2009AJ....138.1529U

Query : 2009AJ....138.1529U

2009AJ....138.1529U - Astron. J., 138, 1529-1538 (2009/November-0)

Radio emission from young supernovae and supernova remnants in Arp 299.

ULVESTAD J.S.

Abstract (from CDS):

We have made sensitive milliarcsecond-resolution radio images of the nearby merger galaxy Arp 299 at four epochs spread over 18 months between 2003 and 2005. The combined data revealed a total of 30 point sources in the two primary merger nuclei. Twenty-five of these are found in the northeastern nucleus (component "A" = IC 694) over a region ∼100 pc in diameter, while five are in the southwestern nucleus (component "B1" = NGC 3690) within a region ∼30 pc in size. These objects are interpreted as young supernovae and supernova remnants; the ratio of the source counts in nuclei A and B1 is approximately equal to the ratio of their predicted supernova rates. An approximate luminosity function has been derived for nucleus A, and indicates that it might contain as many as 500-1000 compact radio sources more powerful than Cassiopeia A; the integrated flux density of these sources would be about 20% of the total flux density seen at lower resolution. A new supernova occurred in nucleus B1 in the first half of 2005, having a peak radio power at least 2000 times the present power of Cas A. This supernova is located within 0.4 pc (projected distance) of an apparently older supernova remnant, making it very likely that this indicates the presence of a massive super star cluster within nucleus B1. Comparison of the typical radio flux densities of our compact radio sources to the observed X-ray luminosities of nuclei A and B1 indicates that it is possible that one radio source in each nucleus actually could be associated with an active galactic nucleus rather than being a supernova remnant.

Abstract Copyright: ∼

Journal keyword(s): galaxies: evolution - galaxies: individual (Arp 299, NGC 3690, IC 694) - galaxies: starburst - radio continuum: galaxies - supernovae: general

Nomenclature: Tables 3-4: [U2009] SS.sss+SS.ss N=31.

Simbad objects: 51

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Number of rows : 51
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 NGC 253 SyG 00 47 33.134 -25 17 19.68   8.03   6.94 8.1 ~ 3588 2
2 RMC 136 Cl* 05 38 42.396 -69 06 03.36   5.81 5.40     ~ 2236 2
3 RMC 136a Cl* 05 38 43.3 -69 06 08           ~ 158 2
4 PG 0851+202 BLL 08 54 48.8749846272 +20 06 30.639583620   15.649 15.146 15.446   ~ 2513 1
5 4C 39.25 Bla 09 27 03.01394144 +39 02 20.8518067   17.17 17.00 16.486   ~ 1036 1
6 M 82 AGN 09 55 52.430 +69 40 46.93 9.61 9.30 8.41     ~ 6156 6
7 NGC 3256 Sy2 10 27 51.284 -43 54 13.55   11.83 11.33 10.62 11.9 ~ 920 2
8 7C 112451.20+570647.00 Bla 11 27 40.1372 +56 50 14.772   19.0 19.0 20.10   ~ 98 1
9 6C 112519+594222 Bla 11 28 13.34067181 +59 25 14.7985568   19.78 19.56 19.33   ~ 109 1
10 IC 694 AG? 11 28 27.312 +58 34 42.29   18.2       ~ 258 2
11 [U2009] 30.975+40.83 Rad 11 28 30.9753 +58 33 40.828           ~ 1 0
12 [U2009] 30.983+40.87 Rad 11 28 30.9827 +58 33 40.867           ~ 1 0
13 NGC 3690 IG 11 28 31.0 +58 33 41   13.19 12.86     ~ 1015 4
14 [U2009] 30.987+40.78 Rad 11 28 30.9873 +58 33 40.784           ~ 1 0
15 NAME Arp 299-B AT1 Rad 11 28 30.9875529 +58 33 40.783601           ~ 39 0
16 [U2009] 30.995+40.78 Rad 11 28 30.9948 +58 33 40.776           ~ 1 0
17 GSW B1 PoG 11 28 31.0 +58 33 41           ~ 39 1
18 GSW D PoG 11 28 33.01 +58 33 36.6           ~ 9 1
19 [U2009] 33.011+36.55 PoG 11 28 33.0109 +58 33 36.549           ~ 1 0
20 SN 2005U SN* 11 28 33.22 +58 33 42.5           SNIIb 36 1
21 [U2009] 33.594+46.56 Rad 11 28 33.5941 +58 33 46.560           ~ 1 0
22 [U2009] 33.599+46.64 Rad 11 28 33.5992 +58 33 46.637           ~ 1 0
23 [U2009] 33.612+46.70 Rad 11 28 33.6124 +58 33 46.696           ~ 3 0
24 [U2009] 33.615+46.67 Rad 11 28 33.6154 +58 33 46.667           ~ 2 0
25 [U2009] 33.617+46.72 Rad 11 28 33.6173 +58 33 46.724           ~ 2 0
26 [U2009] 33.618+46.70 Rad 11 28 33.6175 +58 33 46.695           ~ 1 0
27 [U2009] 33.619+46.46 Rad 11 28 33.6194 +58 33 46.463           ~ 1 0
28 [U2009] 33.620+46.70 Rad 11 28 33.6200 +58 33 46.699           ~ 1 0
29 [U2009] 33.621+46.60 SN* 11 28 33.6209 +58 33 46.597           ~ 4 0
30 [U2009] 33.621+46.71 Rad 11 28 33.6212 +58 33 46.707           ~ 1 0
31 [U2009] 33.622+46.66 Rad 11 28 33.6218 +58 33 46.655           ~ 1 0
32 [U2009] 33.624+46.77 Rad 11 28 33.6241 +58 33 46.771           ~ 2 0
33 [U2009] 33.627+46.44 Rad 11 28 33.6267 +58 33 46.440           ~ 2 0
34 [U2009] 33.628+46.62 Rad 11 28 33.6280 +58 33 46.623           ~ 2 0
35 [U2009] 33.629+46.65 Rad 11 28 33.6290 +58 33 46.647           ~ 2 0
36 [U2009] 33.630+46.79 Rad 11 28 33.6301 +58 33 46.786           ~ 1 0
37 [U2009] 33.631+46.40 Rad 11 28 33.6305 +58 33 46.402           ~ 1 0
38 [U2009] 33.631+46.62 Rad 11 28 33.6307 +58 33 46.620           ~ 1 0
39 [U2009] 33.636+46.68 Rad 11 28 33.6356 +58 33 46.677           ~ 1 0
40 [U2009] 33.636+46.86 Rad 11 28 33.6361 +58 33 46.863           ~ 1 0
41 [U2009] 33.639+46.55 Rad 11 28 33.6391 +58 33 46.550           ~ 1 0
42 [U2009] 33.640+46.58 Rad 11 28 33.6402 +58 33 46.580           ~ 1 0
43 [U2009] 33.644+46.63 Rad 11 28 33.6442 +58 33 46.628           ~ 1 0
44 [U2009] 33.650+46.59 SN* 11 28 33.6495 +58 33 46.589           ~ 4 0
45 [U2009] 33.650+46.54 Rad 11 28 33.6501 +58 33 46.537           ~ 1 0
46 [ZWM2003] 16 PoG 11 28 33.7 +58 33 47           ~ 40 1
47 NAME Antennae IG 12 01 53.170 -18 52 37.92           ~ 1749 0
48 NAME Hubble Deep Field reg 12 36 49.5 +62 12 58           ~ 1967 1
49 US 371 BLL 13 10 28.66385420 +32 20 43.7828340   15.61 15.24 17.91   ~ 917 1
50 IC 1127 SyG 15 34 57.22396 +23 30 11.6084   14.76 13.88     ~ 3090 4
51 NAME Cas A SNR 23 23 26.0 +58 48 41     14.30     ~ 3033 1

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