66 citations · 463 across the 22 of their papers we have counts for
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Astrometric planet search around M8--L2 dwarfs from the ground and with Gaia
J. Sahlmann, P. F. Lazorenko, D. Segransan +4
Ultra-cool dwarfs are very low-mass stars or brown dwarfs and because of their faintness they are difficult targets for radial velocity and transit planet searches. High-precision…
Astrometric planet search around southern ultracool dwarfs II: Astrometric reduction methods and a deep astrometric catalogue
P. F. Lazorenko, J. Sahlmann, D. Segransan +4
We describe the astrometric reduction of images obtained with the FORS2/VLT camera in the framework of an astrometric planet search around 20 M/L-transition dwarfs. We present the…
Astrometric planet search around southern ultracool dwarfs I: First results, including parallaxes of 20 M8-L2 dwarfs
J. Sahlmann, P. F. Lazorenko, D. Segransan +4
Extrasolar planet searches targeting very low-mass stars and brown dwarfs are hampered by intrinsic or instrumental limitations. Time series of astrometric measurements with precis…