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Searching for Wide Binary Brown Dwarfs around Nearby Stars

Published online by Cambridge University Press:  26 May 2016

Loïc Albert ,
René Doyon  and
Daniel Nadeau
Loïc Albert
Affiliation:
Université de Montréal, Département de physique, C.P. 6128 Succ. Centre-ville, Montréal, H3C 3J7, Québec, Canada
René Doyon
Affiliation:
Université de Montréal, Département de physique, C.P. 6128 Succ. Centre-ville, Montréal, H3C 3J7, Québec, Canada
Daniel Nadeau
Affiliation:
Université de Montréal, Département de physique, C.P. 6128 Succ. Centre-ville, Montréal, H3C 3J7, Québec, Canada

Abstract

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We have started a program to search for Brown Dwarf (BD) companions to nearby stars (5 ≤ d ≤ 10 pc) on long period orbits (up to 2000 AU) using wide field optical/infrared imaging. Our goals in surveying a volume-limited sample of stars are: 1) to determine the binary fraction of widely separated BDs and help constrain the BD formation processes, 2) to search for very cold BDs, 3) to provide a better determination of the age and luminosity of a BD sample. Observations are currently conducted at three observatories, CFHT (3.6m), CTIO (4m) and Observatoire du mont Mégantic (1.6m) and should yield a sample of ~100 star systems to a detection limit of J ≈ 20.

Type
Part 6. Searches for Substellar Companions
Information
Symposium - International Astronomical Union , Volume 211: Brown Dwarfs , 2003 , pp. 287 - 288
Copyright
Copyright © Astronomical Society of the Pacific 2001 

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