SIMBAD references

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.

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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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