LMC 1995, the third supersoft X-ray nova

Details LMC 1995, the third supersoft X-ray nova LMC 1995, the third supersoft X-ray nova

Apr 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999a%26a...344l..13o&link_type=abstract

Astronomy and Astrophysics, v.344, p.L13-L16 (1999)

Astronomy and Astrophysics

Astrophysics

20

Stars: Binaries: Close, Stars: Individual: N Lmc 1995, Stars: Mass-Loss, Stars: Novae, Cataclysmic Variables, Stars: White Dwarfs, X-Rays: Stars

Scientific paper

Nova LMC 1995 was detected with ROSAT as an X-ray source in repeated observations between 1995 and 1998, starting five months after the outburst. In February 1998, 3 years after the nova outburst, ROSAT PSPC data show that this is the only LMC post-nova - and one out of three among =~ 100 altogether - that appeared as a bright supersoft X-ray source after the outburst. The PSPC data are satisfactorily fitted with an LTE carbon-oxygen atmosphere model for a 1.2 M_sun white dwarf, resulting in an effective temperature about 30 eV. The X-ray flux increased in the last years and at present Nova LMC 1995 is about twice as bright as in a 1996 observation. We suggest that the photosphere is still shrinking and the remnant becoming hotter. Such a nova is a likely type Ia SN progenitor.

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