A measure of the size of the magnetospheric accretion region in TW Hydrae

Nature, Published online: 26 August 2020; doi:10.1038/s41586-020-2613-1

The size of the inner disk of the T Tauri star TW Hydrae is determined using optical long-baseline interferometric observations, indicating that hydrogen emission comes from a region approximately 3.5 stellar radii across.

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