2013A&A...557A..59B


C.D.S. - SIMBAD4 rel 1.7 - 2019.08.21CEST06:18:47

2013A&A...557A..59B - Astronomy and Astrophysics, volume 557A, 59-59 (2013/9-1)

VLT/VIMOS integral field spectroscopy of luminous and ultraluminous infrared galaxies: 2D kinematic properties.

BELLOCCHI E., ARRIBAS S., COLINA L. and MIRALLES-CABALLERO D.

Abstract (from CDS):

(Ultra) Luminous infrared galaxies [(U)LIRGs] host the most extreme star-forming events in the present universe and are places where a significant fraction of the past star formation beyond z ∼1 has occurred. The kinematic characterization of this population is important to constrain the processes that govern such events. We present and discuss the 2D kinematic properties of the ionized gas (Hα) in sample local (U)LIRGs, for which relatively high linear resolution and signal-to-noise (S/N) ratio can be obtained. We have obtained Very Large Telescope VIMOS optical integral field spectroscopy (IFS) for 38 local (z<0.1) (U)LIRGs (31 LIRGs and 7 ULIRGs, 51 individual galaxies). This sample covers well the less studied LIRG luminosity range, and it includes the morphological types corresponding to the different phases along the merging process (i.e., isolated disks, interacting and merging systems). The vast majority of objects have two main kinematically distinct components. One component (i.e., narrow or systemic) extends over the whole line-emitting region and is characterized by small-to-intermediate velocity dispersions (i.e., σ from 30 to 160km/s). The second component (broad) has a larger velocity dispersion (up to 320km/s); it is mainly found in the inner regions and is generally blueshifted with respect to the systemic component. The largest extensions and extreme kinematic properties are observed in interacting and merging systems, and they are likely associated with nuclear outflows. The systemic component traces the overall velocity field, showing a large variety of kinematic 2D structures, from very regular velocity patterns typical of pure rotating disks (29%) to kinematically perturbed disks (47%) and highly disrupted and complex velocity fields (24%). Thus, most of the objects (76%) are dominated by rotation. We find that rotation is more relevant in LIRGs than in ULIRGs. There is a clear correlation between the different phases of the merging process and the mean kinematic properties inferred from the velocity maps. In particular, isolated disks, interacting galaxies, and merging systems define a sequence of increasing mean velocity dispersion and decreasing velocity field amplitude, characterized by average dynamical ratios (vshear*/ σmean) of 4.7, 3.0 and 1.8, respectively. We also find that the σcentralmean vs. σmean plane is an excellent discriminating plane between disks and interacting/merging systems: disks show a mean ratio a factor of 2 larger than those characterizing the other two classes. The LIRGs classified as isolated disks have similar velocity amplitudes but larger mean velocity dispersions (44 vs. 24km/s) than local spirals, implying a larger turbulence and thicker disks. Interacting systems and mergers have values closer to those of low velocity dispersion elliptical/lenticular galaxies (E/SOs). The subclass of (U)LIRGs classified as mergers have kinematical properties similar to those shown by the Lyman break analogs (LBAs), although the dynamical mass of LBAs is five times lower on average. Therefore, despite the difference in mass and dust content, the kinematics of these two local populations appears to have significantly noncircular motions. These motions may be induced by the tidal forces, producing dynamically hot systems. The dynamical masses range from ∼0.04m* to 1.4m* (i.e., m*=1.4x1011M), with ULIRGs being more massive (i.e., ∼0.5±0.2m*) than LIRGs by, on average, a factor of about 2. The mass ratio of individual pre-coalescence galaxies is <2.5 for most of the systems, confirming that most (U)LIRG mergers involve sub-m* galaxies of similar mass.

Abstract Copyright:

Journal keyword(s): Galaxy: evolution - Galaxy: kinematics and dynamics

Simbad objects: 48

goto Full paper

goto View the reference in ADS

Number of rows : 48

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2019
#notes
1 ESO 244-12 PaG 01 18 08.31 -44 27 43.4           ~ 82 1
2 MCG-07-03-014 GiP 01 18 08.370 -44 27 43.29   14.43   13.06   ~ 70 0
3 NGC 633 EmG 01 36 23.418 -37 19 17.64   13.50   12.50   ~ 74 1
4 ESO 297-12 EmG 01 36 24.1494524571 -37 20 25.707473821   15.06   13.76 14.7 ~ 39 1
5 NGC 1614 AGN 04 34 00.027 -08 34 44.57   14.66 13.99     ~ 591 0
6 2MASX J05210136-2521450 Sy2 05 21 01.3987198411 -25 21 45.269338983   15.47 14.75     ~ 415 0
7 2MASX J06025406-7103104 LIN 06 02 54.066 -71 03 10.48   15.6       ~ 75 1
8 IRAS 06076-2139 EmG 06 09 45.7859423135 -21 40 23.516504022   15.64   14.46   ~ 57 0
9 2MASX J06210118-6317238 Sy2 06 21 01.188 -63 17 23.81   16.70   15.27   ~ 56 1
10 ESO 255-7 IG 06 27 22.588 -47 10 46.45   14.48   13.60   ~ 60 0
11 ESO 557-2 EmG 06 31 47.217 -17 37 17.09   15.03   13.21   ~ 53 0
12 IRAS 06592-6313 G 06 59 40.2744312709 -63 17 53.028333205   15.61   14.28   ~ 46 0
13 2MASX J07032428-6015221 Sy2 07 03 24.2520923348 -60 15 22.465765682   16.02   14.72   ~ 48 1
14 NGC 2369 GiG 07 16 37.753 -62 20 37.51   13.23   11.56 12.3 ~ 109 0
15 2MASX J08370182-4954302 G 08 37 01.827 -49 54 30.27           ~ 47 0
16 ESO 432-6 IG 08 44 28 -31 41.8   16.4       ~ 27 0
17 ESO 60-16 G 08 52 30.77 -69 01 59.8           ~ 39 0
18 2MASX J08523204-6901557 G 08 52 32.047 -69 01 55.74   16.01   15.17   ~ 30 0
19 NAME IRAS F08572+3915 NW LIN 09 00 25.364 +39 03 54.23     16.66     ~ 358 1
20 2MASX J09041268-3627007 G 09 04 12.689 -36 27 00.76           ~ 63 0
21 IC 563 IG 09 46 20.361 +03 02 43.86   14.7       ~ 70 1
22 IC 564 rG 09 46 21.094 +03 04 16.86   14.1       ~ 75 0
23 NGC 3110 H2G 10 04 02.124 -06 28 29.12   13.4   13.3 12.5 ~ 136 3
24 IC 2545 IG 10 06 04.581 -33 53 05.55   15.27 14.27 14.25   ~ 92 0
25 NGC 3256 IG 10 27 51.284 -43 54 13.55   11.83 11.33 10.62 11.9 ~ 729 2
26 ESO 264-36 GiG 10 43 07.676 -46 12 44.50   14.34   12.55   ~ 62 0
27 ESO 264-57 G 10 59 01.794 -43 26 25.81   15.02   13.22   ~ 60 0
28 ESO 319-22 G 11 27 54.0796301424 -41 36 52.248094984   14.56   16.21   ~ 48 0
29 ESO 320-30 H2G 11 53 11.722 -39 07 48.72   13.30   11.86   ~ 143 1
30 ESO 440-58 IG 12 06 51.8 -31 56 47   15.44   14.89   ~ 49 0
31 ESO 267-30 G 12 14 12.839 -47 13 43.42   14.20   12.69 12.9 ~ 63 0
32 2MASX J12142211-5632332 G 12 14 22.0941848886 -56 32 33.341502495   16.8       ~ 47 0
33 MCG-02-33-098 G 13 02 19.5 -15 46 05   14       ~ 75 0
34 MCG-02-33-099 GiG 13 02 20.372 -15 45 59.49   18   13.16   ~ 25 0
35 ESO 507-70 SyG 13 02 52.354 -23 55 17.65   14.77 14.78 13.24   ~ 97 0
36 NGC 5135 Sy2 13 25 44.059 -29 50 01.24   12.58 13.35 11.53 12.2 ~ 410 1
37 IC 4518 Sy2 14 57 45.6 -43 07 58   14.5       ~ 62 0
38 IC 4553 SyG 15 34 57.22396 +23 30 11.6084   14.76 13.88     ~ 2602 4
39 LEDA 59990 H2G 17 16 35.7 -10 20 38   15.53       ~ 104 0
40 6dFGS gJ172322.0-001701 LIN 17 23 21.943 -00 17 00.96   15.1       ~ 364 0
41 IC 4686 G 18 13 38.7780782848 -57 43 57.282812413   14.67   13.52   ~ 52 1
42 IC 4687 AGN 18 13 39.829 -57 43 31.25   14.35 14.3 12.78   ~ 112 1
43 IC 4689 IG 18 13 40.334 -57 44 54.25   15.07   13.48   ~ 39 0
44 2MASX J21161852-4433374 G 21 16 18.5751356914 -44 33 37.140155607   17.48   16.24   ~ 24 1
45 NGC 7130 AGN 21 48 19.490 -34 57 04.73   12.86 13.87 11.57   ~ 372 0
46 IC 5179 EmG 22 16 09.1156883076 -36 50 37.102745221   12.29 11.89 11.38   ~ 168 1
47 NAME South America H2G 22 51 49.307 -17 52 23.96   16.97       ~ 280 3
48 ESO 148-2 Sy2 23 15 46.772 -59 03 15.94   14.94 14.73 13.95   ~ 229 1

    Equat.    Gal    SGal    Ecl

To bookmark this query, right click on this link: simbad:objects in 2013A&A...557A..59B and select 'bookmark this link' or equivalent in the popup menu


2019.08.21-06:18:47

© Université de Strasbourg/CNRS

    • Contact