2005ApJ...622..106O

Query : 2005ApJ...622..106O

2005ApJ...622..106O - Astrophys. J., 622, 106-115 (2005/March-3)

Discovery of two gravitationally lensed quasars with image separations of 3" from the sloan digital sky survey.

OGURI M., INADA N., HENNAWI J.F., RICHARDS G.T., JOHNSTON D.E., FRIEMAN J.A., PINDOR B., STRAUSS M.A., BRUNNER R.J., BECKER R.H., CASTANDER F.J., GREGG M.D., HALL P.B., RIX H.-W., SCHNEIDER D.P., BAHCALL N.A., BRINKMANN J. and YORK D.G.

Abstract (from CDS):

We report the discovery of two doubly imaged quasars, SDSS J100128.61+502756.9 and SDSS J120629.65+433217.6, at redshifts of 1.838 and 1.789, and with image separations of 2".86 and 2".90, respectively. The objects were selected as lens candidates from the Sloan Digital Sky Survey (SDSS). Based on the identical nature of the spectra of the two quasars in each pair and the identification of the lens galaxies, we conclude that the objects are gravitational lenses. The lenses are complicated; in both systems there are several galaxies in the fields very close to the quasars, in addition to the lens galaxies themselves. The lens modeling implies that these nearby galaxies contribute significantly to the lens potentials. On larger scales, we have detected an enhancement in the galaxy density near SDSS J100128.61+502756.9. The number of lenses with image separation of ∼3" in the SDSS already exceeds the prediction of simple theoretical models based on the standard Λ-dominated cosmology and observed velocity function of galaxies.

Abstract Copyright: ∼

Journal keyword(s): Cosmology: Observations - Cosmology: Theory - Cosmology: Gravitational Lensing - Galaxies: Quasars: Individual: Alphanumeric: SDSS J100128.61+502756.9 - Galaxies: Quasars: Individual: Alphanumeric: SDSS J120629.65+433217.6

Nomenclature: Text: [OIH2005] SDSS JHHMM+DDMM N=2. Table 1: [OIH2005] SDSS JHHMM+DDMM A N=4. Table 2: [OIH2005] SDSS JHHMM+DDMM GN N=5.

Simbad objects: 26

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Number of rows : 26
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] J043814.8-122314 QSO 04 38 14.88 -12 17 14.6     17.15     ~ 245 2
2 QSO J0751+2716 QSO 07 51 41.517 +27 16 31.79     18.7     ~ 86 2
3 QSO J0831+5245 QSO 08 31 41.7108197808 +52 45 17.616994560   19.2   14.5 13.9 ~ 574 1
4 [VV2006] J090334.9+502819 QSO 09 03 34.9475 +50 28 19.293   22.90 21.49     ~ 44 2
5 QSO B0908+0603 QSO 09 11 27.6052 +05 50 54.281   18.44 18.16     ~ 248 2
6 8C 0958+561 QSO 10 01 20.6918953728 +55 53 55.593949272   17.16 16.95     ~ 757 3
7 [OIH2005] SDSS J1001+5027 B LeI 10 01 28.351 +50 27 58.41           ~ 13 0
8 [OIH2005] SDSS J1001+5027 gLS 10 01 28.6 +50 27 57           ~ 19 0
9 [VV2006] J100128.5+502758 QSO 10 01 28.6132 +50 27 56.970   17.90 17.70     ~ 55 1
10 [OIH2005] SDSS J1001+5027 G1 G 10 01 28.6132 +50 27 56.970           ~ 4 1
11 QSO J1004+4112 LeQ 10 04 34.9243842216 +41 12 42.771018060   19.14 19.03     ~ 206 1
12 QSO B1115+080A QSO 11 18 16.951 +07 45 58.23   16.61 16.44     ~ 703 2
13 [OIH2005] SDSS J1206+4332 G2 G 12 06 29.5468 +43 32 23.596           ~ 5 1
14 [OIH2005] SDSS J1206+4332 gLS 12 06 29.6 +43 32 17           ~ 63 0
15 [VV2006] J120629.6+433217 QSO 12 06 29.6568052152 +43 32 17.587941108   17.93 17.74     ~ 48 0
16 [VV2006] J120629.7+433224 QSO 12 06 29.6592513504 +43 32 20.612444496   19.13 18.96     ~ 24 1
17 [OIH2005] SDSS J1206+4332 G1 G 12 06 29.6965 +43 32 19.339           ~ 9 0
18 [OIH2005] SDSS J1206+4332 G3 G 12 06 29.8202 +43 32 19.996           ~ 5 1
19 NVSS J140227+632128 rG 14 02 28.2190035864 +63 21 33.299741304   19.07 17.51   16.33 ~ 30 1
20 PG 1528+062 HS* 15 30 49.9257266448 +06 00 56.275796952 13.424 14.515 14.767 14.878 15.063 sdOB 38 0
21 NVSS J160914+653229 rG 16 09 13.93704 +65 32 27.9024     19.4     ~ 215 0
22 QSO B2016+112B QSO 20 19 18.0 +11 27 13     22.5     ~ 32 0
23 QSO B2016+112 QSO 20 19 18.2 +11 27 14     22.5     ~ 195 1
24 NVSS J211054+213059 Rad 21 10 54.06 +21 30 58.7           ~ 30 1
26 [OIH2005] SDSS J1001+5027 G2 G ~ ~           ~ 3 0

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