Spiral Structure in the Gas Disk of TW Hya

11 Oct 2019 Teague Richard Bae Jaehan Huang Jane Bergin Edwin

We report the detection of spiral substructure in both the gas velocity and temperature structure of the disk around TW~Hya, suggestive of planet-disk interactions with an unseen planet. Perturbations from Keplerian rotation tracing out a spiral pattern are observed in the SE of the disk, while significant azimuthal perturbations in the gas temperature are seen in the outer disk, outside 90~au, extending the full azimuth of the disk... (read more)

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