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

G. Gentile, G. W. Angus, B. Famaey, S. H. Oh, W. J G De Blok

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

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.

Original languageEnglish
Article numberA47
JournalAstronomy and Astrophysics
Volume543
DOIs
Publication statusPublished - 2012

Fingerprint

kinematics
curves
dwarf galaxies
spiral galaxies
void
inclination
voids
prediction
predictions
modeling

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Gentile, G. ; Angus, G. W. ; Famaey, B. ; Oh, S. H. ; De Blok, W. J G. / Isolated and non-isolated dwarfs in terms of modified Newtonian dynamics. In: Astronomy and Astrophysics. 2012 ; Vol. 543.
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Isolated and non-isolated dwarfs in terms of modified Newtonian dynamics. / Gentile, G.; Angus, G. W.; Famaey, B.; Oh, S. H.; De Blok, W. J G.

In: Astronomy and Astrophysics, Vol. 543, A47, 2012.

Research output: Contribution to journalArticle

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AU - Gentile, G.

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AU - Oh, S. H.

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