PoS - Proceedings of Science
Volume 288 - Accretion Processes in Cosmic Sources (APCS2016) - ACCRETION ONTO WHITE DWARFS, NEUTRON STARS & BLACK HOLES
ACCRETION PROCESSES IN COSMIC SOURCES: The Atmospheres of Accreting White Dwarfs
E. Sion* and P. Godon
Full text: pdf
Pre-published on: March 19, 2018
Published on: May 16, 2018
Abstract
A comparison is presented between the physical processes operative in single white dwarfs and
the physical processes operative in white dwarfs with donor star companions. The physical properties
and accretion physics of the hot accreting components in close interacting binaries is presented.
The N/C abundance anomaly seen is ∼10% of cataclysmic variables and the presence of
absorption lines due to heavy elements in suprasolar abundance are discussed. A synthetic spectral
analysis of the FUSE spectrum of the old nova RR Pic reveals reveals an accretion disk with
i = 60◦, Mwd = 1.0M⊙ and a high accretion rate of 10−8M⊙/yr. New evidence from the FUSE
and IUE spectra of the symbiotic system CQ Dra suggest it is a triple system consisting of a red
giant and a cataclysmic variable companion. The hot component in the symbiotic system, RW
Hya, consists of a white dwarf with a surface temperature of 160,000 K with log(g) = 6.5 and no
evidence of an accretion disk.
DOI: https://doi.org/10.22323/1.288.0023
How to cite

Metadata are provided both in "article" format (very similar to INSPIRE) as this helps creating very compact bibliographies which can be beneficial to authors and readers, and in "proceeding" format which is more detailed and complete.

Open Access
Creative Commons LicenseCopyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.