Titlebook: New Quests in Stellar Astrophysics II; Ultraviolet Properti Miguel‘Chavez Dagostino Conference proceedings 2009 The Editor(s) (if applicabl

hauteur

描述

UV Excess and AGB Evolution in Elliptical-Galaxy Stellar Populations, contributors to galaxy ultraviolet luminosity excess. While a blue HB morphology seems a natural characteristic of metal-poor stellar populations, its appearance in metal-rich systems, often coupled with a poorer rate of planetary nebulae per unit galaxy luminosity, might be calling for an intimate

ear-canal

Binary Stars as the Source of the Far-UV Excess in Elliptical Galaxies,at this UV excess is caused by an old population of hot helium-burning stars without large hydrogen-rich envelopes rather than young stars, their origin has remained a mystery. Here we show that these stars most likely lost their envelopes because of binary interactions, similar to the hot subdwarf

Mystic

,Stellar Populations in Field Early–Type Galaxies,tudy from ultraviolet (UV) to infrared (IR) of a sample 65 nearby ETGs. We derived Lick line-strength indices at different galacto-centric distances from the optical spectra (3700-7000 Å), and extracted ages, metallicites and element abundance ratios for the galaxies by comparison of the indices wit

resuscitation

钱财

大喘气

无王时期,

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correspondent