.22   DA4.3 21 0
17 GD 556 WD* 23 14 04.3017921696 +55 28 14.113976340   16       DA3.0 33 0
18 GD 1212 WD* 23 38 50.7400887024 -07 41 19.970752560   13.44 13.26   13.24 DA4.5 64 0

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