Astronomy and Astrophysics – Astronomy
Scientific paper
Feb 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993mnras.260..647h&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 260, no. 3, p. 647-662.
Astronomy and Astrophysics
Astronomy
29
Accretion Disks, Boundary Layers, Cataclysmic Variables, Photoionization, Stellar Models, Stellar Winds, Radiative Transfer, Resonance Lines, Ultraviolet Spectra
Scientific paper
We have calculated a grid of detailed photoionization models for the stellar winds in non-magnetic cataclysmic variables. In the light of evidence which questions the existence of a classical hot, luminous boundary layer we investigate (i) models with cool, luminous boundary layers or (ii) models with no boundary layer at all, but with a moderately enhanced accretion rate in the disc. The ionization state predicted by these models is compared with that deduced from observations of the UV resonance lines in low-inclination nova-like variables. We find that the observed strength of the C IV and N v lines can be matched by models with luminous, cool boundary layers or with disc-only models where the accretion rate is 2 - 4 x 10 exp -8 solar mass/yr. The softer radiation field means that the required wind mass loss rates are only about 6 x 10 exp -10 solar mass/yr, i.e. only a few per cent of the accretion rate, in which case radiation pressure would be a viable mechanism for driving these winds.
Drew Janet E.
Hoare Melvin G.
No associations
LandOfFree
The ionization state of the winds from cataclysmic variables without classical boundary layers 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 ionization state of the winds from cataclysmic variables without classical boundary layers, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The ionization state of the winds from cataclysmic variables without classical boundary layers will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1275920