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most citedA quadruply imaged quasar with an optical Einstein ring candidate: 1RXS J113155.4-123155

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astro-ph2005★ 51 cited

The first wide ultracool binary dwarf in the field: DENIS-J055146.0-443412.2 (M8.5 + L0)

M. Billeres, X. Delfosse, J. -L. Beuzit +3

We present observations of a new very low mass field binary, discovered during an infrared imaging survey of 250 DENIS L and very late-M dwarfs. DENIS-J055146.0-443412.2 is an M8.5…