1997A&A...327..479A

Query : 1997A&A...327..479A

1997A&A...327..479A - Astronomy and Astrophysics, volume 327, 479-482 (1997/11-2)

Concentration of quasars around the active extragalactic object 3C 345.

ARP H.

Abstract (from CDS):

It is shown that there is an over density of about a dozen fainter, generally higher redshift quasars around the bright,strongly variable 3C 345. The associated quasars are generally aligned through 3C 345 with an accuracy that is highly improbable to occur by chance. There is a Seyfert 1 galaxy (NGC 6212) within 4.7 arc min of 3C 345, as in many other significant associations of quasars with low redshift galaxies. The excess of quasars around 3C 345 and the Seyfert (a factor of 15) is similar to the excess of quasars around the jet Seyfert NGC1097 (a factor of 20) which was found in 1984. It is noted that at a redshift of z=0.59, 3C 345 is like a number of other bright apparent magnitude quasars of medium redshift which fall significantly close to low redshift, active galaxies and exhibit alignments of X-ray sources and X-ray BSO's and quasars.

Abstract Copyright: ∼

Journal keyword(s): quasars: individual: 3C 345 - galaxies: individual: NGC 6212 - X-rays: galaxies - quasars: general

Nomenclature: Table 1: [A97] JHHMMSS.s+DDMMSS N=37

Simbad objects: 41

goto View the references in ADS

Number of rows : 41
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 1097 LIN 02 46 19.059 -30 16 29.68 10.46 9.97 9.48 8.72 9.8 ~ 1340 3
2 Ton 469 Sy1 09 58 20.9496221568 +32 24 02.208417372   15.88 15.78 15.51   ~ 425 1
3 [VV98] J110525.1+723816 QSO 11 05 25.2613098336 +72 38 17.640110004     20.00     ~ 10 0
4 ICRF J124357.6+162253 Sy1 12 43 57.6491122968 +16 22 53.395049244   19.23 19.00     ~ 312 1
5 [VV96] J163651.3+395605 QSO 16 36 51.2475455208 +39 56 05.809981020   19.62 19.46     ~ 27 0
6 [VV96] J163701.4+393843 QSO 16 37 01.5463366560 +39 38 41.015570280   20.89 20.60     ~ 8 0
7 [VV96] J163749.5+395548 QSO 16 37 49.3574549016 +39 55 48.873652428   19.46 19.23     ~ 27 0
8 QSO B1636+3933 QSO 16 38 15.0509968800 +39 27 31.852478700   19.30 19.15     ~ 30 0
9 [VV96] J163831.6+395030 QSO 16 38 31.4846465208 +39 50 30.813565704   20.06 19.82     ~ 10 0
10 [VV96] J163832.8+395846 QSO 16 38 32.7359099808 +39 58 45.867784188   21.46 21.30     ~ 9 0
11 [VV96] J163848.1+400246 QSO 16 38 47.8876038984 +40 02 45.438013500   20.06 19.63     ~ 30 0
12 [VV96] J163953.7+401406 QSO 16 39 53.7283559136 +40 14 03.731167140   18.5 19.2     ~ 8 0
13 [VV96] J164029.5+400714 QSO 16 40 29.5488980976 +40 07 12.015145560   20.61 20.40     ~ 14 0
14 6C 163852+395305 QSO 16 40 29.63277140 +39 46 46.0284071   18.4 19.37 18.75   ~ 315 2
15 QSO B1638+4002 QSO 16 40 34.0666817976 +39 56 21.928268688   18.79 18.60     ~ 29 0
16 [VV96] J164102.5+400045 QSO 16 41 02.4179198904 +40 00 45.467249256   19.27 19.08     ~ 34 0
17 [VV96] J164130.7+393436 QSO 16 41 30.5778094680 +39 34 34.217774184   19.25 19.09     ~ 31 0
18 QSO B1640+396 QSO 16 41 47.5389998880 +39 35 03.321075804   20.01 19.83     ~ 69 1
19 QSO B1640+401 QSO 16 41 54.2342964648 +40 00 33.127945128   17.6 18.05 17.2   ~ 50 0
20 QSO B1640+3944 QSO 16 42 11.1330669024 +39 38 37.025545776   20.59 20.51     ~ 11 0
21 QSO B1640+400A QSO 16 42 28.0463336904 +39 58 30.284218596   20.66 20.32     ~ 19 0
22 QSO B1640+398 QSO 16 42 28.5228945888 +39 43 43.496675508   19.21 18.85     ~ 38 0
23 QSO B1640+400B QSO 16 42 33.9742538928 +39 58 53.237544312   19.88 19.62     ~ 31 0
24 QSO B1640+395 QSO 16 42 39.2049 +39 27 18.631   19.81 19.47     ~ 11 0
25 QSO B1641+396 QSO 16 42 43.9212805368 +39 35 02.675231628   20.33 20.00     ~ 10 0
26 NAME Her B Sy1 16 42 58.80997043 +39 48 36.9939552   16.81 16.59 16.84   ~ 1724 2
27 QSO B1641+3959 QSO 16 43 11.396 +39 51 12.11   20.20 20.01     ~ 12 0
28 QSO B1641+398 QSO 16 43 19.5282341304 +39 43 39.372981744   21.09 20.82     ~ 13 0
29 NGC 6212 Sy1 16 43 23.1383858952 +39 48 23.179575348   15.0       ~ 69 0
30 QSO B1641+3938 QSO 16 43 25.6585308624 +39 32 35.117036844   19.30 19.30     ~ 12 0
31 QSO B1641+3958 QSO 16 43 26.1469019400 +39 53 14.335117728   18.44 18.32     ~ 39 0
32 QSO B1641+3956 QSO 16 43 27.0950171352 +39 51 25.907617800   19.32 19.06     ~ 33 0
33 QSO B1641+399B QSO 16 43 34.8466896624 +39 53 46.431942720   19.56 19.50     ~ 43 0
34 QSO B1641+4005 QSO 16 43 36.5264629392 +40 00 23.337580392   19.55 19.31     ~ 32 0
35 QSO B1641+4015 QSO 16 43 38.8911015456 +40 09 32.046746796   18.91 18.55     ~ 9 0
36 QSO B1642+398 QSO 16 44 06.6989499360 +39 45 05.227216704   20.2 20.5     ~ 17 0
37 QSO B1642+400 QSO 16 44 15.6089030544 +39 57 15.519464964   19.75 19.45     ~ 28 0
38 [VV96] J164420.8+401128 QSO 16 44 20.8048523640 +40 11 23.279336700   19.15 19.13     ~ 26 0
39 QSO B1642+401 QSO 16 44 40.2199537608 +40 00 37.362453300   19.82 19.31     ~ 11 0
40 QSO B1643+395 QSO 16 45 01.8283569072 +39 25 49.011191148   19.94 19.61     ~ 13 0
41 QSO B1643+400 QSO 16 45 07.3477478616 +39 59 18.834745380   19.60 19.49     ~ 31 0

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