Astron. Astrophys. Suppl. Ser.
Volume 134, Number 3, February I 1999
|Page(s)||537 - 543|
|Published online||15 February 1999|
III. A deep IZ survey
Instituto de Astrofísica de Canarias, C/, Vía Láctea s/n, E-38200 La Laguna, Tenerife, Spain
2 Astronomy Group, Department of Physics and Astronomy, University of Leicester, Leicester LE1 7RH, UK
3 Centro Galileo Galilei, Apartado 565, E-38700 Santa Cruz de La Palma, Islas Canarias, Spain
4 Astrophysics Research Institute, Liverpool John Moores University, Liverpool L3 3AF, UK
Corresponding author: Send offprint request to: M.R. Zapatero Osoriomosorio@ll.iac.es
Accepted: 16 September 1998
We present the results of a deep CCD-based IZ photometric survey of a ~ 1 deg2 area in the central region of the Pleiades Galactic open cluster. The magnitude coverage of our survey (from down to 22) allows us to detect substellar candidates with masses between 0.075 and 0.03 . Details of the photometric reduction and selection criteria are given. Finder charts prepared from the I-band images are provided.
Key words: stars: low-mass, brown dwarfs / Galaxy: open clusters and associations: Pleiades catalogs
Based on observations made with the Isaac Newton Teles cope (INT) and the Jacobus Kaptein Telescope (JKT) operated on the island of La Palma by the Isaac Newton Group at the Observatorio del Roque de los Muchachos of the Instituto de Astrofísica de Canarias; and on observations made with the Nordic Optical Telescope (NOT) at the same observatory.
© European Southern Observatory (ESO), 1999