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Proper motion of very low mass stars and brown dwarfs in the Pleiades cluster

Moraux, E. and Bouvier, J. and Stauffer, J. R. (2001) Proper motion of very low mass stars and brown dwarfs in the Pleiades cluster. Astronomy & Astrophysics, 367 (1). pp. 211-217. ISSN 0004-6361. doi:10.1051/0004-6361:20000414.

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We report proper motion measurements for 25 very-low mass (VLM) star and brown dwarf (BD) candidates of the Ple iades cluster previously identified by Bouvier et al. (1998). Proper motions are measured with an accuracy of 9 mas/yr, compared to an expected tangential motion of about 50 mas/yr for Pleiades members. Of the 25 candidates, 15 have a membership probability of 95% or more and 7 are rejected as being field dwarfs. The 3 remaining candidates exhibit independent evidence for membership (lithium absorption or long-term proper motion). From the firm identification of Pleiades VLM and BD members, the cluster's substellar mass function is revised to dN/dM ∝ M^(-0.5) in the mass range from 0.04 to 0.3 M_⊙.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Bouvier, J.0000-0002-7450-6712
Stauffer, J. R.0000-0003-3595-7382
Additional Information:© 2001 ESO. Received: 16 November 2000. Accepted: 30 November 2000. We thank A. Fienga for allowing us access to PRIAM before public release, A. Robin for help in using the Besancon's galactic model, and C. Clarke for discussions on cluster kinematics.
Group:Infrared Processing and Analysis Center (IPAC)
Subject Keywords:stars: low-mass, brown dwarfs - stars: luminosity function, mass function - Galaxy: open clusters and associations: individual: Pleiades
Issue or Number:1
Record Number:CaltechAUTHORS:20180307-074825163
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Official Citation:Proper motion of very low mass stars and brown dwarfs in the Pleiades cluster E. Moraux, J. Bouvier and J. R. Stauffer A&A, 367 1 (2001) 211-217 DOI:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:85158
Deposited By: Ruth Sustaita
Deposited On:07 Mar 2018 17:44
Last Modified:15 Nov 2021 20:26

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