2017ApJ...835..233A

Query : 2017ApJ...835..233A

2017ApJ...835..233A - Astrophys. J., 835, 233-233 (2017/February-1)

MOND calculations of bulk dispersions and radial dispersion profiles of Milky Way and Andromeda dwarf spheroidal galaxies.

ALEXANDER S.G., WALENTOSKY M.J., MESSINGER J., STARON A., BLANKARTZ B. and CLARK T.

Abstract (from CDS):

We present a new computational method for calculating the motion of stars in a dwarf spheroidal galaxy (dSph) that can use either Newtonian gravity or Modified Newtonian Dynamics (MOND). In our model, we explicitly calculate the motion of several thousand stars in a spherically symmetric gravitational potential, and we statistically obtain both the line-of-sight bulk velocity dispersion and dispersion profile. Our results for MOND calculated bulk dispersions for Local Group dSph's agree well with previous calculations and observations. Our MOND calculated dispersion profiles are compared with the observations of Walker et al. for Milky Way dSph's, and we present calculated dispersion profiles for a selection of Andromeda dSph's.

Abstract Copyright: © 2017. The American Astronomical Society. All rights reserved.

Journal keyword(s): dark matter - galaxies: kinematics and dynamics - Local Group - Local Group

Simbad objects: 28

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Number of rows : 28
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 And XIX G 00 19 32.10 +35 02 37.1     15.6     ~ 168 0
2 NAME Andromeda XXV G 00 30 08.9 +46 51 07     14.8     ~ 120 0
3 NAME Andromeda III G 00 35 33.8 +36 29 52     14.4     ~ 309 0
4 M 31 AGN 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 13622 1
5 NAME Andromeda I G 00 45 39.8 +38 02 28   13.9 12.7     ~ 355 0
6 NAME Andromeda XIV G 00 51 35.0 +29 41 49     15.9     ~ 132 0
7 NAME Andromeda IX G 00 52 53.0 +43 11 45     16.3     ~ 176 1
8 NAME Pisces V G 00 59 29.8 +32 22 36     14.4     ~ 149 0
9 NAME Sculptor Dwarf Galaxy G 01 00 09.4 -33 42 32   9.79 8.6 8.81   ~ 1498 4
10 NAME Andromeda X G 01 06 33.70 +44 48 15.8     16.6     ~ 125 1
11 NAME Andromeda XV G 01 14 18.7 +38 07 03     14.6     ~ 123 0
12 NAME Andromeda II G 01 16 29.8 +33 25 09     11.7     ~ 402 0
13 NAME Andromeda XXII G 01 27 40.0 +28 05 25     18.0     ~ 95 0
14 NAME Andromeda XXIII G 01 29 21.8 +38 43 08     14.2     ~ 88 0
15 MCG-06-07-001 G 02 39 59.3 -34 26 57   9.02 7.4     ~ 1894 1
16 ESO 206-20A G 06 41 36.7 -50 57 58   22.14 11.0 19.47   ~ 1190 0
17 Z 64-73 G 10 08 28.12 +12 18 23.4   11.3 10.0     ~ 1284 1
18 NAME Sextans dSph LSB 10 13 02.9 -01 36 53   12 10.4     ~ 921 0
19 NAME UMa Region reg 11 00 +50.0           ~ 333 0
20 Z 126-111 G 11 13 28.13 +22 09 10.1   12.9 12.0     ~ 899 0
21 Z 318-18 G 15 09 08.0 +67 13 21   13.60 10.6     ~ 1459 0
22 Z 300-12 G 17 20 14.335 +57 55 16.39   12.40 10.6     ~ 1428 1
23 NAME Andromeda XXVIII G 22 32 41.20 +31 12 58.2     15.6     ~ 88 0
24 NAME Andromeda VII GiG 23 26 31.0 +50 40 33   13.6 11.8     ~ 222 1
25 NAME Peg dSph GiG 23 51 46.3 +24 34 57   14.5 13.2     ~ 250 2
26 NAME Andromeda XXI G 23 54 47.7 +42 28 15     14.8     ~ 117 0
27 NAME Andromeda XXIX G 23 58 55.6 +30 45 20     16.0     ~ 61 0
28 NAME Local Group GrG ~ ~           ~ 9325 0

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