The Contribution of the Absorption Processes to the Opacity of DB White Dwarf Atmospheres in UV and VUV Regions

Journal Article · Thu Jan 21 00:00:00 EST 2010 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3322343· OSTI ID:21371440

Ignjatovic, Lj M; Mihajlov, A A; Sakan, N M ^[1]; Metropoulos, A ^[2]; Dimitrijevic, M S ^[3]

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1. Institute of Physics, P. O. Box 57, 11001 Belgrade (Serbia)
2. Theoretical and Physical Chemistry Institute, NHRF, Athens (Greece)
3. Astronomical Observatory, Volgina 7, 11160 Belgrade 74 (Serbia)

The main aim of this work is to estimate the total contribution to the opacity of DB white dwarf atmosphere of the processes of the He{sub 2}{sup +} molecular ion photo-dissociation and He+He{sup +} collisional absorption charge exchange, and compare it with the contribution of He{sup -}, and other relevant, radiative absorption processes included in standard models.

• OSTI ID: 21371440
• Journal Information: AIP Conference Proceedings, Vol. 1203, Issue 1; Conference: 7. international conference of the Balkan Physical Union, Alexandroupolis (Greece), 9-13 Sep 2009; Other Information: DOI: 10.1063/1.3322343; (c) 2010 American Institute of Physics; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
ABSORPTION
ASTROPHYSICS
CHARGE EXCHANGE
COMPARATIVE EVALUATIONS
DISSOCIATION
FAR ULTRAVIOLET RADIATION
HELIUM
HELIUM IONS
ION-ATOM COLLISIONS
MOLECULAR IONS
OPACITY
PHOTOIONIZATION
STELLAR ATMOSPHERES
ULTRAVIOLET RADIATION
WHITE DWARF STARS
ATMOSPHERES
ATOM COLLISIONS
CHARGED PARTICLES
COLLISIONS
DWARF STARS
ELECTROMAGNETIC RADIATION
ELEMENTS
EVALUATION
FLUIDS
GASES
ION COLLISIONS
IONIZATION
IONS
NONMETALS
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
PHYSICS
RADIATIONS
RARE GASES
SORPTION
STARS