2015MNRAS.451..936S


C.D.S. - SIMBAD4 rel 1.7 - 2021.04.14CEST13:26:32

2015MNRAS.451..936S - Mon. Not. R. Astron. Soc., 451, 936-973 (2015/July-3)

The BaLROG project - I. Quantifying the influence of bars on the kinematics of nearby galaxies.

SEIDEL M.K., FALCON-BARROSO J., MARTINEZ-VALPUESTA I., DIAZ-GARCIA S., LAURIKAINEN E., SALO H. and KNAPEN J.H.

Abstract (from CDS):

We present the BaLROG (Bars in Low Redshift Optical Galaxies) sample of 16 morphologically distinct barred spirals to characterize observationally the influence of bars on nearby galaxies. Each galaxy is a mosaic of several pointings observed with the integral-field unit (IFU) SAURON leading to a tenfold sharper spatial resolution ( ∼ 100 pc) compared to ongoing IFU surveys. In this paper we focus on the kinematic properties. We calculate the bar strength Q__b from classical torque analysis using 3.6-µm Spitzer (S4G) images, but also develop a new method based solely on the kinematics. A correlation between the two measurements is found and backed up by N-body simulations, verifying the measurement of Q__b. We find that bar strengths from ionized gas kinematics are ∼ 2.5 larger than those measured from stellar kinematics and that stronger bars have enhanced influence on inner kinematic features. We detect that stellar angular momentum `dips' at 0.2±0.1 bar lengths and half of our sample exhibits an anticorrelation of h3-stellar velocity (v/σ) in these central parts. An increased flattening of the stellar σ gradient with increasing bar strength supports the notion of bar-induced orbit mixing. These measurements set important constraints on the spatial scales, namely an increasing influence in the central regions (0.1-0.5 bar lengths), revealed by kinematic signatures due to bar-driven secular evolution in present-day galaxies.

Abstract Copyright: © 2015 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2015)

Journal keyword(s): techniques: spectroscopic - galaxies: bulges - galaxies: evolution - galaxies: formation - galaxies: kinematics and dynamics - galaxies: structure

Simbad objects: 20

goto Full paper

goto View the reference in ADS

Number of rows : 20

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 NGC 936 GiP 02 27 37.462 -01 09 22.61   11.1   9.98 10.7 ~ 338 0
2 NGC 1015 G 02 38 11.565 -01 19 07.02   12.8   12.4 12.5 ~ 97 0
3 NGC 2543 GiP 08 12 57.955 +36 15 16.23   12.70       ~ 139 1
4 NGC 2712 G 08 59 30.458 +44 54 50.40   12.30       ~ 159 0
5 NGC 2859 G 09 24 18.549 +34 30 48.16   11.8       ~ 238 0
6 NGC 2893 G 09 30 16.9562425723 +29 32 23.883900204   13.6 13.11     ~ 110 1
7 NGC 2962 GiP 09 40 53.9319870230 +05 09 57.021439517   13.1       ~ 183 0
8 NGC 2959 LIN 09 45 08.9686370564 +68 35 40.410309061   13.68 12.69     ~ 36 0
9 NGC 3485 AGN 11 00 02.3709567995 +14 50 29.981834008   12.8       ~ 109 0
10 NGC 3504 LIN 11 03 11.191 +27 58 20.77   13.48 12.93     ~ 492 2
11 NGC 4245 GiG 12 17 36.7828268294 +29 36 28.901023066   12.4       ~ 168 0
12 NGC 4262 GiG 12 19 30.582 +14 52 39.78 13.00 12.49 11.55     ~ 333 1
13 NGC 4267 GiG 12 19 45.2726273070 +12 47 53.701823615   12.4       ~ 228 0
14 NGC 4394 GiP 12 25 55.6370604801 +18 12 50.115665445   11.9       ~ 338 0
15 NAME Vir I ClG 12 26 32.1 +12 43 24   10.00 8.49     ~ 6009 0
16 NGC 4643 LIN 12 43 20.134 +01 58 42.24   11.9       ~ 245 0
17 NGC 5350 GiP 13 53 21.584 +40 21 50.24   12.4   10.99   ~ 203 0
18 NGC 5375 LIN 13 56 56.0065978386 +29 09 51.651196095   12.78 12.08 11.65 11.65 ~ 112 1
19 NGC 5701 GiG 14 39 11.0762411300 +05 21 48.498854025 12.03 11.76 10.88     ~ 226 1
20 NGC 5875 Sy2 15 09 13.202 +52 31 41.90   13.4       ~ 56 0

    Equat.    Gal    SGal    Ecl

To bookmark this query, right click on this link: simbad:objects in 2015MNRAS.451..936S and select 'bookmark this link' or equivalent in the popup menu


2021.04.14-13:26:32

© Université de Strasbourg/CNRS

    • Contact