Zobrazeno 1 - 10
of 54
pro vyhledávání: '"Hormuth, Felix"'
Autor:
Csépány, Gergely, Ancker, Mario van den, Ábrahám, Péter, Köhler, Rainer, Brandner, Wolfgang, Hormuth, Felix, Hiss, Hector
Publikováno v:
A&A 603, A74 (2017)
Context. In multiple pre-main-sequence systems the lifetime of circumstellar disks appears to be shorter than around single stars, and the actual dissipation process may depend on the binary parameters of the systems. Aims. We report high spatial res
Externí odkaz:
http://arxiv.org/abs/1702.08583
Publikováno v:
A&A 578, L9 (2015)
Context. The prototypical low-mass young stellar object, T Tauri, is a well-studied multiple system with at least three components. Aims. We aim to explore the T Tau system with the highest spatial resolution, study the time evolution of the known co
Externí odkaz:
http://arxiv.org/abs/1505.05722
Autor:
Janson, Markus, Bergfors, Carolina, Brandner, Wolfgang, Bonnefoy, Mickael, Schlieder, Joshua, Kohler, Rainer, Hormuth, Felix, Henning, Thomas, Hippler, Stefan
Orbital monitoring of M-type binaries is essential for constraining their fundamental properties. This is particularly useful in young systems, where the extended pre-main sequence evolution can allow for precise isochronal dating. Here, we present t
Externí odkaz:
http://arxiv.org/abs/1409.1550
Autor:
Janson, Markus, Bergfors, Carolina, Brandner, Wolfgang, Kudryavtseva, Natalia, Hormuth, Felix, Hippler, Stefan, Henning, Thomas
The distribution of multiplicity among low-mass stars is a key issue to understanding the formation of stars and brown dwarfs, and recent surveys have yielded large enough samples of nearby low-mass stars to study this issue statistically to good acc
Externí odkaz:
http://arxiv.org/abs/1406.0535
Autor:
Janson, Markus, Hormuth, Felix, Bergfors, Carolina, Brandner, Wolfgang, Hippler, Stefan, Daemgen, Sebastian, Kudryavtseva, Natalia, Schmalzl, Eva, Schnupp, Carolin, Henning, Thomas
We present the results of an extensive high-resolution imaging survey of M-dwarf multiplicity using the Lucky Imaging technique. The survey made use of the AstraLux Norte camera at the Calar Alto 2.2m telescope and the AstraLux Sur camera at the ESO
Externí odkaz:
http://arxiv.org/abs/1205.4718
Autor:
Hormuth, Felix, Müller, Thomas G.
(Abridged) The Long Wavelength Spectrometer (LWS) onboard the Infrared Space Observatory (ISO) observed the four large main-belt asteroids (1) Ceres, (2) Pallas, (4) Vesta, and (10) Hygiea multiple times. The photometric and spectroscopic data cover
Externí odkaz:
http://arxiv.org/abs/0901.4557
AstraLux is the Lucky Imaging camera for the Calar Alto 2.2-m telescope and the 3.5-m NTT at La Silla. It allows nearly diffraction limited imaging in the SDSS i' and z' bands of objects as faint as i'=15.5mag with minimum technical effort. One of th
Externí odkaz:
http://arxiv.org/abs/0809.4329
Autor:
Hippler, Stefan, Brandner, Wolfgang, Clénet, Yann, Hormuth, Felix, Gendron, Eric, Henning, Thomas, Klein, Ralf, Lenzen, Rainer, Meschke, Daniel, Naranjo, Vianak, Neumann, Udo, Ramos, José Ricardo, Rohloff, Ralf-Rainer, Eisenhauer, Frank
The very large telescope (VLT) interferometer (VLTI) in its current operating state is equipped with high-order adaptive optics (MACAO) working in the visible spectrum. A low-order near-infrared wavefront sensor (IRIS) is available to measure non-com
Externí odkaz:
http://arxiv.org/abs/0808.1637
Autor:
Hormuth, Felix
MicroLux is a GPS-based high precision and high speed timing add-on to the Calar Alto Lucky Imaging camera AstraLux. It allows timestamping of individual CCD exposures at frame rates of more than 1 kHz with an accuracy better than one microsecond wit
Externí odkaz:
http://arxiv.org/abs/0807.0501
AstraLux is the Lucky Imaging camera for the Calar Alto 2.2-m telescope, based on an electron-multiplying high speed CCD. By selecting only the best 1-10% of several thousand short exposure frames, AstraLux provides nearly diffraction limited imaging
Externí odkaz:
http://arxiv.org/abs/0807.0497