Helium-rich white dwarf atmospheres: the non-symmetric ion-atom absorption processes

被引：0

作者：

Sreckovic, V. A. ^{[1
]}

Mihajlov, A. A. ^{[1
]}

Mignjatovic, Lj ^{[1
]}

Dimitrijevic, M. S. ^{[2
,3
,4
]}

机构：

[1] Univ Belgrade, Inst Phys, POB 57, Belgrade 11001, Serbia

[2] Astron Observ, Volgina, Serbia

[3] IHIS Technoexperts, Zemun, Serbia

[4] Observ Paris, F-92195 Paris, France

来源：

27TH SUMMER SCHOOL AND INTERNATIONAL SYMPOSIUM ON THE PHYSICS OF IONIZED GASES (SPIG 2014) | 2014年 / 565卷

关键词：

HEH+ MOLECULAR ION; CONFIGURATION-INTERACTION; DB;

D O I：

10.1088/1742-6596/565/1/012022

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Here, the processes of photo-association and absorption charge-exchange in He+H+ collisions together with the process of molecular ion HeH+ photo-dissociation are considered as factors of influence on the opacity of the atmospheres of helium-rich white dwarfs in the far UV region. It is shown that they should be taken into account even in the cases of the atmospheres of white dwarfs with H:He =10(-5). Also, it is established that in the cases of white dwarfs with H:He greater than or similar to 10(-4), especially when H:He approximate to 10(-3), these processes have to be included ab initio in the corresponding models of their atmospheres.

引用

页数：11

共 42 条

[1] Absorption non-symmetric ion-atom processes in helium-rich white dwarf atmospheres
Ignjatovic, Lj M.
Mihajlov, A. A.
Sreckovic, V. A.
Dimitrijevic, M. S.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2014, 439 (03) : 2342 - 2350
[2] The non-symmetric ion-atom radiative processes in the stellar atmospheres
Mihajlov, A. A.
Ignjatovic, Lj M.
Sreckovic, V. A.
Dimitrijevic, M. S.
Metropoulos, A.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2013, 431 (01) : 589 - 599
[3] Excitation and deexcitation processes in atom-Rydberg atom collisions in helium-rich white dwarf atmospheres
Sreckovic, V. A.
Mihajlov, A. A.
Ignjatovic, Lj M.
Dimitrijevic, M. S.
ASTRONOMY & ASTROPHYSICS, 2013, 552
[4] THE INFLUENCE OF ION-ATOM RADIATIVE COLLISIONS ON THE CONTINUOUS OPTICAL-SPECTRA IN HELIUM-RICH DB WHITE-DWARF ATMOSPHERES
MIHAJLOV, AA
DIMITRIJEVIC, MS
IGNJATOVIC, LM
ASTRONOMY & ASTROPHYSICS, 1994, 287 (03) : 1026 - 1028
[5] METAL ABUNDANCES IN HELIUM-RICH WHITE-DWARF ATMOSPHERES
ZEIDLER, EM
WEIDEMANN, V
KOESTER, D
ASTRONOMY & ASTROPHYSICS, 1986, 155 (02) : 356 - 370
[6] Symmetric Atom-Atom and Ion-Atom Processes in Stellar Atmospheres
Sreckovic, Vladimir A.
Ignjatovic, Ljubinko M.
Dimitrijevic, Milan S.
ATOMS, 2018, 6 (01):
[7] Physical processes in the atmospheres of cool, helium-rich white dwarfs
Malo, A
Wesemael, F
Bergeron, P
11TH EUROPEAN WORKSHOP ON WHITE DWARFS, 1999, 169 : 465 - 468
[8] The influence of some non-symmetric ion-atom radiative collisions on the opacity of star atmospheres
Ignjatovic, LJM
Mihajlov, AA
IV SERBIAN CONFERENCE ON SPECTRAL LINE SHAPES, 2003, (76): : 25 - 25
[9] Helium-rich pal for white dwarf
不详
ASTRONOMY & GEOPHYSICS, 2023, 64 (04)
[10] The atmospheres of cool, helium-rich white dwarfs
Jorgensen, UG
Hammer, D
Borysow, A
Falkesgaard, J
ASTRONOMY & ASTROPHYSICS, 2000, 361 (01): : 283 - 292

← 1 2 3 4 5 →