The T Tauri star V410 Tau in the eyes of SPIRou and TESS

Abstract

We report results of a spectropolarimetric and photometric monitoring of the weak-line T Tauri star V410 Tau based on data collected mostly with SPIRou, the near-infrared (NIR) spectropolarimeter recently installed at the Canada-France-Hawaii Telescope, as part of the SPIRou Legacy Survey large programme, and with TESS between October and December 2019. Using Zeeman-Doppler Imaging (ZDI), we obtained the first maps of photospheric brightness and large-scale magnetic field at the surface of this young star derived from NIR spectropolarimetric data. For the first time, ZDI is also simultaneously applied to high-resolution spectropolarimetric data and very-high-precision photometry. V410 Tau hosts both dark and bright surface features and magnetic regions similar to those previously imaged with ZDI from optical data, except for the absence of a prominent dark polar spot. The brightness distribution is significantly less contrasted than its optical equivalent, as expected from the difference in wavelength. The large-scale magnetic field (~410 G), found to be mainly poloidal, features a dipole of ~390 G, again compatible with previous studies at optical wavelengths. NIR data yield a surface differential rotation slightly weaker than that estimated in the optical at previous epochs. Finally, we measured the radial velocity of the star and filtered out the stellar activity jitter using both ZDI and Gaussian Process Regression down to a precision of ~0.15 and 0.08 $\mathrm{km}{\mathrm{s}}^{-1}$ RMS, respectively, confirming the previously published upper limit on the mass of a potential close-in massive planet around V410 Tau.

19 pages, 27 figures, accepted for publication in MNRAS

References in corpus (24)

• The Transiting Exoplanet Survey Satellite
• The generalised Lomb-Scargle periodogram. A new formalism for the floating-mean and Keplerian periodograms
• New evolutionary models for pre-main sequence and main sequence low-mass stars down to the hydrogen-burning limit
• Planets and Stellar Activity: Hide and Seek in the CoRoT-7 system
• The surprising magnetic topology of tauSco: fossil remnant or dynamo output?
• Large-scale magnetic topologies of late M dwarfs
• Magnetospheric accretion-ejection processes in the classical T Tauri star AA
• A planet within the debris disk around the pre-main-sequence star AU Microscopii
• Magnetic fields and accretion flows on the classical T Tauri star V2129 Oph
• SPIRou: nIR velocimetry & spectropolarimetry at the CFHT
• Four newborn planets transiting the young solar analog V1298 Tau
• Results of the ROTOR-program. II. The long-term photometric variability of weak-line T Tauri stars
• Placing the spotted T Tauri star LkCa 4 on an HR diagram
• Gaia EDR3 Reveals the Substructure and Complicated Star Formation History of the Greater Taurus-Auriga Star Forming Complex
• A hot Jupiter around the very active weak-line T Tauri star TAP 26
• Investigating the young AU~Mic system with SPIRou: large-scale stellar magnetic field and close-in planet mass
• The Magnetic Topology of the Weak-Lined T Tauri Star V410 - A Simultaneous Temperature and Magnetic Field Inversion
• A Young Planet Search in Visible and IR Light: DN Tau, V836 Tau, and V827 Tau
• A Bayesian periodogram finds evidence for three planets in HD 11964
• Modelling the magnetic activity & filtering radial velocity curves of young Suns: the weak-line T Tauri star LkCa 4
• The hot Jupiter of the magnetically-active weak-line T Tauri star V830 Tau
• Telluric-line subtraction in high-accuracy velocimetry: a PCA-based approach
• Magnetic activity and radial velocity filtering of young Suns: The weak-line T Tauri stars Par 1379 and Par 2244
• Simulated mass measurements of the young planet K2-33b

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• Monitoring the young planet host V1298 Tau with SPIRou: planetary system and evolving large-scale magnetic field
• The active weak-line T Tauri star LkCa 4 observed with SPIRou and TESS
• Magnetic topologies of two weak-line T Tauri stars TAP 4 and TAP 40