activity
20052022
most citedGaia Data Release 2: Photometric content and validation

756 citations · 2.7k across the 33 of their papers we have counts for

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astro-ph2008★ 5 cited

The nearby eclipsing stellar system delta Velorum - I. Origin of the infrared excess from VISIR and NACO imaging

Pierre Kervella, Frédéric Thévenin, Monika Petr-Gotzens

- Context: The triple stellar system delta Vel system presents a significant infrared excess, whose origin is still being debated. A large infrared bow shock has been discovered us…

astro-ph2008★ 75 cited

The radii of the nearby K5V and K7V stars 61 Cyg A & B - CHARA/FLUOR interferometry and CESAM2k modeling

Pierre Kervella, Antoine Mérand, Bernard Pichon +11

Context: The main sequence binary star 61 Cyg (K5V+K7V) is our nearest stellar neighbour in the northern hemisphere. This proximity makes it a particularly well suited system for v…

astro-ph2006★ 5 cited

Deep imaging survey of the environment of Alpha Centauri - I. Adaptive optics imaging of Alpha Cen B with VLT-NACO

Pierre Kervella, Frédéric Thévenin, Vincent Coudé Du Foresto +1

Context: Alpha Centauri is our closest stellar neighbor, at a distance of only 1.3 pc, and its two main components have spectral types comparable to the Sun. This is therefore a fa…

astro-ph2005★ 12 cited

A Search for Very Active Stars in the Galaxy

G. Tsarevsky, J. A. De Freitas Pacheco, N. Kardashev +7

We report the first results of a systematic search near the plane of the Galaxy for the so called very active stars (VAS), which are characterized by a hard X-ray spectrum and acti…

astro-ph2005★ 66 cited

VLTI/VINCI diameter constraints on the evolutionary status of delta Eri, xi Hya, eta Boo

Frederic Thévenin, Pierre Kervella, Bernard Pichon +3

Using VLTI/VINCI angular diameter measurements, we constrain the evolutionary status of three asteroseismic targets: the stars Eri, Hya, Boo. Our predictions of the mea…