2014AJ....147...60S


C.D.S. - SIMBAD4 rel 1.7 - 2021.04.20CEST06:54:50

2014AJ....147...60S - Astron. J., 147, 60 (2014/March-0)

Extra-nuclear starbursts: young luminous hinge clumps in interacting galaxies.

SMITH B.J., SORIA R., STRUCK C., GIROUX M.L., SWARTZ D.A. and YUKITA M.

Abstract (from CDS):

Hinge clumps are luminous knots of star formation near the base of tidal features in some interacting galaxies. We use archival Hubble Space Telescope (HST) UV/optical/IR images and Chandra X-ray maps along with Galaxy Evolution Explorer UV, Spitzer IR, and ground-based optical/near-IR images to investigate the star forming properties in a sample of 12 hinge clumps in five interacting galaxies. The most extreme of these hinge clumps have star formation rates of 1-9 M/yr, comparable to or larger than the "overlap" region of intense star formation between the two disks of the colliding galaxy system the Antennae. In the HST images, we have found remarkably large and luminous sources at the centers of these hinge clumps. These objects are much larger and more luminous than typical "super star clusters" in interacting galaxies, and are sometimes embedded in a linear ridge of fainter star clusters, consistent with star formation along a narrow caustic. These central sources have FWHM diameters of ∼70 pc, compared to ∼3 pc in "ordinary" super star clusters. Their absolute I magnitudes range from MI∼ - 12.2 to -16.5; thus, if they are individual star clusters they would lie near the top of the "super star cluster" luminosity function of star clusters. These sources may not be individual star clusters, but instead may be tightly packed groups of clusters that are blended together in the HST images. Comparison to population synthesis modeling indicates that the hinge clumps contain a range of stellar ages. This is consistent with expectations based on models of galaxy interactions, which suggest that star formation may be prolonged in these regions. In the Chandra images, we have found strong X-ray emission from several of these hinge clumps. In most cases, this emission is well-resolved with Chandra and has a thermal X-ray spectrum, thus it is likely due to hot gas associated with the star formation. The ratio of the extinction-corrected diffuse X-ray luminosity to the mechanical energy rate (the X-ray production efficiency) for the hinge clumps is similar to that in the Antennae galaxies, but higher than those for regions in the normal spiral galaxy NGC 2403. Two of the hinge clumps have point-like X-ray emission much brighter than expected for hot gas; these sources are likely "ultra-luminous X-ray sources" due to accretion disks around black holes. The most extreme of these sources, in Arp 240, has a hard X-ray spectrum and an absorbed X-ray luminosity of ∼2x1041 erg/s; this is above the luminosity expected by single high mass X-ray binaries (HMXBs), thus it may be either a collection of HMXBs or an intermediate mass black hole ( ≥ 80 M).

Abstract Copyright:

Journal keyword(s): galaxies: individual (Arp 82, Arp 240, Arp 244, Arp 256, Arp 270, NGC 2207, NGC 2403) - galaxies: interactions - galaxies: starburst

Nomenclature: Tables 1-12: [SSS2014] Arp NNN-N N=11, [SSS2014] NGC NNNN-N N=1.

Simbad objects: 52

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Number of rows : 52

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 [SSS2014] Arp 256-1 HII 00 18 49.80 -10 21 33.8           ~ 1 0
2 MCG-02-01-052 EmG 00 18 50.152 -10 21 41.49   13 13.60 14.13   ~ 52 3
3 MCG-02-01-051 EmG 00 18 50.898 -10 22 36.49   14.81 14.33     ~ 124 3
4 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 9762 1
5 NAME Magellanic Clouds GrG 03 00 -71.0           ~ 5906 1
6 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 15298 1
7 NAME 30 Dor Nebula SFR 05 38 36.0 -69 05 11           ~ 1064 2
8 [SSS2014] NGC 2207-1 HII 06 16 15.90 -21 22 02.6           ~ 1 0
9 NGC 2207 IG 06 16 22.093 -21 22 21.80   11.48 10.65 10.21 11.9 ~ 264 3
10 IC 2163 IG 06 16 27.9664196735 -21 22 33.143354242   12.55   11.28   ~ 147 2
11 [S75b] NGC 2403 7 HII 07 36 28.6 +65 33 49           ~ 10 0
12 NGC 2403 AGN 07 36 51.396 +65 36 09.17 9.31 8.84 8.38 8.19   ~ 1646 1
13 NGC 2444 IG 07 46 53.0544219571 +39 01 55.099880919   13.1       ~ 99 1
14 NGC 2535 rG 08 11 13.484 +25 12 24.97   13.5 12.60     ~ 165 0
15 [HHS2014] Arp82 N1 HII 08 11 13.9492748615 +25 13 09.579618057           ~ 2 0
16 APG 82 PaG 08 11 14.0 +25 12 25           ~ 144 0
17 NGC 2536 GiP 08 11 15.921 +25 10 45.71   14.8 13.93     ~ 83 0
18 NGC 2992 Sy2 09 45 42.045 -14 19 34.90 13.54 13.14 12.18 12.6 12.2 ~ 804 3
19 NGC 3256 IG 10 27 51.284 -43 54 13.55   11.83 11.33 10.62 11.9 ~ 771 2
20 NAME Great Attractor SCG 10 32 -46.0           ~ 484 0
21 [ZFB2013] 60 HII 10 49 46.60 +32 58 23.9           ~ 3 0
22 [SSS2014] Arp 270-2 HII 10 49 47.50 +32 58 20.3           ~ 1 0
23 [ZFB2013] 29 HII 10 49 48.10 +32 58 25.2           ~ 3 0
24 NGC 3395 GiP 10 49 50.116 +32 58 58.22   12.1 12.10     ~ 258 2
25 [ZFB2013] 5 HII 10 49 51.20 +32 59 11.7           ~ 3 0
26 APG 270 PaG 10 49 52.5 +32 59 20           ~ 184 0
27 NGC 3396 GiP 10 49 55.939 +32 59 26.44   12.6 12.50     ~ 198 1
28 UGC 5984 Sy2 10 52 14.9479230618 +30 03 28.363011795   14.6       ~ 69 0
29 APG 24 G 10 54 40.1 +56 59 11           ~ 80 0
30 NGC 3561 LIN 11 11 13.2 +28 41 47   14.7       ~ 197 2
31 NGC 4016 IG 11 58 29.017 +27 31 43.60   14.6       ~ 68 0
32 NAME Antennae IG 12 01 53.170 -18 52 37.92           ~ 1581 0
33 [BCE2005] 157 Cl* 12 01 54.89 -18 53 04.9     23.5     ~ 21 0
34 [BCE2005] 136 PoG 12 01 54.9 -18 53 04           ~ 35 0
35 M 61 Sy2 12 21 54.9275149050 +04 28 25.588335799 10.07 10.18 9.65     ~ 902 2
36 NAME Vir I ClG 12 26 32.1 +12 43 24   10.00 8.49     ~ 6013 0
37 NAME SHAPLEY-CENTAURUS CL SCG 13 06.0 -33 04           ~ 521 0
38 M 51 GiP 13 29 52.698 +47 11 42.93   9.26 8.36 8.40   ~ 3923 4
39 NGC 5257 H2G 13 39 52.273 +00 50 22.48   13.7 12.99     ~ 187 0
40 [SSS2014] Arp 240-1 HII 13 39 52.30 +00 50 22.8           ~ 1 0
41 [SSS2014] Arp 240-2 HII 13 39 52.50 +00 50 17.3           ~ 1 0
42 [SSS2014] Arp 240-3 HII 13 39 52.9459525412 +00 50 12.414064923           ~ 1 0
43 [SSS2014] Arp 240-4 HII 13 39 53.60 +00 50 28.6           ~ 1 0
44 APG 240 PaG 13 39 55.06 +00 50 06.4   12.6       ~ 149 0
45 [SSS2014] Arp 240-5 HII 13 39 57.20 +00 49 46.8           ~ 1 0
46 NGC 5258 GiP 13 39 57.675 +00 49 51.49   13.8 12.83     ~ 162 0
47 M 101 GiP 14 03 12.583 +54 20 55.50   8.46 7.86 7.76   ~ 2621 2
48 NGC 5461 HII 14 03 40.96 +54 19 02.4           ~ 178 0
49 NGC 7252 IG 22 20 44.7751096408 -24 40 41.905677809 12.26 12.46 12.06 11.57   ~ 670 1
50 NAME Stephan's Quintet CGG 22 35 57.5 +33 57 36           ~ 381 1
51 NGC 7714 GiP 23 36 14.099 +02 09 18.07   14.91 14.36     ~ 739 1
52 APG 284 PaG 23 36 19 +02 09.3   12.6       ~ 605 0

    Equat.    Gal    SGal    Ecl

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2021.04.20-06:54:50

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