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Journal Articles The Astrophysical Journal Letters Year : 2019

Detection of Continuum Submillimeter Emission Associated with Candidate Protoplanets

Andrea Isella
  • Function : Author
Richard Teague
  • Function : Author
Jaehan Bae
  • Function : Author
Miriam Keppler
  • Function : Author
Stefano Facchini
  • Function : Author
Laura Pérez
  • Function : Author

Abstract

We present the discovery of a spatially unresolved source of submillimeter continuum emission (λ = 855 μm) associated with a young planet, PDS 70 c, recently detected in Hα emission around the 5 Myr old T Tauri star PDS 70. We interpret the emission as originating from a dusty circumplanetary disk with a dust mass between 2 × 10-3 M and 4.2 × 10-3 M . Assuming a standard gas-to-dust ratio of 100, the ratio between the total mass of the circumplanetary disk and the mass of the central planet would be between 10-4 and 10-5. Furthermore, we report the discovery of another compact continuum source located 0.″074 ± 0.″013 southwest of a second known planet in this system, PDS 70 b, that was previously detected in near-infrared images. We speculate that the latter source might trace dust orbiting in proximity of the planet, but more sensitive observations are required to unveil its nature.

Dates and versions

insu-03703850 , version 1 (24-06-2022)

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Andrea Isella, Myriam Benisty, Richard Teague, Jaehan Bae, Miriam Keppler, et al.. Detection of Continuum Submillimeter Emission Associated with Candidate Protoplanets. The Astrophysical Journal Letters, 2019, 879, ⟨10.3847/2041-8213/ab2a12⟩. ⟨insu-03703850⟩
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