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Published on 1 December 2009

A new window for the observation of dust growth in molecular clouds

For a long time researchers have assumed that the dust particles grow in molecular clouds and form a seed population for the formation of planets in later...
Published on 1 November 2009

A multifaceted astronomical dictionary

On the occasion of the International Year of Astronomy (IYA2009), a Paris Observatory astronomer has created an interactive dictionary of astronomical...
Published on 1 October 2009

The Andromeda galaxy seen as never, at the 21-cm wavelength

One of the deepest survey of the Andromeda galaxy (M 31) has just been completed by L. Chemin (Observatoire de Paris) and his collaborators in the 21-cm...
Published on 1 October 2009

A population of compact elliptical galaxies detected with the Virtual Observatory

Compact elliptical galaxies (cE) are rare objects, which are usually observed as neighbours of massive galaxies, such as Messier 32 around Andromeda. Since...
Published on 1 September 2009

First light for Planck

The Planck satellite is in good shape. The First Light Survey, performed to demonstrate the stability of the instruments and the ability to calibrate them...
Published on 1 September 2009

First Solid Evidence for a Rocky Exoplanet

An international team (A) of astronomers, among which astronomers from Paris Observatory, have measured the mass and density of the smallest exoplanet. The...
Published on 1 September 2009

Andromeda, the cannibal

An international team of researchers, with one from Paris Observatory, has just observed the Andromeda galaxy (M31) and her partner, the Triangulum galaxy...
Published on 1 July 2009

Fermi reveals various populations of gamma-ray pulsars

It was not sure at all, when the Fermi satellite was launched, that it could detect any of the millisecond pulsars (MSP) through their gamma-ray emission....
Published on 1 June 2009

Solar-like oscillations have been discovered in a massive star by CoRoT

Oscillations of the same nature as those seen in the Sun have been discovered - thanks to CoRoT(*) - in a massive star, V1449 Aql (HD180642), which is a...
Published on 1 June 2009

Io close to thermal equilibrium

Is Io in thermal equilibrium? Using a set of astrometric observations of the four Galilean moons (Io, Europa, Ganymede and Callisto) covering the years...