New brown dwarf companions to dM(e) stars

Details New brown dwarf companions to dM(e) stars New brown dwarf companions to dM(e) stars

2005-09-09

arxiv.org/abs/astro-ph/0509255v1

Astronomy and Astrophysics

Astrophysics

3 pages, 3 figures, accepted for publication in the proceedings of the workshop "Ultralow-mass star formation and evolution",

Scientific paper

10.1002/asna.200510456

We present new astrometric and spectroscopic data to confirm two new M/L dwarf systems, G124-62 and LHS5166, and discuss the nature of a third system (LP261-75). Age and thus mass determinations of the L dwarf companions are discussed based on various activity-age relationships of the M dwarf primaries. This publication will update the list of widely separated substellar companions to nearby stars.

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