2003MNRAS.338..465A


Query : 2003MNRAS.338..465A

2003MNRAS.338..465A - Mon. Not. R. Astron. Soc., 338, 465-480 (2003/January-2)

Measurement of fast bars in a sample of early-type barred galaxies.

AGUERRI J.A.L., DEBATTISTA V.P. and CORSINI E.M.

Abstract (from CDS):

We present surface photometry and stellar kinematics of a sample of five SB0 galaxies: ESO 139-G009, IC 874, NGC 1308, NGC 1440 and NGC 3412. We measured their bar pattern speed using the Tremaine-Weinberg method, and derived the ratio, {formmu0}, of the corotation radius to the length of the bar semimajor axis. For all the galaxies, {formmu1} is consistent with being in the range from 1.0 to 1.4, i.e. that they host fast bars. This represents the largest sample of galaxies for which {formmu2} has been measured in this way. Taking into account the measured distribution of {formmu3} and our measurement uncertainties, we argue that this is probably the true distribution of {formmu4}. If this is the case, then the Tremaine-Weinberg method finds a distribution of {formmu5} which is in agreement with that obtained by hydrodynamical simulations. We compare this result with recent high-resolution N -body simulations of bars in cosmologically motivated dark matter haloes, and we conclude that these bars are not located inside centrally concentrated dark matter haloes.

Abstract Copyright: RAS

Journal keyword(s): galaxies: elliptical and lenticular, cD - galaxies: haloes - galaxies: kinematics and dynamics - galaxies: photometry

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 - 2026
#notes
1 NGC 936 EmG 02 27 37.462 -01 09 22.61   11.1   9.98 10.7 ~ 374 0
2 NGC 1023 AG? 02 40 24.0133575864 +39 03 47.663392896 10.91 10.35 9.35 7.83   ~ 689 2
3 NGC 1308 GiG 03 22 28.5393042168 -02 45 25.756786872   15   13.04   ~ 27 0
4 NGC 1440 GiG 03 45 02.9199469080 -18 15 57.720365172   12.48   10.77   ~ 83 0
5 * G CMi PM* 08 02 15.9369212008 +02 20 04.458846354 6.91 5.63 4.38 3.39 2.72 K2IIIbFe-0.5: 206 1
6 NGC 3412 GiG 10 50 53.2803559464 +13 24 43.721664876 11.84 11.45 10.54     ~ 248 1
7 NGC 4596 GiP 12 39 55.9544722920 +10 10 34.185047628   12.4       ~ 387 0
8 IC 874 AG? 13 19 00.5211544464 -27 37 42.922967196   13.46   12.32 12.53 ~ 57 0
9 ESO 139-9 AG? 17 36 05.8920781128 -61 53 54.704613804   14.44   13.25   ~ 25 0
10 HD 167042 PM* 18 10 31.6398993768 +54 17 11.592196980   6.89   5.4   K1III 174 1
11 * mu. Aql PM* 19 34 05.3529921054 +07 22 44.184329526 6.87 5.63 4.45 3.55 2.94 K3-IIIbFe0.5 272 1

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