2012MNRAS.420.1462R

Query : 2012MNRAS.420.1462R

2012MNRAS.420.1462R - Mon. Not. R. Astron. Soc., 420, 1462-1480 (2012/February-3)

Toward ensemble asteroseismology of ZZ Ceti stars with fully evolutionary models.

ROMERO A.D., CORSICO A.H., ALTHAUS L.G., KEPLER S.O., CASTANHEIRA B.G. and MILLER BERTOLAMI M.M.

Abstract (from CDS):

ZZ Ceti stars form the most numerous group of degenerate variable stars. They are otherwise normal DA (H-rich atmospheres) white dwarfs that exhibit pulsations. Here, we present an asteroseismological analysis for 44 bright ZZ Ceti stars based on a new set of fully evolutionary DA white dwarf models characterized by detailed chemical profiles from the centre to the surface. One of our targets is the archetypal ZZ Ceti star G117-B15A, for which we obtain an asteroseismological model with an effective temperature and a surface gravity in excellent agreement with the spectroscopy. The asteroseismological analysis of a set of 44 ZZ Ceti stars has the potential to characterize the global properties of the class, in particular the thicknesses of the hydrogen envelope and the stellar masses. Our results support the belief that white dwarfs in the solar neighbourhood harbour a broad range of hydrogen-layer thickness. The importance of the local density in shaping the galaxy stellar mass functions

Abstract Copyright: 2011 The Authors Monthly Notices of the Royal Astronomical Society2011 RAS

Journal keyword(s): astroseismology - stars: evolution - stars: ZZ Ceti stars - stars: interiors - stars: oscillations - white dwarfs

Simbad objects: 44

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Number of rows : 44
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 EGGR 167 WD* 00 39 03.7119472872 +31 31 36.702435000   15.20 16.20 16.0   DA4.0 24 0
2 L 292-41 WD* 01 06 53.7114590688 -46 08 53.673765720   15.59 15.39 15.66   DA4.4 60 0
3 V* ZZ Cet WD* 01 36 13.6153974672 -11 20 32.632874601   14.328 14.16 14.4   DA4.0 291 0
4 GD 1400 WD* 01 47 21.8246176800 -21 56 51.386849088   15.38 15.15 15.42   DA4.1 87 0
5 V* AQ Tri WD* 02 49 27.5745572088 +32 51 12.431334636     15.8     DA4.2 34 0
6 V* VY Hor WD* 03 43 29.0336408736 -45 49 04.233811368   15.16 14.91 15.28   DA4.3 64 0
7 HL Tau 76 WD* 04 18 56.6378191680 +27 17 48.314513652   15.40       DA4.3 141 0
8 EGGR 34 WD* 04 20 17.2470258432 +36 16 27.266860200   15.79   15.5   DA4.4 71 0
9 V* BR Cam WD* 04 59 27.2435598163 +55 25 21.057303220   15.98   16.1   DA4.3 66 0
10 HS 0507+0434B WD* 05 10 13.5215260416 +04 38 55.135549140   15.52 15.31 15.63   DA2.3 65 0
11 GD 66 WD* 05 20 38.3165748936 +30 48 23.922603900   15.78 15.56     DA4.1 75 1
12 KUV 08368+4026 WD* 08 40 07.7135286864 +40 15 03.726378396   15.84 15.64 15.95   DA4.1 36 0
13 V* VW Lyn WD* 09 01 48.6581163552 +36 07 07.757288184   14.92   14.2   DA4.1 80 0
14 V* RY LMi WD* 09 24 15.2482279632 +35 16 51.401570556   15.72   15.99   DA4 268 0
15 V* IZ UMa WD* 11 39 41.4106847280 +42 05 18.429389196     16.56     DA4.1 37 0
16 PG 1149+058 WD* 11 51 54.2067404280 +05 28 39.584467236   15.14   15.07   DA4.4 45 0
17 EC 11507-1519 WD* 11 53 15.2581290960 -15 36 36.506488428   16.16 16.00 15.9   DA4.0 49 0
18 V* BT Cam WD* 12 01 44.5758064464 +80 04 59.697402168   15.9   16.2   DA4.3 47 0
19 PB 4304 WD* 12 52 15.1751982192 +04 10 42.945758436           DA4.1 21 0
20 HE 1258+0123 WD* 13 01 10.5155376720 +01 07 39.926449092   16.5 16.26 16.5   DA4.3 41 0
21 Ton 1559 WD* 13 09 57.6766028952 +35 09 47.187935136   15.51   15.2   DA4.4 132 0
22 PG 1349+552 WD* 13 51 20.2509674304 +54 57 42.595932708   15.51       DA4.1 41 0
23 V* DU Dra WD* 13 52 11.0036780664 +65 24 57.126049128   15.7   15.3   DA4.1 71 0
24 EC 14012-1446 WD* 14 03 57.1692959280 -15 01 10.577565696   15.86 15.67 15.89   DA4.1 56 0
25 GD 165 WD* 14 24 39.1495824408 +09 17 14.160753960   14.46 14.32 14.6 14.91 DA4.1 162 0
26 HE 1429-0343 WD* 14 32 03.2155381824 -03 56 38.028144552   16.1 15.8 16.0   DA4.3 18 0
27 V* MY Aps WD* 14 33 07.6366196272 -81 20 14.128475593   13.49 13.35 13.65   DA4.1 139 0
28 HS 1531+7436 WD* 15 30 35.1380708136 +74 26 06.959485932   16.57 16.36     DA3.8 12 0
29 V* KX Dra WD* 15 41 44.8895982744 +64 53 52.977685920   15.7       DA4.2 47 1
30 Ross 808 WD* 16 01 23.1868739817 +36 48 34.288643534   14.53   14.7   DA4.4 109 0
31 HS 1625+1231 WD* 16 28 13.3374112416 +12 24 52.713454824   16.1       DA4.2 27 0
32 V* DN Dra WD* 16 48 25.6318375106 +59 03 22.658985521   12.34 12.17 12.44   DA4.0 214 0
33 BPM 24754 WD* 17 19 01.0244255304 -54 46 16.960940940       15.81 15.48 DA4.5 32 1
34 HS 1824+6000 WD* 18 24 44.2871802864 +60 01 59.396214900   15.7       DA4.3 13 0
35 EGGR 127 WD* 18 57 30.1772042847 +33 57 25.775771950   14.81   14.8   DA4.1 79 0
36 V* PY Vul WD* 19 37 13.7502269447 +27 43 18.733503670   13.14   12.7   DA4.0 128 0
37 V* PT Vul WD* 19 52 27.8765406336 +25 09 29.175649632   15.13   15.1   DA4.2 69 0
38 EGGR 450 WD* 21 49 59.1886559123 +54 08 39.501485233   16.2   16.1   DA4.2 26 0
39 MCT 2148-2910 WD* 21 51 39.8762018760 -28 56 53.087470404   16.03 15.91 16.22   DA4.3 17 0
40 GD 244 WD* 22 56 46.1531007720 +12 52 50.311741512   16.0   15.6   DA4.2 48 1
41 PG 2303+243 WD* 23 06 17.6909597616 +24 32 07.677555468   15.4   15.2   DA4.3 54 0
42 V* ZZ Psc WD* 23 28 47.6365087803 +05 14 54.235051503   13.17   13.0   DA4.1 484 0
43 EGGR 405 WD* 23 49 53.4642375816 +13 06 12.922792560   15.9   16.3   DA4.4 51 0
44 V* HW Aqr WD* 23 51 22.0904044560 -24 08 17.326740768   15.52   15.1   DA4.2 43 0

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