Av. Antônio Carlos

Nov 8, 2024 | academic.oup.com | Université de Toulouse |Departamento de Física |Av. Antônio Carlos |Konkoly Observatory

This paper presents near-infrared spectropolarimetric and velocimetric observations of the young planet-hosting T Tauri star PDS 70, collected with SPIRou at the 3.6-m Canada-France-Hawaii Telescope from 2020 to 2024. Clear Zeeman signatures from magnetic fields at the surface of PDS 70 are detected in our data set of 40 circularly polarized spectra.

Jun 7, 2024 | academic.oup.com | Université de Toulouse |Departamento de Física |Av. Antônio Carlos

It is now well established, through documented observations collected with various instruments over the last decades, that stars and their planets form at the same time, following the collapse of large gravitationally unstable turbulent molecular clouds.

Mar 12, 2024 | academic.oup.com | Université de Toulouse |Departamento de Física |Av. Antônio Carlos

We report new observations of the classical T Tauri star CI Tau with the SPIRou near-infrared spectropolarimeter and velocimeter at the Canada-France-Hawaii Telescope (CFHT) in late 2019, 2020 and 2022, complemented with observations obtained with the ESPaDOnS optical spectropolarimeter at CFHT in late 2020. From our SPIRou and ESPaDOnS spectra, to which we applied Least-Squares Deconvolution, we infer longitudinal fields clearly modulated with the 9-d rotation period of CI Tau.

Feb 19, 2024 | rairo-ro.org | Av. Antônio Carlos |Belo Horizonte |Minas Gerais

RAIRO-Oper. Res.

Jun 5, 2023 | academic.oup.com | Departamento de Matemática |Av. Antônio Carlos |Belo Horizonte

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