2001A&A...376..837H


C.D.S. - SIMBAD4 rel 1.7 - 2021.02.26CET17:21:21

2001A&A...376..837H - Astronomy and Astrophysics, volume 376, 837-852 (2001/9-4)

Atomic and molecular gas in the merger galaxy NGC 1316 (Fornax A) and its environment.

HORELLOU C., BLACK J.H., VAN GORKOM J.H., COMBES F., VAN DER HULST J.M. and CHARMANDARIS V.

Abstract (from CDS):

We present and interpret observations of atomic and molecular gas toward the southern elliptical galaxy NGC 1316 (Fornax A), a strong double-lobe radio source with a disturbed optical morphology that includes numerous shells and loops. The 12CO(1-0), 12CO(2-1), and HI observations were made with SEST and the VLA. CO emission corresponding to a total molecular hydrogen mass of ∼5x108M was detected towards the central position as well as northwest and southeast of the nucleus in the regions of the dust patches. The origin of that gas is likely external and due to accretion of one or several small gas-rich galaxies. HI was not detected in the central region of NGC 1316, but ∼2x107 M of atomic gas was found towards the giant HII region discovered by Schweizer (1980ApJ...237..303S) located 6.7' (or 36.2kpc) from the nucleus. HI was also found at three other locations in the outer part of NGC 1316. The HI distributions and kinematics of the two nearby spiral companions of NGC 1316, NGC 1317 (a barred galaxy to the north) and NGC 1310 (to the west) could be studied. Both galaxies have unusually small HI disks that may have been affected by ram-pressure stripping.

Abstract Copyright:

Journal keyword(s): galaxies: ellipticals - individual (NGC 1316, NGC 1317, NGC 1310) - galaxies: clusters: Fornax cluster - radio lines: galaxies

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 - 2021
#notes
1 3C 48 QSO 01 37 41.2995845985 +33 09 35.079126038   16.62 16.20     ~ 2563 2
2 NGC 1310 EmG 03 21 03.431 -37 06 06.08 12.43 12.98 12.08 12.03   ~ 88 1
3 NGC 1316 GiP 03 22 41.789 -37 12 29.52 9.81 9.15 8.53 7.66   ~ 1227 1
4 NGC 1317 GiP 03 22 44.2812268852 -37 06 13.162532124 12.20 11.78 11.02 10.22   ~ 185 1
5 ACO S 373 ClG 03 38 30 -35 27.3           ~ 1588 0
6 M 87 BiC 12 30 49.42338230 +12 23 28.0438581 10.16 9.59 8.63   7.49 ~ 6348 3
7 NAME Centaurus A Sy2 13 25 27.61509104 -43 01 08.8056025   8.18 6.84 6.66   ~ 4075 3

    Equat.    Gal    SGal    Ecl

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2021.02.26-17:21:21

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