2014MNRAS.444L..85F


C.D.S. - SIMBAD4 rel 1.7 - 2020.09.25CEST10:23:12

2014MNRAS.444L..85F - Mon. Not. R. Astron. Soc., 444, L85-L89 (2014/October-2)

The ratio of pattern speeds in double-barred galaxies.

FONT J., BECKMAN J.E., ZARAGOZA-CARDIEL J., FATHI K., EPINAT B. and AMRAM P.

Abstract (from CDS):

We have obtained two-dimensional velocity fields in the ionized gas of a set of eight double-barred galaxies, at high spatial and spectral resolution, using their Hα emission fields measured with a scanning Fabry-Perot spectrometer. Using the technique by which phase reversals in the non-circular motion indicate a radius of corotation, taking advantage of the high angular and velocity resolution, we have obtained the corotation radii and the pattern speeds of both the major bar and the small central bar in each of the galaxies; there are few such measurements in the literature. Our results show that the inner bar rotates more rapidly than the outer bar by a factor between 3.3 and 3.6.

Abstract Copyright: © 2014 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2014)

Journal keyword(s): Galaxies: evolution - Galaxies: kinematics and dynamics - Galaxies: structure

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 M 77 GiP 02 42 40.771 -00 00 47.84 9.70 9.61 8.87 10.1 9.9 ~ 4112 2
2 NGC 1097 LIN 02 46 19.059 -30 16 29.68 10.46 9.97 9.48 8.72 9.8 ~ 1184 3
3 NGC 2595 H2G 08 27 41.986 +21 28 44.73   13.9       ~ 165 0
4 NGC 2950 G 09 42 35.116 +58 51 04.39   11.8       ~ 188 0
5 NGC 3504 LIN 11 03 11.191 +27 58 20.77   13.48 12.93     ~ 486 2
6 M 61 Sy2 12 21 54.9275149050 +04 28 25.588335799 10.07 10.18 9.65     ~ 878 2
7 NGC 4314 LIN 12 22 31.978 +29 53 43.09 11.72 11.43 10.58     ~ 452 1
8 M 100 AGN 12 22 54.9318850854 +15 49 20.294302163 10.04 10.05 9.35     ~ 1660 2
9 NGC 4725 Sy2 12 50 26.5692916552 +25 30 02.737610391   13.45 12.44     ~ 626 2
10 NGC 5430 EmG 14 00 45.820 +59 19 43.14   12.7       ~ 230 1
11 NGC 6946 H2G 20 34 52.332 +60 09 13.24   10.5       ~ 2251 2

    Equat.    Gal    SGal    Ecl

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2020.09.25-10:23:12

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