Matches in SemOpenAlex for { <https://semopenalex.org/work/W2027834512> ?p ?o ?g. }
Showing items 1 to 78 of
78
with 100 items per page.
- W2027834512 endingPage "134" @default.
- W2027834512 startingPage "125" @default.
- W2027834512 abstract "Combining data from the Dominion Radio Astrophysical Observatory (DRAO) interferometer array with previous Very Large Array (VLA) observations, it was possible to recover all the single-dish flux of DDO 154, of which ~⅓ was missing from the VLA data. The missing flux was found to be in an extended low surface brightness component in the outer parts of this dwarf irregular galaxy. In the new combined data, the H I disk can be traced out to ~6 optical radii (RHo) or 21 optical scale lengths (α-1) at a level of ~1.0 × 1019 cm-2. Even at that level, there is no sign of the abrupt truncation seen in most other galaxies, especially on the receding side. A total H I mass of 2.5 × 108 M☉ is derived, which gives an (MH I/LB) 8, making DDO 154 one of the most gas-rich galaxies known. The recovered H I flux makes it possible to extend the rotation curve by more than 33% in radii with the result that the rotation curve of DDO 154 is one of the most extensive rotation curves ever derived relative to the optical size of the galaxy. The new combined data confirm that the rotation curve is declining in the outer parts. Detailed mass models show that we may have reached the edge of the mass distribution for this galaxy, which would allow, for the first time, an estimate of the total mass and the total extent of a galaxy. For DDO 154, this gives an estimated total mass of Mtot 3.0 × 109 M☉ and an upper limit to the radial extent of Rtot ≤ 8 kpc." @default.
- W2027834512 created "2016-06-24" @default.
- W2027834512 creator A5022809506 @default.
- W2027834512 creator A5066974141 @default.
- W2027834512 date "1998-10-10" @default.
- W2027834512 modified "2023-09-23" @default.
- W2027834512 title "The “Total” Mass of DDO 154" @default.
- W2027834512 cites W1627301093 @default.
- W2027834512 cites W1828024086 @default.
- W2027834512 cites W1966428038 @default.
- W2027834512 cites W1970699511 @default.
- W2027834512 cites W1976967662 @default.
- W2027834512 cites W1981372704 @default.
- W2027834512 cites W1996622609 @default.
- W2027834512 cites W2006457604 @default.
- W2027834512 cites W2008856417 @default.
- W2027834512 cites W2010642725 @default.
- W2027834512 cites W2022023637 @default.
- W2027834512 cites W2022714213 @default.
- W2027834512 cites W2049574020 @default.
- W2027834512 cites W2054381679 @default.
- W2027834512 cites W2067007083 @default.
- W2027834512 cites W2075667714 @default.
- W2027834512 cites W2093950096 @default.
- W2027834512 cites W2099821897 @default.
- W2027834512 cites W2118024930 @default.
- W2027834512 cites W2144688498 @default.
- W2027834512 cites W2156481540 @default.
- W2027834512 cites W2166344513 @default.
- W2027834512 cites W4229934221 @default.
- W2027834512 doi "https://doi.org/10.1086/306227" @default.
- W2027834512 hasPublicationYear "1998" @default.
- W2027834512 type Work @default.
- W2027834512 sameAs 2027834512 @default.
- W2027834512 citedByCount "111" @default.
- W2027834512 countsByYear W20278345122012 @default.
- W2027834512 countsByYear W20278345122013 @default.
- W2027834512 countsByYear W20278345122014 @default.
- W2027834512 countsByYear W20278345122015 @default.
- W2027834512 countsByYear W20278345122016 @default.
- W2027834512 countsByYear W20278345122017 @default.
- W2027834512 countsByYear W20278345122018 @default.
- W2027834512 countsByYear W20278345122019 @default.
- W2027834512 countsByYear W20278345122020 @default.
- W2027834512 countsByYear W20278345122021 @default.
- W2027834512 countsByYear W20278345122022 @default.
- W2027834512 crossrefType "journal-article" @default.
- W2027834512 hasAuthorship W2027834512A5022809506 @default.
- W2027834512 hasAuthorship W2027834512A5066974141 @default.
- W2027834512 hasConcept C121332964 @default.
- W2027834512 hasConcept C1276947 @default.
- W2027834512 hasConcept C44870925 @default.
- W2027834512 hasConcept C87355193 @default.
- W2027834512 hasConceptScore W2027834512C121332964 @default.
- W2027834512 hasConceptScore W2027834512C1276947 @default.
- W2027834512 hasConceptScore W2027834512C44870925 @default.
- W2027834512 hasConceptScore W2027834512C87355193 @default.
- W2027834512 hasIssue "1" @default.
- W2027834512 hasLocation W20278345121 @default.
- W2027834512 hasOpenAccess W2027834512 @default.
- W2027834512 hasPrimaryLocation W20278345121 @default.
- W2027834512 hasRelatedWork W1989693711 @default.
- W2027834512 hasRelatedWork W1994702306 @default.
- W2027834512 hasRelatedWork W2010201075 @default.
- W2027834512 hasRelatedWork W2029125027 @default.
- W2027834512 hasRelatedWork W2047375925 @default.
- W2027834512 hasRelatedWork W2050942819 @default.
- W2027834512 hasRelatedWork W2069375389 @default.
- W2027834512 hasRelatedWork W3103114574 @default.
- W2027834512 hasRelatedWork W3106428885 @default.
- W2027834512 hasRelatedWork W3145073591 @default.
- W2027834512 hasVolume "506" @default.
- W2027834512 isParatext "false" @default.
- W2027834512 isRetracted "false" @default.
- W2027834512 magId "2027834512" @default.
- W2027834512 workType "article" @default.