839 citations · 11.3k across the 172 of their papers we have counts for
5 papers · 1 filter
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…
Orbital elements, masses and distance of lambda Scorpii A and B determined with the Sydney University Stellar Interferometer and high resolution spectroscopy
W. J. Tango, J. Davis, M. J. Ireland +7
The triple system HD158926 (lambda Sco) has been observed interferometrically with the Sydney University Stellar Interferometer and the elements of the wide orbit have been determi…
Masses of Astrometrically-Discovered and Imaged Binaries: G 78-28AB and GJ 231.1BC
Steven H. Pravdo, Stuart B. Shaklan, Sloane J. Wiktorowicz +5
The Stellar Planet Survey (STEPS) is an ongoing astrometric search for giant planets and brown dwarfs around a sample of ~30 M-dwarfs. We have discovered several low-mass companion…
Observable Effects of Dust Formation in Dynamic Atmospheres of M-type Mira Variables
M. J. Ireland, M. Scholz
The formation of dust with temperature-dependent non-grey opacity is considered in a series of self-consistent model atmospheres at different phases of an O-rich Mira variable of m…