2004A&A...424..447P


Query : 2004A&A...424..447P

2004A&A...424..447P - Astronomy and Astrophysics, volume 424, 447-454 (2004/9-3)

Ionized gas and stellar kinematics of seventeen nearby spiral galaxies.

PIZZELLA A., CORSINI E.M., VEGA BELTRAN J.C. and BERTOLA F.

Abstract (from CDS):

Ionized gas and stellar kinematics have been measured along the major axes of seventeen nearby spiral galaxies of intermediate to late morphological type. We discuss the properties of each sample galaxy, distinguishing between those characterized by regular or peculiar kinematics. In most of the observed galaxies, ionized gas rotates more rapidly than stars and has a lower velocity dispersion, as is to be expected if the gas is confined in the disc and supported by rotation while the stars are mostly supported by dynamical pressure. In a few objects, gas and stars show almost the same rotational velocity and low velocity dispersion, suggesting that their motion is dominated by rotation. Incorporating the spiral galaxies studied by Bertola et al. (1996ApJ...458L..67B), Corsini et al. (1999A&A...342..671C, 2003A&A...408..873C) and Vega Beltran et al. (2001A&A...374..394V) we have compiled a sample of 50 S0/a-Scd galaxies, for which the major-axis kinematics of the ionized gas and stars have been obtained with the same spatial (≃1'') and spectral (≃50km/s) resolution, and measured with the same analysis techniques. This allowed us to address the frequency of counter-rotation in spiral galaxies. It turns out that less than 12% and less than 8% (at the 95% confidence level) of the sample galaxies host a counter-rotating gaseous and stellar disc, respectively. The comparison with S0 galaxies suggests that the retrograde acquisition of small amounts of external gas gives rise to counter-rotating gaseous discs only in gas-poor S0s, while in gas-rich spirals the newly acquired gas is swept away by the pre-existing gas. Counter-rotating gaseous and stellar discs in spirals are formed only from the retrograde acquisition of large amounts of gas exceeding that of pre-existing gas, and subsequent star formation, respectively.

Abstract Copyright:

Journal keyword(s): galaxies: kinematics and dynamics - galaxies: spiral - galaxies: structure

VizieR on-line data: <Available at CDS (J/A+A/424/447): galaxies.dat table3.dat table4.dat>

Simbad objects: 30

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Number of rows : 30
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 NGC 210 GiP 00 40 34.9927609368 -13 52 21.999585108   11.8   11.00 11.4 ~ 166 0
2 M 31 G 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 11788 1
3 NGC 615 GiG 01 35 05.6880367176 -07 20 24.841575348   12.8   11.43 12.2 ~ 133 0
4 NGC 980 LSB 02 35 18.5656015104 +40 55 35.357048004   14.3       ~ 29 0
5 NGC 1620 GiG 04 36 37.3587737352 -00 08 36.824388684   12.5   12.1 12.2 ~ 134 0
6 NGC 2590 EmG 08 25 02.0021287536 -00 35 29.142200148   14.0       ~ 71 0
7 NGC 2708 EmG 08 56 08.0718678384 -03 21 36.487371348   12.6   12.5 11.9 ~ 88 1
8 NGC 2815 EmG 09 16 19.7483020320 -23 37 59.733390648   12.70 11.84 11.26 11.9 ~ 111 0
9 NGC 3054 GiG 09 54 28.5871599144 -25 42 12.369525732   12.27   10.92 11.4 ~ 137 0
10 M 81 Sy2 09 55 33.1726556496 +69 03 55.062505368   7.89 6.94     ~ 4168 3
11 NGC 3200 G 10 18 36.5393422320 -17 58 57.031507560   12.92   11.78 12.1 ~ 119 0
12 NGC 3593 GiG 11 14 36.9731893800 +12 49 05.497790664   11.8       ~ 340 2
13 NGC 3626 GiG 11 20 03.8069651160 +18 21 24.543304164   11.2       ~ 245 0
14 NGC 3717 EmG 11 31 31.992 -30 18 27.86   12.21   10.56 11.0 ~ 93 0
15 NGC 4138 Sy1 12 09 29.8011417048 +43 41 06.864140004 12.46 12.29 11.32 10.82   ~ 379 1
16 NGC 4450 LIN 12 28 29.5910654016 +17 05 05.976112020   10.90 10.08     ~ 532 2
17 NGC 4672 GiG 12 46 15.7249021968 -41 42 21.407260572   14.12 14.25 12.60 12.9 ~ 72 0
18 NGC 4682 GiG 12 47 15.5032131528 -10 03 48.130607628   12.9   11.97 12.6 ~ 91 0
19 NGC 4698 Sy2 12 48 22.9082830584 +08 29 14.667552276   13.24 12.27     ~ 461 0
20 NGC 5530 G 14 18 27.10 -43 23 14.8   11.78 11.00 10.84 11.4 ~ 80 0
21 NGC 5854 GiG 15 07 47.6993537544 +02 34 07.059522288   13.1   11.23   ~ 144 0
22 * 37 Lib PM* 15 34 10.7024841438 -10 03 52.317750492 6.48 5.63 4.62 3.85 3.33 K1III-IV 168 0
23 NGC 6118 EmG 16 21 48.6065282088 -02 17 00.680742060   13.20   12.0 11.7 ~ 189 0
24 NGC 6878 GiG 20 13 53.2740838032 -44 31 36.410682216   13.65 12.42 12.25   ~ 38 0
25 NGC 6925 EmG 20 34 20.5702851864 -31 58 51.143730564   12.09 11.30 10.77 11.4 ~ 114 0
26 NGC 7083 GiG 21 35 44.6351403840 -63 54 10.199544624   11.93 11.04 10.81 11.5 ~ 175 0
27 NGC 7217 LIN 22 07 52.3984675584 +31 21 33.632293572   12.94 11.92     ~ 476 0
28 NGC 7377 LIN 22 47 47.4743722752 -22 18 43.770561516   11.39 12.78 10.53   ~ 93 0
29 NGC 7412 GiG 22 55 45.7654890264 -42 38 31.057726956   11.82 11.38 12.0 11.4 ~ 110 0
30 NGC 7531 GiG 23 14 48.4576363992 -43 35 59.465701536   11.99 11.26 12.1 11.7 ~ 141 0

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2022.05.20-02:24:40

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