activity
19982025
most citedThe On/Off Nature of Star-Planet Interactions

282 citations · 3.6k across the 62 of their papers we have counts for

collaborators

63 papers

astro-ph.EP2025★ 11 cited

Diving into the planetary system of Proxima with NIRPS -- Breaking the metre per second barrier in the infrared

Alejandro Suárez Mascareño, Étienne Artigau, Lucile Mignon +138

We obtained 420 high-resolution spectra of Proxima, over 159 nights, using the Near Infra Red Planet Searcher (NIRPS). We derived 149 nightly binned radial velocity measurements wi…

astro-ph.EP2025

Blind search for activity-sensitive lines in the near-infrared using HARPS and NIRPS observations of Proxima and Gl 581

João Gomes da Silva, Elisa Delgado-Mena, Nuno C. Santos +145

Stellar activity variability is one of the main obstacles to the detection of Earth-like planets using the RV method. The aim of this work is to measure the effect of activity in t…

astro-ph.SR2025★ 2 cited

Discovery of the binary nature of the magnetospheric B-type star Oph A

M. E. Shultz, I. Berry, D. Bohlender +11

The nearby B-type star Oph A was recently identified as a rapidly rotating magnetic B-type star with variable radio and X-ray emission consistent with a magnetospheric origin.…

astro-ph.SR2024★ 3 cited

HD 34736: An intensely magnetised double-lined spectroscopic binary with rapidly-rotating chemically peculiar B-type components

E. Semenko, O. Kochukhov, Z. Mikulášek +21

We report the results of a comprehensive study of the spectroscopic binary (SB2) system HD 34736 hosting two chemically peculiar (CP) late B-type stars. Using new and archival obse…

astro-ph.SR2022★ 7 cited

Analysis of eight magnetic chemically peculiar stars with rotational modulation

O. Kobzar, V. Khalack, D. Bohlender +9

Since the end of 2018, the Transiting Exoplanet Survey Satellite (TESS) has provided stellar photometry to the astronomical community. We have used TESS data to study rotational mo…

astro-ph.SR2022★ 65 cited

MOBSTER -- VI. The crucial influence of rotation on the radio magnetospheres of hot stars

M. E. Shultz, S. P. Owocki, A. ud-Doula +13

Numerous magnetic hot stars exhibit gyrosynchrotron radio emission. The source electrons were previously thought to be accelerated to relativistic velocities in the current sheet f…