2004MNRAS.348..857H

Query : 2004MNRAS.348..857H

2004MNRAS.348..857H - Mon. Not. R. Astron. Soc., 348, 857-865 (2004/March-1)

A sample of radio-loud QSOs at redshift ∼ 4.

HOLT J., BENN C.R., VIGOTTI M., PEDANI M., CARBALLO R., GONZALEZ-SERRANO J.I., MACK K.-H. and GARCIA B.

Abstract (from CDS):

We obtained spectra of 60 red, star-like objects (E < 18.8) identified with FIRST radio sources, S1.4GHz> 1 mJy. Eight are quasi-stellar objects (QSOs) with redshift z > 3.6. Combined with our earlier pilot search, our sample of 121 candidates yields a total of 18 z > 3.6 QSOs (10 of these with z > 4.0). 8 per cent of candidates with S1.4GHz< 10 mJy and 37 per cent of candidates with S1.4GHz> 10 mJy are QSOs with z > 3.6. The surface density of E < 18.8, S1.4GHz> 1 mJy, z > 4 QSOs is 0.003/deg2. This is currently the only well-defined sample of radio-loud QSOs at z ~ 4 selected independently of radio spectral index. The QSOs are highly luminous in the optical (eight have MB< -28, q0= 0.5, H0= 50 km/s/Mpc ). The SEDs are as varied as those seen in optical searches for high-redshift QSOs, but the fraction of objects with weak (strongly self-absorbed) Lyα emission is marginally higher (3 out of 18) than for high-redshift QSOs from SDSS (5 out of 96).

Abstract Copyright: 2004 RAS

Journal keyword(s): quasars: emission lines - quasars: general - early Universe - radio continuum: galaxies

VizieR on-line data: <Available at CDS (J/MNRAS/348/857): table1.dat table2.dat>

Simbad objects: 78

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Number of rows : 78
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] J072518.3+370517 QSO 07 25 18.21 +37 05 19.3   24.32 21.09 19.5 18.7 ~ 11 0
2 QSO J0747+2739 QSO 07 47 11.1466907592 +27 39 03.365989812     17.20     ~ 74 0
3 QSO J0831+5245 QSO 08 31 41.7108197808 +52 45 17.616994560   19.2   14.5 13.9 ~ 574 1
4 [VV2006] J083946.1+511203 QSO 08 39 46.2164854008 +51 12 02.827270296   22.29 20.66 18.9 18.3 ~ 72 1
5 [VV98] J085336.6+174348 QSO 08 53 36.6539822400 +17 43 47.922158388   20.10 19.83 18.4   ~ 21 1
6 2MASS J09014615+1502220 LM* 09 01 46.1385269712 +15 02 21.782391360       18.6   M1V 3 0
7 2MASS J09122099+1418478 * 09 12 20.9886599568 +14 18 47.906785368       18.4   ~ 1 0
8 2MASS J09173342+0856315 LM* 09 17 33.4315883448 +08 56 31.492008636   21.6   17.9   M1V 4 0
9 [VV2006] J091824.4+063654 QSO 09 18 24.3794748888 +06 36 53.419791528   22.23 21.02 19.5 18.6 ~ 56 1
10 2MASS J09272010+1425490 LM* 09 27 20.1070624656 +14 25 49.031566212       18.7   M4V 3 0
11 NVSS J092900+162808 rG 09 29 00.393 +16 28 06.41       17.0   ~ 2 0
12 [VV2006] J094119.3+511932 QSO 09 41 19.4276768616 +51 19 32.885710356   20.65 19.06 18.02   ~ 11 0
13 NVSS J094139+353235 rG 09 41 39.7080501767 +35 32 33.380105077       18.8   ~ 1 0
14 NVSS J094428+064148 rG 09 44 28.41931 +06 41 44.4156       18.6   ~ 2 0
15 2MASS J09473428-0151320 * 09 47 34.2954725136 -01 51 32.082958404   21.6   18.4   ~ 1 0
16 2MASS J09515378+0052050 LM* 09 51 53.7896693064 +00 52 04.937727288   21.9   18.6   M4V 4 0
17 QSO B0958+210 BLL 10 01 42.4110018648 +20 48 18.289244880     19.84 18.6   ~ 33 0
18 NVSS J100834+355126 rG 10 08 34.9659863966 +35 51 23.186719379       18.6   ~ 2 0
19 NVSS J101308+082716 Rad 10 13 08.362 +08 27 15.97       18.7   ~ 1 0
20 QSO J1013+0650 QSO 10 13 47.2971641808 +06 50 15.660024468   20.59 19.63     ~ 42 0
21 FIRST J102442.5+561125 rG 10 24 42.51398 +56 11 25.6324       18.7   ~ 1 0
22 FIRST J102506.4+191544 rG 10 25 06.4544986310 +19 15 44.646379646       18.6   ~ 1 0
23 QSO B1050-0000 QSO 10 53 20.4267162840 -00 16 49.652922360   22.49 20.77     ~ 65 0
24 QSO J1057+4555 QSO 10 57 56.2610108784 +45 55 53.070401748   20.19 18.80 17.2 16.8 ~ 118 0
25 FIRST J110719.8+151621 * 11 07 19.811 +15 16 21.15   21.0   18.0   ~ 1 0
26 FIRST J110925.0+121031 * 11 09 25.066 +12 10 31.43   21.4   18.3   ~ 1 0
27 2MASS J11220948+0213361 LM* 11 22 09.4901949192 +02 13 36.219484704       17.9   M4V 6 0
28 NVSS J113457+123221 rG 11 34 58.1507179344 +12 32 21.119093196   21.3   18.0   ~ 3 0
29 NVSS J120209+313037 Rad 12 02 09.493 +31 30 40.85       18.7   ~ 1 0
30 FIRST J120501.3+142831 Rad 12 05 01.368 +14 28 32.04   21.9   18.7   ~ 1 0
31 [VV2006] J121134.4+322616 QSO 12 11 34.3938963360 +32 26 15.208899756   21.87 20.55 19.2 18.5 ~ 21 0
32 2MASS J12130688+1343062 * 12 13 06.8731075200 +13 43 06.466027908   21.5   18.4   ~ 1 0
33 [VV2006] J122016.8+112628 QSO 12 20 16.8740525760 +11 26 28.076103816   19.78 18.98 18.1   ~ 30 0
34 [VV2006] J122027.9+261904 QSO 12 20 27.9578921016 +26 19 03.507369204   20.12 19.16     ~ 29 0
35 QSO B1236-003 QSO 12 39 32.7686234136 -00 38 38.152570884   18.85 18.47 18.4   ~ 20 0
36 NVSS J123957+424059 rG 12 39 56.8128075664 +42 41 00.163377235       18.8   ~ 1 0
37 NVSS J125356+005242 Rad 12 53 56.351 +00 52 41.57       18.7   ~ 1 0
38 FIRST J125504.5+431037 rG 12 55 04.5699895425 +43 10 38.020647358       18.8   ~ 1 0
39 FIRST J125527.7+551818 rG 12 55 27.6717940012 +55 18 18.707125766       18.6   ~ 1 0
40 FIRST J130038.8-033516 rG 13 00 38.8603543920 -03 35 17.071371924   20.5   17.4   ~ 3 0
41 FIRST J130053.5-031127 rG 13 00 53.5013635741 -03 11 27.978857943   21.0   18.0   ~ 1 0
42 [VV2000] J130348.9+002010 QSO 13 03 48.9439829880 +00 20 10.472010216   21.33 20.00     ~ 46 0
43 FIRST J130622.0+033606 rG 13 06 21.99802 +03 36 06.4220       18.4   ~ 1 0
44 [VV2006] J130940.6+573309 QSO 13 09 40.6881155592 +57 33 09.929512008   21.94 20.68 19.5   ~ 40 0
45 FIRST J131043.4+433905 rG 13 10 43.43064 +43 39 04.7700       18.6   ~ 1 0
46 FIRST J131851.6-005323 Rad 13 18 51.674 -00 53 23.27   22.1   18.5   ~ 1 0
47 [VV2006] J132512.5+112330 QSO 13 25 12.4927366824 +11 23 29.838681816   22.66 20.95     ~ 60 0
48 2MASS J13265857+1735145 LM* 13 26 58.5634251480 +17 35 14.445751920   20.4   17.2   M1V 3 0
49 FIRST J133229.0+263433 rG 13 32 29.0471252580 +26 34 33.053884240       18.8   ~ 2 0
50 FIRST J133943.3+403425 rG 13 39 43.39584 +40 34 25.5684       18.7   ~ 1 0
51 FIRST J134314.1+220846 rG 13 43 14.2095763992 +22 08 45.830695603       18.4   ~ 1 0
52 FIRST J134907.1-022325 rG 13 49 07.1456645513 -02 23 25.207878161       18.0   ~ 1 0
53 [VV2006] J140012.1+172001 QSO 14 00 12.0452905176 +17 20 01.461275736           ~ 19 0
54 [VV2000] J141205.8-010152 QSO 14 12 05.7973815360 -01 01 52.767128748   21.03 19.76     ~ 19 0
55 FIRST J141359.1+025526 rG 14 13 59.17 +02 55 26.5   21.0   17.9   ~ 3 0
56 FIRST J142055.0+211029 rG 14 20 54.98294 +21 10 29.3176       18.1   ~ 1 0
57 [VV2006] J142308.0+224219 QSO 14 23 08.2380679776 +22 41 58.095930660       19.9 20.1 ~ 11 1
58 FIRST J142801.1+254540 rG 14 28 01.1579200236 +25 45 40.128024964       18.7   ~ 1 0
59 NVSS J143222+483442 rG 14 32 22.221 +48 34 42.74       18.8   ~ 3 0
60 NVSS J143325+373901 Rad 14 33 23.778 +37 39 09.83           ~ 3 1
61 2MASS J14490016+0737363 LM* 14 49 00.1657976040 +07 37 36.415393032       18.5   M4V 3 0
62 FIRST J145243.7+012733 rG 14 52 43.7483658360 +01 27 33.086240100       18.5   ~ 5 0
63 2MASS J14534676+3553111 LM* 14 53 46.7805677016 +35 53 11.409874548       18.8   M0V 4 0
64 QSO J1502+4837 QSO 15 02 26.8997425752 +48 37 11.336800512   19.58 19.28 18.24   ~ 47 1
65 FIRST J151107.2+114558 rG 15 11 07.1932616067 +11 45 58.438522748       18.8   ~ 1 0
66 2MASS J15145015+0636046 LM* 15 14 50.1640059192 +06 36 04.715546544   20.5   17.2   M3V 3 0
67 FIRST J151643.6+222045 Rad 15 16 43.687 +22 20 45.65           ~ 1 0
68 FIRST J153422.2+185124 rG 15 34 22.2357496045 +18 51 25.161763889   21.6   18.4   ~ 1 0
69 2MASS J15395924-0215102 * 15 39 59.2455446904 -02 15 10.085146128       18.3   ~ 1 0
70 NVSS J154520+102852 rG 15 45 19.941 +10 28 54.78       18.8   ~ 1 0
71 VLSS J1603.0+1443 * 16 03 05.1297459216 +14 43 41.883722652   20.6   17.5   ~ 4 2
72 2MASS J16235772+2350113 LM* 16 23 57.7281879312 +23 50 11.348353032       18.8   M3V 4 0
73 QSO J1624+3758 QSO 16 24 53.4799442184 +37 58 06.649886388   19.62 19.05 18.47   ~ 53 0
74 [VV2006] J163950.5+434004 QSO 16 39 50.5194357432 +43 40 03.701223408   19.59 18.67 17.8 17.4 ~ 45 1
75 FIRST J164006.1+173848 Rad 16 40 06.102 +17 38 48.71   21.2   18.2   ~ 1 0
76 2MASS J16415314+1255129 LM* 16 41 53.1454696416 +12 55 12.676048392   21.2   17.8   M2V 5 0
77 NVSS J164820+503903 rG 16 48 20.3975 +50 39 03.274       18.8   ~ 5 1
78 FIRST J170001.3+192930 rG 17 00 01.27573 +19 29 31.2758       18.7   ~ 1 0

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