2002A&A...381..122V

Query : 2002A&A...381..122V

2002A&A...381..122V - Astronomy and Astrophysics, volume 381122-150 (2002/1-1)

. Asteroseismology of RXJ 2117+3412, the hottest pulsating PG 1159 star.

VAUCLAIR G., MOSKALIK P., PFEIFFER B., CHEVRETON M., DOLEZ N., SERRE B., KLEINMAN S.J., BARSTOW M., SANSOM A.E., SOLHEIM J.-E., BELMONTE J.A., KAWALER S.D., KEPLER S.O., KANAAN A., GIOVANNINI O., WINGET D.E., WATSON T.K., NATHER R.E., CLEMENS J.C., PROVENCAL J., DIXSON J.S., YANAGIDA K., NITTA-KLEINMAN A., MONTGOMERY M., KLUMPE E.W., BRUVOLD A., O'BRIEN M.S., HANSEN C.J., GRAUER A.D., BRADLEY P.A., WOOD M.A., ACHILLEOS N., JIANG S.Y., FU J.N., MARAR T.M.K., ASHOKA B.N., MEISTAS E.G., CHERNYSHEV A.V., MAZEH T., LEIBOWITZ E., HEMAR S., KRZESINSKI J., PAJDOSZ G. and ZOLA S.

Abstract (from CDS):

The pulsating PG 1159 planetary nebula central star RXJ 2117+3412 has been observed over three successive seasons of a multisite photometric campaign. The asteroseismological analysis of the data, based on the 37 identified l=1 modes among the 48 independent pulsation frequencies detected in the power spectrum, leads to the derivation of the rotational splitting, the period spacing and the mode trapping cycle and amplitude, from which a number of fundamental parameters can be deduced. The average rotation period is 1.16±0.05 days. The trend for the rotational splitting to decrease with increasing periods is incompatible with a solid body rotation. The total mass is 0.56+0.02–0.04 M☉ and the He-rich envelope mass fraction is in the range 0.013-0.078 M*. The luminosity derived from asteroseismology is log(L/L☉)= 4.05 +0.23–0.32 and the distance 760 +230–235 pc. At such a distance, the linear size of the planetary nebulae is 2.9±0.9 pc. The role of mass loss on the excitation mechanism and its consequence on the amplitude variations is discussed.

Abstract Copyright: ∼

Journal keyword(s): stars: fundamental parameters - stars: individual (RX J2117+3412) - stars: oscillations

Simbad objects: 13

goto Full paper

goto View the references in ADS

Number of rows : 13
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 PG 0122+200 WD* 01 25 22.5121704552 +20 17 56.963079924   16.2   16.9   DOZ.7 117 0
2 V* ZZ Cet WD* 01 36 13.6153974672 -11 20 32.632874601   14.328 14.16 14.4   DA4.0 307 0
3 NGC 1501 PN 04 06 59.3920909320 +60 55 14.278542024   15.17 13.0     [WO4] 314 1
4 PG 1144+005 WD* 11 46 35.2284791112 +00 12 33.539992056   14.922 15.233     PG1159 92 0
5 V* GW Vir WD* 12 01 45.9731868264 -03 45 40.628670300   14.87 15.04     DOQZ1 505 0
6 GD 358 WD* 16 47 18.3925183824 +32 28 32.862804384 12.511 13.530 13.653 13.752 13.852 DB2 364 0
7 PG 1707+427 WD* 17 08 47.6869215528 +42 41 00.558430656           PG1159 120 0
8 MWP 1 PN 21 17 08.2817782392 +34 12 27.415995372   12.731 13.082 13.379   PG1159 199 0
9 * ups Cyg Be* 21 17 55.0858548408 +34 53 48.825463560 3.50 4.32 4.42 4.37 4.45 B2Vne 321 0
10 * 70 Cyg * 21 27 21.3658834560 +37 07 00.466107924 4.51 5.142 5.293     B3V 76 0
11 V* IR Peg WD* 21 34 08.2124719240 +06 50 57.662044329   16.15       PG1159 122 0
12 HD 207516 Pu* 21 48 29.3544412392 +38 38 54.910013676   6.014 6.091     B8V 55 0
13 V* V409 And WD* 23 27 15.9353097240 +40 01 23.429781408   14.1 15.41     DO 89 0

To bookmark this query, right click on this link: simbad:objects in 2002A&A...381..122V and select 'bookmark this link' or equivalent in the popup menu