2014A&A...571A..98C


Query : 2014A&A...571A..98C

2014A&A...571A..98C - Astronomy and Astrophysics, volume 571A98-98 (2014/11-1)

Three-dimensional decomposition of galaxies with bulge and long bar.

COMPERE P., LOPEZ-CORREDOIRA M. and GARZON F.

Abstract (from CDS):

Some observations indicate that the Milky Way has two inner components, a bulge and a long bar, which present a misalignment of Δα≃20° that is against the predictions of some theoretical models that are based on numerical simulations. We wish to determine whether this misalignment between the bar and the bulge can be observed in barred galaxies other than the Milky Way. Each galaxy of our sample was decomposed based on its Ks-band 2MASS image by fitting and modelling in a three-dimensional (3D) space the following components: a disc, a bar, and a bulge. The χ2 goodness-of-fit estimation allowed retrieving the best-fit angle values for the bar and the bulge to detect any misalignment. From the 3D decomposition of six barred galaxies, we have detected at least three galaxies (NGC 2217, NGC 3992, and NGC 4593) that present a significant misalignment between the bar and the bulge of Δα> 20°.

Abstract Copyright: ∼

Journal keyword(s): galaxies: structure - galaxies: bulges - galaxies: fundamental parameters - Galaxy: structure

Simbad objects: 14

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Number of rows : 14
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 M 31 AGN 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 13622 1
2 NGC 936 EmG 02 27 37.462 -01 09 22.61   11.1   9.98 10.7 ~ 374 0
3 NGC 1433 Sy2 03 42 01.4847418992 -47 13 18.929092656   10.84 9.99 9.61 10.2 ~ 447 0
4 NGC 1512 GiP 04 03 54.281 -43 20 55.86 11.30 11.43 10.54 10.37   ~ 457 1
5 NGC 2217 Sy2 06 21 39.7505036352 -27 14 01.654973556   11.04 11.93 9.78 10.5 ~ 171 0
6 NGC 2523 AG? 08 15 00.1388949576 +73 34 44.302765908   12.4       ~ 95 0
7 M 95 GiP 10 43 57.7313485800 +11 42 13.301191332 10.71 10.51 9.73 9.48   ~ 1238 2
8 M 109 GiG 11 57 35.9631479640 +53 22 29.006082336   10.94   9.57   ~ 483 0
9 NGC 4442 GiG 12 28 03.8815318272 +09 48 13.426522272   11.2       ~ 298 0
10 NGC 4593 Sy1 12 39 39.4435107024 -05 20 39.034988448   13.95 13.15     ~ 1179 0
11 NGC 5746 GiP 14 44 56.005 +01 57 17.06   12.3       ~ 375 0
12 NGC 5850 LIN 15 07 07.6828131840 +01 32 39.513281352   11.5   10.79 11.1 ~ 330 1
13 NGC 5965 SyG 15 34 02.3002830024 +56 41 08.509684740   13.4       ~ 133 0
14 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 16269 0

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