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Fe I in the β Pictoris circumstellar gas disk I. Physical properties of the neutral iron gas
A. Vidal-Madjar, F. Kiefer, A. Lecavelier des Etangs +5
The young planetary system β Pictoris is surrounded by a circumstellar disk of dust and gas. Because both dust and gas have a lifetime shorter than the system age, they need to be…
Detection of a repeated transit signature in the light curve of the enigma star KIC 8462852: a 928-day period?
Flavien Kiefer, Alain Lecavelier des Etangs, Alfred Vidal-Madjar +3
As revealed by its peculiar Kepler light curve, the enigmatic star KIC 8462852 undergoes short and deep flux dimmings at a priori unrelated epochs. It presents nonetheless all othe…
Search for rings and satellites around the exoplanet CoRoT-9b using Spitzer photometry
A. Lecavelier des Etangs, G. Hébrard, S. Blandin +9
Using Spitzer photometry at 4.5 microns, we search for rings and satellites around the long period transiting planet CoRoT-9b. We observed two transits in 2010 and 2011. From their…