This title appears in the Scientific Report :
2017
Please use the identifier:
http://hdl.handle.net/2128/15908 in citations.
A New Generation of Cool White Dwarf Atmosphere Models Using Ab Initio Calculations
A New Generation of Cool White Dwarf Atmosphere Models Using Ab Initio Calculations
Due to their high photospheric density, cool helium-rich white dwarfs (particularly DZ, DQpec and ultracool) are often poorly described by current atmosphere models. As part of our ongoing efforts to design atmosphere models suitable for all cool white dwarfs, we investigate how the ionization ratio...
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Personal Name(s): | Blouin, Simon (Corresponding author) |
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Dufour, Patrick / Kowalski, Piotr | |
Contributing Institute: |
Nukleare Entsorgung; IEK-6 |
Published in: | 509 S. 227 |
Published in: |
[Print] 20th European White Dwarf Workshop : proceedings of a conference held at University of Warwick, Coventry, West Midlands, United Kingdom, 25-29 July 2016 / Tremblay, Pier-Emmanuel ; Gänsicke, Boris T. ; Marsh, Tom First edition, San Francisco : Astronomical Society of the Pacific, [2017], |
Imprint: |
San Francisco
Astronomical Society of the Pacific
2017
|
Physical Description: |
xxii, 579 Seiten : Illustrationen, Diagramme |
ISBN: |
978-1-58381-903-6 9781583819036 |
Conference: | 20th European White Dwarf Workshop, Warwick (UK), 2016-07-25 - 2016-07-29 |
Document Type: |
Contribution to a book Contribution to a conference proceedings |
Research Program: |
Nuclear Waste Management |
Series Title: |
Astronomical Society of the Pacific conference series
509 |
Subject (ZB): | |
Link: |
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Publikationsportal JuSER |
Due to their high photospheric density, cool helium-rich white dwarfs (particularly DZ, DQpec and ultracool) are often poorly described by current atmosphere models. As part of our ongoing efforts to design atmosphere models suitable for all cool white dwarfs, we investigate how the ionization ratio of heavy elements and the H$_2$-He collision-induced absorption (CIA) spectrum are altered under fluid-like densities. For the conditions encountered at the photosphere of cool helium-rich white dwarfs, our ab initio calculations show that the ionization of most metals is inhibited and that the H$_2$-He CIA spectrum is significantly distorted for densities higher than 0.1 g/cm$^3$. |