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Multiband photometric detection of a huge flare on the M9 dwarf 2MASSW J1707183+643933
Boris Rockenfeller, Coryn A. L. Bailer-Jones, Reinhard Mundt +1
We present simultaneous UV-G-R-I monitoring of 19 M dwarfs that revealed a huge flare on the M9 dwarf 2MASSW J1707183+643933 with an amplitude in the UV of at least 6 magnitudes. T…
The design and performance of the Gaia photometric system
C. Jordi, E. Hoeg, A. G. A. Brown +32
The European Gaia astrometry mission is due for launch in 2011. Gaia will rely on the proven principles of ESA's Hipparcos mission to create an all-sky survey of about one billion…
Variability and periodicity of field M dwarfs revealed by multichannel monitoring
Boris Rockenfeller, Coryn A. L. Bailer-Jones, Reinhard Mundt
We present simultaneous, multiband monitoring of 19 field M dwarfs (spectral types M2-M9). Significant variability was found in seven objects in at least one out of the three chann…
Proper motion Pleiades candidate L-type brown dwarfs
G. Bihain, R. Rebolo, V. J. S. Bejar +3
We present results of an optical and near-infrared (IR) 1.8 deg^2 survey in the Pleiades open cluster to search for substellar objects. From optical I-band images from the CFHT and…
The Disappearing Act of KH 15D: Photometric Results from 1995 to 2004
C. M. Hamilton, W. Herbst, F. J. Vrba +14
We present results from the most recent (2002-2004) observing campaigns of the eclipsing system KH 15D, in addition to re-reduced data obtained at Van Vleck Observatory (VVO) betwe…
Design of the Gaia photometric systems for stellar parametrization using a population-based optimizer
C. A. L. Bailer-Jones
Large, deep surveys must typically rely on multiband photometry rather than spectroscopy for determining the astrophysical properties (APs) of stars. Yet designing an optimal photo…