Matches in SemOpenAlex for { <https://semopenalex.org/work/W3120320668> ?p ?o ?g. }
Showing items 1 to 83 of
83
with 100 items per page.
- W3120320668 abstract "The formation of sdBs is still puzzling, as is the chemical composition of their atmospheres. While helium and other light elements are depleted relative to solar values, heavy elements are highly enriched. Diffusion processes in the hot, radiative atmosphere of these stars are the most likely explanation. Although several attempts were made, it was not yet possible to model all the observed features of sdB atmospheres. A setback of most prior studies was the small sample size. We present a detailed abundance analysis of 68 sdBs. From high resolution spectra obtained with the VLT/UVES instrument in the course of the ESO Supernova Progenitor Survey (SPY) we measured elemental abundances of up to 24 different ions per star. A general trend of enrichment was found with increasing temperature for most of the heavier elements. The lighter elements like carbon, oxygen and nitrogen are depleted irrespective of the temperature. Although there is considerable scatter from one star to another, the general abundance patterns in most sdBs are similar. An interplay between gravitational settling, radiative levitation and weak winds is most likely responsible. About 6 % of the analysed stars show an enrichment in carbon and helium which cannot be explained in the framework of diffusion alone. Nuclear processed material must have been transported to the surface. The late hot-flasher scenario may provide a possible explanation for this effect." @default.
- W3120320668 created "2021-01-18" @default.
- W3120320668 creator A5018232488 @default.
- W3120320668 creator A5038398336 @default.
- W3120320668 creator A5039083242 @default.
- W3120320668 date "2008-04-08" @default.
- W3120320668 modified "2023-09-27" @default.
- W3120320668 title "Metal Abundances of Subdwarf B Stars from SPY - a Pattern Emerges" @default.
- W3120320668 hasPublicationYear "2008" @default.
- W3120320668 type Work @default.
- W3120320668 sameAs 3120320668 @default.
- W3120320668 citedByCount "0" @default.
- W3120320668 crossrefType "posted-content" @default.
- W3120320668 hasAuthorship W3120320668A5018232488 @default.
- W3120320668 hasAuthorship W3120320668A5038398336 @default.
- W3120320668 hasAuthorship W3120320668A5039083242 @default.
- W3120320668 hasConcept C104779481 @default.
- W3120320668 hasConcept C110896241 @default.
- W3120320668 hasConcept C121332964 @default.
- W3120320668 hasConcept C1276947 @default.
- W3120320668 hasConcept C140205800 @default.
- W3120320668 hasConcept C150846664 @default.
- W3120320668 hasConcept C159985019 @default.
- W3120320668 hasConcept C184779094 @default.
- W3120320668 hasConcept C192562407 @default.
- W3120320668 hasConcept C197445014 @default.
- W3120320668 hasConcept C44870925 @default.
- W3120320668 hasConcept C505870484 @default.
- W3120320668 hasConcept C546029482 @default.
- W3120320668 hasConcept C62520636 @default.
- W3120320668 hasConcept C65440619 @default.
- W3120320668 hasConcept C68944897 @default.
- W3120320668 hasConcept C74902906 @default.
- W3120320668 hasConcept C77077793 @default.
- W3120320668 hasConcept C86803240 @default.
- W3120320668 hasConcept C97355855 @default.
- W3120320668 hasConceptScore W3120320668C104779481 @default.
- W3120320668 hasConceptScore W3120320668C110896241 @default.
- W3120320668 hasConceptScore W3120320668C121332964 @default.
- W3120320668 hasConceptScore W3120320668C1276947 @default.
- W3120320668 hasConceptScore W3120320668C140205800 @default.
- W3120320668 hasConceptScore W3120320668C150846664 @default.
- W3120320668 hasConceptScore W3120320668C159985019 @default.
- W3120320668 hasConceptScore W3120320668C184779094 @default.
- W3120320668 hasConceptScore W3120320668C192562407 @default.
- W3120320668 hasConceptScore W3120320668C197445014 @default.
- W3120320668 hasConceptScore W3120320668C44870925 @default.
- W3120320668 hasConceptScore W3120320668C505870484 @default.
- W3120320668 hasConceptScore W3120320668C546029482 @default.
- W3120320668 hasConceptScore W3120320668C62520636 @default.
- W3120320668 hasConceptScore W3120320668C65440619 @default.
- W3120320668 hasConceptScore W3120320668C68944897 @default.
- W3120320668 hasConceptScore W3120320668C74902906 @default.
- W3120320668 hasConceptScore W3120320668C77077793 @default.
- W3120320668 hasConceptScore W3120320668C86803240 @default.
- W3120320668 hasConceptScore W3120320668C97355855 @default.
- W3120320668 hasLocation W31203206681 @default.
- W3120320668 hasOpenAccess W3120320668 @default.
- W3120320668 hasPrimaryLocation W31203206681 @default.
- W3120320668 hasRelatedWork W1611852730 @default.
- W3120320668 hasRelatedWork W1983813573 @default.
- W3120320668 hasRelatedWork W1988745798 @default.
- W3120320668 hasRelatedWork W2057218226 @default.
- W3120320668 hasRelatedWork W2084626646 @default.
- W3120320668 hasRelatedWork W2105770258 @default.
- W3120320668 hasRelatedWork W2121982214 @default.
- W3120320668 hasRelatedWork W2123231350 @default.
- W3120320668 hasRelatedWork W2126331421 @default.
- W3120320668 hasRelatedWork W2190144535 @default.
- W3120320668 hasRelatedWork W2922379625 @default.
- W3120320668 hasRelatedWork W2952746680 @default.
- W3120320668 hasRelatedWork W2964054166 @default.
- W3120320668 hasRelatedWork W3082319180 @default.
- W3120320668 hasRelatedWork W3099880598 @default.
- W3120320668 hasRelatedWork W3103366582 @default.
- W3120320668 hasRelatedWork W3105362847 @default.
- W3120320668 hasRelatedWork W3106008382 @default.
- W3120320668 hasRelatedWork W3112170237 @default.
- W3120320668 hasRelatedWork W215617425 @default.
- W3120320668 isParatext "false" @default.
- W3120320668 isRetracted "false" @default.
- W3120320668 magId "3120320668" @default.
- W3120320668 workType "article" @default.