2013MNRAS.434.1257B

Query : 2013MNRAS.434.1257B

2013MNRAS.434.1257B - Mon. Not. R. Astron. Soc., 434, 1257-1263 (2013/September-2)

A slow bar in the dwarf irregular galaxy NGC 3741.

BANERJEE A., PATRA N.N., CHENGALUR J.N. and BEGUM A.

Abstract (from CDS):

Using the Tremaine-Weinberg method, we measure the speed of the H i bar seen in the disc of NGC 3741. NGC 3741 is an extremely gas-rich galaxy with an Hi disc which extends to about 8.3 times its Holmberg radius. It is also highly dark matter dominated. Our calculated value of the pattern speed Ωp is 17.1±3.4 km s-1 kpc-1. We also find the ratio of the corotation radius to the bar semimajor axis to be ( 1.6±0.3), indicating a slow bar. This is consistent with bar models in which dynamical friction results in a slow bar in dark-matter-dominated galaxies.

Abstract Copyright: © 2013 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2013)

Journal keyword(s): galaxies: dwarf - galaxies: individual: NGC 3741 - galaxies: irregular - galaxies: ISM - galaxies: kinematics and dynamics - galaxies: structure

Simbad objects: 8

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Number of rows : 8
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 MCG+03-03-013 LSB 01 00 51.98838 +19 28 33.4966   17       ~ 54 0
2 NGC 925 H2G 02 27 16.913 +33 34 43.97   10.69 10.12 9.55   ~ 818 1
3 NGC 2366 H2G 07 28 52.4529 +69 12 38.859 12.25 11.86 11.39 11.33   ~ 801 0
4 NGC 2915 AG? 09 26 11.532 -76 37 34.75 13.13 12.93 12.68 11.90 12.8 ~ 371 2
5 M 81 Sy2 09 55 33.1726556496 +69 03 55.062505368   7.89 6.94     ~ 4725 3
6 NGC 3741 AG? 11 36 05.754 +45 17 02.96 15.01 14.55 14.23 14.06   ~ 237 0
7 M 94 SyG 12 50 53.0737971432 +41 07 12.900884628 9.15 8.96 8.24 7.78   ~ 1476 2
8 NGC 4789A GiC 12 54 05.248 +27 08 58.67 14.37 14.23 13.95 13.84   ~ 614 1

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