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

Autor: C. Moutou, Pascal Fouqué, L. Lehmann, X. Delfosse, S. H. P. Alencar, B. Finociety, Jerome Bouvier, René Doyon, J.-F. Donati, B. Zaire, L. Yu, Baptiste Klein, Guillaume Hébrard, K. N. Grankin, Francois Menard, Étienne Artigau, Moira Jardine, Ágnes Kóspál
Přispěvatelé: Institut de recherche en astrophysique et planétologie (IRAP), Institut national des sciences de l'Univers (INSU - CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS), University of St Andrews. School of Physics and Astronomy, Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS)
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Brightness
T-NDAS
FOS: Physical sciences
Astrophysics
Astrophysics::Cosmology and Extragalactic Astrophysics
polarimetric [Techniques]
01 natural sciences
law.invention
Telescope
Photometry (optics)
Planet
law
0103 physical sciences
QB Astronomy
Differential rotation
Astrophysics::Solar and Stellar Astrophysics
010303 astronomy & astrophysics
Solar and Stellar Astrophysics (astro-ph.SR)
QC
Astrophysics::Galaxy Astrophysics
QB
Earth and Planetary Astrophysics (astro-ph.EP)
Physics
individual: V410 Tau [Stars]
010308 nuclear & particles physics
Astronomy and Astrophysics
Radial velocity
magnetic field [Stars]
T Tauri star
QC Physics
Astrophysics - Solar and Stellar Astrophysics
Space and Planetary Science
[SDU]Sciences of the Universe [physics]
imaging [Stars]
Polar
Astrophysics::Earth and Planetary Astrophysics
activity [Stars]
Astrophysics - Earth and Planetary Astrophysics
Zdroj: Monthly Notices of the Royal Astronomical Society
Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P-Oxford Open Option A, 2021, 508 (3), pp.3427-3445. ⟨10.1093/mnras/stab2778⟩
Monthly Notices of the Royal Astronomical Society, 2021, 508 (3), pp.3427-3445. ⟨10.1093/mnras/stab2778⟩
ISSN: 0035-8711
1365-2966
DOI: 10.1093/mnras/stab2778⟩
Popis: 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 $\mathrm{km\,s^{-1}}$ 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
Databáze: OpenAIRE
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