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Brown dwarfs and very low‐mass stars: variability in the Pleiades
Author(s) -
MoralesCalderón M.,
Barrado y Navascués D.,
Caballero J. A.,
Martín E. L.
Publication year - 2005
Publication title -
astronomische nachrichten
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.394
H-Index - 63
eISSN - 1521-3994
pISSN - 0004-6337
DOI - 10.1002/asna.200510475
Subject(s) - pleiades , physics , photometry (optics) , brown dwarf , stars , astrophysics , astronomy , open cluster , star cluster , differential rotation , stellar rotation , cluster (spacecraft) , low mass , computer science , programming language
We present the results of the optical photometric observations of the Pleiades (125 Myr) cluster. The aim of this research is to look for variability, both due to rotation of single stars and the presence of eclipsing binaries. We have used differential photometry and two different methods of statistical analysis of the data.We have found variability in the Pleiades cluster with amplitudes of about 50 mmag and uncertainties of 5 mmag until I=17.9, well within the brown dwarf regime. (© 2005 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)