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The CoRoT-7 planetary system: two orbiting super-Earths
We report on an intensive observational campaign carried out with HARPS at the 3.6 m telescope at La Silla on the star CoRoT-7. Additional simultaneous photometric measurements carried out with theExpand
A homogeneous nucleus for comet 67P/Churyumov–Gerasimenko from its gravity field
It is concluded that the interior of the nucleus of comet 67P/Churyumov–Gerasimenko is homogeneous and constant in density on a global scale without large voids. Expand
On the nucleus structure and activity of comet 67P/Churyumov-Gerasimenko
Images from the OSIRIS scientific imaging system onboard Rosetta show that the nucleus of 67P/Churyumov-Gerasimenko consists of two lobes connected by a short neck, which raises the question of whether the two Lobes represent a contact binary formed 4.5 billion years ago, or a single body where a gap has evolved via mass loss. Expand
Structure of the Venus neutral atmosphere as observed by the Radio Science experiment VeRa on Venus Express
[1] The European Space Agency Venus Express Radio Science experiment (VeRa) obtained 118 radio occultation measurements of the Venusian atmosphere between July 2006 and June 2007. Southern latitudesExpand
First numerical ephemerides of the Martian moons
We present new ephemerides of Phobos and Deimos that are fit to observations from 1877 to 2005 and include recent spacecraft observations by Mars Global Surveyor and Mars Express. In contrast toExpand
A Sporadic Third Layer in the Ionosphere of Mars
The authors' observations imply that a third ionospheric layer at altitude ranges of 65 to 110 kilometers, which has been predicted to be permanent and continuous is present sporadically and locally. Expand
The depth of the convective boundary layer on Mars
Abstract We are using observations obtained with Mars Express to explore the structure and dynamics of the martian lower atmosphere. We consider a series of radio occultation experiments conducted inExpand
The mean coronal magnetic field determined from HELIOS Faraday rotation measurements
Coronal Faraday rotation of the linearly polarized carrier signals of the HELIOS spacecraft was recorded during the regularly occurring solar occultations over almost a complete solar cycle from 1975Expand
Precise mass determination and the nature of Phobos
[1] We report independent results from two subgroups of the Mars Express Radio Science (MaRS) team who independently analyzed Mars Express (MEX) radio tracking data for the purpose of determiningExpand
Dust devil speeds, directions of motion and general characteristics observed by the Mars Express High Resolution Stereo Camera
Abstract A total of 205 dust devils were detected in 23 High Resolution Stereo Camera (HRSC) images taken between January 2004 and July 2006 with the ESA Mars Express orbiter, in which average dustExpand