227 citations · 488 across the 18 of their papers we have counts for
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DE082349 is a juvenile binary brown dwarf at 20.7 pc
J. Sahlmann, A. J. Burgasser, E. L. Martín +6
Astrometric monitoring of the nearby early-L dwarf DE082349 has revealed a low-mass companion in a 248-day orbit that was announced in an earlier work. Here, we present new astr…
Exoplanet Detection Techniques
Debra A. Fischer, Andrew W. Howard, Greg P. Laughlin +4
We are still in the early days of exoplanet discovery. Astronomers are beginning to model the atmospheres and interiors of exoplanets and have developed a deeper understanding of p…
Astrometric planet search around southern ultracool dwarfs III. Discovery of a brown dwarf in a 3-year orbit around DE0630-18
J. Sahlmann, P. F. Lazorenko, D. Segransan +4
Using astrometric measurements obtained with the FORS2/VLT camera, we are searching for low-mass companions around 20 nearby ultracool dwarfs. With a single-measurement precision o…
Revealing δ Cephei's Secret Companion and Intriguing Past
Richard I. Anderson, Johannes Sahlmann, Berry Holl +5
Classical Cepheid variable stars are crucial calibrators of the cosmic distance scale thanks to a relation between their pulsation periods and luminosities. Their archetype, δ Ceph…