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VALD{2: Progress of the Vienna Atomic Line Data Base ?
The updated version of the “Vienna Atomic Line Data Base” (VALD) is described which represents a considerable improvement over the first installation from 1994 and the future roadmap of VALD developments is discussed, including the incorporation of molecular transitions and integration with external data bases.
We have detected transits of the innermost planet 'e' orbiting 55 Cnc (V = 6.0), based on two weeks of nearly continuous photometric monitoring with the MOST space telescope. The transits occur with
The Very Low Albedo of an Extrasolar Planet: MOST Space-based Photometry of HD 209458
Measuring the albedo of an extrasolar planet provides insight into its atmospheric composition and its global thermal properties, including heat dissipation and weather patterns. Such a measurement
Atmospheric Loss of Exoplanets Resulting from Stellar X-Ray and Extreme-Ultraviolet Heating
Past studies addressing the thermal atmospheric escape of hydrogen from hot Jupiters have been based on the planet's effective temperature, which, as we show here, is not physically relevant for loss
Line-by-line opacity stellar model atmospheres
Modelling stellar atmospheres becomes increasingly demanding as more accurate observations draw a more complex picture of how real stars look like. What could be called a normal star becomes
Differential Rotation of Eridani Detected by MOST
The Microvariability and Oscillations of STars (MOST) photometric satellite observed three rotations of Eri continuously in late 2005. We detected two spots (Δm ~ 0.01) at different latitudes (200,
An Upper Limit on the Albedo of HD 209458b: Direct Imaging Photometry with the MOST Satellite
We present space-based photometry of the transiting exoplanetary system HD 209458 obtained with the Microvariablity and Oscillations of Stars (MOST) satellite, spanning 14 days and covering 4
Magnetic activity in the photosphere of CoRoT-Exo-2a. Active longitudes and short-term spot cycle in
Context. The space experiment CoRoT has recently detected transits by a hot Jupiter across the disk of an active G7V star (CoRoTExo-2a) that can be considered as a good proxy for the Sun at an age of
The effect of rotation on the abundances of the chemical elements of the A-type stars in the Praesepe cluster ?
Aims. We study how chemical abundances of late B‐, A‐ and early F‐type stars evolve with time, and we search for correlations between the abundance of chemical elements and other stellar parameters,
The γ-ray binary LS 5039: mass and orbit constraints from MOST observations
The results of a coordinated space-based photometric and ground-based spectroscopic observing campaign on the enigmatic γ -ray binary LS 5039 are reported. 16 d of observations from the MOST