2018A&A...618A.121C


C.D.S. - SIMBAD4 rel 1.7 - 2020.08.10CEST01:43:34

2018A&A...618A.121C - Astronomy and Astrophysics, volume 618A, 121-121 (2018/1-0)

A mass-velocity anisotropy relation in galactic stellar disks.

CHEMIN L.

Abstract (from CDS):

The ellipsoid of stellar random motions is a fundamental ingredient of galaxy dynamics. Yet it has long been difficult to constrain this component in disks others than the Milky Way. This article presents the modeling of the azimuthal-to-radial axis ratio of the velocity ellipsoid of galactic disks from stellar dispersion maps using integral field spectroscopy data of the CALIFA survey. The measured azimuthal anisotropy is shown to be not strongly dependent on the assumed vertical-to-radial dispersion ratio of the ellipsoid. The anisotropy distribution shows a large diversity in the orbital structure of disk galaxies from tangential to radial stellar orbits. Globally, the orbits are isotropic in inner disk regions and become more radial as a function of radius, although this picture tends to depend on galaxy morphology and luminosity. The Milky Way orbital anisotropy profile measured from the Second Gaia Data Release is consistent with those of CALIFA galaxies. A new correlation is evidenced, linking the absolute magnitude or stellar mass of the disks to the azimuthal anisotropy. More luminous disks have more radial orbits and less luminous disks have isotropic and somewhat tangential orbits. This correlation is consistent with the picture in galaxy evolution in which orbits become more radial as the mass grows and is redistributed as a function of time. With the help of circular velocity curves, it is also shown that the epicycle theory fails to reproduce the diversity of the azimuthal anisotropy of stellar random motions, as it predicts only nearly radial orbits in the presence of flat curves. The origin of this conflict is yet to be identified. It also questions the validity of the vertical-to-radial axis ratio of the velocity ellipsoid derived by many studies in the framework of the epicyclic approximation.

Abstract Copyright: © ESO 2018

Journal keyword(s): galaxies: kinematics and dynamics - galaxies: fundamental parameters - galaxies: stellar content - galaxies: individual: Milky Way

VizieR on-line data: <Available at CDS (J/A+A/618/A121): table1.dat>

Simbad objects: 95

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Number of rows : 95

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 UGC 5 AGN 00 03 05.6525922410 -01 54 49.915893585   13.92 13.32 12.40 12.08 ~ 87 0
2 NGC 7819 GiG 00 04 24.495 +31 28 19.30   14.3       ~ 105 0
3 IC 1528 EmG 00 05 05.365 -07 05 36.32   13.5   13.5 13.2 ~ 44 0
4 NGC 7824 GiP 00 05 06.2406522424 +06 55 12.490046538   14.5       ~ 49 0
5 NGC 1 GiP 00 07 15.8554856380 +27 42 29.024562244   13.4       ~ 98 0
6 NGC 36 LIN 00 11 22.2986137597 +06 23 21.626914171   14.5       ~ 72 0
7 MCG-02-02-030 LIN 00 30 07.308 -11 06 49.19   13   12.65   ~ 48 0
8 UGC 312 AGN 00 31 23.840 +08 28 01.32   14.6   13.10   ~ 87 0
9 NGC 160 G 00 36 04.0981265430 +23 57 28.510460638   13.7       ~ 79 0
10 NGC 177 G 00 37 34.335 -22 32 57.30   14.14   13.00   ~ 39 0
11 NGC 180 GiG 00 37 57.692 +08 38 06.80   14.3       ~ 85 0
12 NGC 192 rG 00 39 13.391 +00 51 50.89   13.9   11.97   ~ 111 0
13 NGC 237 AGN 00 43 27.881 -00 07 29.52   13.65 13.06 12.53 11.85 ~ 129 0
14 NGC 234 EmG 00 43 32.3816212175 +14 20 33.389672451   13.5       ~ 103 0
15 NGC 257 GiG 00 48 01.5094425149 +08 17 49.506328654   13.7       ~ 72 0
16 NGC 477 Sy2 01 21 20.3413342481 +40 29 17.410487515   14.0       ~ 84 0
17 IC 1683 GiG 01 22 38.867 +34 26 13.21   14.2       ~ 70 0
18 NGC 496 GiG 01 23 11.618 +33 31 45.29   14.3       ~ 90 0
19 Mrk 993 Sy1 01 25 31.4568120260 +32 08 10.482711487   15.01 13.96     ~ 196 0
20 NGC 551 G 01 27 40.6317165588 +37 10 58.787535302   13.5       ~ 66 0
21 NGC 755 EmG 01 56 22.685 -09 03 41.15   13.2   12.13 13.0 ~ 88 0
22 NGC 1093 G 02 48 16.1263007523 +34 25 11.329044454   14.3       ~ 52 0
23 UGC 3253 G 05 19 41.625 +84 03 09.10   13.1       ~ 57 0
24 NGC 2253 G 06 43 14.6852097640 +65 40 38.949836611   15.0       ~ 45 0
25 IC 456 GiG 07 00 17.5529214529 -30 09 49.340842516   12.96   11.28   ~ 19 0
26 NGC 2347 LIN 07 16 04.087 +64 42 41.54   13.2       ~ 103 0
27 NGC 2336 GiP 07 27 04.050 +80 10 41.05   13.46 12.51     ~ 223 0
28 NGC 2449 LIN 07 47 20.2949490006 +26 55 48.591065899   14.3       ~ 53 0
29 UGC 4145 Sy2 07 59 40.1306100542 +15 23 12.626566898   14.0       ~ 50 0
30 NGC 2540 Q? 08 12 46.425 +26 21 39.13   14.5       ~ 57 0
31 NGC 2553 GiG 08 17 35.035 +20 54 11.62   15.0       ~ 40 0
32 NGC 2639 Sy1 08 43 38.093 +50 12 19.94 12.90 12.56 11.65     ~ 384 2
33 NGC 2906 GiG 09 32 06.247 +08 26 30.86   13.1       ~ 129 0
34 NGC 2916 Sy2 09 34 57.5939750994 +21 42 18.947459809 12.81 12.74 12.05     ~ 125 1
35 IC 674 LIN 11 11 06.362 +43 37 58.84   14.5       ~ 48 0
36 NGC 3811 G 11 41 16.655 +47 41 26.62   13.0       ~ 148 0
37 NGC 3815 GiG 11 41 39.309 +24 48 01.90   14.2       ~ 66 0
38 NGC 3994 LIN 11 57 36.866 +32 16 39.45   13.51 12.87     ~ 166 1
39 NGC 4047 G 12 02 50.6873307305 +48 38 10.343981636   12.8       ~ 77 0
40 NGC 4210 LIN 12 15 15.8479940774 +65 59 07.089820067   13.4       ~ 109 0
41 NGC 4470 H2G 12 29 37.8070254595 +07 49 27.286182613   12.9       ~ 201 0
42 NGC 4961 GiP 13 05 47.5766135361 +27 44 03.246072606   13.5       ~ 149 0
43 UGC 8231 LSB 13 08 37.262 +54 04 28.02   14.2       ~ 43 0
44 NGC 5000 SBG 13 09 47.454 +28 54 25.07   14.0 13.41     ~ 145 1
45 NGC 5016 AGN 13 12 06.6702084873 +24 05 41.970504488   13.180 12.558 12.093 11.547 ~ 133 0
46 NGC 5056 G 13 16 12.329 +30 57 01.08   13.6       ~ 116 0
47 NGC 5205 LIN 13 30 03.691 +62 30 41.50   13.5       ~ 94 0
48 UGC 8733 EmG 13 48 39.119 +43 24 44.73   14.6       ~ 69 0
49 NGC 5378 LIN 13 56 51.0211624310 +37 47 50.045919156   13.8       ~ 89 0
50 NGC 5406 LIN 14 00 20.1216280902 +38 54 55.505973822   13.1       ~ 99 0
51 NGC 5480 G 14 06 21.522 +50 43 29.99   12.6       ~ 169 0
52 NVSS J141045+151231 rG 14 10 45.462 +15 12 33.91   14.7       ~ 55 0
53 NGC 5520 GiP 14 12 22.8052932999 +50 20 54.474015371   13.3       ~ 101 0
54 NGC 5614 IG 14 24 07.591 +34 51 32.02   12.6       ~ 121 0
55 NGC 5633 EmG 14 27 28.3609163671 +46 08 47.523613534   13.176 12.932 12.449 11.575 ~ 152 0
56 NGC 5657 rG 14 30 43.641 +29 10 50.31   14.4       ~ 73 0
57 NGC 5720 LIN 14 38 33.2820411698 +50 48 54.897220308   14.7       ~ 58 0
58 UGC 9476 rG 14 41 31.959 +44 30 45.39   13.59 12.95     ~ 77 0
59 NGC 5888 LIN 15 13 07.376 +41 15 52.63   14.3       ~ 61 0
60 NGC 5930 GiP 15 26 07.9964334517 +41 40 33.691556640   13.0       ~ 412 0
61 NGC 5934 LIN 15 28 12.762 +42 55 47.44   14.5       ~ 47 0
62 NGC 5971 LIN 15 35 36.9045223890 +56 27 42.112723622   14.9       ~ 33 0
63 IC 4566 LIN 15 36 42.1583596367 +43 32 21.526076876   14.3       ~ 70 0
64 NGC 5980 GiG 15 41 30.4161604675 +15 47 15.735323846   13.3       ~ 73 0
65 NGC 6004 GiG 15 50 22.694 +18 56 20.77   13.4       ~ 78 0
66 IC 1151 G 15 58 32.329 +17 26 29.59   13.4       ~ 109 0
67 NGC 6060 GiG 16 05 51.980 +21 29 05.94   14.3       ~ 82 0
68 NGC 6132 rG 16 23 38.800 +11 47 10.91   14.8       ~ 46 0
69 NGC 6186 GiG 16 34 25.485 +21 32 27.01   14.2       ~ 71 0
70 NGC 6301 GiG 17 08 32.739 +42 20 20.86   14.6       ~ 51 0
71 NGC 6394 Sy1 17 30 21.426 +59 38 23.62   15.27       ~ 78 1
72 NGC 6478 GiG 17 48 38.3416724987 +51 09 26.205931515   14.1       ~ 60 0
73 NGC 6497 G 17 51 17.9720724479 +59 28 15.131465602   14.3       ~ 45 0
74 MCG-02-51-004 GiG 20 15 39.895 -13 37 18.84   14   13.23   ~ 39 0
75 NGC 6941 rG 20 36 23.4741685623 -04 37 07.443162713   13.3   13.3 12.9 ~ 63 3
76 NGC 6978 LIN 20 52 35.4344586778 -05 42 40.042984053   14.22   12.67   ~ 72 0
77 UGC 11649 LIN 20 55 27.6252477888 -01 13 30.889418751   14.5       ~ 57 0
78 VV 476a IG 21 07 41.3357373642 +03 52 17.979694323     15.3     ~ 29 1
79 NGC 7047 LIN 21 16 27.634 -00 49 35.39   14.3       ~ 57 0
80 NGC 7311 LIN 22 34 06.760 +05 34 13.11   13.4       ~ 89 0
81 NGC 7321 LIN 22 36 28.0163538572 +21 37 18.376079359   15.4       ~ 81 0
82 NGC 7364 rG 22 44 24.3708304089 -00 09 43.648311705   13.8       ~ 79 0
83 UGC 12185 LIN 22 47 25.063 +31 22 24.77   14.8       ~ 51 0
84 NGC 7549 GiG 23 15 17.285 +19 02 29.92   14.1   12.79   ~ 103 0
85 NGC 7563 LIN 23 15 55.950 +13 11 46.63 14.48 13.87 12.81     ~ 61 1
86 NGC 7591 SyG 23 18 16.2683208567 +06 35 09.111064142   13.8       ~ 224 0
87 NGC 7631 GiG 23 21 26.675 +08 13 03.41   13.8       ~ 134 0
88 NGC 7653 LIN 23 24 49.3611914459 +15 16 32.141943276   12.06 11.91     ~ 81 1
89 NGC 7691 EmG 23 32 24.412 +15 50 52.03   14.2       ~ 69 0
90 NGC 7716 G 23 36 31.458 +00 17 50.33   12.9   13.0 12.6 ~ 139 0
91 NGC 7738 LIN 23 44 02.0233516093 +00 30 59.758852365   14.4       ~ 75 0
92 NVSS J235106+010322 rG 23 51 06.218 +01 03 23.57   14.4       ~ 88 0
93 UGC 12816 LSB 23 51 50.647 +03 04 57.89   15.0       ~ 52 0
94 NGC 7783 Sy1 23 54 10.083 +00 22 58.24   14.14   12.43   ~ 63 0
95 NGC 7800 LSB 23 59 36.306 +14 48 20.06   13.4       ~ 80 0

    Equat.    Gal    SGal    Ecl

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2020.08.10-01:43:34

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