1998BaltA...7..131G

Query : 1998BaltA...7..131G

1998BaltA...7..131G - Baltic Astronomy, 7, 131-140 (1998/March-0)

Blue edge of the ZZ Ceti instability strip versus mass.

GIOVANNINI O., KEPLER S.O., KANAAN A., WOOD M.A., CLAVER C.F. and KOESTER D.

Abstract (from CDS):

In this work we test the theoretical results derived from pulsation models in which the blue edge temperature of the ZZ Ceti instability strip depends on the stellar mass. By using the fundamental parameters (Teff and M) and the results of the time series photometry of a sample of DA stars, we found all the ZZ Ceti stars in our sample but one (G 226-29) fall inside the instability strip if the theoretical blue edge is shifted by 300 K to higher temperature. Our biggest sources of uncertainty are in the Teff and M determinations, but by assuming that the relative ordering in the temperature among the ZZ Ceti stars is reliable, we conclude that the instability strip boundaries depend on stellar mass.

Abstract Copyright: ∼

Journal keyword(s): stars: white dwarfs, fundamental parameters, variables

Simbad objects: 66

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Number of rows : 66
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 LAWD 5 WD* 00 35 35.8382124422 +01 53 08.626899670   15.76 15.52 15.6   DA4.6 69 0
2 EGGR 561 WD* 00 40 22.8841464072 -00 21 30.064811976   15.29 15.1     DA3.2 44 0
3 L 292-41 WD* 01 06 53.7114590688 -46 08 53.673765720   15.59 15.39 15.66   DA4.4 63 0
4 V* ZZ Cet WD* 01 36 13.6153974672 -11 20 32.632874601   14.328 14.16 14.4   DA4.0 307 0
5 EGGR 311 WD* 01 54 13.8872990407 +02 01 24.138596508   15.16   14.4   DA3.9 50 0
6 LAWD 13 WD* 02 56 17.2209885870 -70 22 10.848492817 13.72 14.25 14.07 14.03 14.00 DA4.7 63 1
7 EGGR 567 WD* 03 43 06.8602581744 +52 28 55.574464044   15.79 15.64 15.76   DA3.8 33 0
8 V* VY Hor WD* 03 43 29.0336408736 -45 49 04.233811368   15.16 14.91 15.28   DA4.3 69 0
9 G 8-8 WD* 04 04 34.1281892448 +25 08 51.685256904   13.92   14.1   DA3.9 94 0
10 GD 77 WD* 06 41 12.8216879232 +47 44 19.650545124   14.93   14.9   DAP3.4 62 0
11 V* RY LMi WD* 09 24 15.2482279632 +35 16 51.401570556   15.72   15.99   DA4 274 0
12 G 161-36 WD* 09 29 21.2880206880 -04 10 05.699373096   14.94 14.79 15.34   DA3.6 33 0
13 Ton 20 WD* 09 41 04.4668994424 +28 22 24.159587592   15.62 15.57     DA3.3 41 0
14 LAWD 32 WD* 09 46 39.0735844152 +43 54 52.233579756   13.39   13.8   DA3.8 109 0
15 WG 14 WD* 09 51 39.2007557136 -57 26 38.574824064   15.14 14.94     DA3.9 36 0
16 PG 1022+050 WD* 10 24 59.8281525960 +04 46 10.445657952   14.37 14.20 14.2   DA3.5 60 0
17 PG 1026+024 WD* 10 29 09.8055416376 +02 05 53.669558472   14.34 14.20 14.46   DA3.8 45 0
18 Ton 1323 WD* 11 04 32.5723321080 +36 10 48.873021996   14.76 14.49     DA3.7 75 0
19 GD 133 WD* 11 19 12.3988618680 +02 20 33.045927216   14.734 14.617 14.855   DA4.0 107 0
20 PG 1129+072 WD* 11 32 03.4693633704 +06 55 09.163435008   15.37       DA3.6 33 0
21 LAWD 38 WD* 11 50 20.1723452944 +25 18 32.765299925   15.78   15.4   DA5 66 0
22 WG 22 WD* 12 38 49.7811220835 -49 48 00.219515411   14.14 13.96     DA4.2 245 0
23 EGGR 92 WD* 12 47 14.7133704150 +14 42 30.875986658   16.08   15.9   DA4.6 66 0
24 GD 320 WD* 12 55 26.3443601232 +47 57 19.255035456   16.5       DA3.4 31 0
25 BD-07 3632 WD* 13 30 13.6370112733 -08 34 29.468140653 11.803 12.398 12.340 12.39 12.436 DA3.5 203 0
26 BD+34 2473B WD* 13 57 09.6172493496 +33 48 02.455483104   16.46   16.15   DA3.5 50 0
27 PG 1418-005 WD* 14 21 31.2056919360 -00 44 23.147549556   16.64 16.7     DA3.4 26 0
28 V* MY Aps WD* 14 33 07.6366196272 -81 20 14.128475593   13.49 13.35 13.65   DA4.1 152 0
29 LAWD 56 WD* 14 50 49.3755085557 +07 33 33.866961226   15.50   15.4   DA3.4 69 0
30 GD 176 WD* 15 10 29.0412183168 -10 45 19.415579328   15.65 15.42 15.2   DA4.9 39 0
31 GD 189 WD* 15 42 14.2129199328 -03 41 31.297062912   15.45 15.20 15.0   DA5.0 40 0
32 HD 140901B WD* 15 47 30.0209908033 -37 55 08.460010675   13.10 12.80 13.53 12.34 DA4.8 108 0
33 GD 194 WD* 15 52 26.3787120096 +18 10 18.689282184   14.94   15.2   DA3.4 58 0
34 EGGR 174 WD* 15 58 04.8190081920 -09 08 07.936829448   14.89 14.80 14.3 14.98 DA3.4 49 0
35 Ross 808 WD* 16 01 23.1868739817 +36 48 34.288643534   14.53   14.7   DA4.4 117 0
36 EGGR 116 WD* 16 08 22.1889820968 +42 05 43.435887864   13.91   13.7   DA3.8 54 0
37 GD 196 WD* 16 13 02.2929380160 +16 31 55.184791656   15.86   15.7   DA3.3 47 0
38 L 202-179 WD* 16 20 34.6137125184 -59 16 17.819262120   15.03 14.93 15.22   DA3.8 21 0
39 GD 202 WD* 16 38 40.4041104552 +15 54 16.664862204   15.74 15.60     DA3.8 31 0
40 EGGR 120 WD* 16 39 27.8215382615 +33 25 22.241246085   14.83   14.6   DA4.9 74 0
41 V* DN Dra WD* 16 48 25.6318375106 +59 03 22.658985521   12.34 12.17 12.44   DA4.0 228 0
42 GD 515 WD* 16 54 29.0577769752 +63 39 21.175780860   15.5   15.9   DA3.2 42 0
43 Wolf 672 A WD* 17 18 35.1636500684 +01 56 53.203775107       14.63   DA3.7 93 0
44 BPM 24754 WD* 17 19 01.0244255304 -54 46 16.960940940       15.81 15.48 DA4.5 36 1
45 EGGR 177 WD* 18 30 39.4327226184 -10 36 59.931584028   15.41 15.28 15.82   DA3.6 42 0
46 EGGR 200 WD* 18 42 57.7479820102 -11 08 53.183098481       14.46 14.01 DA4.9 45 0
47 EGGR 128 WD* 18 59 49.2015115920 +11 58 40.273201272   15.72   15.3   DA5.0 41 0
48 G 142-B2B WD* 19 13 38.6751658464 +13 36 27.362642868 13.52     14.47   DA3.6 59 0
49 GD 219 WD* 19 21 40.4179321464 +14 40 41.404467612   13.07 13.01 13.3   DA3.3 92 0
50 V* PT Vul WD* 19 52 27.8765406336 +25 09 29.175649632   15.13   15.1   DA4.2 74 0
51 EGGR 261 WD* 20 49 06.6996392736 +37 28 14.050387020   13.40   13.2   DA3.4 88 0
52 LAWD 83 WD* 21 13 16.8549349741 -81 49 12.878285501 13.28 13.82 13.59 13.6   DA4.8 125 0
53 G 263-3 WD* 21 26 57.6561357825 +73 38 44.668257289 12.15 12.80 12.83 13.30   DA3.1 118 0
54 EGGR 582 WD* 21 38 46.1923801224 +23 09 21.491234532   15.39   14.6   DA4.9 58 0
55 GD 397 WD* 21 52 02.8924125888 +37 26 19.116293532   15.34 15.04 15.57   DA3.7 34 0
56 EGGR 155 WD* 22 49 05.5507896558 +22 36 31.991540832   14.55   13.8   DA4.7 111 0
57 EGGR 263 WD* 23 01 05.5060433304 +40 56 13.945397064   15.5       DA5.0 36 1
58 WD 2302-773 WD* 23 05 44.9 -77 01 48           DA3.7 3 0
59 PG 2303+243 WD* 23 06 17.6909597616 +24 32 07.677555468   15.4   15.2   DA4.3 60 0
60 PG 2306+131 WD* 23 08 30.5124382728 +13 19 23.362418568   15.38 15.1 15.3   DA3.7 38 0
61 GD 556 WD* 23 14 04.3017921696 +55 28 14.113976340   16       DA3.0 33 0
62 PG 2322+207 WD* 23 24 35.1949156152 +20 56 33.828403236   15.55 15.47 15.82   DA3.7 33 0
63 V* ZZ Psc WD* 23 28 47.6365087803 +05 14 54.235051503   13.217   13.106   DA4.1 536 0
64 WG 54 WD* 23 40 35.4695752968 -75 45 08.729850528   14.75 14.77 15.16   DA3.5 28 0
65 LAWD 93 WD* 23 43 50.7212145360 +32 32 46.728318300   13.06 12.94 13.12   DA3.8 160 0
66 V* HW Aqr WD* 23 51 22.0904044560 -24 08 17.326740768   15.52   15.1   DA4.2 48 0

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