Skip navigation
Skip navigation

Keck laser guide star adaptive optics monitoring of the M8+L7 binary LHS 2397aAB: First dynamical mass benchmark at the L/T transition

Dupuy, Trent J; Liu, Michael C; Ireland, Michael


We present Keck laser guide star adaptive optics imaging and aperture masking observations of the M8+L7binary LHS2397aAB. Together with archival Hubble Space Telescope, Gemini-North, and Very Large Telescope data, our observations span 11.8years of the binary's 14.2year orbital period. We determine a total dynamical mass of 0.146+0.015-0.013M ⊙ (153+16-14 M Jup). Using the combined observational constraints of the total mass and individual luminosities, the Tucson (Lyon) evolutionary models...[Show more]

CollectionsANU Research Publications
Date published: 2009
Type: Journal article
Source: Astrophysical Journal Letters
DOI: 10.1088/0004-637X/699/1/168


File Description SizeFormat Image
01_Dupuy_Keck_laser_guide_star_adaptive_2009.pdf721.14 kBAdobe PDFThumbnail

Items in Open Research are protected by copyright, with all rights reserved, unless otherwise indicated.

Updated:  19 May 2020/ Responsible Officer:  University Librarian/ Page Contact:  Library Systems & Web Coordinator