2005A&A...440..107C


Query : 2005A&A...440..107C

2005A&A...440..107C - Astronomy and Astrophysics, volume 440107-109 (2005/9-2)

Spiral galaxies with a central plateau in the gas velocity curve along the major axis.

COCCATO L., CORSINI E.M., PIZZELLA A. and BERTOLA F.

Abstract (from CDS):

We present the minor-axis kinematics of ionized gas and stars for a sample of 5 spiral galaxies, which are characterized by either a zero or a shallow gas velocity gradient along their major axis. The asymmetric velocity profiles observed along the minor axis of NGC4064 and NGC4189 can be explained as due to the presence of a bar. This is also the case of NGC4178, where the innermost portion of the gaseous disk is nearly face on. In NGC4424 and NGC4941, we measured non-zero gas velocities only in the central regions along the minor axis, and gas velocities drop to zero at larger radii. This kinematic feature is suggestive of the presence of an orthogonally-rotating gaseous component, which is confined in the innermost regions (i.e. an inner polar disk) and needs to be confirmed with integral-field spectroscopy.

Abstract Copyright: ∼

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

VizieR on-line data: <Available at CDS (J/A+A/440/107): table1.dat>

Simbad objects: 7

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Number of rows : 7
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 NGC 2217 Sy2 06 21 39.7505036352 -27 14 01.654973556   11.04 11.93 9.78 10.5 ~ 171 0
2 NGC 4064 GiG 12 04 11.191 +18 26 36.42   12.5       ~ 186 0
3 NGC 4178 H2G 12 12 46.443 +10 51 57.59   12.9       ~ 367 0
4 NGC 4189 GiC 12 13 47.2380839784 +13 25 29.445094632   12.51 11.74     ~ 294 1
5 NGC 4424 H2G 12 27 11.5741235616 +09 25 14.330453700   13.1       ~ 407 0
6 NGC 4698 Sy2 12 48 22.9082830584 +08 29 14.667552276   13.24 12.27     ~ 507 0
7 NGC 4941 Sy2 13 04 13.1036380320 -05 33 05.752803672   13.18 12.23 10.74   ~ 410 0

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