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

Bart Pindor; Daniel J. Eisenstein; Michael D. Greeg; Robert H. Becker; Naohisa Inada; Masamune Oguri; Patrick B. Hall; David E. Johnston; Gordon T. Richards; Donald P. Schneider; Edwin L. Turner; Guido Brasi; Philip M. Hinz; Matthew A. Kenworthy; Doug Miller; J. C. Barentine; Howard J. Brewington; J. Brinkmann; Michael Harvanek; S. J. Kleinman; Jurek Krzesinski; Dan Long; Eric H. Neilsen; Peter R. Newman; Atsuko Nitta; Stephanie A. Snedden; Donald G. York

doi:10.1086/497965

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

Bart Pindor, Daniel J. Eisenstein, Michael D. Greeg, Robert H. Becker, Naohisa Inada, Masamune Oguri, Patrick B. Hall, David E. Johnston, Gordon T. Richards, Donald P. Schneider, Edwin L. Turner, Guido Brasi, Philip M. Hinz, Matthew A. Kenworthy, Doug Miller, J. C. Barentine, Howard J. Brewington, J. Brinkmann, Michael Harvanek, S. J. KleinmanJurek Krzesinski, Dan Long, Eric H. Neilsen, Peter R. Newman, Atsuko Nitta, Stephanie A. Snedden, Donald G. York

Astrophysical Sciences

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Abstract

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.

Original language	English (US)
Pages (from-to)	41-48
Number of pages	8
Journal	Astronomical Journal
Volume	131
Issue number	1
DOIs	https://doi.org/10.1086/497965
State	Published - Jan 2006

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

Keywords

Gravitational lensing
Quasars: general

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10.1086/497965

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Pindor, B., Eisenstein, D. J., Greeg, 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., ... York, D. G. (2006). SDSS J102111.02+491330.4: A newly discovered gravitationally lensed quasar. Astronomical Journal, 131(1), 41-48. https://doi.org/10.1086/497965

@article{470154b40d7b460c910bfa717a3188e0,

title = "SDSS J102111.02+491330.4: A newly discovered gravitationally lensed quasar",

abstract = "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.",

keywords = "Gravitational lensing, Quasars: general",

author = "Bart Pindor and Eisenstein, {Daniel J.} and Greeg, {Michael D.} and Becker, {Robert H.} and Naohisa Inada and Masamune Oguri and Hall, {Patrick B.} and Johnston, {David E.} and Richards, {Gordon T.} and Schneider, {Donald P.} and Turner, {Edwin L.} and Guido Brasi and Hinz, {Philip M.} and Kenworthy, {Matthew A.} and Doug Miller and Barentine, {J. C.} and Brewington, {Howard J.} and J. Brinkmann and Michael Harvanek and Kleinman, {S. J.} and Jurek Krzesinski and Dan Long and Neilsen, {Eric H.} and Newman, {Peter R.} and Atsuko Nitta and Snedden, {Stephanie A.} and York, {Donald G.}",

year = "2006",

month = jan,

doi = "10.1086/497965",

language = "English (US)",

volume = "131",

pages = "41--48",

journal = "Astronomical Journal",

issn = "0004-6256",

publisher = "American Astronomical Society",

number = "1",

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Pindor, B, Eisenstein, DJ, Greeg, MD, Becker, RH, Inada, N, Oguri, M, Hall, PB, Johnston, DE, Richards, GT, Schneider, DP, Turner, EL, Brasi, G, Hinz, PM, Kenworthy, MA, Miller, D, Barentine, JC, Brewington, HJ, Brinkmann, J, Harvanek, M, Kleinman, SJ, Krzesinski, J, Long, D, Neilsen, EH, Newman, PR, Nitta, A, Snedden, SA & York, DG 2006, 'SDSS J102111.02+491330.4: A newly discovered gravitationally lensed quasar', Astronomical Journal, vol. 131, no. 1, pp. 41-48. https://doi.org/10.1086/497965

TY - JOUR

T1 - SDSS J102111.02+491330.4

T2 - A newly discovered gravitationally lensed quasar

AU - Pindor, Bart

AU - Eisenstein, Daniel J.

AU - Greeg, Michael D.

AU - Becker, Robert H.

AU - Inada, Naohisa

AU - Oguri, Masamune

AU - Hall, Patrick B.

AU - Johnston, David E.

AU - Richards, Gordon T.

AU - Schneider, Donald P.

AU - Turner, Edwin L.

AU - Brasi, Guido

AU - Hinz, Philip M.

AU - Kenworthy, Matthew A.

AU - Miller, Doug

AU - Barentine, J. C.

AU - Brewington, Howard J.

AU - Brinkmann, J.

AU - Harvanek, Michael

AU - Kleinman, S. J.

AU - Krzesinski, Jurek

AU - Long, Dan

AU - Neilsen, Eric H.

AU - Newman, Peter R.

AU - Nitta, Atsuko

AU - Snedden, Stephanie A.

AU - York, Donald G.

PY - 2006/1

Y1 - 2006/1

N2 - 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.

AB - 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.

KW - Gravitational lensing

KW - Quasars: general

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U2 - 10.1086/497965

DO - 10.1086/497965

M3 - Article

AN - SCOPUS:31544450311

SN - 0004-6256

VL - 131

SP - 41

EP - 48

JO - Astronomical Journal

JF - Astronomical Journal

IS - 1

ER -

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

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