Matches in SemOpenAlex for { <https://semopenalex.org/work/W2079774600> ?p ?o ?g. }
Showing items 1 to 69 of
69
with 100 items per page.
- W2079774600 endingPage "136" @default.
- W2079774600 startingPage "129" @default.
- W2079774600 abstract "Archived monochromatic opacities, obtained in the course of the work of the Opacity Project, are used to obtain data required for the calculation of radiative accelerations. These data are being made generally available through the Centre de Donnees de Strasbourg (CDS). The new atomic data are used in an exploratory study of the abundances of Manganese in HgMn stars. In most such stars observations show enhanced atmospheric Mn abundances, which result from processes of diffusion. We define χ to be the factor by which abundances are enhanced (or depleted). Due to saturation effects, the radiative accelerations grad(χ) decrease as χ increases and may eventually reach values smaller that the gravitational acceleration ggrav: χstat is defined to be the value of χ for which the diffusion velocity is zero. Using results from ultra-violet observations one obtains abundances χobs always a good deal smaller than χstat. It follows that there must be outflow at the stellar surfaces. Solutions are obtained of the equations for time-dependent diffusion. The initial conditions are taken to be χ = 1 (unmodified abundances) at time t = 0. With such abundances the flux F = nv for Mn is found to be very large at depths with temperatures in the vicinity of log (T) 5.3, the region giving the Z-bump in Rosseland mean opacities. As time advances, those large fluxes move to the outer layers and give atmospheric abundances in agreement with the maximum values which are observed. At later times the atmospheric abundances decrease." @default.
- W2079774600 created "2016-06-24" @default.
- W2079774600 creator A5063045760 @default.
- W2079774600 date "1996-01-01" @default.
- W2079774600 modified "2023-09-26" @default.
- W2079774600 title "Atomic data for the calculation of radiative accelerations and diffusion of Mn in HgMn stars" @default.
- W2079774600 cites W1968844008 @default.
- W2079774600 cites W1987843648 @default.
- W2079774600 cites W2003998552 @default.
- W2079774600 cites W2004760246 @default.
- W2079774600 cites W2012727832 @default.
- W2079774600 cites W2016073034 @default.
- W2079774600 cites W2016881231 @default.
- W2079774600 cites W2025155636 @default.
- W2079774600 cites W2031078856 @default.
- W2079774600 cites W2040823427 @default.
- W2079774600 cites W2054408680 @default.
- W2079774600 cites W2077634752 @default.
- W2079774600 cites W2090434735 @default.
- W2079774600 cites W2091641456 @default.
- W2079774600 cites W2114894887 @default.
- W2079774600 cites W2141487670 @default.
- W2079774600 doi "https://doi.org/10.1088/0031-8949/1996/t65/018" @default.
- W2079774600 hasPublicationYear "1996" @default.
- W2079774600 type Work @default.
- W2079774600 sameAs 2079774600 @default.
- W2079774600 citedByCount "8" @default.
- W2079774600 crossrefType "journal-article" @default.
- W2079774600 hasAuthorship W2079774600A5063045760 @default.
- W2079774600 hasConcept C120665830 @default.
- W2079774600 hasConcept C121332964 @default.
- W2079774600 hasConcept C150846664 @default.
- W2079774600 hasConcept C192562407 @default.
- W2079774600 hasConcept C30475298 @default.
- W2079774600 hasConcept C39432304 @default.
- W2079774600 hasConcept C44870925 @default.
- W2079774600 hasConcept C69357855 @default.
- W2079774600 hasConcept C74902906 @default.
- W2079774600 hasConcept C97355855 @default.
- W2079774600 hasConceptScore W2079774600C120665830 @default.
- W2079774600 hasConceptScore W2079774600C121332964 @default.
- W2079774600 hasConceptScore W2079774600C150846664 @default.
- W2079774600 hasConceptScore W2079774600C192562407 @default.
- W2079774600 hasConceptScore W2079774600C30475298 @default.
- W2079774600 hasConceptScore W2079774600C39432304 @default.
- W2079774600 hasConceptScore W2079774600C44870925 @default.
- W2079774600 hasConceptScore W2079774600C69357855 @default.
- W2079774600 hasConceptScore W2079774600C74902906 @default.
- W2079774600 hasConceptScore W2079774600C97355855 @default.
- W2079774600 hasLocation W20797746001 @default.
- W2079774600 hasOpenAccess W2079774600 @default.
- W2079774600 hasPrimaryLocation W20797746001 @default.
- W2079774600 hasRelatedWork W1964692682 @default.
- W2079774600 hasRelatedWork W1986109513 @default.
- W2079774600 hasRelatedWork W1995559923 @default.
- W2079774600 hasRelatedWork W2010201075 @default.
- W2079774600 hasRelatedWork W2050942819 @default.
- W2079774600 hasRelatedWork W2058055342 @default.
- W2079774600 hasRelatedWork W2588445906 @default.
- W2079774600 hasRelatedWork W2899084033 @default.
- W2079774600 hasRelatedWork W3103114574 @default.
- W2079774600 hasRelatedWork W3145073591 @default.
- W2079774600 hasVolume "T65" @default.
- W2079774600 isParatext "false" @default.
- W2079774600 isRetracted "false" @default.
- W2079774600 magId "2079774600" @default.
- W2079774600 workType "article" @default.