Journal ArticleDOI
Metal-poor stars. III - On the evolution of horizontal-branch stars
Icko Iben,Robert T. Rood +1 more
TLDR
Horizontal branch stars evolution based on mass distributions from comparison with giant branch, investigating evolutionary track characteristics during core helium burning was studied in this paper, where the authors proposed a model of the evolution of horizontal branch stars.Abstract:
Horizontal branch stars evolution based on mass distributions from comparison with giant branch, investigating evolutionary track characteristics during core helium burningread more
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Journal ArticleDOI
Was there really a Big Bang
TL;DR: The evidence in favour of a big bang cosmology is much less definite than is widely realized, and it is not impossible that the authors are living in a steady state universe.
Journal ArticleDOI
Effects of pulsation and mass loss on stellar evolution
L. A. Willson,G. H. Bowen +1 more
TL;DR: It is pointed out that there are many possible consequences, some not previously recognized, of pulsation-related mass loss for the evolutionary behaviour of post-main sequence stars and advances the hypothesis that most mass loss of evolutionary significance is closely related to stellar pulsation.
Journal ArticleDOI
Variable stars in the Cetus dwarf spheroidal galaxy: population gradients and connections with the star formation history
Matteo Monelli,Matteo Monelli,Edouard J. Bernard,Carme Gallart,Carme Gallart,Giuliana Fiorentino,I. Drozdovsky,I. Drozdovsky,Antonio Aparicio,Antonio Aparicio,Giuseppe Bono,Giuseppe Bono,Santi Cassisi,E. D. Skillman,P. B. Stetson +14 more
TL;DR: In this article, the authors investigated the variable star content of the isolated, Local Group, dwarf spheroidal (dSph) galaxy Cetus and found that the properties of the RR Lyrae stars are homogeneous within the investigated area, with no significant evidence of a radial gradient.
Journal ArticleDOI
He i λ10830 Absorption in Metal‐Poor Red Giants: Probing Fast Chromospheric Outflows*
TL;DR: In this paper, a search for near-IR chromospheric HeI absorption in 10 metal-poor red giants using high-resolution spectra obtained with NIRSPEC on Keck II was conducted.
Journal ArticleDOI
BV Photometry of RR Lyrae Variables in the Globular Cluster NGC 5466
TL;DR: In this article, BV CCD photometry, light curves, and ephemerides for 20 RR Lyrae variables and the anomalous Cepheid, V19, in the globular cluster NGC 5466 are presented.