74 citations · 148 across the 8 of their papers we have counts for
14 papers · 1 filter
Natural Transfer of Viable Microbes in Space from Planets in the Extra-Solar Systems to a Planet in our Solar System and Vice-Versa
Mauri Valtonen, Pasi Nurmi, Jia-Qing Zheng +7
We investigate whether it is possible that viable microbes could have been transported to Earth from the planets in extra-solar systems by means of natural vehicles such as ejecta…
Limits of ultra-high-precision optical astrometry: Stellar surface structures
Urban Eriksson, Lennart Lindegren
We investigate the astrometric effects of stellar surface structures as a practical limitation to ultra-high-precision astrometry, e.g. in the context of exoplanet searches, and to…
Gaia Data Processing Architecture
W. O'Mullane, U. Lammers, C. Bailer-Jones +13
Gaia is ESA's ambitious space astrometry mission the main objective of which is to astrometrically and spectro-photometrically map 1000 Million celestial objects (mostly in our gal…
Broad-band photometric colors and effective temperature calibrations for late-type giants. II. Z<0.02
A. Kucinskas, P. H. Hauschildt, I. Brott +4
(Abridged) We investigate the effects of metallicity on the broad-band photometric colors of late-type giants, and make a comparison of synthetic colors with observed photometric p…
Photometric colors of late-type giants: theory versus observations
A. Kucinskas, P. H. Hauschildt, H. -G. Ludwig +5
To assess the current status in the theoretical modeling of the spectral properties of late-type giants, we provide a comparison of synthetic photometric colors of late-type giants…
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…