# 1999A&AS..134..437D

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 Query : 1999A&AS..134..437D

1999A&AS..134..437D - Astron. Astrophys., Suppl. Ser., 134, 437-451 (1999/February-1)

Structure and kinematics of the peculiar galaxy NGC 128.

D'ONOFRIO M., CAPACCIOLI M., MERLUZZI P., ZAGGIA S. and BOULESTEIX J.

Abstract (from CDS):

This is a multiband photometric and spectroscopic study of the peculiar S0 galaxy NGC 128. We present results from broad (B and R) and narrow (Hα) band optical CCD photometry, near (NIR) and far (FIR) infrared observations, long slit spectroscopy, and Fabry-Perot interferometry (CIGALE). The peculiar peanut shape morphology of the galaxy is observed both at optical and near-infrared wavelengths. The stellar disk is thick and distorted (arc-bended), with a color asymmetry along the major axis due to the presence of a large amount of dust, estimated through NIR and FIR data of ∼6x106M, in the region of interaction with the companion galaxy NGC 127. The color maps are nearly uniform over the whole galaxy, but for the major axis asymmetry, and a small gradient toward the center indicating the presence of a redder disk-like component. The Hα image indeed reveals the existence of a tilted gaseous disk'' around the center, oriented with the major axis toward the companion galaxy NGC 127. Long slit and CIGALE data confirm the presence of gas in a disk-like component counter-rotating and inclined approximately of 50° to the line of sight. The mass of the gas disk in the inner region is ∼2.7x104M. The stellar velocity field is cylindrical up to the last measured points of the derived rotation curves, while the velocity dispersion profiles are typical for an S0 galaxy, but for an extended constant behaviour along the minor axis.

Journal keyword(s): galaxies: individual: NGC 128 - galaxies: elliptical and lenticular, cD - galaxies: photometry - galaxies: kinematics and dynamics - galaxies: structure

Full paper

 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 - 2023
#notes
1 NGC 26 GiP 00 10 25.8802950840 +25 49 54.906561264   13.9       ~ 83 2
2 NGC 125 GiG 00 28 50.1691483224 +02 50 19.608028008   14.2       ~ 48 0
3 NGC 127 GiG 00 29 12.3965930472 +02 52 21.239050224   13.2       ~ 40 1
4 NGC 128 GiG 00 29 15.0429950112 +02 51 50.564329164   13.2       ~ 198 0
5 NGC 130 GiG 00 29 18.5409015096 +02 52 13.502672292   15       ~ 36 0
6 * 50 Cet * 01 35 58.9697335800 -15 24 00.656206380   6.650 5.402     K1.5III 56 0
7 * zet Sct SB* 18 23 39.5786582280 -08 56 04.151632668   5.619 4.664     G9-IIIbFe-0.5 78 0
8 * kap Aqr PM* 22 37 45.3804916 -04 13 40.993883   6.174 5.030     K1.5IIIbCN0.5 83 0

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2023.04.01-16:32:51

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