activity
20042025
most citedDetection of a weak surface magnetic field on Sirius A: are all tepid stars magnetic ?

100 citations · 448 across the 12 of their papers we have counts for

collaborators

12 papers

astro-ph.SR2025

Stable magnetic fields and changing starspots on Vega -- An ultra-deep decadal survey at Pic du Midi and OHP

T. Böhm, M. Holschneider, P. Petit +4

Monitoring magnetic and activity variations in A- and B-type stars with ultra-weak magnetic fields is essential to understand the origin and evolution of these fields in this regio…

astro-ph.SR2021★ 12 cited

NGC 6611 601: A hot pre-main sequence spectroscopic binary containing a centrifugal magnetosphere host star

M. E. Shultz, E. Alecian, V. Petit +5

W 601 (NGC 6611 601) is one of the handful of known magnetic Herbig Ae/Be stars. We report the analysis of a large dataset of high-resolution spectropolarimetry. The star is a prev…

astro-ph.SR2018★ 76 cited

The magnetic fields of intermediate-mass T Tauri stars : I. Magnetic detections and fundamental stellar parameters

Florent Villebrun, Evelyne Alecian, Gaitee Hussain +13

Context. The origin of the fossil magnetic fields detected in 5 to 10% of intermediate-mass main sequence stars is still highly debated. Aims. We want to bring observational constr…

astro-ph.SR2017★ 32 cited

Magnetic fields of intermediate mass T Tauri stars

A. Lavail, O. Kochukhov, G. A. J. Hussain +3

Aims. In this paper, we aim to measure the strength of the surface magnetic fields for a sample of five intermediate mass T Tauri stars and one low mass T Tauri star from late-F to…

astro-ph.SR2017★ 70 cited

BRITE-Constellation high-precision time-dependent photometry of the early-O-type supergiant Puppis unveils the photospheric drivers of its small- and large-scale wind structures

Tahina Ramiaramanantsoa, Anthony F. J. Moffat, Robert Harmon +33

From months of dual-band optical photometric monitoring at the mmag level, BRITE-Constellation has revealed two simultaneous types of variability in the O4I(n)fp star …

astro-ph.SR2014★ 38 cited

Discovery of starspots on Vega - First spectroscopic detection of surface structures on a normal A-type star

T. Böhm, M. Holschneider, F. Lignières +8

The theoretically studied impact of rapid rotation on stellar evolution needs to be confronted with the results of high resolution spectroscopy-velocimetry observations. A weak sur…