Three quasi-stellar objects acting as strong gravitational lenses
We report the discovery of three new cases of quasi-stellar objects (QSOs) acting as strong gravitational lenses on background emission line galaxies: SDSS J0827+5224 (<i>z<i/><sub>QSO<sub/> = 0.293, <i>z<i/><sub>s<sub/> = 0.412), SDSS J0919+2720 (<...
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| Hauptverfasser: | , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
22 March 2012
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| In: |
Astronomy and astrophysics
Year: 2012, Jahrgang: 540 |
| ISSN: | 1432-0746 |
| DOI: | 10.1051/0004-6361/201118015 |
| Online-Zugang: | Verlag, kostenfrei, Volltext: http://dx.doi.org/10.1051/0004-6361/201118015 Verlag, kostenfrei, Volltext: https://www.aanda.org/articles/aa/abs/2012/04/aa18015-11/aa18015-11.html 
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| Verfasserangaben: | F. Courbin, C. Faure, S.G. Djorgovski, F. Rérat, M. Tewes, G. Meylan, D. Stern, A. Mahabal, T. Boroson, R. Dheeraj, and D. Sluse |
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| 245 | 1 | 0 | |a Three quasi-stellar objects acting as strong gravitational lenses |c F. Courbin, C. Faure, S.G. Djorgovski, F. Rérat, M. Tewes, G. Meylan, D. Stern, A. Mahabal, T. Boroson, R. Dheeraj, and D. Sluse |
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| 520 | |a We report the discovery of three new cases of quasi-stellar objects (QSOs) acting as strong gravitational lenses on background emission line galaxies: SDSS J0827+5224 (<i>z<i/><sub>QSO<sub/> = 0.293, <i>z<i/><sub>s<sub/> = 0.412), SDSS J0919+2720 (<i>z<i/><sub>QSO<sub/> = 0.209, <i>z<i/><sub>s<sub/> = 0.558), SDSS J1005+4016 (<i>z<i/><sub>QSO<sub/> = 0.230, <i>z<i/><sub>s<sub/> = 0.441). The selection was carried out using a sample of 22,298 SDSS spectra displaying at least four emission lines at a redshift beyond that of the foreground QSO. The lensing nature is confirmed from Keck imaging and spectroscopy, as well as from HST/WFC3 imaging in the <i>F475W <i/>and <i>F814W <i/>filters. Two of the QSOs have face-on spiral host galaxies and the third is a QSO+galaxy pair. The velocity dispersion of the host galaxies, inferred from simple lens modeling, is between <i>σ<i/> = 210 and 285 km s<sup>-1<sup/>, making these host galaxies comparable in mass with the SLACS sample of early-type strong lenses. | ||
| 700 | 1 | |a Sluse, Dominique |d 1977- |e VerfasserIn |0 (DE-588)1052421652 |0 (DE-627)788470051 |0 (DE-576)359032656 |4 aut | |
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