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Disks in Brown Dwarf Systems

Published online by Cambridge University Press:  26 May 2016

Leonardo Testi ,
Antonella Natta ,
Fernando Comerón ,
Ernesto Oliva  and
Francesca D'Antona
Leonardo Testi
Affiliation:
Osservatorio Astrofisico di Arcetri, INAF, Firenze, Italy
Antonella Natta
Affiliation:
Osservatorio Astrofisico di Arcetri, INAF, Firenze, Italy
Fernando Comerón
Affiliation:
European Southern Observatory, Garching, Germany
Ernesto Oliva
Affiliation:
Telescopio Nazionale Galileo and Centro Galileo Galilei, INAF
Francesca D'Antona
Affiliation:
Osservatorio Astronomico di Roma, INAF, Roma, Italy

Abstract

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We discuss evidence for and properties of disks associated with brown dwarfs in the star-forming region ρ Oph. We derived photospheric parameters from low resolution near infrared spectroscopy and modeled the mid-infrared excess of nine substellar object candidates in the ρ OphISOCAM survey of Bontemps et al. (2001). In all cases, the mid-infrared excess is consistent with the SED expected from irradiated disks. These results suggest that circumstellar disks are commonly associated to young brown dwarfs and planetary-mass objects. Finally, we discuss the possibility of using these data to discriminate between various formation scenarios for substellar objects.

Type
Part 3. Circumsubstellar Matter
Information
Symposium - International Astronomical Union , Volume 211: Brown Dwarfs , 2003 , pp. 127 - 132
Copyright
Copyright © Astronomical Society of the Pacific 2001 

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