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dc.contributor.authorBrinks, E.
dc.contributor.authorBurton, W. B.
dc.date.accessioned2012-03-20T16:00:41Z
dc.date.available2012-03-20T16:00:41Z
dc.date.issued1984-12-01
dc.identifier.citationBrinks , E & Burton , W B 1984 , ' A high resolution hydrogen line survey of Messier 31. II : The warped flaring hydrogen layer ' , Astronomy and Astrophysics , vol. 141 , no. 1 , pp. 195-214 .
dc.identifier.issn0004-6361
dc.identifier.otherPURE: 652469
dc.identifier.otherPURE UUID: 791e7c4f-0de8-4c1f-b4f8-10facfd097cb
dc.identifier.otherBibtex: urn:b9409114a4cc77ba3588e65c2bea2cb7
dc.identifier.otherORCID: /0000-0002-7758-9699/work/30407959
dc.identifier.urihttp://hdl.handle.net/2299/7999
dc.description.abstractSome of the global aspects of the H I distribution in M31 are discussed on the basis of the high-resolution survey of the 21-cm line made with the Westerbork Synthesis Radio Telescope by Brinks and Shane (1984). The morphology of the H I kinematics and structure in M31 can be modelled by a flat disk extending over the region at R < 16 kpc, and, at larger radii, a flaring warped gas distribution. The scale height of the gas in the warped part of M31 increases approximately linearly with radius to a maximum scale height of about 1.7 kpc. The maximum deviation of the warp from the plane of the extended inner disk is about 3.8 kpc. These and other parameters of the warp in M31 are similar to those in our Galaxy. The H I mass in the disk is about 2.4×109M_sun;; the H I mass in the warp is about 1.5×109M_sun;. As in our Galaxy, the flaring gas layer and the rather flat rotation curve in the regions of M31 require that the total mass there resides in a halo. The 2π-symmetry and the general regularity of the warp in M31 argue against it being a consequence of interaction with the small elliptical companion M32.en
dc.format.extent20
dc.language.isoeng
dc.relation.ispartofAstronomy and Astrophysics
dc.subjectDISK GALAXIES, GALACTIC STRUCTURE, GALAXIES, H LINES, RADIO SPECTRA, GAS DENSITY, GAS TEMPERATURE, HIGH RESOLUTION, WARPAGE
dc.titleA high resolution hydrogen line survey of Messier 31. II : The warped flaring hydrogen layeren
dc.contributor.institutionSchool of Physics, Astronomy and Mathematics
dc.contributor.institutionScience & Technology Research Institute
dc.contributor.institutionCentre for Astrophysics Research
dc.description.statusPeer reviewed
dc.relation.schoolSchool of Physics, Astronomy and Mathematics
dcterms.dateAccepted1984-12-01
rioxxterms.typeJournal Article/Review
herts.preservation.rarelyaccessedtrue


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