2005MNRAS.359..827R

Query : 2005MNRAS.359..827R

2005MNRAS.359..827R - Mon. Not. R. Astron. Soc., 359, 827-834 (2005/May-3)

The 18-cm light curves of the luminous radio supernova candidates in Arp 220.

ROVILOS E., DIAMOND P.J., LONSDALE C.J., SMITH H.E. and LONSDALE C.J.

Abstract (from CDS):

We present multi-epoch observations of Arp 220 with the VLBA and focus on the continuum emission from the luminous radio supernovae (RSNe) whose 1.6-GHz light curves are shown. The supernovae seem to be generally stable or only slowly decaying in flux with time, a result which deviates from the model of Type IIn RSNe. Hints of new eruptions confirm that they are indeed new sources and not supernova remnants, which could be several hundred years old. The slow decay of the sources for which monitoring data were available forces us to reconsider the starburst model for Arp 220 and adopt a more modest value of 0.7/yr for the supernova rate based on these new eruptions. The starburst efficiency should also be modified accordingly which gives rise to the issue of an active nucleus once more. The question is raised whether it is the starburst which creates this active nucleus, something which could affect the evolution of starburst galaxies as a group.

Abstract Copyright: 2005 RAS

Journal keyword(s): supernovae: general - galaxies: active - galaxies: individual: Arp 220 - galaxies: starburst - radio continuum: galaxies

Nomenclature: Fig.1, Table 1: [RDL2005] AN (Nos S0, S1, T0, T2, T4).

CDS comments: Source 1613+341: probably SAX J1613.7+3412 ?

Simbad objects: 29

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Number of rows : 29
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 NGC 253 SyG 00 47 33.134 -25 17 19.68   8.03   6.94 8.1 ~ 3336 2
2 ZW III 35 Sy2 01 44 30.516 +17 06 09.18   15.24 14.81     ~ 249 0
3 SN 1986J SN* 02 22 31.33 +42 19 56.4   18.4 18.4     SNII 322 1
4 M 81 Sy2 09 55 33.1726556496 +69 03 55.062505368   7.89 6.94     ~ 4450 3
5 M 82 AGN 09 55 52.430 +69 40 46.93 9.61 9.30 8.41     ~ 5860 6
6 NGC 3448 AG? 10 54 39.240 +54 18 18.82   12.2       ~ 220 1
7 SN 1979C SN* 12 22 58.58 +15 47 52.7   11.6       SNIIL 585 1
8 Mrk 231 Sy1 12 56 14.2341182928 +56 52 25.238373852   14.68 13.84     ~ 1988 3
9 [RDL2005] T2 SN* 13 34 57.23 +23 30 11.3           ~ 1 0
10 [RDL2005] S0 SN* 15 34 57.2069 +23 30 11.357           ~ 1 0
11 [LDT2006] W42 SNR 15 34 57.21230 +23 30 11.4820           ~ 10 0
12 [LDT2006] W39 SNR 15 34 57.2171 +23 30 11.485           ~ 9 0
13 [RDL2005] T4 SN* 15 34 57.2184 +23 30 11.319           ~ 1 0
14 [LDT2006] W33 Rad 15 34 57.2200 +23 30 11.491           ~ 9 0
15 [LDT2006] W30 SNR 15 34 57.2214 +23 30 11.402           ~ 7 0
16 [SLL98] Arp 220 NW 9 Rad 15 34 57.223 +23 30 11.33           ~ 4 0
17 [RDL2005] T0 SN* 15 34 57.2235 +23 30 11.307           ~ 1 0
18 IC 4553 SyG 15 34 57.22396 +23 30 11.6084   14.76 13.88     ~ 2961 4
19 [SLL98] Arp 220 NW 8 Rad 15 34 57.224 +23 30 11.38           ~ 3 0
20 [LDT2006] W18 SNR 15 34 57.2240 +23 30 11.546           ~ 10 0
21 [LDT2006] W17 SNR 15 34 57.2241 +23 30 11.519           ~ 10 0
22 [LLD98] W1 Mas 15 34 57.2246 +23 30 11.564           ~ 6 0
23 [SLL98] Arp 220 NW 5 Rad 15 34 57.225 +23 30 11.43           ~ 3 0
24 [RDL2005] S1 SN* 15 34 57.2256 +23 30 11.383           ~ 1 0
25 [LDT2006] W10 SNR 15 34 57.2307 +23 30 11.502           ~ 8 0
26 [LDT2006] W8 SNR 15 34 57.2361 +23 30 11.432           ~ 7 0
27 [SLL98] Arp 220 NW 2 Rad 15 34 57.237 +23 30 11.45           ~ 4 0
28 [SLL98] Arp 220 NW 1 Rad 15 34 57.240 +23 30 11.44           ~ 3 0
29 LEDA 2817285 Sy2 21 29 29.4 +25 27 53           ~ 32 0

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