2012A&A...543A..47G


C.D.S. - SIMBAD4 rel 1.7 - 2019.12.12CET01:59:42

2012A&A...543A..47G - Astronomy and Astrophysics, volume 543A, 47-47 (2012/7-1)

Isolated and non-isolated dwarfs in terms of modified newtonian dynamics.

GENTILE G., ANGUS G.W., FAMAEY B., OH S.-H. and DE BLOK W.J.G.

Abstract (from CDS):

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.

Abstract Copyright:

Journal keyword(s): galaxies: kinematics and dynamics - dark matter - galaxies: dwarf - gravitation

Simbad objects: 8

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Number of rows : 8

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 NGC 2403 AGN 07 36 51.396 +65 36 09.17 9.31 8.84 8.38 8.19   ~ 1573 1
2 UGC 4305 IG 08 19 04.9878269182 +70 43 13.025604473 12.06 11.72 11.39 11.11   ~ 672 2
3 NAME M 81-82 Group GrG 09 55 +69.1           ~ 616 0
4 NGC 3198 EmG 10 19 54.990 +45 32 58.88 10.83 10.87 10.33     ~ 799 1
5 NGC 3741 G 11 36 05.754 +45 17 02.96 15.01 14.55 14.23 14.06   ~ 183 0
6 UGC 8024 GiC 12 54 05.248 +27 08 58.67 14.37 14.23 13.95 13.84   ~ 522 1
7 NAME Local Void vid 18 38 +18.0           ~ 147 0
8 ESO 461-36 G 20 03 57.4 -31 40 53   17.06   16.2 16.1 ~ 58 1

    Equat.    Gal    SGal    Ecl

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2019.12.12-01:59:42

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