CHAPELLIER , E.

Context. We perform a new spectroscopy of RR Lyrae to gain an understanding of the Blazhko effect. The Blazhko effect is a periodic amplitude and/or phase modulation shown by some RR Lyrae stars. Aims. New high precision spectroscopic observations of RR Lyrae, the brightest Blazhko star, were obtained continuously over an entire Blazhko period...

Astron. & Astrophys., 456, pp. 305-312 (2006)

Astronomy and Astrophysics, v. 426, p. 687-693, 2004. http://dx.doi.org/10.1051/0004-6361:20040418

Astronomy and Astrophysics, v. 400, p. 613-621, 2003. http://dx.doi.org/10.1051/0004-6361:20030076

Astron. & Astrophys., 453, p. 1041 (2006)

International audience

Astronomy and Astrophysics, v. 448, p. 697-701, 2006. http://dx.doi.org/10.1051/0004-6361:20053815

International audience

International audience

International audience

International audience

Astronomy and Astrophysics, v. 426, p. 247-252, 2004. http://dx.doi.org/10.1051/0004-6361:20034068

International audience

n/a, MmSAI 77, p. 470 (2006)

Context. The CoRoT (Convection, Rotation and planetary Transits) space mission provides a valuable opportunity to monitor stars with uninterrupted time sampling for up to 150 days at a time. The study of RR Lyrae stars, performed in the framework of the Additional Programmes belonging to the exoplanetary field, will particularly benefit from...

Context. The CoRoT (Convection, Rotation and planetary Transits) space mission provides a valuable opportunity to monitor stars with uninterrupted time sampling for up to 150 days at a time. The study of RR Lyrae stars, performed in the framework of the Additional Programmes belonging to the exoplanetary field, will particularly benefit from...

Aims: The Antarctica Search for Transiting Extrasolar Planets (ASTEP), an automatized 400 mm telescope located at Concordia station in Antarctica, monitored β Pictoris continuously to detect any variability linked to the transit of the Hill sphere of its planet β Pictoris b. The long observation sequence, from March to September 2017, combined...

Context. The CoRoT - Convection Rotation and planetary Transits - space mission is a great opportunity for monitoring stars with excellent time-sampling and unprecedented photometric precision for up to 150 days. As an important benefit, high-quality RR Lyrae light curves are obtained with a quasi-uninterrupted coverage over several pulsation...