FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2997394160> ?p ?o ?g. }

• W2997394160 abstract "Analysis of late O-type stars observed in the Large Magellanic Cloud (LMC) by the VLT-FLAMES Tarantula Survey (VFTS) revealed a discrepancy between the physical properties estimated from model-atmosphere analysis and those expected from their morphological classifications. Here we revisit the analysis of 32 of these puzzling objects using new hydrogen-helium-silicon FASTWIND models and a different fitting approach to re-evaluate their physical properties. Our new analysis confirms that these stars indeed have properties that are typical of late O-type dwarfs. We also present the first estimates of silicon abundances for O-type stars in the 30 Dor clusters NGC 2060 and NGC 2070, with a weighted mean abundance for our sample of 7.05 +/- 0.03. Our values are about 0.20 dex lower than those previously derived for B-type stars in the LMC clusters N 11 and NGC 2004 using TLUSTY models. Various possibilities (e.g. differences in the analysis methods, effects of microturbulence, and real differences between stars in different clusters) were considered to account for these results. We also used our grid of FASTWIND models to reassess the impact of using the Galactic classification criteria for late O-type stars in the LMC by scrutinising their sensitivity to different stellar properties. At the cool edge of the O star regime the HeII 4686/HeI 4713 ratio used to assign luminosity class for Galactic stars can mimic giants or bright giants in the LMC, even for objects with high gravities (log_g > 4.0 dex). We argue that this line ratio is not a reliable luminosity diagnostic for late O-type stars in the LMC, and that the SiIV 4989/HeI4026 ratio is more robust for these types." @default.
• W2997394160 created "2020-01-10" @default.
• W2997394160 creator A5016667068 @default.
• W2997394160 creator A5021030288 @default.
• W2997394160 creator A5022895605 @default.
• W2997394160 creator A5025696341 @default.
• W2997394160 creator A5033311951 @default.
• W2997394160 creator A5033947343 @default.
• W2997394160 creator A5059796153 @default.
• W2997394160 creator A5061860751 @default.
• W2997394160 creator A5072845141 @default.
• W2997394160 date "2020-01-06" @default.
• W2997394160 modified "2023-09-30" @default.
• W2997394160 title "The VLT-FLAMES Tarantula Survey XXXII. Low-luminosity late O-type stars -- classification, main physical parameters, and silicon abundances" @default.
• W2997394160 cites W1495978751 @default.
• W2997394160 cites W1967739728 @default.
• W2997394160 cites W1983806448 @default.
• W2997394160 cites W1987079650 @default.
• W2997394160 cites W1987330298 @default.
• W2997394160 cites W1989500410 @default.
• W2997394160 cites W1994397915 @default.
• W2997394160 cites W2000771032 @default.
• W2997394160 cites W2019613714 @default.
• W2997394160 cites W2023891552 @default.
• W2997394160 cites W2024160673 @default.
• W2997394160 cites W2024840617 @default.
• W2997394160 cites W2025107042 @default.
• W2997394160 cites W2025507895 @default.
• W2997394160 cites W2027415764 @default.
• W2997394160 cites W2035624427 @default.
• W2997394160 cites W2036892734 @default.
• W2997394160 cites W2037216118 @default.
• W2997394160 cites W2041151710 @default.
• W2997394160 cites W2049117680 @default.
• W2997394160 cites W2062150455 @default.
• W2997394160 cites W2067843669 @default.
• W2997394160 cites W2081920914 @default.
• W2997394160 cites W2099071628 @default.
• W2997394160 cites W2101758936 @default.
• W2997394160 cites W2102521257 @default.
• W2997394160 cites W2105463078 @default.
• W2997394160 cites W2116428272 @default.
• W2997394160 cites W2117169473 @default.
• W2997394160 cites W2121128861 @default.
• W2997394160 cites W2136031239 @default.
• W2997394160 cites W2138734559 @default.
• W2997394160 cites W2140409466 @default.
• W2997394160 cites W2152242821 @default.
• W2997394160 cites W2171038474 @default.
• W2997394160 cites W2517029419 @default.
• W2997394160 cites W2551496748 @default.
• W2997394160 cites W2591145412 @default.
• W2997394160 cites W2781649930 @default.
• W2997394160 cites W2788088961 @default.
• W2997394160 cites W2899497983 @default.
• W2997394160 cites W2903986102 @default.
• W2997394160 cites W3098637551 @default.
• W2997394160 cites W3099375806 @default.
• W2997394160 cites W3099406647 @default.
• W2997394160 cites W3100106785 @default.
• W2997394160 cites W3101117778 @default.
• W2997394160 cites W3103616567 @default.
• W2997394160 cites W3105588270 @default.
• W2997394160 cites W3106314567 @default.
• W2997394160 cites W3106513877 @default.
• W2997394160 cites W3121246643 @default.
• W2997394160 cites W3122200469 @default.
• W2997394160 cites W3124400177 @default.
• W2997394160 cites W2033856236 @default.
• W2997394160 hasPublicationYear "2020" @default.
• W2997394160 type Work @default.
• W2997394160 sameAs 2997394160 @default.
• W2997394160 citedByCount "0" @default.
• W2997394160 crossrefType "journal-article" @default.
• W2997394160 hasAuthorship W2997394160A5016667068 @default.
• W2997394160 hasAuthorship W2997394160A5021030288 @default.
• W2997394160 hasAuthorship W2997394160A5022895605 @default.
• W2997394160 hasAuthorship W2997394160A5025696341 @default.
• W2997394160 hasAuthorship W2997394160A5033311951 @default.
• W2997394160 hasAuthorship W2997394160A5033947343 @default.
• W2997394160 hasAuthorship W2997394160A5059796153 @default.
• W2997394160 hasAuthorship W2997394160A5061860751 @default.
• W2997394160 hasAuthorship W2997394160A5072845141 @default.
• W2997394160 hasConcept C121332964 @default.
• W2997394160 hasConcept C12287442 @default.
• W2997394160 hasConcept C1276947 @default.
• W2997394160 hasConcept C150846664 @default.
• W2997394160 hasConcept C2776259265 @default.
• W2997394160 hasConcept C2781010120 @default.
• W2997394160 hasConcept C44870925 @default.
• W2997394160 hasConcept C98444146 @default.
• W2997394160 hasConceptScore W2997394160C121332964 @default.
• W2997394160 hasConceptScore W2997394160C12287442 @default.
• W2997394160 hasConceptScore W2997394160C1276947 @default.
• W2997394160 hasConceptScore W2997394160C150846664 @default.
• W2997394160 hasConceptScore W2997394160C2776259265 @default.
• W2997394160 hasConceptScore W2997394160C2781010120 @default.
• W2997394160 hasConceptScore W2997394160C44870925 @default.
• W2997394160 hasConceptScore W2997394160C98444146 @default.
• W2997394160 hasOpenAccess W2997394160 @default.

• next