2019MNRAS.489.3797M


Query : 2019MNRAS.489.3797M

2019MNRAS.489.3797M - Mon. Not. R. Astron. Soc., 489, 3797-3809 (2019/November-1)

The stellar velocity dispersion in nearby spirals: radial profiles and correlations.

MOGOTSI K.M. and ROMEO A.B.

Abstract (from CDS):

The stellar velocity dispersion, σ, is a quantity of crucial importance for spiral galaxies, where it enters fundamental dynamical processes such as gravitational instability and disc heating. Here we analyse a sample of 34 nearby spirals from the Calar Alto Legacy Integral Field Area (CALIFA) spectroscopic survey, deproject the line-of-sight σ to σR, and present reliable radial profiles of σR as well as accurate measurements of <σR> , the radial average of σR over one effective (half-light) radius. We show that there is a trend for σR to increase with decreasing R, that <σR> correlates with stellar mass (M*), and tested correlations with other galaxy properties. The most significant and strongest correlation is the one with M*: <σR>∝M*0.5. This tight scaling relation is applicable to spiral galaxies of type Sa-Sd and stellar mass M* ≃ 109.5-1011.5 M. Simple models that relate σR to the stellar surface density and disc scale length roughly reproduce that scaling, but overestimate <σR> significantly.

Abstract Copyright: © 2019 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): instabilities - ISM: kinematics and dynamics - galaxies: ISM - galaxies: kinematics and dynamics - galaxies: star formation - galaxies: structure

Simbad objects: 35

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Number of rows : 35
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 UGC 809 GiG 01 15 51.851 +33 48 38.83   14.8       ~ 59 0
2 M 77 GiP 02 42 40.771 -00 00 47.84 9.70 9.61 8.87 10.1 9.9 ~ 4225 2
3 UGC 3253 G 05 19 41.625 +84 03 09.10   13.1       ~ 61 0
4 NGC 2253 G 06 43 14.6852097640 +65 40 38.949836611   15.0       ~ 49 0
5 UGC 3539 GiG 06 48 54.054 +66 15 40.90   15.4       ~ 54 0
6 NGC 2347 LIN 07 16 04.087 +64 42 41.54   13.2       ~ 107 0
7 NGC 2410 AGN 07 35 02.258 +32 49 19.77   17.01 16.26     ~ 74 0
8 UGC 4029 GiG 07 48 18.994 +34 19 55.73   14.6       ~ 55 0
9 IC 480 G 07 55 23.229 +26 44 28.04   15.2       ~ 51 0
10 NVSS J075913+325454 rG 07 59 13.047 +32 54 52.83   13.5       ~ 84 1
11 IC 2247 LIN 08 15 59.089 +23 11 58.57   15.2       ~ 93 0
12 NGC 2730 rG 09 02 15.839 +16 50 17.51   13.7       ~ 61 0
13 IC 2487 EmG 09 30 09.188 +20 05 27.29   14.20       ~ 71 0
14 NVSS J093526+294843 rG 09 35 26.2778473524 +29 48 45.574744593   15.0       ~ 52 0
15 UGC 5598 G 10 22 14.000 +20 35 21.57   15.5       ~ 43 0
16 NGC 4644 GiP 12 42 42.6505379517 +55 08 43.928656893   14.8       ~ 60 0
17 NGC 4711 GiC 12 48 45.8621672335 +35 19 57.883605425   14.4       ~ 57 0
18 NGC 5056 G 13 16 12.329 +30 57 01.08   13.6       ~ 122 0
19 IC 944 GiP 13 51 30.897 +14 05 31.66   14.7       ~ 63 0
20 NGC 5614 IG 14 24 07.591 +34 51 32.02   12.6       ~ 127 0
21 UGC 9542 GiG 14 49 01.195 +42 27 50.14   15.3       ~ 56 0
22 NGC 5908 GiG 15 16 43.220 +55 24 33.29   13.5       ~ 152 1
23 UGC 9873 G 15 29 50.651 +42 37 44.11   15.6       ~ 57 0
24 UGC 9892 G 15 32 51.958 +41 11 29.53   15.3       ~ 43 0
25 NGC 5980 GiG 15 41 30.4161604675 +15 47 15.735323846   13.3       ~ 80 0
26 NVSS J155903+511815 rG 15 59 02.761 +51 18 16.24   15.0       ~ 53 0
27 NGC 6060 GiG 16 05 51.980 +21 29 05.94   14.3       ~ 87 0
28 NVSS J160640+300558 rG 16 06 40.182 +30 05 56.65   14.4       ~ 101 0
29 NVSS J162646+113448 rG 16 26 46.692 +11 34 48.63   15.0       ~ 63 0
30 NGC 6168 GiP 16 31 21.477 +20 11 01.38   15.22       ~ 77 0
31 NGC 6186 GiG 16 34 25.485 +21 32 27.01   14.2       ~ 77 0
32 UGC 10710 GiG 17 06 52.5404664782 +43 07 20.026364944   15.2       ~ 61 0
33 NGC 6314 LIN 17 12 38.6893448746 +23 16 12.247289041 16.04 15.56 14.62 14.02 13.33 ~ 91 0
34 NGC 6478 GiG 17 48 38.3416724986 +51 09 26.205931515   14.1       ~ 64 0
35 NGC 7738 LIN 23 44 02.0233516093 +00 30 59.758852365   14.4       ~ 80 0

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2021.07.31-09:55:11

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