THE INFLUENCE OF ION-ATOM RADIATIVE COLLISIONS ON THE CONTINUOUS OPTICAL-SPECTRA IN HELIUM-RICH DB WHITE-DWARF ATMOSPHERES

Authors
MIHAJLOV AA DIMITRIJEVIC MS IGNJATOVIC LM
Citation
Aa. Mihajlov et al., THE INFLUENCE OF ION-ATOM RADIATIVE COLLISIONS ON THE CONTINUOUS OPTICAL-SPECTRA IN HELIUM-RICH DB WHITE-DWARF ATMOSPHERES, Astronomy and astrophysics, 287(3), 1994, pp. 1026-1028
Citations number
10
Categorie Soggetti
Astronomy & Astrophysics
Journal title
Astronomy and astrophysics → ACNP
ISSN journal
00046361
Volume
287
Issue
3
Year of publication
1994
Pages
1026 - 1028
Database
ISI
SICI code
0004-6361(1994)287:3<1026:TIOIRC>2.0.ZU;2-A
Abstract
We investigate the influence of radiative processes due to He+(1s)-He( 1s2) collisions on the continuous optical spectrum of the helium-rich DB white-dwarf atmospheres. We show that these ion-atom collision proc esses are important in certain layers of the studied white dwarf atmos phere, and that the corresponding contributions to the optical depth a nd continuous opacity are not negligible.