SDSS J090334.92+502819.2: A new gravitational lens

David E. Johnston; Gordon T. Richards; Joshua A. Frieman; Charles R. Keeton; Michael A. Strauss; Gillian R. Knapp; Robert H. Becker; Richard L. White; Eric T. Johnson; Zhaoming Ma; Mark SubbaRao; Neta A. Bahcall; Mariangela Bernardi; Jon Brinkmann; Daniel J. Eisenstein; Masataka Fukugita; Patrick B. Hall; Naohisa Inada; Bartosz Pindor; David J. Schlegel; Ryan Scranton; Erin S. Sheldon; Donald P. Schneider; Alexander S. Szalay; Donald G. York

doi:10.1086/379001

SDSS J090334.92+502819.2: A new gravitational lens

David E. Johnston, Gordon T. Richards, Joshua A. Frieman, Charles R. Keeton, Michael A. Strauss, Gillian R. Knapp, Robert H. Becker, Richard L. White, Eric T. Johnson, Zhaoming Ma, Mark SubbaRao, Neta A. Bahcall, Mariangela Bernardi, Jon Brinkmann, Daniel J. Eisenstein, Masataka Fukugita, Patrick B. Hall, Naohisa Inada, Bartosz Pindor, David J. SchlegelRyan Scranton, Erin S. Sheldon, Donald P. Schneider, Alexander S. Szalay, Donald G. York

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Abstract

We report the discovery of a new gravitationally lensed quasar from the Sloan Digital Sky Survey, SDSS J090334.92+502819.2. This object was targeted for SDSS spectroscopy as a luminous red galaxy, but manual examination of the spectrum showed the presence of a quasar at z ≃ 3.6 in addition to a red galaxy at z = 0.388, and the SDSS image showed a second possible quasar image nearby. Follow-up imaging and spectroscopy confirmed the lensing hypothesis. In images taken at the Astrophysical Research Consortium 3.5 m telescope, two quasars are separated by 2.″8; the lensing galaxy is clearly seen and is blended with one of the quasar images. Spectroscopy taken at the Keck II telescope shows that the quasars have identical red-shifts of z ≃ 3.6, and both show the presence of the same broad absorption line-like troughs. We present simple lens models that account for the geometry and magnifications. The lens galaxy lies near two groups of galaxies and may be a part of them. The models suggest that the groups may contribute considerable shear that has a strong effect on the lens configuration.

Original language	English (US)
Pages (from-to)	2281-2290
Number of pages	10
Journal	Astronomical Journal
Volume	126
Issue number	5 1775
DOIs	https://doi.org/10.1086/379001
State	Published - Nov 2003

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

Keywords

Gravitational lensing
Quasars: individual (SDSS J090334.92+502819.2)

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10.1086/379001

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Johnston, D. E., Richards, G. T., Frieman, J. A., Keeton, C. R., Strauss, M. A., Knapp, G. R., Becker, R. H., White, R. L., Johnson, E. T., Ma, Z., SubbaRao, M., Bahcall, N. A., Bernardi, M., Brinkmann, J., Eisenstein, D. J., Fukugita, M., Hall, P. B., Inada, N., Pindor, B., ... York, D. G. (2003). SDSS J090334.92+502819.2: A new gravitational lens. Astronomical Journal, 126(5 1775), 2281-2290. https://doi.org/10.1086/379001

@article{ae893565133344e7be2dac6d4fe53471,

title = "SDSS J090334.92+502819.2: A new gravitational lens",

abstract = "We report the discovery of a new gravitationally lensed quasar from the Sloan Digital Sky Survey, SDSS J090334.92+502819.2. This object was targeted for SDSS spectroscopy as a luminous red galaxy, but manual examination of the spectrum showed the presence of a quasar at z ≃ 3.6 in addition to a red galaxy at z = 0.388, and the SDSS image showed a second possible quasar image nearby. Follow-up imaging and spectroscopy confirmed the lensing hypothesis. In images taken at the Astrophysical Research Consortium 3.5 m telescope, two quasars are separated by 2.″8; the lensing galaxy is clearly seen and is blended with one of the quasar images. Spectroscopy taken at the Keck II telescope shows that the quasars have identical red-shifts of z ≃ 3.6, and both show the presence of the same broad absorption line-like troughs. We present simple lens models that account for the geometry and magnifications. The lens galaxy lies near two groups of galaxies and may be a part of them. The models suggest that the groups may contribute considerable shear that has a strong effect on the lens configuration.",

keywords = "Gravitational lensing, Quasars: individual (SDSS J090334.92+502819.2)",

author = "Johnston, {David E.} and Richards, {Gordon T.} and Frieman, {Joshua A.} and Keeton, {Charles R.} and Strauss, {Michael A.} and Knapp, {Gillian R.} and Becker, {Robert H.} and White, {Richard L.} and Johnson, {Eric T.} and Zhaoming Ma and Mark SubbaRao and Bahcall, {Neta A.} and Mariangela Bernardi and Jon Brinkmann and Eisenstein, {Daniel J.} and Masataka Fukugita and Hall, {Patrick B.} and Naohisa Inada and Bartosz Pindor and Schlegel, {David J.} and Ryan Scranton and Sheldon, {Erin S.} and Schneider, {Donald P.} and Szalay, {Alexander S.} and York, {Donald G.}",

year = "2003",

month = nov,

doi = "10.1086/379001",

language = "English (US)",

volume = "126",

pages = "2281--2290",

journal = "Astronomical Journal",

issn = "0004-6256",

publisher = "IOP Publishing Ltd.",

number = "5 1775",

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Johnston, DE, Richards, GT, Frieman, JA, Keeton, CR, Strauss, MA, Knapp, GR, Becker, RH, White, RL, Johnson, ET, Ma, Z, SubbaRao, M, Bahcall, NA, Bernardi, M, Brinkmann, J, Eisenstein, DJ, Fukugita, M, Hall, PB, Inada, N, Pindor, B, Schlegel, DJ, Scranton, R, Sheldon, ES, Schneider, DP, Szalay, AS & York, DG 2003, 'SDSS J090334.92+502819.2: A new gravitational lens', Astronomical Journal, vol. 126, no. 5 1775, pp. 2281-2290. https://doi.org/10.1086/379001

TY - JOUR

T1 - SDSS J090334.92+502819.2

T2 - A new gravitational lens

AU - Johnston, David E.

AU - Richards, Gordon T.

AU - Frieman, Joshua A.

AU - Keeton, Charles R.

AU - Strauss, Michael A.

AU - Knapp, Gillian R.

AU - Becker, Robert H.

AU - White, Richard L.

AU - Johnson, Eric T.

AU - Ma, Zhaoming

AU - SubbaRao, Mark

AU - Bahcall, Neta A.

AU - Bernardi, Mariangela

AU - Brinkmann, Jon

AU - Eisenstein, Daniel J.

AU - Fukugita, Masataka

AU - Hall, Patrick B.

AU - Inada, Naohisa

AU - Pindor, Bartosz

AU - Schlegel, David J.

AU - Scranton, Ryan

AU - Sheldon, Erin S.

AU - Schneider, Donald P.

AU - Szalay, Alexander S.

AU - York, Donald G.

PY - 2003/11

Y1 - 2003/11

N2 - We report the discovery of a new gravitationally lensed quasar from the Sloan Digital Sky Survey, SDSS J090334.92+502819.2. This object was targeted for SDSS spectroscopy as a luminous red galaxy, but manual examination of the spectrum showed the presence of a quasar at z ≃ 3.6 in addition to a red galaxy at z = 0.388, and the SDSS image showed a second possible quasar image nearby. Follow-up imaging and spectroscopy confirmed the lensing hypothesis. In images taken at the Astrophysical Research Consortium 3.5 m telescope, two quasars are separated by 2.″8; the lensing galaxy is clearly seen and is blended with one of the quasar images. Spectroscopy taken at the Keck II telescope shows that the quasars have identical red-shifts of z ≃ 3.6, and both show the presence of the same broad absorption line-like troughs. We present simple lens models that account for the geometry and magnifications. The lens galaxy lies near two groups of galaxies and may be a part of them. The models suggest that the groups may contribute considerable shear that has a strong effect on the lens configuration.

AB - We report the discovery of a new gravitationally lensed quasar from the Sloan Digital Sky Survey, SDSS J090334.92+502819.2. This object was targeted for SDSS spectroscopy as a luminous red galaxy, but manual examination of the spectrum showed the presence of a quasar at z ≃ 3.6 in addition to a red galaxy at z = 0.388, and the SDSS image showed a second possible quasar image nearby. Follow-up imaging and spectroscopy confirmed the lensing hypothesis. In images taken at the Astrophysical Research Consortium 3.5 m telescope, two quasars are separated by 2.″8; the lensing galaxy is clearly seen and is blended with one of the quasar images. Spectroscopy taken at the Keck II telescope shows that the quasars have identical red-shifts of z ≃ 3.6, and both show the presence of the same broad absorption line-like troughs. We present simple lens models that account for the geometry and magnifications. The lens galaxy lies near two groups of galaxies and may be a part of them. The models suggest that the groups may contribute considerable shear that has a strong effect on the lens configuration.

KW - Gravitational lensing

KW - Quasars: individual (SDSS J090334.92+502819.2)

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U2 - 10.1086/379001

DO - 10.1086/379001

M3 - Article

AN - SCOPUS:0346308526

SN - 0004-6256

VL - 126

SP - 2281

EP - 2290

JO - Astronomical Journal

JF - Astronomical Journal

IS - 5 1775

ER -

SDSS J090334.92+502819.2: A new gravitational lens

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