21 citations · 23 across the 5 of their papers we have counts for
5 papers
Exoplanets around G-K Giants
M. P. Döllinger, A. P. Hatzes, L. Pasquini +6
G and K giants are a class of radial velocity (RV) variables. One reason for this variability are planetary companions which are indicated in time series of stellar spectra. Since…
Multiplicity-Study of Exoplanet Host Stars
M. Mugrauer, R. Neuhäuser, T. Mazeh +1
We carry out a systematic search campaign for wide companions of exoplanet host stars to study their multiplicity and its influence on the long-term stability and the orbital param…
Infrared imaging and spectroscopy of companion candidates near the young stars HD 199143 and HD 358623 in Capricornius
Ralph Neuhaeuser, Eike Guenther, Markus Mugrauer +2
We present JHK images of the young (~20 Myrs) nearby (~48 pc) stars HD 199143 and HD 358623 to search for (sub-)stellar companions around them. The images were obtained in JHK with…
Imaging and spectroscopy of DENIS-P J104814-395606
Ralph Neuhaeuser, Eike Guenther, Joao Alves +8
We obtained deep H- and K-band images of DENIS-P J104814-395606 using SofI and the speckle camera SHARP-I at the ESO-3.5m-NTT as well as QUIRC at the Mauna Kea 2.2m telescope betwe…
Multiplicity of young brown dwarfs in Cha I
V. Joergens, E. Guenther, R. Neuhäuser +4
How frequent are brown dwarf binaries? Do brown dwarfs have planets? Are current theoretical pre-main-sequence evolutionary tracks valid down to the substellar regime? - Any detect…