Matches in SemOpenAlex for { <https://semopenalex.org/work/W3199558720> ?p ?o ?g. }
Showing items 1 to 68 of
68
with 100 items per page.
- W3199558720 abstract "Stellar models applied to large stellar surveys of the Milky Way need to be properly tested against a sample of stars with highly reliable fundamental stellar parameters. We have established a program aiming to deliver such a sample. We present new fundamental stellar parameters of nine dwarfs that will be used as benchmarks for large stellar surveys. One of these stars is the solar-twin 18Sco, which is one of the Gaia-ESO benchmarks. The goal is to reach a precision of 1% in Teff. This precision is important for accurate determinations of the full set of fundamental parameters and abundances of stars observed by the surveys. We observed HD131156 (xiBoo), HD146233 (18Sco), HD152391, HD173701, HD185395 (thetaCyg), HD186408 (16CygA), HD186427 (16CygB), HD190360 and HD207978 (15Peg) using the high angular resolution optical interferometric instrument PAVO/CHARA. We derived limb-darkening corrections from 3D model atmospheres and determined Teff directly from the Stefan-Boltzmann relation, with an iterative procedure to interpolate over tables of bolometric corrections. Surface gravities were estimated from comparisons to Dartmouth stellar evolution model tracks. We collected spectroscopic observations from the ELODIE spectrograph and estimated metallicities ([Fe/H]) from a 1D non-local thermodynamic equilibrium (NLTE) abundance analyses of unblended lines of neutral and singly ionized iron. For eight of the nine stars, we measure the Teff less than 1%, and for one star better than 2%. We determined the median uncertainties in logg and Fe/H as 0.015dex and 0.05dex, respectively. This study presents updated fundamental stellar parameters of nine dwarfs that can be used as a new set of benchmarks. All parameters were based on consistently combining interferometric observations, 3D limb-darkening modelling and spectroscopic analysis. The next paper will extend our sample to metal-rich giants." @default.
- W3199558720 created "2021-09-27" @default.
- W3199558720 creator A5014140391 @default.
- W3199558720 creator A5035303223 @default.
- W3199558720 creator A5058886443 @default.
- W3199558720 creator A5074919764 @default.
- W3199558720 creator A5086796344 @default.
- W3199558720 creator A5088684036 @default.
- W3199558720 date "2021-09-13" @default.
- W3199558720 modified "2023-09-26" @default.
- W3199558720 title "Fundamental stellar parameters of benchmark stars from CHARA interferometry -- II. Dwarf stars" @default.
- W3199558720 cites W2319555001 @default.
- W3199558720 hasPublicationYear "2021" @default.
- W3199558720 type Work @default.
- W3199558720 sameAs 3199558720 @default.
- W3199558720 citedByCount "0" @default.
- W3199558720 crossrefType "posted-content" @default.
- W3199558720 hasAuthorship W3199558720A5014140391 @default.
- W3199558720 hasAuthorship W3199558720A5035303223 @default.
- W3199558720 hasAuthorship W3199558720A5058886443 @default.
- W3199558720 hasAuthorship W3199558720A5074919764 @default.
- W3199558720 hasAuthorship W3199558720A5086796344 @default.
- W3199558720 hasAuthorship W3199558720A5088684036 @default.
- W3199558720 hasConcept C101638190 @default.
- W3199558720 hasConcept C121332964 @default.
- W3199558720 hasConcept C1276947 @default.
- W3199558720 hasConcept C13565188 @default.
- W3199558720 hasConcept C150846664 @default.
- W3199558720 hasConcept C2778861254 @default.
- W3199558720 hasConcept C44870925 @default.
- W3199558720 hasConcept C4839761 @default.
- W3199558720 hasConcept C555520305 @default.
- W3199558720 hasConceptScore W3199558720C101638190 @default.
- W3199558720 hasConceptScore W3199558720C121332964 @default.
- W3199558720 hasConceptScore W3199558720C1276947 @default.
- W3199558720 hasConceptScore W3199558720C13565188 @default.
- W3199558720 hasConceptScore W3199558720C150846664 @default.
- W3199558720 hasConceptScore W3199558720C2778861254 @default.
- W3199558720 hasConceptScore W3199558720C44870925 @default.
- W3199558720 hasConceptScore W3199558720C4839761 @default.
- W3199558720 hasConceptScore W3199558720C555520305 @default.
- W3199558720 hasLocation W31995587201 @default.
- W3199558720 hasOpenAccess W3199558720 @default.
- W3199558720 hasPrimaryLocation W31995587201 @default.
- W3199558720 hasRelatedWork W2063600248 @default.
- W3199558720 hasRelatedWork W2065022276 @default.
- W3199558720 hasRelatedWork W2104991455 @default.
- W3199558720 hasRelatedWork W2108116496 @default.
- W3199558720 hasRelatedWork W2166113886 @default.
- W3199558720 hasRelatedWork W2407982734 @default.
- W3199558720 hasRelatedWork W2977596352 @default.
- W3199558720 hasRelatedWork W3098019590 @default.
- W3199558720 hasRelatedWork W3098655768 @default.
- W3199558720 hasRelatedWork W3100845448 @default.
- W3199558720 hasRelatedWork W3101015041 @default.
- W3199558720 hasRelatedWork W3101724715 @default.
- W3199558720 hasRelatedWork W3103210132 @default.
- W3199558720 hasRelatedWork W3105222414 @default.
- W3199558720 hasRelatedWork W3105378271 @default.
- W3199558720 hasRelatedWork W3105807026 @default.
- W3199558720 hasRelatedWork W3158072073 @default.
- W3199558720 hasRelatedWork W3161012862 @default.
- W3199558720 hasRelatedWork W3210443996 @default.
- W3199558720 hasRelatedWork W2087945227 @default.
- W3199558720 isParatext "false" @default.
- W3199558720 isRetracted "false" @default.
- W3199558720 magId "3199558720" @default.
- W3199558720 workType "article" @default.