2021AJ....162..202M

Query : 2021AJ....162..202M

2021AJ....162..202M - Astron. J., 162, 202-202 (2021/November-0)

The baryonic Tully-Fisher relation in the Local Group and the equivalent circular velocity of pressure-supported dwarfs.

McGAUGH S.S., LELLI F., SCHOMBERT J.M., LI P., VISGAITIS T., PARKER K.S. and PAWLOWSKI M.S.

Abstract (from CDS):

We explore the baryonic Tully-Fisher relation in the Local Group. Rotationally-supported Local Group galaxies adhere precisely to the relation defined by more distant galaxies. For pressure-supported dwarf galaxies, we determine the scaling factor βc that relates their observed velocity dispersion to the equivalent circular velocity of rotationally-supported galaxies of the same mass such that Vo = βcσ*. For a typical mass-to-light ratio U* = 2 M☉/L☉ in the V band, we find that βc = 2. More generally, logβc=0.25logΥ*+0.226. This provides a common kinematic scale relating pressure and rotationally-supported dwarf galaxies.

Abstract Copyright: © 2021. The American Astronomical Society. All rights reserved.

Journal keyword(s): Galaxies - Local Group - Orbital motion - Scaling relations

Simbad objects: 42

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Number of rows : 42
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 MCG-03-01-015 G 00 01 57.9 -15 27 50   11.50 11.10 10.93   ~ 782 2
2 NGC 55 rG 00 14 53.602 -39 11 47.86 8.54 8.58 7.87 7.84   ~ 828 2
3 IC 10 rG 00 20 17.33520 +59 18 13.6480   13.6 9.5     ~ 1185 1
4 NAME Cetus Dwarf Galaxy G 00 26 10.8 -11 03 14     13.2     ~ 257 0
5 NAME Magellanic Stream HVC 00 32 -30.0           ~ 1079 1
6 NGC 147 GiG 00 33 12.120 +48 30 31.46   12.0 9.5     ~ 720 1
7 NAME Cassiopeia III G 00 35 59.4 +51 33 35           ~ 59 0
8 NGC 185 Sy2 00 38 57.9400026024 +48 20 15.035874648   9.10 9.2     ~ 840 1
9 M 110 GiG 00 40 22.0572349992 +41 41 07.507220136   8.92 8.07     ~ 1370 1
10 M 32 GiG 00 42 41.82480 +40 51 54.6120 9.51 9.03 8.08     ~ 2236 2
11 M 31 AGN 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 13622 1
12 NAME Andromeda I G 00 45 39.8 +38 02 28   13.9 12.7     ~ 355 0
13 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 12317 1
14 NAME Pisces V G 00 59 29.8 +32 22 36     14.4     ~ 149 0
15 NAME Sculptor Dwarf Galaxy G 01 00 09.4 -33 42 32   9.79 8.6 8.81   ~ 1498 4
16 NAME Pisces I G 01 03 55.0 +21 53 06   16.18 14.3     ~ 404 0
17 IC 1613 GiC 01 04 48.4071 +02 07 10.185   10.42 10.01 9.77   ~ 1316 2
18 NAME Andromeda XV G 01 14 18.7 +38 07 03     14.6     ~ 123 0
19 NAME Andromeda II G 01 16 29.8 +33 25 09     11.7     ~ 402 0
20 NAME Andromeda XXIII G 01 29 21.8 +38 43 08     14.2     ~ 88 0
21 M 33 GiG 01 33 50.8965749232 +30 39 36.630403128 6.17 6.27 5.72     ~ 6226 1
22 MCG-06-07-001 G 02 39 59.3 -34 26 57   9.02 7.4     ~ 1894 1
23 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
24 NAME Leo T G 09 34 53.4 +17 03 05     15.1     ~ 434 0
25 NGC 3109 AG? 10 03 06.877 -26 09 34.46 11.10 10.42 10.04 9.91   ~ 825 2
26 Z 64-73 G 10 08 28.12 +12 18 23.4   11.3 10.0     ~ 1284 1
27 Z 126-111 G 11 13 28.13 +22 09 10.1   12.9 12.0     ~ 899 0
28 Z 71-87 H2G 12 58 40.1930636208 +14 13 00.739589628 15.24 15.16 14.98 14.81   ~ 475 0
29 NAME Sgr dIG G 19 29 59.0 -17 40 41   15.5 13.6     ~ 323 1
30 NGC 6822 G 19 44 56.199 -14 47 51.29   18 8.1     ~ 1661 0
31 MCG-02-53-003 G 20 46 51.7 -12 50 54 15.75 15.18 14.83 14.46   ~ 470 1
32 IC 5152 rG 22 02 41.521 -51 17 47.20   11.03 10.9 10.19   ~ 273 1
33 NAME Andromeda XXVIII G 22 32 41.20 +31 12 58.2     15.6     ~ 88 0
34 NAME Tuc Galaxy G 22 41 49.6 -64 25 10   15.7 15.2     ~ 324 0
35 NAME Lacerta I G 22 58 16.3 +41 17 28           ~ 53 0
36 MCG-05-55-012 G 23 26 27.52 -32 23 19.5 15.34 14.71 14.23 14.03   ~ 163 0
37 NAME Andromeda VII GiG 23 26 31.0 +50 40 33   13.6 11.8     ~ 222 1
38 Z 431-72 G 23 28 35.2 +14 44 35 13.85 13.16 12.52     ~ 499 1
39 NAME Peg dSph GiG 23 51 46.3 +24 34 57   14.5 13.2     ~ 250 2
40 NAME Andromeda XXI G 23 54 47.7 +42 28 15     14.8     ~ 117 0
41 NAME Andromeda XXIX G 23 58 55.6 +30 45 20     16.0     ~ 61 0
42 NAME Local Group GrG ~ ~           ~ 9325 0

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