Matches in SemOpenAlex for { <https://semopenalex.org/work/W3021931434> ?p ?o ?g. }
Showing items 1 to 88 of
88
with 100 items per page.
- W3021931434 endingPage "L43" @default.
- W3021931434 startingPage "L43" @default.
- W3021931434 abstract "The accuracy of the Hubble constant measured with extragalactic Cepheids depends on robust photometry and background estimation in the presence of stellar crowding. The conventional approach accounts for crowding by sampling backgrounds near Cepheids and assuming that they match those at their positions. We show a direct consequence of crowding by unresolved sources at Cepheid sites is a reduction in the fractional amplitudes of their light curves. We use a simple analytical expression to infer crowding directly from the light curve amplitudes of >200 Cepheids in three Type Ia supernovae hosts and NGC 4258 as observed by Hubble Space Telescope—the first near-infrared amplitudes measured beyond the Magellanic Clouds. Where local crowding is minimal, we find near-infrared amplitudes match Milky Way Cepheids at the same periods. At greater stellar densities we find that the empirically measured amplitudes match the values predicted (with no free parameters) from crowding assessed in the conventional way from local regions, confirming their accuracy for estimating the background at the Cepheid locations. Extragalactic Cepheid amplitudes would need to be ∼20% smaller than measured to indicate additional, unrecognized crowding as a primary source of the present discrepancy in H0. Rather, we find the amplitude data constrains a systematic mis-estimate of Cepheid backgrounds to be 0.029 ± 0.037 mag, more than 5× smaller than the size of the present ∼0.2 mag tension in H0. We conclude that systematic errors in Cepheid backgrounds do not provide a plausible resolution to the Hubble tension." @default.
- W3021931434 created "2020-05-13" @default.
- W3021931434 creator A5011553734 @default.
- W3021931434 creator A5017158718 @default.
- W3021931434 creator A5065192350 @default.
- W3021931434 creator A5074642266 @default.
- W3021931434 creator A5082469226 @default.
- W3021931434 date "2020-06-22" @default.
- W3021931434 modified "2023-10-18" @default.
- W3021931434 title "The Accuracy of the Hubble Constant Measurement Verified through Cepheid Amplitudes" @default.
- W3021931434 cites W1984394032 @default.
- W3021931434 cites W2022549569 @default.
- W3021931434 cites W2035118519 @default.
- W3021931434 cites W2059088679 @default.
- W3021931434 cites W2101985123 @default.
- W3021931434 cites W2106766431 @default.
- W3021931434 cites W2165084703 @default.
- W3021931434 cites W2959471610 @default.
- W3021931434 cites W2995863449 @default.
- W3021931434 cites W3101030129 @default.
- W3021931434 cites W3101168514 @default.
- W3021931434 cites W3103494697 @default.
- W3021931434 cites W3103648652 @default.
- W3021931434 cites W3104405069 @default.
- W3021931434 cites W3105560577 @default.
- W3021931434 cites W3106377282 @default.
- W3021931434 doi "https://doi.org/10.3847/2041-8213/ab9900" @default.
- W3021931434 hasPublicationYear "2020" @default.
- W3021931434 type Work @default.
- W3021931434 sameAs 3021931434 @default.
- W3021931434 citedByCount "32" @default.
- W3021931434 countsByYear W30219314342020 @default.
- W3021931434 countsByYear W30219314342021 @default.
- W3021931434 countsByYear W30219314342022 @default.
- W3021931434 countsByYear W30219314342023 @default.
- W3021931434 crossrefType "journal-article" @default.
- W3021931434 hasAuthorship W3021931434A5011553734 @default.
- W3021931434 hasAuthorship W3021931434A5017158718 @default.
- W3021931434 hasAuthorship W3021931434A5065192350 @default.
- W3021931434 hasAuthorship W3021931434A5074642266 @default.
- W3021931434 hasAuthorship W3021931434A5082469226 @default.
- W3021931434 hasBestOaLocation W30219314341 @default.
- W3021931434 hasConcept C103874350 @default.
- W3021931434 hasConcept C120665830 @default.
- W3021931434 hasConcept C121332964 @default.
- W3021931434 hasConcept C1276947 @default.
- W3021931434 hasConcept C130726490 @default.
- W3021931434 hasConcept C150739758 @default.
- W3021931434 hasConcept C150846664 @default.
- W3021931434 hasConcept C180205008 @default.
- W3021931434 hasConcept C33024259 @default.
- W3021931434 hasConcept C44870925 @default.
- W3021931434 hasConcept C68271606 @default.
- W3021931434 hasConcept C98444146 @default.
- W3021931434 hasConceptScore W3021931434C103874350 @default.
- W3021931434 hasConceptScore W3021931434C120665830 @default.
- W3021931434 hasConceptScore W3021931434C121332964 @default.
- W3021931434 hasConceptScore W3021931434C1276947 @default.
- W3021931434 hasConceptScore W3021931434C130726490 @default.
- W3021931434 hasConceptScore W3021931434C150739758 @default.
- W3021931434 hasConceptScore W3021931434C150846664 @default.
- W3021931434 hasConceptScore W3021931434C180205008 @default.
- W3021931434 hasConceptScore W3021931434C33024259 @default.
- W3021931434 hasConceptScore W3021931434C44870925 @default.
- W3021931434 hasConceptScore W3021931434C68271606 @default.
- W3021931434 hasConceptScore W3021931434C98444146 @default.
- W3021931434 hasIssue "2" @default.
- W3021931434 hasLocation W30219314341 @default.
- W3021931434 hasLocation W30219314342 @default.
- W3021931434 hasOpenAccess W3021931434 @default.
- W3021931434 hasPrimaryLocation W30219314341 @default.
- W3021931434 hasRelatedWork W1542039404 @default.
- W3021931434 hasRelatedWork W1591454977 @default.
- W3021931434 hasRelatedWork W2015335151 @default.
- W3021931434 hasRelatedWork W2079475437 @default.
- W3021931434 hasRelatedWork W2215085107 @default.
- W3021931434 hasRelatedWork W2807543756 @default.
- W3021931434 hasRelatedWork W3008750665 @default.
- W3021931434 hasRelatedWork W3100229823 @default.
- W3021931434 hasRelatedWork W3140439450 @default.
- W3021931434 hasRelatedWork W4236611804 @default.
- W3021931434 hasVolume "896" @default.
- W3021931434 isParatext "false" @default.
- W3021931434 isRetracted "false" @default.
- W3021931434 magId "3021931434" @default.
- W3021931434 workType "article" @default.