2002MNRAS.334..209M

Query : 2002MNRAS.334..209M

2002MNRAS.334..209M - Mon. Not. R. Astron. Soc., 334, 209-218 (2002/July-3)

Spectroscopic detection of quasars in the 2dF Galaxy Redshift Survey.

MADGWICK D.S., HEWETT P.C., MORTLOCK D.J. and LAHAV O.

Abstract (from CDS):

The 100000 spectra from the 2 degree Field Galaxy Redshift Survey (2dFGRS) in the 100k Public Data Release represent the largest single compilation of galaxy spectra available. By virtue of its sheer size and the properties of the photometric catalogue that defines the sample, the 2dFGRS is expected to contain a number of potentially interesting objects other than galaxies. A search of the spectra in the 100k Data Release results in a census of 55 candidate high-redshift (z ≥0.3) quasars. One additional 2dFGRS spectrum of a low-redshift galaxy shows an apparent anomalous broad emission feature perhaps indicating the presence of a gravitationally lensed quasar. These objects have been identified primarily using two automated routines that we have developed specifically for this task, one of which uses a matched filter and the other a wavelet transform. A number of the quasar images possess complicated morphologies, suggesting the presence of either diffuse foreground objects along the line of sight or very nearby point sources. The quasar catalogue will form a target list for future absorption and lensing studies, as well as providing an assessment of the loss of quasars with non-stellar images from the companion 2dF QSO Redshift Survey.

Abstract Copyright: 2002 Blackwell Science Ltd

Journal keyword(s): methods: data analysis - techniques: spectroscopic - surveys - quasars: emission lines

Nomenclature: Table 1: 2dFGRS AAWFFFANNN N=55.

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 [VV2006] J001128.7-281123 QSO 00 11 28.6095884472 -28 11 22.480481256   19.444 19.38 19.384   ~ 3 0
2 2dFGRS TGS202Z267 G 00 15 18.37 -27 11 52.3   18.750   18.666   ~ 1 0
3 QSO B0020-408 QSO 00 23 20.0674601712 -40 34 17.490126684     18.8     ~ 10 3
4 [VV2006] J002435.9-123203 QSO 00 24 35.9062885488 -12 32 03.353194140   19.548 19.43 19.431   ~ 3 0
5 [VV2006] J011729.5-391419 QSO 01 17 29.3517564264 -39 14 19.317351336   19.127 19.07 19.067   ~ 3 0
6 [VV2006] J011809.1-290154 QSO 01 18 09.0509221224 -29 01 56.457816816   19.528 19.45 19.453   ~ 3 0
7 [VV2006] J011856.9-272634 QSO 01 18 56.8571701176 -27 26 32.416665540   19.237 18.44 19.174   ~ 4 0
8 [VV2006] J012000.3-405659 QSO 01 20 00.2903941440 -40 56 58.238996496   19.149 18.43 19.084   ~ 4 0
9 [VV2006] J012017.4-274510 QSO 01 20 17.3709721224 -27 45 10.124013636   19.398 19.34 19.340   ~ 3 0
10 [VV2006] J012229.4-083011 QSO 01 22 29.3564843424 -08 30 09.996177204   20.04 19.65 18.976   ~ 3 0
11 [VV2006] J012427.0-473130 QSO 01 24 26.9982067776 -47 31 30.141156576   19.239 19.20 19.202   ~ 3 0
12 [VV2006] J013011.3-475956 QSO 01 30 11.3913301824 -47 59 53.263500108   19.439 19.39 19.388   ~ 3 0
13 [VV2006] J013132.1-283310 QSO 01 31 32.0643278616 -28 33 09.459862776   19.493 19.42 19.422   ~ 3 0
14 2dFGRS TGS306Z029 AGN 02 08 14.0 -28 28 11   19.200 20.22 19.141   ~ 3 0
15 [VV2006] J022812.6-304749 QSO 02 28 12.5891954400 -30 47 49.138589184   19.364 19.30 19.298   ~ 4 0
16 [VV2006] J023859.0-460601 BLL 02 38 59.1465783816 -46 06 00.486315432   19.243 19.17 19.175   ~ 6 1
17 QSO J0245-3007 QSO 02 45 00.7779896232 -30 07 22.354506012   19.414 18.28 19.335   ~ 11 0
18 Ton S 283 QSO 02 48 24.6521344368 -31 33 48.060036540   16.59 16.44 15.53   ~ 9 0
19 [VV2006] J025522.8-324555 QSO 02 55 22.8287659200 -32 45 53.979729228   19.053 19.58 18.966   ~ 3 0
20 [VV2006] J025910.9-314009 QSO 02 59 10.9531547928 -31 40 07.396581828   19.270 18.79 19.214   ~ 3 0
21 [VV2006] J030524.3-244206 QSO 03 05 24.3255913416 -24 42 05.142903228     17.71     ~ 3 0
22 [VV2006] J030743.7-254904 QSO 03 07 43.7684608440 -25 49 03.348677640   19.377 19.48 19.314   ~ 3 0
23 2dFGRS TGS322Z050 AGN 03 31 51.9 -29 00 18   19.146 19.16 19.105   ~ 3 0
24 [VV2006] J035703.5-492541 QSO 03 57 03.5806 -49 25 40.696   19.304 19.25 19.272   ~ 4 0
25 LBQS 1011-0144 QSO 10 14 14.1637398696 -01 59 17.194230168   18.53 18.36 18.683   ~ 25 0
26 [VV2006] J101913.0+012937 QSO 10 19 12.9848320512 +01 29 37.047347880   19.34 18.93 19.314   ~ 22 0
27 [VV2006] J102935.2-012139 QSO 10 29 35.1939927456 -01 21 38.297779632   18.89 18.29 18.501   ~ 12 0
28 [VV2006] J103702.3-014953 QSO 10 37 02.3745996168 -01 49 52.151164392   18.26 18.05 18.548   ~ 3 0
29 [VV2006] J103924.7-034832 QSO 10 39 24.7 -03 48 32   19.033 18.37 18.802   ~ 3 0
30 [VV2006] J110105.4-000156 QSO 11 01 05.4292308048 -00 01 55.319071332   19.03 18.79 19.206   ~ 29 0
31 [VV2006] J112528.4-015130 QSO 11 25 28.4863550400 -01 51 29.449694052   19.59 19.15 19.024   ~ 3 0
32 [VV2006] J113045.9-034630 QSO 11 30 45.8984 -03 46 30.337   19.373 19.25 19.118   ~ 4 0
33 [VV2006] J113409.2-042653 QSO 11 34 09.1853326152 -04 26 52.699487532   19.473 19.08 19.275   ~ 5 0
34 [VV2006] J113433.5-030655 QSO 11 34 33.4553263272 -03 06 54.374063436   19.20 18.89 19.151   ~ 4 0
35 2dFGRS TGN172Z242 QSO 11 35 34.6657557768 -03 43 59.829820716   16.14 15.66 17.291   ~ 5 0
36 [VV2006] J115338.9-041953 QSO 11 53 38.7185742528 -04 19 53.009566572   19.103 19.01 19.011   ~ 4 0
37 2dFGRS TGN120Z045 AGN 12 07 47.7197343888 -03 51 27.186484356   19.404   19.284   ~ 3 0
38 [VV2006] J122018.4-024102 QSO 12 20 18.3803297496 -02 41 00.156186132   18.96 18.78 18.928   ~ 5 0
39 2dFGRS TGN124Z166 AGN 12 26 47.7590368632 -03 25 22.490504004   20.07 19.48 19.151   ~ 6 0
40 [VV2006] J125220.5-003948 QSO 12 52 20.4739006920 -00 39 48.503640240   19.01 18.91 19.203   ~ 28 0
41 [VV2006] J133721.9-022511 QSO 13 37 21.9178 -02 25 11.429   20.09 19.72 18.934   ~ 4 0
42 2MASX J13433953+0046598 BiC 13 43 39.5530137960 +00 47 00.262858452   18.301   18.168   ~ 5 0
43 [VV2006] J135700.5+002628 QSO 13 57 00.3869398656 +00 26 27.309592392   20.03 19.82 18.616   ~ 5 0
44 [VV2006] J141637.9-030131 QSO 14 16 37.9583382720 -03 01 31.583443584   19.72 19.39 19.237   ~ 23 0
45 [VV2006] J143452.7-002827 QSO 14 34 52.7242 -00 28 28.021   19.23 19.04 19.135   ~ 27 0
46 LBQS 1433-0016 Sy1 14 36 24.8146128744 -00 29 05.335284696   18.50 18.13 18.622   ~ 42 0
47 [VV2006] J143859.9-043834 QSO 14 38 59.9180401824 -04 38 33.331944372   18.874 18.53 18.528   ~ 3 0
48 [VV2006] J214645.7-304339 QSO 21 46 45.7 -30 43 39   19.169 19.21 18.587   ~ 3 0
49 [VV2006] J215956.0-241635 QSO 21 59 55.9990627176 -24 16 34.696368372   19.324 19.16 19.162   ~ 3 0
50 [VV2006] J220028.1-251940 QSO 22 00 28.1132912808 -25 19 38.207869356   19.280 18.90 19.148   ~ 3 0
51 2dFGRS TGS061Z180 QSO 22 09 19.0675377912 -24 07 12.458521992   19.204   19.067   ~ 3 0
52 [VV2006] J221044.9-260625 QSO 22 10 44.8696006776 -26 06 24.024227940   19.095 18.64 19.001   ~ 3 0
53 [VV2006] J221218.3-274212 QSO 22 12 18.3200 -27 42 12.442   19.128 19.05 19.045   ~ 4 0
54 [VV2006] J223357.4-254047 QSO 22 33 57.4 -25 40 47   19.355 19.28 19.282   ~ 3 0
55 2dFGRS TGS181Z095 G 22 37 07.18 -28 06 01.0   18.886   18.810   ~ 1 0
56 2dFGRS TGS181Z082 G 22 37 46.78 -28 09 41.9   18.852   18.764   ~ 1 0
57 [VV2006] J223841.0-305129 QSO 22 38 41.0025659760 -30 51 28.310542236   19.333 19.27 19.272   ~ 4 0
58 QSO J2240+0321 QSO 22 40 30.234 +03 21 30.63           ~ 705 1
59 Z 378-15 AGN 22 40 30.23447 +03 21 30.6290           ~ 636 0
60 [VV2006] J230037.6-264436 QSO 23 00 37.75 -26 44 36.1     18.98     ~ 4 3
61 2dFGRS TGS420Z090 G 23 05 44.87 -31 55 39.6   18.383   18.313   ~ 1 0
62 [VV2006] J231140.6-274744 QSO 23 11 40.6574476656 -27 47 44.039660280     16.83     ~ 4 1
63 [VV2006] J015334.3-255216 QSO 23 53 34.2874252896 -25 52 15.427188120   19.231   19.138   ~ 4 3

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