2008AJ....135.1917S

Query : 2008AJ....135.1917S

2008AJ....135.1917S - Astron. J., 135, 1917-1933 (2008/May-0)

A photometric search for transients in galaxy clusters.

SAND D.J., ZARITSKY D., HERBERT-FORT S., SIVANANDAM S. and CLOWE D.

Abstract (from CDS):

We have begun a program to search for supernovae and other transients in the fields of galaxy clusters with the 2.3 m Bok Telescope on Kitt Peak. We present our automated photometric methods for data reduction, efficiency characterization, and initial spectroscopy. With this program, we aim to ultimately identify ∼25-35 cluster Type Ia supernovae (SNe Ia) (∼10 of which will be intracluster, hostless events) and constrain the SN Ia rate associated with old, passive stellar populations. With these measurements we will constrain the relative contribution of hostless and hosted SNe Ia to the metal enrichment of the intracluster medium. In the current work, we have identified a central excess of transient events within 1.25r200 in our cluster fields after statistically subtracting out the "background" transient rate taken from an off-cluster CCD chip. Based on the published rate of SNe Ia for cluster populations we estimate that ∼20% of the excess cluster transients are due to cluster SNe Ia, a comparable fraction to core collapse (CC) supernovae and the remaining are likely to be active galactic nuclei. Interestingly, we have identified three intracluster SN candidates, all of which lay beyond R > r200. These events, if truly associated with the cluster, indicate a large deficit of intracluster (IC) SNe at smaller radii, and may be associated with the IC stars of infalling groups or indicate that the intracluster light (ICL) in the cluster outskirts is actively forming stars which contribute CC SNe or prompt SNe Ia.

Abstract Copyright: ∼

Journal keyword(s): galaxies: clusters: general

VizieR on-line data: <Available at CDS (J/AJ/135/1917): table3.dat table4.dat>

Nomenclature: Tables 3, 4: [SZH2008] JHHMMSS.s+DDMMSS.s N=234+106.

Status at CDS : All or part of tables of objects could be ingested in SIMBAD with priority 2.

CDS comments: Table 5: ID NN are not in SIMBAD, the objects are already in other tables.

Simbad objects: 63

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Number of rows : 63
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 ACO 2703 ClG 00 05 29.30 +16 12 23.5           ~ 54 0
2 ACO 136 ClG 01 04 07.2 +25 00 55           ~ 29 0
3 ACO 267 ClG 01 52 43.016 +00 59 58.90           ~ 241 0
4 ACO 351 ClG 02 25 26.28 -08 44 30.5           ~ 14 0
5 SN 2006ua SN* 02 25 57.010 -08 45 38.36           SNIa 4 1
6 SN 2006ub SN* 02 26 21.340 -08 54 19.82           SNIa 4 1
7 ZwCl 0256+0002 ClG 02 59 33.8 +00 13 45           ~ 20 0
8 ACO 516 ClG 04 50 05 -08 48.9           ~ 14 0
9 ACO 565 ClG 07 08 07.6 +71 51 25           ~ 22 0
10 ACO 572 ClG 07 14 14.9595 +54 41 24.180           ~ 17 0
11 ACO 580 ClG 07 25 57.08 +41 23 05.1           ~ 24 0
12 2MASS J07412972+2557318 Bla 07 41 29.7417750048 +25 57 32.258962692       19.1   ~ 29 1
13 MCXC J0741.5+2557 ClG 07 41 30.2 +25 57 46           ~ 7 0
14 ZwCl 0748+1744 ClG 07 51 23.8 +17 31 15           ~ 17 0
15 ZwCl 0755+5408 ClG 07 59 54.4 +54 01 01           ~ 26 0
16 ACO 616 ClG 08 04 21.05 +46 47 35.6           ~ 17 0
17 ACO 620 ClG 08 05 44.68 +45 41 44.6           ~ 23 0
18 BAX 124.9136+63.6101 ClG 08 19 26.0 +63 37 26           ~ 21 0
19 BAX 125.2599+07.8631 ClG 08 21 02.4 +07 51 47           ~ 72 1
20 ACO 646 ClG 08 22 10.0 +47 05 58           ~ 102 1
21 ACO 655 ClG 08 25 16.12 +47 09 34.2           ~ 118 0
22 ACO 667 ClG 08 28 05.8 +44 46 00           ~ 45 0
23 ACO 665 ClG 08 30 45.2 +65 52 55           ~ 457 0
24 ZwCl 0839+2937 ClG 08 42 55.9 +29 27 26     17.0     ~ 93 0
25 ACO 743 ClG 09 06 44.9 +10 19 02           ~ 28 0
26 ACO 750 ClG 09 09 06.7 +11 01 48           ~ 105 1
27 ACO 795 ClG 09 24 11.26 +14 09 03.5           ~ 120 0
28 ACO 853 ClG 09 42 14.7 +15 22 51           ~ 22 0
29 ACO 868 ClG 09 45 28.1 -08 38 51           ~ 67 0
30 ACO 901 ClG 09 56 09.7 -09 56 17           ~ 113 1
31 MCXC J0958.1+2346 ClG 09 58 10.3 +23 46 55           ~ 10 0
32 BAX 150.1046+44.1539 ClG 10 00 17.91 +44 08 35.8           ~ 40 0
33 ACO 923 ClG 10 06 38.82 +25 54 44.8           ~ 33 0
34 ACO 961 ClG 10 16 39.24 +33 39 44.4           ~ 61 0
35 ACO 990 ClG 10 23 39.46 +49 08 19.6           ~ 88 0
36 ZwCl 1023+1257 ClG 10 25 55.9 +12 41 07           ~ 54 0
37 ACO 1033 ClG 10 31 39.78 +35 05 34.4           ~ 97 0
38 ACO 1045 ClG 10 34 52.19 +30 41 41.5           ~ 37 0
39 ACO 1068 ClG 10 40 47.1 +39 57 19           ~ 232 0
40 ACO 1111 ClG 10 50 36.48 -02 36 16.1           ~ 29 0
41 ACO 1132 ClG 10 58 32.05 +56 47 14.2           ~ 145 1
42 ACO 1201 ClG 11 12 54.4 +13 26 08           ~ 131 1
43 ACO 1204 ClG 11 13 32.2 +17 35 40           ~ 101 0
44 ACO 1235 ClG 11 23 26.10 +19 34 59.9           ~ 59 0
45 ACO 1246 ClG 11 23 57.4 +21 29 14           ~ 118 0
46 ACO 1264 ClG 11 27 01.7 +17 07 44           ~ 39 0
47 ACO 1361 ClG 11 43 45.85 +46 20 51.8           ~ 96 0
48 ACO 1366 ClG 11 44 44.72 +67 24 51.9           ~ 56 0
49 ACO 1413 ClG 11 55 12.87 +23 23 46.9           ~ 456 0
50 ZwCl 1154+2435 ClG 11 56 55.8 +24 15 36           ~ 23 0
51 NAME Virgo Cluster ClG 12 30 47.8 +12 23 07           ~ 7107 0
52 ACO 1553 ClG 12 30 48.000 +10 33 21.60           ~ 95 0
53 ACO 1656 ClG 12 59 44.40 +27 54 44.9           ~ 5141 2
54 ACO 1677 ClG 13 05 52.6 +30 54 06           ~ 70 0
55 ACO 1689 ClG 13 11 29.5 -01 20 28           ~ 1178 0
56 ACO 1902 ClG 14 21 39.7 +37 17 43           ~ 67 0
57 ACO 1914 ClG 14 25 57.4 +37 49 54           ~ 338 0
58 ACO 1930 ClG 14 32 42.6 +31 34 07           ~ 63 0
59 ACO 3627 ClG 16 14 22.5 -60 52 07           ~ 340 2
60 ACO 2218 ClG 16 35 54.0 +66 13 00           ~ 827 1
61 ACO 2259 ClG 17 20 09.2 +27 40 09           ~ 131 0
62 ClG J1750+3504 ClG 17 50 15.9 +35 04 58           ~ 36 0
63 NVSS J175016+350458 rG 17 50 16.8682358184 +35 04 58.558211040           ~ 37 2

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