2003A&A...409..469W


C.D.S. - SIMBAD4 rel 1.7 - 2020.09.19CEST04:57:51

2003A&A...409..469W - Astronomy and Astrophysics, volume 409, 469-477 (2003/10-2)

Numerical simulations of central stellar velocity dispersion drops in disc galaxies.

WOZNIAK H., COMBES F., EMSELLEM E. and FRIEDLI D.

Abstract (from CDS):

We present an interpretation of the stellar velocity dispersion drops discovered in the nuclear regions of three barred galaxy hosts of active/starburst galactic nuclei (NGC 1097, NGC 1808 and NGC 5728) by Emsellem et al. (2001A&A...368...52E). Using self-consistent N-body simulations including stars, gas and star formation, we show that young stars born in the nuclear regions from dynamically cold gas have a lower velocity dispersion than the older stellar population. The young population (less than 0.9Gyr old in our models), being more massive and brighter than the older one at near infrared wavelengths, fully dominates the observed line-of-sight kinematics of the circumnuclear regions.

Abstract Copyright:

Journal keyword(s): galaxies: active - galaxies: kinematics and dynamics - galaxies: nuclei - galaxies: Seyfert - galaxies: evolution - galaxies: spiral

Simbad objects: 7

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Number of rows : 7

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 NGC 1097 LIN 02 46 19.059 -30 16 29.68 10.46 9.97 9.48 8.72 9.8 ~ 1181 3
2 NGC 1404 GiP 03 38 51.917 -35 35 39.81 11.53 10.69 10.00 9.03   ~ 673 1
3 NGC 1808 Sy2 05 07 42.343 -37 30 46.98 11.05 10.80 9.94 9.36 10.2 ~ 654 3
4 M 66 GiP 11 20 15.026 +12 59 28.64 9.85 9.65 8.92     ~ 1169 4
5 NGC 4477 Sy2 12 30 02.172 +13 38 11.19 11.98 11.38 10.42     ~ 363 2
6 NGC 5728 Sy2 14 42 23.928 -17 15 11.41   14.34 13.40     ~ 501 0
7 NGC 6503 LIN 17 49 26.4206717057 +70 08 39.587370580 11.56 10.95 10.28 9.92   ~ 472 1

    Equat.    Gal    SGal    Ecl

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2020.09.19-04:57:51

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