Mapping atmospheric motions in classical and type II cepheids

Monika Jurkovic, József Vinkó

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Type II Cepheids populate the same region of the instability strip as Classical Cepheids, but they belong to older stellar population. Their different stellar structure may result in different pulsational characteristics. We study the relative motion of the photospheric and chromospheric layers of Type II Cepheids by comparing radial velocities of metal lines and Hα. It is shown that in the P = 1-3, days regime the two types are markedly different, but their atmospheric motions become quite similar at longer periods.

Original languageEnglish
Title of host publicationPrecision Spectroscopy in Astrophysics
Subtitle of host publicationProceedings of the ESO/Lisbon/Aveiro Conference held in Aveiro, Portugal, 11-15 September 2006
EditorsNuno C. Santos, Luca Pasquini, Martino Romaniello, Alexandre C. M. Correia
Pages165-168
Number of pages4
DOIs
Publication statusPublished - Jan 1 2008

Publication series

NameESO Astrophysics Symposia
Volume2008
ISSN (Print)1431-2433
ISSN (Electronic)1611-6143

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Physics and Astronomy (miscellaneous)

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    Jurkovic, M., & Vinkó, J. (2008). Mapping atmospheric motions in classical and type II cepheids. In N. C. Santos, L. Pasquini, M. Romaniello, & A. C. M. Correia (Eds.), Precision Spectroscopy in Astrophysics: Proceedings of the ESO/Lisbon/Aveiro Conference held in Aveiro, Portugal, 11-15 September 2006 (pp. 165-168). (ESO Astrophysics Symposia; Vol. 2008). https://doi.org/10.1007/978-3-540-75485-5_36