1999A&AS..138..109L

Query : 1999A&AS..138..109L

1999A&AS..138..109L - Astron. Astrophys., Suppl. Ser., 138, 109-117 (1999/July-0)

Identification of active galaxies behind the Coma cluster of galaxies.

LEDOUX C., VALLS-GABAUD D., REBOUL H., ENGELS D., PETITJEAN P. and MOREAU O.

Abstract (from CDS):

We describe the results of an efficient survey to identify bright B≲18 active galactic nuclei (AGN) within ≃4° (4.7h–1Mpc projected radius) of the centre of the Coma cluster of galaxies. The candidates have been carefully selected either as unresolved UV-excess objects with no detected proper motion, or from identifications on objective-prism plates including a few ROSAT sources. A global success rate larger than 30% is achieved. Low-resolution spectra are presented for the extragalactic objects identified in the course of the survey: the sample contains 16 emission-line objects, a BL Lac candidate and an elliptical galaxy. The AGNs of this list are unique targets to study the association of the Lyman-α forest with large-scale structures and galactic haloes at low redshift, to search for warm gas within the Coma cluster and nearby filaments, and for optical monitoring to detect the micro-lensing variability produced by the baryonic dark matter in the cluster.

Abstract Copyright: ∼

Journal keyword(s): quasars: general - quasars: absorption lines - galaxies: Seyfert - galaxies: starburst - techniques: spectroscopic - surveys

Simbad objects: 25

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Number of rows : 25
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 NAME NGP reg 12 51 26.275 +27 07 41.70           ~ 1274 0
2 2MASX J12515430+2604002 GiC 12 51 54.45711 +26 04 00.8195           ~ 14 0
3 A2 117 Sy1 12 52 38.0778722616 +30 02 14.006077332   19.10 18.77     ~ 13 0
4 ACO 1656 ClG 12 59 44.40 +27 54 44.9           ~ 5141 2
5 LEDA 44725 EmG 13 00 14.4574995792 +27 16 50.600408376   15.5       ~ 37 0
6 A2 353 QSO 13 02 03.0854852760 +26 58 09.052906512   17       ~ 28 0
7 A2 390 QSO 13 03 45.9857182176 +26 33 14.072300460   18.1       ~ 34 0
8 PB 3273 QSO 13 04 11.9899066632 +29 53 48.879479652   18 17.85     ~ 21 0
9 QSO J1304+2454 QSO 13 04 51.4174349568 +24 54 45.896816772   17.5       ~ 35 0
10 2MASX J13051685+2613033 Sy1 13 05 16.8359628072 +26 13 03.941784264   18.30 18.00     ~ 22 0
11 HS 1303+2908 HII 13 05 45.1 +28 52 12           ~ 1 0
12 SA 57- reg 13 08 38 +29 23.1           ~ 179 0
13 [VV2000] J130929.0+260750 QSO 13 09 28.9282210032 +26 07 48.494031744   18.15 17.80     ~ 22 0
14 A2 482 QSO 13 09 44.8928185176 +28 27 35.247015216   18.45 18.35     ~ 28 0
15 LB 32 QSO 13 10 28.1572264752 +28 08 35.953361304   18.75 18.64     ~ 30 0
16 PB 3373 QSO 13 10 59.0160124152 +30 01 06.716952732   18.42 18.20     ~ 32 0
17 PB 3380 QSO 13 11 28.4133804528 +31 05 52.194842016   18.22 17.91 17.15   ~ 33 0
18 2MASS J13121925+2549582 BLL 13 12 19.2648352488 +25 49 57.845047620   17.82 17.40     ~ 4 0
19 PB 3412 QSO 13 13 36.2380335528 +29 58 15.237337584   18.59 18.40     ~ 29 0
20 PB 3428 Sy1 13 14 23.5409408016 +27 19 19.996555800   19.02 18.52     ~ 25 1
21 2MASX J13143188+2628309 GiC 13 14 31.9045302168 +26 28 31.274972832           ~ 7 0
22 LEDA 1781947 GiC 13 15 02.1824698320 +26 35 44.008226664           ~ 10 0
23 HZ 44 HS* 13 23 35.2629445608 +36 07 59.544140304 10.186 11.42 11.65 12.00 11.995 sdBN0VIIHe28 439 0
24 ACO 2029 ClG 15 10 54.2 +05 44 23           ~ 1020 0
25 ACO 2255 ClG 17 12 56.0 +64 04 06           ~ 605 0

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