2006A&A...454..863C


Query : 2006A&A...454..863C

2006A&A...454..863C - Astronomy and Astrophysics, volume 454, 863-881 (2006/8-2)

Asteroseismic inferences on GW Virginis variable stars in the frame of new PG 1159 evolutionary models.

CORSICO A.H. and ALTHAUS L.G.

Abstract (from CDS):

An adiabatic, nonradial pulsation study of GW Vir stars is presented. The pulsation calculations were based on PG 1159 evolutionary sequences with different stellar masses artificially derived from a full evolutionary sequence of 0.5895M that has been computed by taking the evolutionary history of the progenitor star into account. The artificial sequences were constructed by appropriately scaling the stellar mass of the 0.5895M sequence well before the models reached the low-luminosity, high-gravity stage of the GW Vir domain. We computed g-mode pulsation periods appropriate to GW Vir variable stars. The implications for the mode-trapping properties of our PG 1159 models are discussed at length. We found that the mode-trapping features characterizing our PG 1159 models are mostly fixed by the stepped shape of the core chemical profile left by prior convective overshooting. This is particularly true at least for the range of periods observed in GW Vir stars. In addition, we make asteroseismic inferences about the internal structure of the GW Vir stars PG 1159-035, PG 2131+066, PG 1707+427, and PG 0122+200.

Abstract Copyright:

Journal keyword(s): dense matter - stars: white dwarfs - stars: oscillations

Simbad objects: 27

goto Full paper

goto View the references in ADS

Number of rows : 27
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2023
#notes
1 NGC 246 PN 00 47 03.3420341616 -11 52 18.971126076 10.15 11.52 11.76 12.18   PG1159 468 0
2 RX J0122.9-7521 WD* 01 22 53.4122561952 -75 21 14.724358308     15.4     PG1159 41 0
3 PG 0122+200 WD* 01 25 22.5121704552 +20 17 56.963079924   16.2   16.9   DOZ.7 109 0
4 GD 1088 ** 01 32 39.347 -19 21 40.38   15.51 15.77 15.77   PG1159 46 0
5 M 76 PN 01 42 19.6557728208 +51 34 31.534970052     17.48   17.69 DOZ 368 2
6 PN IsWe 1 PN 03 49 05.9053580088 +50 00 14.898517992 15.71 16.374 16.523 16.576 16.644 DOZ 61 1
7 HS 0444+0453 WD* 04 47 04.5045887496 +04 58 41.340500616   15.9   16.1   DQZO.5 24 0
8 HS 0704+6153 WD* 07 09 32.4965901360 +61 48 19.458822312   17.3   17.1   PG1159 38 0
9 WRAY 17-1 PN 07 14 49.4240697984 -46 57 39.199063500   13.8 13.00     PG1159 80 0
10 PN A66 21 PN 07 29 02.7096654192 +13 14 48.587555184   15.67 15.99     DOZ 187 0
11 PN ARO 121 PN 07 57 51.6169237320 +53 25 16.950484848   16.775 17.128 17.288 17.501 DQ 158 1
12 PN Lo 4 PN 10 05 45.7880109408 -44 21 33.523482384           sdO 133 1
13 PG 1144+005 WD* 11 46 35.2284791112 +00 12 33.539992056   14.59 14.9     PG1159 85 0
14 PG 1151-029 WD* 11 54 15.0623712576 -03 12 05.135581440   16.07       DOZ1 30 0
15 V* GW Vir WD* 12 01 45.9731868264 -03 45 40.628670300   14.87 15.04     DOQZ1 478 0
16 PG 1424+535 WD* 14 25 55.4615842224 +53 15 25.138507140   15.86       PG1159 72 0
17 HE 1429-1209 WD* 14 32 20.7451392024 -12 22 48.253478808   15.7 16.15 16.27   PG1159 25 0
18 PG 1501+664 WD* 15 02 09.6299323152 +66 12 19.148868324   16.07 16.37     DZQ1 153 0
19 HS 1517+7403 WD* 15 16 46.4260387056 +73 52 06.953282400   16.4   16.9   DO 39 0
20 PG 1520+525 PN 15 21 46.5635130432 +52 22 03.867341340   15.56 16.6     PG1159 108 1
21 PG 1707+427 WD* 17 08 47.6869215528 +42 41 00.558430656   16.18       PG1159 113 0
22 PN A66 43 PN 17 53 32.2767758208 +10 37 24.210757560   14.53 14.71     O7fk 133 0
23 PN K 1-16 PN 18 21 52.1086837968 +64 21 53.406292104   14.44 14.96 15.26   PG1159 245 0
24 MWP 1 PN 21 17 08.2817782392 +34 12 27.415995372     12.33     PG1159 182 0
25 V* IR Peg WD* 21 34 08.2124719240 +06 50 57.662044329   16.15       PG1159 116 0
26 V* V409 And WD* 23 27 15.9353097240 +40 01 23.429781408   14.1 15.41     DO 76 0
27 PN Jn 1 PN 23 35 53.3214838680 +30 28 06.336745212   15.52 15.62     DOZ 104 0

To bookmark this query, right click on this link: simbad:objects in 2006A&A...454..863C and select 'bookmark this link' or equivalent in the popup menu


2023.02.02-19:18:05

© Université de Strasbourg/CNRS

    • Contact