Results 71 to 80 of about 244,384 (192)

Discovery of Blue Hook Stars in the Massive Globular Cluster M54

open access: yes, 2003
We present BV photometry centered on the globular cluster M54 (NGC 6715). The color-magnitude diagram clearly shows a blue horizontal branch extending anomalously beyond the zero age horizontal branch theoretical models.
Alejandra Recio‐Blanco   +7 more
core   +1 more source

Cold Fronts and Gas Sloshing in Galaxy Clusters with Anisotropic Thermal Conduction

open access: yes, 2012
(Abridged) Cold fronts in cluster cool cores should be erased on short timescales by thermal conduction, unless protected by magnetic fields that are "draped" parallel to the front surfaces, suppressing conduction perpendicular to the fronts.
Lee, D.   +3 more
core   +1 more source

The Efficacy of Herbal Medicines for Treatment of Hot Flash: A Systematic Review

open access: yesJournal of Medicinal Plants, 2017
Background: Hot flashing is the most common symptoms experienced by women around the menopause time. The most common therapy for relief of menopausal symptoms is Hormone Replacement Therapy (HRT), but it has side effects. So, many women are interested in
L Kashani   +2 more
doaj  

Hydrodynamic simulations of shell convection in stellar cores

open access: yes, 2011
Shell convection driven by nuclear burning in a stellar core is a common hydrodynamic event in the evolution of many types of stars. We encounter and simulate this convection (i) in the helium core of a low-mass red giant during core helium flash leading
A Chieffi   +15 more
core   +1 more source

Pulsational instabilities in hot pre-horizontal branch stars

open access: yesEPJ 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
doaj   +1 more source

Nucleosynthesis of Elements in Low to Intermediate Mass Stars through the AGB Phase

open access: yes, 1997
We present a review of the main phases of stellar evolution with particular emphasis on the nucleosynthesis and mixing mechanisms in low- and intermediate-mass stars. In addition to explicit studies of the effects of the first, second and third dredge-up,
Boothroyd, Arnold I., Lattanzio, John C.
core   +2 more sources

Ultraviolet Radiation from Evolved Stellar Populations: II. The Ultraviolet Upturn Phenomenon in Elliptical Galaxies

open access: yes, 1994
We present an analysis of the far-ultraviolet upturn phenomenon (UVX) observed in elliptical galaxies and spiral galaxy bulges. Our premise is that the UV radiation from these systems emanates primarily from extreme horizontal branch (EHB) stars and ...
Dorman, Ben   +2 more
core   +2 more sources

Geothermal Energy: Tapping the Energy in the Earth's Core [PDF]

open access: yes, 2006
Key facts: - Geothermal energy comes from the heat in the Earth's core. This heat creates underground reservoirs of steam and hot water, which can be tapped to generate electricity or to heat and cool buildings directly.

core  

Urinary phthalate metabolite concentrations and hot flash outcomes: Longitudinal associations in the Midlife Women's Health Study. [PDF]

open access: yesEnviron Res, 2023
Babadi RS   +7 more
europepmc   +1 more source

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