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Variability of L Dwarfs in the Near Infrared

Published online by Cambridge University Press:  26 May 2016

José A. Caballero ,
Víctor J. S. Béjar  and
Rafael Rebolo
José A. Caballero
Affiliation:
Instituto de Astrofísica de Canarias, 38205, La Laguna, Tenerife, Spain
Víctor J. S. Béjar
Affiliation:
Instituto de Astrofísica de Canarias, 38205, La Laguna, Tenerife, Spain
Rafael Rebolo
Affiliation:
Instituto de Astrofísica de Canarias, 38205, La Laguna, Tenerife, Spain Consejo Superior de Investigaciones Científicas, Spain

Abstract

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We have obtained series of images in the near infrared J and Ks bands for seven L-type dwarfs with a duration of 3 to 6 hours. We present results on: 1) the amplitude of variability associated with atmospheric changes over time scales from minutes to several hours; 2) the search for cool companions in wide orbits; 3) the search for transits of brown dwarfs and planetary companions in very close orbits.

Type
Part 8. Activity and Weather
Information
Symposium - International Astronomical Union , Volume 211: Brown Dwarfs , 2003 , pp. 455 - 456
Copyright
Copyright © Astronomical Society of the Pacific 2001 

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