The Role of Opacities in Stellar Pulsation

Date Issued
2018
Author(s)
Kanbur, S. M.
•
•
Bhardwaj, A.
•
Kundu, R.
•
Singh, H. P.
Abstract
We examine the role of opacities in stellar pulsation with reference to Cepheids and RR Lyraes, and examine the effect of augmented opacities on the theoretical pulsation light curves in key temperature ranges. The temperature ranges are provided by recent experimental and theoretical works that have suggested that the iron opacities have been considerably underestimated. For Cepheids, we find that the augmented opacities have noticeable effects in certain period ranges (around logP ≍1) even though there is a degeneracy with mixing length. We also find significant effects in theoretical models of B-star pulsators.
Coverage
Workshop on Astrophysical Opacities
All editors
Mendoza,Claudio; Turck-Chièze, Sylvaine; Colgan, James
Series
Volume
515
Start page
189
Conferenece
Workshop on Astrophysical Opacities
Conferenece place
Kalamazoo, Michigan
Conferenece date
1-4 August, 2017
Uri
Url
Issn Identifier
1050-3390
Ads BibCode
2018ASPC..515..189K
Rights
open.access
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