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Microarcsecond astrometry with Gaia: the solar system, the Galaxy and beyond
C. A. L. Bailer-Jones
Gaia is an all sky, high precision astrometric and photometric satellite of the European Space Agency (ESA) due for launch in 2010-2011. Its primary mission is to study the composi…
Variability and rotation of ultra cool dwarfs
C. A. L. Bailer-Jones
Over the past few years monitoring programs have shown ultra cool dwarfs (UCDs) to be photometrically variable. Of the 60 sources monitored in the field and some 120 monitored in c…
Spectroscopic rotation velocities of L dwarfs from VLT/UVES and their comparison with periods from photometric monitoring
C. A. L. Bailer-Jones
The variability and rotation of ultra cool dwarfs (UCDs) provide important information on their atmospheres and evolution. As part of an ongoing program to investigate this, projec…
Evolutionary design of photometric systems and its application to Gaia
C. A. L. Bailer-Jones
Designing a photometric system to best fulfil a set of scientific goals is a complex task, demanding a compromise between conflicting requirements and subject to various constraint…
A rotational and variability study of a large sample of PMS stars in NGC 2264
M. H. Lamm, C. A. L. Bailer-Jones, R. Mundt +2
We present the results of an extensive search for periodic and irregular variable pre-main sequence (PMS) stars in the young (2-4 Myr) open cluster NGC 2664, based on photometric m…