Cataclysmic variable evolution: AM Her binaries and the period gap
-
Altmetric Citations
Webbink, Ronald; Wickramasinghe, Dayal
Description
AM Her variables - synchronized magnetic cataclysmic variables (CVs) - exhibit a different period distribution from other CVs across the period gap. We show that non-AM Her systems may infiltrate the longer-period end of the period gap if they are metal-deficient, but that the position and width of the gap in orbital period are otherwise insensitive to other binary parameters (except for the normalization of the braking rate). In AM Her binaries, magnetic braking is reduced as the wind from the...[Show more]
dc.contributor.author | Webbink, Ronald | |
---|---|---|
dc.contributor.author | Wickramasinghe, Dayal | |
dc.date.accessioned | 2015-12-13T22:23:09Z | |
dc.date.available | 2015-12-13T22:23:09Z | |
dc.identifier.issn | 0035-8711 | |
dc.identifier.uri | http://hdl.handle.net/1885/72621 | |
dc.description.abstract | AM Her variables - synchronized magnetic cataclysmic variables (CVs) - exhibit a different period distribution from other CVs across the period gap. We show that non-AM Her systems may infiltrate the longer-period end of the period gap if they are metal-deficient, but that the position and width of the gap in orbital period are otherwise insensitive to other binary parameters (except for the normalization of the braking rate). In AM Her binaries, magnetic braking is reduced as the wind from the secondary star may be trapped within the magnetosphere of the white dwarf primary. This reduced braking fills the period gap from its short-period end as the dipole magnetic moment of the white dwarf increases. The consistency of these models with the observed distribution of CVs, of both AM Her and non-AM Her type, provides compelling evidence supporting magnetic braking as the agent of angular momentum loss among long-period CVs, and its disruption as the explanation of the 2-3 h period gap among non-magnetic CVs. | |
dc.publisher | Blackwell Publishing Ltd | |
dc.source | Monthly Notices of the Royal Astronomical Society | |
dc.subject | Keywords: Novae, cataclysmic variables; Stars: evolution; Stars: magnetic fields | |
dc.title | Cataclysmic variable evolution: AM Her binaries and the period gap | |
dc.type | Journal article | |
local.description.notes | Imported from ARIES | |
local.description.refereed | Yes | |
local.identifier.citationvolume | 335 | |
dc.date.issued | 2002 | |
local.identifier.absfor | 020110 - Stellar Astronomy and Planetary Systems | |
local.identifier.ariespublication | MigratedxPub3342 | |
local.type.status | Published Version | |
local.contributor.affiliation | Webbink, Ronald, University of Illinois | |
local.contributor.affiliation | Wickramasinghe, Dayal, College of Physical and Mathematical Sciences, ANU | |
local.bibliographicCitation.issue | 1 | |
local.bibliographicCitation.startpage | 1 | |
local.bibliographicCitation.lastpage | 9 | |
local.identifier.doi | 10.1046/j.1365-8711.2002.05495.x | |
dc.date.updated | 2015-12-11T08:02:53Z | |
local.identifier.scopusID | 2-s2.0-0037554803 | |
Collections | ANU Research Publications |
Download
Items in Open Research are protected by copyright, with all rights reserved, unless otherwise indicated.
Updated: 17 November 2022/ Responsible Officer: University Librarian/ Page Contact: Library Systems & Web Coordinator