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

    TY - JOUR

    T1 - Isolated and non-isolated dwarfs in terms of modified Newtonian dynamics

    AU - Gentile, G.

    AU - Angus, G. W.

    AU - Famaey, B.

    AU - Oh, S. H.

    AU - De Blok, W. J G

    PY - 2012

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