Helium abundance effects on RR Lyrae pulsation properties

Date Issued
2016
Author(s)
•
Coppola, G.
•
Bono, G.
•
•
Abstract
A new set of nonlinear convective pulsation models of RR Lyrae stars has been computed varying both the metallicity and the helium content. To constrain the helium dependence of pulsation observables we adopted, for each metal content, at least three different helium abundances. We provide for the first time a homogeneous evolutionary and pulsation framework covering the entire range of cluster and field variables. The implications for the use of RR Lyrae as stellar population tracers and distance indicators are briefly discussed.
Coverage
RRL2015: High-Precision Studies of RR Lyrae Stars
All editors
Szabados, L.; Szabó, R.; Kinemuchi, K.
Series
Volume
105
Start page
125
Conferenece
RRL2015: High-Precision Studies of RR Lyrae Stars
Conferenece place
Visegràd (Ungheria)
Conferenece date
19-22 Ottobre 2015
Uri
Url
Issn Identifier
0238-2091
Ads BibCode
2016CoKon.105..125M
Rights
open.access
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Marconi16.pdf

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