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- European Southern ObservatoryCL534 papers
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8 papers · 2 filters
CO mass upper limits in the Fomalhaut ring - the importance of NLTE excitation in debris discs and future prospects with ALMA
L. Matrà, O. Panić, M. C. Wyatt +1
In recent years, gas has been observed in an increasing number of debris discs, though its nature remains to be determined. Here, we analyse CO molecular excitation in optically th…
A Spitzer Five-Band Analysis of the Jupiter-Sized Planet TrES-1
Patricio Cubillos, Joseph Harrington, Nikku Madhusudhan +4
With an equilibrium temperature of 1200 K, TrES-1 is one of the coolest hot Jupiters observed by {\Spitzer}. It was also the first planet discovered by any transit survey and one o…
CO gas inside the protoplanetary disk cavity in HD 142527: disk structure from ALMA
Sebastian Perez, S. Casassus, F. Ménard +6
Inner cavities and annular gaps in circumstellar disks are possible signposts of giant planet formation. The young star HD 142527 hosts a massive protoplanetary disk with a large c…
Brown dwarf disks with ALMA
L. Ricci, L. Testi, A. Natta +3
We present ALMA continuum and spectral line data at 0.89 mm and 3.2 mm for three disks surrounding young brown dwarfs and very low mass stars in the Taurus star forming region. Dus…
ALMA hints at the presence of two companions in the disk around HD 100546
Catherine Walsh, Attila Juhasz, Paola Pinilla +10
HD 100546 is a well-studied Herbig Be star-disk system that likely hosts a close-in companion with compelling observational evidence for an embedded protoplanet at 68 AU. We presen…
Herschel observations of gas and dust in comet C/2006 W3 (Christensen) at 5 AU from the Sun
M. de Val-Borro, D. Bockelée-Morvan, E. Jehin +19
We aimed to measure the H2O and dust production rates in C/2006 W3 (Christensen) with the Herschel Space Observatory at a heliocentric distance of ~ 5 AU. We have searched for emis…