The substellar mass function in σ Orionis II. Optical, near-infrared and IRAC/Spitzer photometry of young cluster brown dwarfs and planetary-mass objects ,

A. Caballero, J.; J. S. Béjar, V.; Rébolo, R.; Eislöffel, J.; R. Zapatero Osorio, M.; Mundt, R.; Barrado, D.; Bihain, G.; A. L. Bailer‐Jones, C.; Forveille, T.; L. Martı́n, E.

doi:10.1051/0004-6361:20066993

Public

The substellar mass function in σ Orionis II. Optical, near-infrared and IRAC/Spitzer photometry of young cluster brown dwarfs and planetary-mass objects ,

Published in Journal of International Crisis and Risk Communication Research • Aug 1, 2007

Authors:

J. A. Caballero

V. J. S. Béjar

R. Rébolo

Abstract

Aims. We investigate the mass function in the substellar domain down to a few Jupiter masses in the young σ Orionis open cluster (3 ± 2 Ma, d = 360-60+70 pc). Methods. We have performed a deep IJ-band search, covering an area of 790 arcmin2 close to the cluster centre. This survey was complemented w...

Subject

Physics

Brown dwarf

Astrophysics

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