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Brown Dwarfs in the Pleiades Cluster. III. A deep IZ survey
M. R. Zapatero Osorio, R. Rebolo, E. L. Martin +5
We present the results of a deep CCD-based IZ photometric survey of a ~1 sq. deg area in the central region of the Pleiades Galactic open cluster. The magnitude coverage of our sur…
The First L-type Brown Dwarf in the Pleiades
E. L. Martin, G. Basri, M. R. Zapatero Osorio +2
We have obtained low-resolution optical spectra of three faint brown dwarf candidates in the Pleiades open cluster. The objects observed are Roque 12 (I=18.5), Roque 5 (I=19.7) and…
A brown dwarf candidate in the Praesepe Open Cluster
A. Magazzu, R. Rebolo, M. R. Zapatero Osorio +2
We present optical and infrared observations of RPr1, a faint (I = 21.01) and very red object (I - K = 4.57) discovered in a deep CCD survey, covering an area of 800 square arcmin…