Speaker
Prof.
Shashi Kanbur
(SUNY Oswego)
Description
We review the role of opacities in classical stellar pulsation - specifically in Cepheids and RR Lyres: two groups of pulsating variable stars that have crucial roles in the age and distance scale. We review the success of a previous revision of astrophysical opacities in ameliorating the Cepheid bump mass discrepancy and assess the possible impact of a further increase in Rosseland mean opacities of about 15% in stellar evolutionary and pulsation models in the context of the large quantities of accurate variable star light curves that are now available. This new data will permit much more rigorous assessment of the impact of new opacities. We close with a brief discussion of opacities in B star pulsation.
Primary author
Prof.
Shashi Kanbur
(SUNY Oswego)
Co-authors
Mr
Anupam Bhardwaj
(Delhi University)
Mr
Earl Bellinger
(Yale University)
Dr
HP Singh
(Delhi University)
Dr
Marcella Marconi
(INAF Osservatorio Astronomico di Capodimonte, Napoli)
Ms
Richa Kundu
(Delhi University)
