2003A&A...397..961R


C.D.S. - SIMBAD4 rel 1.7 - 2020.10.23CEST02:38:30

2003A&A...397..961R - Astronomy and Astrophysics, volume 397, 961-967 (2003/1-3)

A model of the dwarf nova WX Cet.

ROGOZIECKI P. and SCHWARZENBERG-CZERNY A.

Abstract (from CDS):

We analyse time-resolved spectroscopy of WX Cet, a dwarf nova of the WZ Sge class, by means of a dynamical model based on the measured K1 and using the superhump period excess ε to constrain the mass ratio q of this CB. From time resolved spectroscopy of Thorstensen et al. we determine orbital amplitude K1 and separation 2Vd of the disk emission lines as well as the S-wave amplitude As and relative phase α of the hot spot. Our dynamical analysis, following Smak's inclination independent solution for WZ Sge, yields rather high q, hardly compatible with the superhump resonance condition within the accretion disc. Rejecting K1 as affected by tidal and/or stream effects, we follow Patterson and determine q=0.085 from q-ε relation based on superhump dynamics. In this way we obtain likely masses of the components M1=0.55±0.15M and M2=0.047±0.013M. From this result we argue that despite similarities to WZ Sge, WX Cet with its relatively massive secondary represents an earlier stage of mass transfer in a cataclysmic binary than WZ Sge.

Abstract Copyright:

Journal keyword(s): stars: novae, cataclysmic variables - stars: dwarf novae - stars: individual: WX Cet - stars: individual: WZ Sge - accretion, accretion disks

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 - 2020
#notes
1 V* WX Cet DN* 01 17 04.17 -17 56 23.0           ~ 163 0
2 V* TV Col No* 05 29 25.5292527066 -32 49 03.900974253     13.60     K1 306 0
3 V* WZ Sge DN* 20 07 36.5036203067 +17 42 14.733657651   15.30 15.20     DAepv 892 0
4 V* UU Aqr NL* 22 09 05.7611667934 -03 46 17.688400697   10.90       ~ 116 0

    Equat.    Gal    SGal    Ecl

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2020.10.23-02:38:30

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