36 citations · 249 across the 13 of their papers we have counts for
26 papers
The binary system of the spinning-top Be star Achernar
P. Kervella, S. Borgniet, A. Domiciano de Souza +16
Achernar, the closest and brightest classical Be star, presents rotational flattening, gravity darkening, occasional emission lines due to a gaseous disk, and an extended polar win…
A SOPHIE RV search for giant planets around young nearby stars (YNS). A combination with the HARPS YNS survey
A. Grandjean, A. -M. Lagrange, N. Meunier +9
The search of close (a<=5 au) giant planet(GP) companions with radial velocity(RV) around young stars and the estimate of their occurrence rates is important to constrain the migra…
Mid-infrared circumstellar emission of the long-period Cepheid l Carinae resolved with VLTI/MATISSE
V. Hocdé, N. Nardetto, A. Matter +149
The nature of circumstellar envelopes (CSE) around Cepheids is still a matter of debate. The physical origin of their infrared (IR) excess could be either a shell of ionized gas, o…
Inspecting the Cepheid distance ladder: The Hubble Space Telescope distance to the SNIa host galaxy NGC 5584
Behnam Javanmardi, Antoine Mérand, Pierre Kervella +7
The current tension between the direct and the early Universe measurements of the Hubble Constant, , requires detailed scrutiny of all the data and methods used in the studies…
Activity time series of old stars from late F to early K. V. Effect on exoplanet detectability with high-precision astrometry
N. Meunier, A. -M. Lagrange, S. Borgniet
Stellar activity strongly affects and may prevent the detection of Earth-mass planets in the habitable zone of solar-type stars with radial velocity technics. Astrometry is in prin…
Pulsating chromosphere of classical Cepheids. Calcium infrared triplet and H profile variations
V. Hocdé, N. Nardetto, S. Borgniet +10
It has been shown recently that the infrared emission of Cepheids, which is constant over the pulsation cycle, might be due to a pulsating shell of ionized gas of about 15\% of the…