Journal article
Investigating the young AU Mic system with SPIRou: large-scale stellar magnetic field and close-in planet mass
Abstract
ABSTRACT
We present a velocimetric and spectropolarimetric analysis of 27 observations of the 22-Myr M1 star AU Microscopii (AU Mic) collected with the high-resolution YJHK (0.98–2.35 μm) spectropolarimeter SPIRou from 2019 September 18 to November 14. Our radial velocity (RV) time-series exhibits activity-induced fluctuations of 45 m s−1 rms, ∼3 times smaller than those measured in the optical domain, that we filter using …
Authors
Klein B; Donati J-F; Moutou C; Delfosse X; Bonfils X; Martioli E; Fouqué P; Cloutier R; Artigau É; Doyon R
Journal
Monthly Notices of the Royal Astronomical Society, Vol. 502, No. 1, pp. 188–205
Publisher
Oxford University Press (OUP)
Publication Date
January 28, 2021
DOI
10.1093/mnras/staa3702
ISSN
0035-8711