Observational Diagnostics of X-ray-Irradiated Protoplanetary Disks

Astronomy and Astrophysics – Astronomy

Scientific paper

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Scientific paper

Strong X-ray irradiation from young stars can heat and ionize the gas at the surface of protoplanetary disks, thereby affecting physical models for accretion and for disk dissipation. I review the observational evidence for warm X-ray-irradiated disks, including emission in lines of [Ne II], H2, and CO. I then discuss these lines in the context of irradiated disk models and describe how Herschel can be used to test such models.

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