1.6k citations
- Instituto Superior TécnicoPT39 papers
- Centre National de la Recherche ScientifiqueFR32 papers
- Instituto Politécnico de LisboaPT27 papers
- Institute of Astrophysics and Space SciencesPT23 papers
- European Southern ObservatoryCL13 papers
- University of ÉvoraPT13 papers
- University of PortsmouthGB13 papers
- Universidade Nova de LisboaPT11 papers
- European Organization for Nuclear ResearchCH10 papers
- Observatoire Cantonal de NeuchâtelCH10 papers
- Sorbonne UniversitéFR10 papers
- University of CoimbraPT10 papers
50 papers · 1 filter
Lithium abundances in exoplanet-host stars : modelling
M. Castro, S. Vauclair, O. Richard +1
Aims. Exoplanet-host stars (EHS) are known to present superficial chemical abundances different from those of stars without any detected planet (NEHS). EHS are, on the average, ove…
Images IV: Strong evolution of the oxygen abundance in gaseous phases of intermediate mass galaxies since z=0.8
M. Rodrigues, F. Hammer, H. Flores +22
Intermediate mass galaxies (logM(Msun)>10) at z~0.6 are the likeliest progenitors of the present-day numerous population of spirals. There is growing evidence that they have evolve…
Modeling the magnetic field in the protostellar source NGC 1333 IRAS 4A
Jose Goncalves, Daniele Galli, Josep M. Girart
Magnetic fields are believed to play a crucial role in the process of star formation. We compare high-angular resolution observations of the submillimeter polarized emission of NGC…
The HARPS search for southern extra-solar planets: XIV. Gl 176b, a super-Earth rather than a Neptune, and at a different period
T. Forveille, X. Bonfils, X. Delfosse +10
A 10.24 days Neptune-mass planet was recently announced to orbit the nearby M2 dwarf Gl 176, based on 28 radial velocities measured with the HRS spectrograph on the Hobby-Heberly T…
TW Hydrae: evidence of stellar spots instead of a Hot Jupiter
N. Huelamo, P. Figueira, X. Bonfils +12
TW Hydrae shows significant radial-velocity variations in the optical regime. They have been attributed to a 10 Jupiter Mass planet orbiting the star at 0.04 AU. In this work, we h…
New M dwarf debris disk candidates in NGC 2547
Jan Forbrich, Charles J. Lada, August A. Muench +1
With only six known examples, M-dwarf debris disks are rare, even though M dwarfs constitute the majority of stars in the Galaxy. After finding a new M dwarf debris disk in a shall…