417 citations · 4.3k across the 124 of their papers we have counts for
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Visual orbit of GJ 164 AB
Frantz Martinache, Barbara Rojas-Ayala, Michael J. Ireland +2
We report seven successful observations of the astrometric binary GJ 164 AB system with aperture masking interferometry. The companion, with a near infrared contrast of 5:1 was det…
Mapping the Shores of the Brown Dwarf Desert I.: Upper Scorpius
Adam L. Kraus, Michael J. Ireland, Frantz Martinache +1
We present the results of a survey for stellar and substellar companions to 82 young stars in the nearby OB association Upper Scorpius. This survey used nonredundant aperture-mask…
Dynamical Mass of GJ 802B: a brown dwarf in a triple system
M. J. Ireland, A. Kraus, F. Martinache +2
We report a dynamical measurement of the mass of the brown dwarf GJ 802B using aperture-masking interferometry and astrometry. In addition, we report the discovery that GJ 802A is…
Direct imaging with highly diluted apertures. I. Field of view limitations
O. Lardiere, F. Martinache, F. Patru
Future optical interferometric instrumentation mainly relies on the availability of an efficient cophasing system: once available, what has so far postponed the relevance of direct…
Precision Masses of the low-mass binary system GJ 623
Frantz Martinache, James P. Lloyd, Michael J. Ireland +2
We have used Aperture Masking Interferometry and Adaptive Optics (AO) at the Palomar 200'' to obtain precise mass measurements of the binary M dwarf GJ 623. AO observations spread…
Direct Detection of the Brown Dwarf GJ 802B with Adaptive Optics Masking Interferometry
James P. Lloyd, Frantz Martinache, Michael J. Ireland +4
We have used the Palomar 200" Adaptive Optics (AO) system to directly detect the astrometric brown dwarf GJ 802B reported by Pravdo et al. 2005. This observation is achieved with a…