Rayleigh Scattering by Helium in Stellar Atmospheres

FIŠÁK, Jakub, Jiří KUBÁT and Jiří KRTIČKA. Rayleigh Scattering by Helium in Stellar Atmospheres. In A. Miroshnichenko, S. Zharikov, D. Korcakova, M. Wolf. B[e] Phenomenom: Forty Years of Studies. 508th ed. SAN FRANCISCO, USA: Astronomical Society of the Pacific, 2017, p. 115 - 120. ISBN 978-1-58381-900-5.

Basic information

Original name

Rayleigh Scattering by Helium in Stellar Atmospheres

Authors

FIŠÁK, Jakub (203 Czech Republic, belonging to the institution), Jiří KUBÁT (203 Czech Republic) and Jiří KRTIČKA (203 Czech Republic, belonging to the institution)

Edition

508. vyd. SAN FRANCISCO, USA, B[e] Phenomenom: Forty Years of Studies, p. 115 - 120, 6 pp. 2017

Publisher

Astronomical Society of the Pacific

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Other information

Language

English

Type of outcome

Stať ve sborníku

Field of Study

10308 Astronomy

Country of publisher

United States of America

Confidentiality degree

není předmětem státního či obchodního tajemství

Publication form

printed version "print"

RIV identification code

RIV/00216224:14310/17:00096231

Organization unit

Faculty of Science

ISBN

978-1-58381-900-5

UT WoS

000401591600017

Keywords in English

rayleigh scattering; helium; helium-rich stars

Tags

NZ, rivok

Tags

International impact

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Abstract

V originále

We study the influence of Rayleigh scattering by helium on synthetic spectra and stellar atmosphere models. Rayleigh scattering by helium is often neglected in hot star atmosphere models. This approximation is justified by the small population of helium in stars with solar composition (about 10% by number) and lower Rayleigh scattering total cross section of helium with respect to neutral hydrogen. However, for stars with large helium abundances Rayleigh scattering by helium can be a significant opacity source.