Results 11 to 20 of about 72,602 (336)
Blue Horizontal Branch Stars in M92 [PDF]
The Astronomical Journal, 1997 14 pages with 2 figures, LateX, to be published in the Astronomical ...
Cohen, J. G., McCarthy, J. K.
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Pulsational instabilities in hot pre-horizontal branch stars [PDF]
EPJ Web of Conferences, 2017 The ϵ mechanism is a self-excitation mechanism of pulsations which acts on the regions where nuclear burning takes place. It has been shown that the ϵ mechanism can excite pulsations in models of hot helium-core flash, and that the pulsations of LS IV-14·
Battich Tiara +3 more
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Red horizontal branch stars in the Galactic field: A chemical abundance survey [PDF]
EPJ Web of Conferences, 2013 A large sample survey of Galactic red horizontal-branch (RHB) stars was conducted to investigate their atmospheric parameters and elemental abundances.
Fo B.-Q., Sneden C., Afşar M.
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The Blue Horizontal-branch Stars from the LAMOST Survey: Atmospheric Parameters [PDF]
The Astrophysical Journal Supplement SeriesBlue horizontal-branch (BHB) stars are crucial for studying the structure of the Galactic halo. Accurate atmospheric parameters of BHB stars are essential for investigating the formation and evolution of the Galaxy.
Jie Ju +6 more
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The binary fraction of blue horizontal branch stars
Astronomy & AstrophysicsContext. Blue horizontal branch (BHB) stars are old, low-mass, metal-poor stars that serve as important tracers of the Galactic halo structure, kinematics, and evolution. Understanding their binary properties provides key insights into their formation channels and the role of binary interactions in the evolution of horizontal branch stars. Aims.
Yanjun Guo +8 more
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Identification of Blue Horizontal-branch Stars Using Synthetic SkyMapper Colors from Gaia XP Spectra
The Astrophysical Journal Supplement SeriesBlue horizontal-branch (BHB) stars are ideal tracers for mapping the structure of the Galactic stellar halo. Traditionally, BHB sample stars are built from large-scale spectroscopic surveys utilizing their spectral features; however, the resulting sample
Guozhen Hu +11 more
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Hot Horizontal‐Branch Stars in the Galactic Bulge. I. [PDF]
The Astrophysical Journal, 1999 We report the discovery of hot horizontal branch stars in the nuclear bulge of the Milky Way. Spectra from the 2dF instrument of the Anglo-Australian Telescope allow us to confirm their membership in the bulge through radial velocities. We also review the current observational information on hot horizontal branch stars in Milky Way clusters and the ...
Peterson, Ruth C. +3 more
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Gravonuclear Instabilities in Post-Horizontal-Branch Stars [PDF]
, 1999 We investigate the gravonuclear instabilities reported by Bono et al. (1997a,b) during the onset of helium-shell burning at the end of the horizontal-branch (HB) phase. These instabilities are characterized by relaxation oscillations within the helium shell which lead to loops in the evolutionary tracks.
Sweigart, Allen V. +3 more
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Horizontal-Branch Stars as an Age Indicator [PDF]
, 1999 10 pages, 2 figures, Invited paper presented at the workshop on "Spectrophotometric Dating of Stars & Galaxies", held at Annapolis, MD, USA, in April 25-29 ...
Lee, Young-Wook +3 more
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Possible Models of Horizontal Branch Stars.
The Astronomical Journal, 1966 Icko, Jr. Iben, John Faulkner
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