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
Y1 - 2012
N2 - 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.
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.
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U2 - 10.1051/0004-6361/201218997
DO - 10.1051/0004-6361/201218997
M3 - Article
AN - SCOPUS:84862752749
SN - 0004-6361
VL - 543
JO - Astronomy and Astrophysics
JF - Astronomy and Astrophysics
M1 - A47
ER -