Matches in SemOpenAlex for { <https://semopenalex.org/work/W1966382893> ?p ?o ?g. }
- W1966382893 endingPage "194" @default.
- W1966382893 startingPage "178" @default.
- W1966382893 abstract "Gaseous halos of nine nearby galaxies (with redshifts cz < 6000 km s-1) were probed at large galactocentric radii using background quasars observed with the Hubble Space Telescope Goddard High Resolution Spectrograph and the Space Telescope Imaging Spectrograph. The projected quasar-galaxy separations range from 55 to 387 h kpc. Lyα absorption lines were successfully detected in the spectra of five quasars, at impact parameters of up to ~170 h kpc from the center of the nearby galaxy, and in each case at wavelengths consistent with the galaxy's redshift. Our observations include the lowest redshift Lyα lines detected to date. H I velocity fields were obtained at the Very Large Array for three of the galaxies in our sample (in one case the velocity field was available from the literature) to derive their rotation curves. When comparing the inner rotation curves of the galaxies with the velocity at large radius provided by the Lyα line, it is apparent that it is very difficult to explain the observed Lyα velocity as due to gas in an extended rotating disk. In most cases, one would need to invoke large warps in the outer gas disks and also thick gas disks to reconcile the observed velocities with the predicted ones. Indeed, in one case, the Lyα line velocity indicates, in fact, counterrotation with respect to the inner disk rotation. In light of these results, we conclude that in a typical galaxy there is no longer detectable atomic gas corotating in an extended disk at radii greater than 35α-1, where α-1 is the stellar disk exponential scale length. The cosmic web is the most likely origin for the detected Lyα lines. Our observations confirm the recent Bowen et al. correlation of equivalent widths with the local volume density of galaxies around the sight line, and the observed equivalent widths of the lines are consistent with expectations of the cosmic web." @default.
- W1966382893 created "2016-06-24" @default.
- W1966382893 creator A5022809506 @default.
- W1966382893 creator A5025113934 @default.
- W1966382893 creator A5035013927 @default.
- W1966382893 creator A5062744664 @default.
- W1966382893 creator A5088453908 @default.
- W1966382893 date "2005-01-01" @default.
- W1966382893 modified "2023-10-10" @default.
- W1966382893 title "Probing Halos of Galaxies at Very Large Radii Using Background QSOs" @default.
- W1966382893 cites W1487093425 @default.
- W1966382893 cites W1521158584 @default.
- W1966382893 cites W1534735367 @default.
- W1966382893 cites W1637945276 @default.
- W1966382893 cites W1963495721 @default.
- W1966382893 cites W1965799258 @default.
- W1966382893 cites W1968016153 @default.
- W1966382893 cites W1970699511 @default.
- W1966382893 cites W1977897349 @default.
- W1966382893 cites W1981124394 @default.
- W1966382893 cites W1981573587 @default.
- W1966382893 cites W1987752975 @default.
- W1966382893 cites W1996812467 @default.
- W1966382893 cites W2002640969 @default.
- W1966382893 cites W2003659318 @default.
- W1966382893 cites W2007319080 @default.
- W1966382893 cites W2011386802 @default.
- W1966382893 cites W2012220297 @default.
- W1966382893 cites W2015302325 @default.
- W1966382893 cites W2021545503 @default.
- W1966382893 cites W2032343026 @default.
- W1966382893 cites W2042394112 @default.
- W1966382893 cites W2046029142 @default.
- W1966382893 cites W2046934249 @default.
- W1966382893 cites W2053206342 @default.
- W1966382893 cites W2054147686 @default.
- W1966382893 cites W2062540759 @default.
- W1966382893 cites W2062783285 @default.
- W1966382893 cites W2069306984 @default.
- W1966382893 cites W2072602795 @default.
- W1966382893 cites W2072676365 @default.
- W1966382893 cites W2078977212 @default.
- W1966382893 cites W2086991468 @default.
- W1966382893 cites W2094176979 @default.
- W1966382893 cites W2111039248 @default.
- W1966382893 cites W2118024930 @default.
- W1966382893 cites W2129156375 @default.
- W1966382893 cites W2133843193 @default.
- W1966382893 cites W2493738155 @default.
- W1966382893 cites W2917424654 @default.
- W1966382893 cites W3099669979 @default.
- W1966382893 cites W3103877238 @default.
- W1966382893 cites W3104124211 @default.
- W1966382893 cites W3125276939 @default.
- W1966382893 cites W4251196556 @default.
- W1966382893 doi "https://doi.org/10.1086/425853" @default.
- W1966382893 hasPublicationYear "2005" @default.
- W1966382893 type Work @default.
- W1966382893 sameAs 1966382893 @default.
- W1966382893 citedByCount "17" @default.
- W1966382893 countsByYear W19663828932012 @default.
- W1966382893 countsByYear W19663828932016 @default.
- W1966382893 countsByYear W19663828932017 @default.
- W1966382893 countsByYear W19663828932020 @default.
- W1966382893 countsByYear W19663828932021 @default.
- W1966382893 countsByYear W19663828932022 @default.
- W1966382893 crossrefType "journal-article" @default.
- W1966382893 hasAuthorship W1966382893A5022809506 @default.
- W1966382893 hasAuthorship W1966382893A5025113934 @default.
- W1966382893 hasAuthorship W1966382893A5035013927 @default.
- W1966382893 hasAuthorship W1966382893A5062744664 @default.
- W1966382893 hasAuthorship W1966382893A5088453908 @default.
- W1966382893 hasBestOaLocation W19663828931 @default.
- W1966382893 hasConcept C121332964 @default.
- W1966382893 hasConcept C1276947 @default.
- W1966382893 hasConcept C135041427 @default.
- W1966382893 hasConcept C178635117 @default.
- W1966382893 hasConcept C184665706 @default.
- W1966382893 hasConcept C206564472 @default.
- W1966382893 hasConcept C2776968204 @default.
- W1966382893 hasConcept C33024259 @default.
- W1966382893 hasConcept C38652104 @default.
- W1966382893 hasConcept C41008148 @default.
- W1966382893 hasConcept C44870925 @default.
- W1966382893 hasConcept C98444146 @default.
- W1966382893 hasConceptScore W1966382893C121332964 @default.
- W1966382893 hasConceptScore W1966382893C1276947 @default.
- W1966382893 hasConceptScore W1966382893C135041427 @default.
- W1966382893 hasConceptScore W1966382893C178635117 @default.
- W1966382893 hasConceptScore W1966382893C184665706 @default.
- W1966382893 hasConceptScore W1966382893C206564472 @default.
- W1966382893 hasConceptScore W1966382893C2776968204 @default.
- W1966382893 hasConceptScore W1966382893C33024259 @default.
- W1966382893 hasConceptScore W1966382893C38652104 @default.
- W1966382893 hasConceptScore W1966382893C41008148 @default.
- W1966382893 hasConceptScore W1966382893C44870925 @default.
- W1966382893 hasConceptScore W1966382893C98444146 @default.
- W1966382893 hasIssue "1" @default.