Astronomy and Astrophysics – Astrophysics
Scientific paper
1999-09-20
Astronomy and Astrophysics
Astrophysics
To appear in "Gravitational Lensing: Recent Progress and Future Goals", ASP conference series, eds Brainerd & Kochanek
Scientific paper
The lens candidate RXJ 0921+4529 consists of two z_s=1.66 quasar separated by 6."93 with an H band magnitude difference of \Delta m=1.39. The lens appears to be a z_l=0.31 X-ray cluster, including a m_H=18.5 late-type galaxy lying between the quasar images. We detect an extended source overlapping the faint quasar but not the bright quasar. If this extended source is the host galaxy of the fainter quasar, then the system is a quasar binary rather than a gravitational lens.
Falco Emilio E.
Impey Chris David
Keeton Charles R.
Kochanek Chris S.
Leh'ar Joseph
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