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2MASS Brown Dwarfs and a First Estimate of the Substellar Mass Function

Liebert, James and Reid, I. Neill and Kirkpatrick, J. Davy and Burrows, A. and Gizis, J. E. and Burgasser, A. and Dahn, C. C. and Monet, D. G. and Cutri, R. and Beichman, C. and Skrutskie, M. (2000) 2MASS Brown Dwarfs and a First Estimate of the Substellar Mass Function. In: From Extrasolar Planets to Cosmology: The VLT Opening Symposium. ESO Astrophysics Symposia. Springer , Berlin, pp. 505-510. ISBN 978-3-540-67163-3. https://resolver.caltech.edu/CaltechAUTHORS:20200701-150027760

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Abstract

More than 70 L dwarfs have now been found in followup work on a small portion of the sky surveyed by the Two Micron All Sky Survey. It is estimated that the L dwarfs span a temperature range of 1400 to 2000K. Several have trigonometric parallax determinations, and luminosities between 10^(-3.5) and 10^(-4.3) L⊙. These properties, together with the detection of lithium in one third of the objects, are consistent with the majority having substellar masses. Evolutionary models are utilized to derive estimates of the space density and mass function of substellar objects, predicting a majority that are not detectable with 2MASS. In a given volume the brown dwarfs may outnumber the stars, though contributing only modestly to the local disk mass.


Item Type:Book Section
Related URLs:
URLURL TypeDescription
https://doi.org/10.1007/10720961_72DOIArticle
https://rdcu.be/b5mvZPublisherFree ReadCube access
ORCID:
AuthorORCID
Kirkpatrick, J. Davy0000-0003-4269-260X
Burrows, A.0000-0002-3099-5024
Gizis, J. E.0000-0002-8916-1972
Burgasser, A.0000-0002-6523-9536
Cutri, R.0000-0002-0077-2305
Beichman, C.0000-0002-5627-5471
Additional Information:© 2000 Springer-Verlag Berlin Heidelberg.
Group:Infrared Processing and Analysis Center (IPAC)
Subject Keywords:Evolutionary Model; Mass Function; Space Density; Local Disk; Extrasolar Planet
Series Name:ESO Astrophysics Symposia
Record Number:CaltechAUTHORS:20200701-150027760
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20200701-150027760
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:104195
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:01 Jul 2020 22:18
Last Modified:01 Jul 2020 22:18

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