The cooling of the white dwarf in VW Hyi.

Details The cooling of the white dwarf in VW Hyi. The cooling of the white dwarf in VW Hyi.

May 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996a%26a...309l..47g&link_type=abstract

Astronomy and Astrophysics, v.309, p.L47-L50

Astronomy and Astrophysics

Astrophysics

45

Accretion, Binaries: Close, Stars: Atmospheres, Stars, Individual: Vw Hyi, Ultraviolet: Stars

Scientific paper

We present an analysis of the post-outburst evolution of VW Hyi based on the available IUE archive data. The spectrum closest to the previous outburst (~0.5days) shows a non-negligible contribution of a disc remnant while the white dwarf (WD) dominates the later observations. Following an outburst, the accretion-heated WD cools exponentially to a mean temperature T_wd_~19000K. The temperature decay time is significantly longer after a superoutburst (τ_S_=9.8days) than after a normal outburst (τ_N_=2.8days). Spectra obtained deep in quiescence (20 to 40 days past the previous outburst) show no further evolution. We demonstrate that a WD model with an inhomogeneous surface temperature and chemical composition can explain the observed metal absorption patterns.

Affiliated with

Also associated with

No associations

Rating

The cooling of the white dwarf in VW Hyi. does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with The cooling of the white dwarf in VW Hyi., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The cooling of the white dwarf in VW Hyi. will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1351498