2011A&A...527A..92C


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.04CEST02:49:21

2011A&A...527A..92C - Astronomy and Astrophysics, volume 527A, 92-92 (2011/3-1)

Molecular gas in NUclei of GAlaxies (NUGA). XIV. The barred LINER/Seyfert 2 galaxy NGC 3627.

CASASOLA V., HUNT L.K., COMBES F., GARCIA-BURILLO S. and NERI R.

Abstract (from CDS):

We present 12CO(1-0) and 12CO(2-1) maps of the interacting barred LINER/Seyfert 2 galaxy NGC3627 obtained with the IRAM interferometer at resolutions of 2.1"x1.3" and 0.9"x0.6", respectively. We also present single-dish IRAM 30m 12CO(1-0) and 12CO(2-1) observations used to compute short spacings and complete interferometric measurements. These observations are complemented by IRAM 30m measurements of HCN(1-0) emission detected in the center of NGC3627. The molecular gas emission shows a nuclear peak, an elongated bar-like structure of ∼18" (∼900pc) diameter in both 12CO maps and, in 12CO(1-0), a two-arm spiral feature from r∼9" (∼450pc) to r∼16" (∼800pc). The inner ∼18" bar-like structure, with a north/south orientation (PA=14°), forms two peaks at the extremes of this elongated emission region. The kinematics of the inner molecular gas shows signatures of non-circular motions associated both with the 18'' bar-like structure and the spiral feature detected beyond it. The 1.6µm H-band 2MASS image of NGC3627 shows a stellar bar with a PA=-21°, different from the PA (=14°) of the 12CO bar-like structure, indicating that the gas is leading the stellar bar. The far-infrared Spitzer-MIPS 70 and 160µm images of NGC3627 show that the dust emission is intensified at the nucleus and at the ansae at the ends of the bar, coinciding with the 12CO peaks. The GALEX far-ultraviolet (FUV) morphology of NGC3627 displays an inner elongated (north/south) ring delimiting a hole around the nucleus, and the 12CO bar-like structure is contained in the hole observed in the FUV. The torques computed with the HST-NICMOS F160W image and our PdBI maps are negative down to the resolution limit of our images, ∼60pc in 12CO(2-1). If the bar ends at ∼3kpc, coincident with corotation (CR), the torques are negative between the CR of the bar and the nucleus, down to the resolution limit of our observations. This scenario is compatible with a recently-formed rapidly rotating bar which has had insufficient time to slow down because of secular evolution, and thus has not yet formed an inner Lindblad resonance (ILR). The presence of molecular gas inside the CR of the primary bar, where we expect that the ILR will form, makes NGC3627 a potential smoking gun of inner gas inflow. The gas is fueling the central region, and in a second step could fuel directly the active nucleus.

Abstract Copyright:

Journal keyword(s): galaxies: ISM - galaxies: nuclei - galaxies: active - galaxies: spiral - galaxies: individual: NGC 3627 - galaxies: kinematics and dynamics

Simbad objects: 20

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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 - 2020
#notes
1 M 77 GiP 02 42 40.771 -00 00 47.84 9.70 9.61 8.87 10.1 9.9 ~ 4089 2
2 NGC 1961 LIN 05 42 04.775 +69 22 42.17   11.73 10.99     ~ 304 3
3 NGC 2782 Sy2 09 14 05.120 +40 06 49.68 12.29 12.30 11.63     ~ 431 3
4 M 82 IG 09 55 52.430 +69 40 46.93 9.61 9.30 8.41     ~ 5331 6
5 NGC 3147 Sy2 10 16 53.632 +73 24 02.34   11.43 10.61     ~ 424 2
6 M 65 GiP 11 18 55.957 +13 05 31.96   9.6       ~ 404 1
7 NAME Leo Triplet IG 11 19 +13.2           ~ 102 1
8 M 66 GiP 11 20 15.026 +12 59 28.64 9.85 9.65 8.92     ~ 1158 4
9 NGC 3628 GiP 11 20 17.018 +13 35 22.16   10.42 9.48 9.22   ~ 750 3
10 NAME M 66 Group GrG 11 22.0 +11 55   8.8       ~ 11 0
11 M 100 AGN 12 22 54.9318850854 +15 49 20.294302163 10.04 10.05 9.35     ~ 1646 2
12 3C 273 BLL 12 29 06.6996828061 +02 03 08.598846466   13.05 14.830 14.11   ~ 5316 1
13 M 58 SyG 12 37 43.597 +11 49 05.12 10.80 10.48 9.66     ~ 968 2
14 M 94 SyG 12 50 53.148 +41 07 12.55 9.15 8.96 8.24 7.78   ~ 1216 3
15 M 51 GiP 13 29 52.698 +47 11 42.93   9.26 8.36 8.40   ~ 3781 4
16 NGC 5953 GiP 15 34 32.402 +15 11 37.80   13.23 12.45     ~ 336 1
17 QSO B1546+0246 QSO 15 49 29.43684301 +02 37 01.1634197   17.57 17.42 15.53   ~ 316 1
18 NGC 6574 GiG 18 11 51.2462161679 +14 58 54.740459628   12.5       ~ 169 0
19 NGC 6951 Sy2 20 37 14.1181441937 +66 06 20.078027288   11.64 10.65     ~ 497 2
20 3C 454.3 QSO 22 53 57.74798 +16 08 53.5611   16.57 16.10 15.22   ~ 2505 2

    Equat.    Gal    SGal    Ecl

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2020.07.04-02:49:21

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