2017ApJ...836..152L

Query : 2017ApJ...836..152L

2017ApJ...836..152L - Astrophys. J., 836, 152-152 (2017/February-3)

One law to rule them all: the radial acceleration relation of galaxies.

LELLI F., McGAUGH S.S., SCHOMBERT J.M. and PAWLOWSKI M.S.

Abstract (from CDS):

We study the link between baryons and dark matter (DM) in 240 galaxies with spatially resolved kinematic data. Our sample spans 9 dex in stellar mass and includes all morphological types. We consider (1) 153 late-type galaxies (LTGs; spirals and irregulars) with gas rotation curves from the SPARC database, (2) 25 early-type galaxies (ETGs; ellipticals and lenticulars) with stellar and H I data from ATLAS3D or X-ray data from Chandra, and (3) 62 dwarf spheroidals (dSphs) with individual-star spectroscopy. We find that LTGs, ETGs, and "classical" dSphs follow the same radial acceleration relation: the observed acceleration (gobs) correlates with that expected from the distribution of baryons (gbar) over 4 dex. The relation coincides with the 1:1 line (no DM) at high accelerations but systematically deviates from unity below a critical scale of ∼10–10 m s–2. The observed scatter is remarkably small ( 0.13 dex) and largely driven by observational uncertainties. The residuals do not correlate with any global or local galaxy property (e.g., baryonic mass, gas fraction, and radius). The radial acceleration relation is tantamount to a natural law: when the baryonic contribution is measured, the rotation curve follows, and vice versa. Including ultrafaint dSphs, the relation may extend by another 2 dex and possibly flatten at gbar 10–12 m s–2, but these data are significantly more uncertain. The radial acceleration relation subsumes and generalizes several well-known dynamical properties of galaxies, like the Tully-Fisher and Faber-Jackson relations, the "baryon-halo" conspiracies, and Renzo's rule.

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

Journal keyword(s): dark matter - galaxies: dwarf - galaxies: elliptical and lenticular, cD - galaxies: irregular - galaxies: kinematics and dynamics - galaxies: spiral - galaxies: spiral

Simbad objects: 93

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Number of rows : 93
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 NAME Andromeda XX G 00 07 30.70 +35 07 56.4     18.2     ~ 77 0
2 And XIX G 00 19 32.10 +35 02 37.1     15.6     ~ 168 0
3 NAME Andromeda XXVI G 00 23 45.6 +47 54 58     17.3     ~ 76 0
4 NAME Cetus Dwarf Galaxy G 00 26 10.8 -11 03 14     13.2     ~ 257 0
5 NAME Andromeda XXV G 00 30 08.9 +46 51 07     14.8     ~ 120 0
6 NGC 147 GiG 00 33 12.120 +48 30 31.46   12.0 9.5     ~ 720 1
7 NAME Andromeda III G 00 35 33.8 +36 29 52     14.4     ~ 309 0
8 NAME Cassiopeia III G 00 35 59.4 +51 33 35           ~ 59 0
9 NAME Andromeda XXX G 00 36 34.90 +49 38 48.0           ~ 59 0
10 NAME Andromeda XVII G 00 37 07.0 +44 19 20     15.8     ~ 101 0
11 NAME Andromeda XXVII G 00 37 27.1 +45 23 13     16.7     ~ 82 0
12 NGC 185 Sy2 00 38 57.9400026024 +48 20 15.035874648   9.10 9.2     ~ 840 1
13 M 110 GiG 00 40 22.0572349992 +41 41 07.507220136   8.92 8.07     ~ 1370 1
14 M 31 AGN 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 13622 1
15 NAME Andromeda I G 00 45 39.8 +38 02 28   13.9 12.7     ~ 355 0
16 NAME Andromeda XI G 00 46 20.0 +33 48 05     17.5     ~ 130 0
17 NAME Andromeda XII G 00 47 27.0 +34 22 29     18.3     ~ 124 0
18 NAME Andromeda XIV G 00 51 35.0 +29 41 49     15.9     ~ 132 0
19 NAME Andromeda XIII G 00 51 51.0 +33 00 16     18.1     ~ 128 0
20 NAME Andromeda IX G 00 52 53.0 +43 11 45     16.3     ~ 176 1
21 NAME Pisces V G 00 59 29.8 +32 22 36     14.4     ~ 149 0
22 NAME Sculptor Dwarf Galaxy G 01 00 09.4 -33 42 32   9.79 8.6 8.81   ~ 1498 4
23 NAME Pisces I G 01 03 55.0 +21 53 06   16.18 14.3     ~ 404 0
24 NAME Andromeda X G 01 06 33.70 +44 48 15.8     16.6     ~ 125 1
25 NAME Andromeda V G 01 10 17.1 +47 37 41     15.3     ~ 215 0
26 NAME Andromeda XV G 01 14 18.7 +38 07 03     14.6     ~ 123 0
27 NAME Andromeda II G 01 16 29.8 +33 25 09     11.7     ~ 402 0
28 NAME Andromeda XXIV G 01 18 30.0 +46 21 58     16.3     ~ 64 0
29 NAME Andromeda XXII G 01 27 40.0 +28 05 25     18.0     ~ 95 0
30 NAME Andromeda XXIII G 01 29 21.8 +38 43 08     14.2     ~ 88 0
31 NGC 720 Sy1 01 53 00.523 -13 44 19.25   12.4   10.36   ~ 536 0
32 NAME Segue 2 G 02 19 16.0 +20 10 31     15.2     ~ 299 0
33 MCG-06-07-001 G 02 39 59.3 -34 26 57   9.02 7.4     ~ 1894 1
34 NAME Hor I G 02 55 31.7 -54 07 08           ~ 169 0
35 NAME Andromeda XXXIII G 03 01 23.6 +40 59 18           ~ 43 0
36 NGC 1332 GiP 03 26 17.321 -21 20 07.33   11.45   9.84   ~ 378 0
37 NAME Reticulum II G 03 35 42.1 -54 02 57           ~ 375 0
38 NGC 1407 rG 03 40 11.904 -18 34 49.36   10.64 9.67 9.13   ~ 613 2
39 NGC 1521 GiG 04 08 18.9110259504 -21 03 07.337782908   12.31   10.73   ~ 122 0
40 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
41 ESO 206-20A G 06 41 36.7 -50 57 58   22.14 11.0 19.47   ~ 1190 0
42 NAME UMa II Galaxy G 08 51 30.0 +63 07 48     13.3     ~ 410 0
43 NGC 2685 Sy2 08 55 34.7027817000 +58 44 03.876540108   13.68 12.70     ~ 459 1
44 NGC 2824 AGN 09 19 02.2176446256 +26 16 11.997810444   14.3       ~ 126 1
45 NGC 2859 AG? 09 24 18.5266762368 +34 30 48.561305832   11.8       ~ 270 0
46 NAME Leo T G 09 34 53.4 +17 03 05     15.1     ~ 434 0
47 NGC 2974 Sy2 09 42 33.2918467632 -03 41 57.038311068   12.19   10.77   ~ 463 0
48 NAME Segue 1 G 10 07 03.2 +16 04 25     15.3     ~ 517 1
49 Z 64-73 G 10 08 28.12 +12 18 23.4   11.3 10.0     ~ 1284 1
50 NAME Sextans dSph LSB 10 13 02.9 -01 36 53   12 10.4     ~ 921 0
51 IC 2574 AG? 10 28 23.6148831408 +68 24 43.440012756 11.70 11.07 10.87 10.74   ~ 703 1
52 NAME UMa I Galaxy G 10 34 52.80 +51 55 12.0     14.4     ~ 355 1
53 NAME Willman 1 G 10 49 21.0 +51 03 00     15.2     ~ 345 0
54 NGC 3522 GiG 11 06 40.4644062552 +20 05 07.900946304   14.13       ~ 116 1
55 Z 125-29 H2G 11 07 24.6828148008 +21 39 25.578974664   14.8       ~ 83 0
56 Z 126-111 G 11 13 28.13 +22 09 10.1   12.9 12.0     ~ 899 0
57 NGC 3626 GiG 11 20 03.8069651160 +18 21 24.543304164   11.2       ~ 282 0
58 NAME Leo V LSB 11 31 09.60 +02 13 12.0     16.0     ~ 234 0
59 NAME Leo IV LSB 11 32 57.0 -00 32 00     15.1     ~ 419 1
60 NGC 3838 GiP 11 44 13.7648109936 +57 56 53.538816012   12.7       ~ 102 0
61 NGC 3941 Sy2 11 52 55.3609498656 +36 59 10.716212904   11.45 11.62 9.97   ~ 261 0
62 NGC 3945 GiG 11 53 13.6081388304 +60 40 32.125024704   11.6       ~ 265 0
63 NGC 3998 Sy2 11 57 56.1334044408 +55 27 12.922443432   11.64 12.10 10.09   ~ 682 2
64 NGC 4125 GiP 12 08 06.017 +65 10 26.88 11.14 10.65 9.72     ~ 448 2
65 NGC 4203 LIN 12 15 05.0549203560 +33 11 50.383965120   12.98 11.99     ~ 514 2
66 NGC 4261 LIN 12 19 23.2160630 +05 49 29.700024   13.92 12.87     ~ 1290 0
67 NGC 4262 GiG 12 19 30.5694336288 +14 52 39.517143276 13.00 12.49 11.55     ~ 378 1
68 NGC 4278 LIN 12 20 06.8242 +29 16 50.722 11.54 11.09 10.16     ~ 988 2
69 NAME Hydra II G 12 21 42.1 -31 59 07           ~ 118 0
70 NAME Coma Dwarf Galaxy G 12 26 59.0 +23 54 15     14.1     ~ 482 1
71 M 49 Sy2 12 29 46.8 +08 00 01   13.21 12.17     ~ 2174 2
72 M 60 GiC 12 43 39.9708251934 +11 33 09.688174067   10.3       ~ 1395 1
73 NAME CVn II dSph G 12 57 09.6 +34 19 12     16.1     ~ 287 2
74 NAME CVn I dSph G 13 28 03.5 +33 33 21     13.1     ~ 352 1
75 NAME Bootes III G 13 57 07.4 +26 46 30     12.6     ~ 115 1
76 NAME Bootes II G 13 58 00.0 +12 51 00     15.4     ~ 269 0
77 NAME Bootes Dwarf Spheroidal Galaxy G 14 00 00.0 +14 30 00     12.8     ~ 491 0
78 NGC 5582 GiP 14 20 43.1108121696 +39 41 36.927369816   13.0       ~ 128 0
79 Z 318-18 G 15 09 08.0 +67 13 21   13.60 10.6     ~ 1459 0
80 LEDA 86657 LSB 15 57 27.483 +20 39 59.12           ~ 104 0
81 NAME Hercules Dwarf Galaxy G 16 31 02.0 +12 47 30     14.0     ~ 379 1
82 Z 300-12 G 17 20 14.335 +57 55 16.39   12.40 10.6     ~ 1428 1
83 NGC 6482 GiG 17 51 48.8339247888 +23 04 18.889271112 12.71 12.35 11.45     ~ 220 1
84 NGC 6798 AG? 19 24 03.1663172664 +53 37 29.387614044   14.5       ~ 69 0
85 NAME Andromeda XXVIII G 22 32 41.20 +31 12 58.2     15.6     ~ 88 0
86 NAME Tuc Galaxy G 22 41 49.6 -64 25 10   15.7 15.2     ~ 324 0
87 NAME Lacerta I G 22 58 16.3 +41 17 28           ~ 53 0
88 NAME Pisces II G 22 58 31.0 +05 57 09     16.3     ~ 283 0
89 NAME Andromeda VII GiG 23 26 31.0 +50 40 33   13.6 11.8     ~ 222 1
90 NAME Peg dSph GiG 23 51 46.3 +24 34 57   14.5 13.2     ~ 250 2
91 NAME Andromeda XXI G 23 54 47.7 +42 28 15     14.8     ~ 117 0
92 NAME Andromeda XXIX G 23 58 55.6 +30 45 20     16.0     ~ 61 0
93 NAME Local Group GrG ~ ~           ~ 9325 0

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