Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aspc..334..411d&link_type=abstract
14th European Workshop on White Dwarfs, ASP Conference Series, Vol. 334 Proceedings of a meeting held at Kiel, July 19-23, 2004
Astronomy and Astrophysics
Astronomy
Scientific paper
The properties of white dwarf primaries in Intermediate Polars are mostly unknown because they almost never undergo low accretion states which can reveal the stellar components. V 709 Cas (Bonnet-Bidaud et al. 2001) and RX J1548-45 (Haberl et al. 2002) are the only two IPs known so far to show a peculiar optical spectrum, with broad absorption features around Balmer emissions but not around He lines, suggesting an origin in the white dwarf atmosphere. New optical observations and UV data of these systems make the white dwarf identification uncertain and leave the origin of the absorption features still controversial.
Bonnet-Bidaud Jean-Marc
de Martino Domitilla
Gaensicke Boris T.
Haberl Franck
Mouchet Martine
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