2002MNRAS.329..502M


C.D.S. - SIMBAD4 rel 1.7 - 2020.08.10CEST02:19:51

2002MNRAS.329..502M - Mon. Not. R. Astron. Soc., 329, 502-512 (2002/January-3)

Gas inflow in barred galaxies - effects of secondary bars.

MACIEJEWSKI W., TEUBEN P.J., SPARKE L.S. and STONE J.M.

Abstract (from CDS):

We report results of high-resolution hydrodynamical simulations of gas flows in barred galaxies, with a focus on gas dynamics in the central kiloparsec. In a single bar with an inner Lindblad resonance, we find either near-circular motion of gas in the nuclear ring, or a spiral shock extending towards the galaxy centre, depending on the sound speed in the gas. From a simple model of a dynamically possible doubly barred galaxy with resonant coupling, we infer that the secondary bar is likely to end well inside its corotation. Such a bar cannot create shocks in the gas flow, and therefore will not reveal itself in colour maps through straight dust lanes: the gas flows induced by it are different from those caused by the rapidly rotating main bars. In particular, we find that secondary stellar bars are unlikely to increase the mass inflow rate into the galactic nucleus.

Abstract Copyright: The Royal Astronomical Society

Journal keyword(s): hydrodynamics - shock waves - galaxies: kinematics and dynamics - galaxies: ISM - galaxies: nuclei - galaxies: spiral

Simbad objects: 11

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Number of rows : 11

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 Mrk 573 Sy2 01 43 57.7763654544 +02 20 59.525472345   14.90 14.07     ~ 484 0
2 NGC 986 EmG 02 33 34.349 -39 02 42.21 11.72 11.74 10.91 10.10 11.3 ~ 168 1
3 NGC 1530 G 04 23 27.102 +75 17 44.05   13.40       ~ 252 1
4 NGC 3081 Sy2 09 59 29.5436045645 -22 49 34.748021329   13.06 13.55 11.67 12.1 ~ 412 0
5 NGC 5283 Sy2 13 41 05.7487638040 +67 40 19.995794737   14.97 14.05     ~ 227 0
6 NGC 5347 Sy2 13 53 17.7993659226 +33 29 26.989049245   13.46 12.70     ~ 312 1
7 Mrk 471 Sy2 14 22 55.3335260826 +32 51 02.364766695   15.27 14.42     ~ 130 1
8 NGC 5929 GiP 15 26 06.158 +41 40 14.40   13.0 14.00     ~ 414 0
9 NGC 5930 GiP 15 26 07.9964334517 +41 40 33.691556640   13.0       ~ 412 0
10 NGC 7582 GiP 23 18 23.621 -42 22 14.06 11.62 10.92 10.62     ~ 800 2
11 NGC 7743 Sy2 23 44 21.1586928811 +09 56 02.970129689   14.19 13.28     ~ 289 0

    Equat.    Gal    SGal    Ecl

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2020.08.10-02:19:51

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