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New line profiles of sodium and potassium perturbed by helium for brown dwarf and very cool white dwarf stars
- Source :
- AIP Conference Proceedings, Spectral Line Shapes: Volume 15-19th International Conference On Spectral Line Shapes, Spectral Line Shapes: Volume 15-19th International Conference On Spectral Line Shapes, Jun 2008, Valladolid (Spain), Spain. pp.308-310, ⟨10.1063/1.3026467⟩
- Publication Year :
- 2008
- Publisher :
- AIP, 2008.
-
Abstract
- International audience; The optical spectra of L- and T-type dwarfs exhibit a continuum dominated by the far wings of the absorption profiles of the Na 3s-3p and K 4s-4p doublet perturbed by molecular hydrogen and helium. We report on our work on new calculations of line profiles of Na and K perturbed by He for the conditions prevailing in brown dwarf atmospheres and very cool white dwarfs.
- Subjects :
- Physics
Sodium
Potassium
Hydrogen molecule
Brown dwarf
chemistry.chemical_element
Astronomy
White dwarf
Astrophysics
Stellar classification
chemistry
Astrophysics::Solar and Stellar Astrophysics
Astrophysics::Earth and Planetary Astrophysics
[PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph]
Blue dwarf
Astrophysics::Galaxy Astrophysics
Helium
Subjects
Details
- Database :
- OpenAIRE
- Journal :
- AIP Conference Proceedings
- Accession number :
- edsair.doi.dedup.....1489626ab0190c4945464246c817ca35
- Full Text :
- https://doi.org/10.1063/1.3026467