2006AJ....131...41P

Query : 2006AJ....131...41P

2006AJ....131...41P - Astron. J., 131, 41-48 (2006/January-0)

SDSS J102111.02+491330.4: a newly discovered gravitationally lensed quasar.

PINDOR B., EISENSTEIN D.J., GREGG M.D., BECKER R.H., INADA N., OGURI M., HALL P.B., JOHNSTON D.E., RICHARDS G.T., SCHNEIDER D.P., TURNER E.L., BRASI G., HINZ P.M., KENWORTHY M.A., MILLER D., BARENTINE J.C., BREWINGTON H.J., BRINKMANN J., HARVANEK M., KLEINMAN S.J., KRZESINSKI J., LONG D., NEILSEN E.H.Jr, NEWMAN P.R., NITTA A., SNEDDEN S.A. and YORK D.G.

Abstract (from CDS):

We report follow-up observations of two gravitational lens candidates identified in the Sloan Digital Sky Survey (SDSS) data set. We have confirmed that SDSS J102111.02+491330.4 is a previously unknown gravitationally lensed quasar. This lens system exhibits two images of a z=1.72 quasar, with an image separation of 1".14±0".04. Optical and near-IR imaging of the system reveals the presence of the lensing galaxy between the two quasar images. Observations of SDSS J112012.12+671116.0 indicate that it is more likely a binary quasar than a gravitational lens. This system has two quasars at a redshift of z=1.49, with an angular separation of 1".49±0".02. However, the two quasars have markedly different spectral energy distributions, and no lens galaxy is apparent in optical and near-IR images of this system. We also present a list of 31 SDSS lens candidates that follow-up observations have confirmed are not gravitational lenses.

Abstract Copyright: ∼

Journal keyword(s): Gravitational Lensing - Galaxies: Quasars: General

Nomenclature: Text: [PEG2006] SDSS J1021+4913. Figs 2, 7, Table 1: [PEG2006] SDSS J1021+4913 A (Nos A-B, G). Figs 3, 8, Table 2: [PEG2006] SDSS J1120+6711 A (Nos A-B).

Simbad objects: 10

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Number of rows : 10
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 [PEG2006] SDSS J1021+4913 B LeQ 10 21 10.94 +49 13 31.2           ~ 1 0
2 [PEG2006] SDSS J1021+4913 G G 10 21 10.99 +49 13 30.9           ~ 1 1
3 [PEG2006] SDSS J1021+4913 gLS 10 21 11.02 +49 13 30.4           ~ 2 0
4 [PEG2006] SDSS J1021+4913 A LeQ 10 21 11.02 +49 13 30.4           ~ 1 0
5 [VV2006] J102111.0+491330 QSO 10 21 11.0253 +49 13 30.344   19.49 19.33     ~ 30 1
6 [VV2006] J112012.1+671116 QSO 11 20 12.0987 +67 11 15.880   19.35 19.00     ~ 26 1
7 [PEG2006] SDSS J1120+6711 A QSO 11 20 12.12 +67 11 16.0           ~ 3 1
8 [PEG2006] SDSS J1120+6711 B QSO 11 20 12.12 +67 11 16.0           ~ 3 1
9 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
10 [VV2006] J160015.5+000045 QSO 16 00 15.5045401344 +00 00 45.412606296   19.69 19.32     ~ 24 1

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