Isolated and non-isolated dwarfs in terms of modified Newtonian dynamics

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dc.contributor.authorGentile, G
dc.contributor.authorAngus, G W
dc.contributor.authorFamaey, B
dc.contributor.authorOh, S-H
dc.contributor.authorde Blok, W J G
dc.date.accessioned2021-10-08T11:01:07Z
dc.date.available2021-10-08T11:01:07Z
dc.date.issued2012
dc.description.abstractWithin the framework of modified Newtonian dynamics (MOND), we investigate the kinematics of two dwarf spiral galaxies belonging to very different environments, namely KK 246 in the Local Void and Holmberg II in the M 81 group. A mass model of the rotation curve of KK 246 is presented for the first time, and we show that its observed kinematics are consistent with MOND. We re-derive the outer rotation curve of Holmberg II, by modelling its HI data cube, and find that its inclination should be closer to face-on than previously derived. This implies that Holmberg II has a higher rotation velocity in its outer parts, which, although not very precisely constrained, is consistent with the MOND prediction.
dc.identifier.apacitationGentile, G., Angus, G. W., Famaey, B., Oh, S., & de Blok, W. J. G. (2012). Isolated and non-isolated dwarfs in terms of modified Newtonian dynamics. <i>Astronomy and Astrophysics</i>, 543(4), A47 - 177. http://hdl.handle.net/11427/35089en_ZA
dc.identifier.chicagocitationGentile, G, G W Angus, B Famaey, S-H Oh, and W J G de Blok "Isolated and non-isolated dwarfs in terms of modified Newtonian dynamics." <i>Astronomy and Astrophysics</i> 543, 4. (2012): A47 - 177. http://hdl.handle.net/11427/35089en_ZA
dc.identifier.citationGentile, G., Angus, G.W., Famaey, B., Oh, S. & de Blok, W.J.G. 2012. Isolated and non-isolated dwarfs in terms of modified Newtonian dynamics. <i>Astronomy and Astrophysics.</i> 543(4):A47 - 177. http://hdl.handle.net/11427/35089en_ZA
dc.identifier.issn0004-6361
dc.identifier.issn1432-0746
dc.identifier.ris TY - Journal Article AU - Gentile, G AU - Angus, G W AU - Famaey, B AU - Oh, S-H AU - de Blok, W J G AB - Within the framework of modified Newtonian dynamics (MOND), we investigate the kinematics of two dwarf spiral galaxies belonging to very different environments, namely KK 246 in the Local Void and Holmberg II in the M 81 group. A mass model of the rotation curve of KK 246 is presented for the first time, and we show that its observed kinematics are consistent with MOND. We re-derive the outer rotation curve of Holmberg II, by modelling its HI data cube, and find that its inclination should be closer to face-on than previously derived. This implies that Holmberg II has a higher rotation velocity in its outer parts, which, although not very precisely constrained, is consistent with the MOND prediction. DA - 2012 DB - OpenUCT DP - University of Cape Town IS - 4 J1 - Astronomy and Astrophysics LK - https://open.uct.ac.za PY - 2012 SM - 0004-6361 SM - 1432-0746 T1 - Isolated and non-isolated dwarfs in terms of modified Newtonian dynamics TI - Isolated and non-isolated dwarfs in terms of modified Newtonian dynamics UR - http://hdl.handle.net/11427/35089 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/35089
dc.identifier.vancouvercitationGentile G, Angus GW, Famaey B, Oh S, de Blok WJG. Isolated and non-isolated dwarfs in terms of modified Newtonian dynamics. Astronomy and Astrophysics. 2012;543(4):A47 - 177. http://hdl.handle.net/11427/35089.en_ZA
dc.language.isoeng
dc.publisher.departmentDepartment of Astronomy
dc.publisher.facultyFaculty of Science
dc.sourceAstronomy and Astrophysics
dc.source.journalissue4
dc.source.journalvolume543
dc.source.paginationA47 - 177
dc.source.urihttps://dx.doi.org/10.1051/0004-6361/201218997
dc.subject.otherPhysics and Astronomy
dc.subject.otherdark matter
dc.subject.othergalaxies: kinematics and dynamics
dc.subject.othergalaxies: dwarf
dc.subject.othergravitation
dc.subject.otherHOLMBERG-II
dc.subject.otherGALAXIES
dc.subject.otherDARK
dc.subject.otherMATTER
dc.subject.otherDISK
dc.subject.otherMASS
dc.subject.otherDENSITY
dc.titleIsolated and non-isolated dwarfs in terms of modified Newtonian dynamics
dc.typeJournal Article
uct.type.publicationResearch
uct.type.resourceJournal Article
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