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dc.contributor.authordel Rio, M.S.
dc.contributor.authorBrinks, E.
dc.contributor.authorCarral, P.
dc.contributor.authorCepa, J.
dc.date.accessioned2008-01-30T10:45:20Z
dc.date.available2008-01-30T10:45:20Z
dc.date.issued1999
dc.identifier.citationdel Rio , M S , Brinks , E , Carral , P & Cepa , J 1999 , HI Observations of Early-Type Galaxies . in In: Procs of Star Formation in Early Type Galaxies, ASP Conference Series 163 . Astronomical Society of the Pacific , pp. 95-101 .
dc.identifier.isbn1-886733-84-8
dc.identifier.otherPURE: 160921
dc.identifier.otherPURE UUID: 08232603-13d3-48b7-862c-db3192ec43fb
dc.identifier.otherdspace: 2299/1501
dc.identifier.otherORCID: /0000-0002-7758-9699/work/30407920
dc.identifier.urihttp://hdl.handle.net/2299/1501
dc.description.abstractWe present high resolution (15") HI observations of the S0 galaxy NGC 404. We derive an HI mass of MHi = 6.7 x 10???, in good agreement with previous measurements. The HI is distributed in a broad annulus (a doughnut) and extends out to a diameter of 9', well beyond the optical diameter of 6'. The velocity field is regular and shows, surprisingly, a declining rotation curve. This decline is purely Keplerian, strongly suggesting that all the mass is contained within the inner 200".en
dc.language.isoeng
dc.publisherAstronomical Society of the Pacific
dc.relation.ispartofIn: Procs of Star Formation in Early Type Galaxies, ASP Conference Series 163
dc.titleHI Observations of Early-Type Galaxiesen
dc.contributor.institutionSchool of Physics, Astronomy and Mathematics
dc.contributor.institutionSchool of Physics, Engineering & Computer Science
dc.contributor.institutionDepartment of Physics, Astronomy and Mathematics
dc.contributor.institutionCentre for Astrophysics Research
rioxxterms.typeOther
herts.preservation.rarelyaccessedtrue


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