2010ApJ...715L.109V

Query : 2010ApJ...715L.109V

2010ApJ...715L.109V - Astrophys. J., 715, L109-L112 (2010/June-1)

The mass of the white dwarf in GW Libra.

VAN SPAANDONK L., STEEGHS D., MARSH T.R. and PARSONS S.G.

Abstract (from CDS):

We report a mass and rotational broadening (vsin i) for the pulsating white dwarf (WD) component of the WZ Sge type Dwarf Nova GW Lib based on high-resolution Very Large Telescope spectroscopy that resolves the Mg II 4481 Å absorption feature. Its gravitational redshift combined with WD mass-radius models provides us with a direct measurement of the WD mass of M1= 0.84 ±0.02 M☉. The line is clearly resolved and if associated with rotational broadening gives vsin i = 87.0±3.4 km/s, equivalent to a spin period of 97±12 s.

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Journal keyword(s): binaries: spectroscopic - novae, cataclysmic variables - stars: individual: GW Lib

Simbad objects: 4

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Number of rows : 4
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 V* VW Hyi CV* 04 09 11.3967378648 -71 17 41.554528260   12.786 12.543 14.160   DQ 661 0
2 V* U Gem CV* 07 55 05.2324414746 +22 00 05.044127985   15.3 14.54     DA 1135 0
3 V* GW Lib No* 15 19 55.3333785336 -25 00 24.614534520           DA: 228 0
4 V* WZ Sge CV* 20 07 36.5037622512 +17 42 14.733254952   15.30 15.20 10.817   D 982 0

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