ppetit

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Projects

Aug 15, 2017

By ppetit

Spectral signatures of surface spots were recently discovered from high cadence observations of the A star Vega. We aim at constraining the surface d…

Mar 01, 2015

By ppetit

(shortened for arXiv) We aim to progress towards more efficient exoplanet detection around active stars by optimizing the use of Doppler Imaging in r…

Nov 14, 2013

By Stephen.Marsden

Stellar magnetic field measurements obtained from spectropolarimetry offer key data for activity and dynamo studies, and we present the results of a …

Dec 04, 2012

By savita

Stellar activity cycles are the manifestation of dynamo process running in the stellar interiors. They have been observed during years to decades tha…

Sep 30, 2011

By ppetit

We present the result of a highly sensitive spectropolarimetric study dedicated to intermediate mass stars. We report the detection of sub-gauss surf…

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ppetit

Projects

Spot distribution and fast surface evolution on Vega

A maximum entropy approach to detect close-in giant planets around …

A Bcool magnetic snapshot survey of solar-type stars

Constraining magnetic-activity modulations in 3~solar-like stars ob…

Weak magnetic fields of intermediate-mass stars

Credentials & highlights

Social

ppetit

Projects

Spot distribution and fast surface evolution on Vega

A maximum entropy approach to detect close-in giant planets around …

A Bcool magnetic snapshot survey of solar-type stars

Constraining magnetic-activity modulations in 3~solar-like stars ob…

Weak magnetic fields of intermediate-mass stars

Credentials & highlights

Social

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