Data di Pubblicazione:
2019
Citazione:
Detection of Continuum Submillimeter Emission Associated with Candidate Protoplanets / A. Isella, M. Benisty, R. Teague, J. Bae, M. Keppler, S. Facchini, L. Pérez. - In: THE ASTROPHYSICAL JOURNAL LETTERS. - ISSN 2041-8205. - 879:2(2019), pp. L25.1-L25.10. [10.3847/2041-8213/ab2a12]
Abstract:
We present the discovery of a spatially unresolved source of submillimeter continuum emission (lambda = 855 mu m) associated with a young planet, PDS 70 c, recently detected in Ha 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 x 10(-3) M-circle plus and 4.2 x 10(-3) M-circle plus. 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.
Tipologia IRIS:
01 - Articolo su periodico
Keywords:
instrumentation: high angular resolution; instrumentation: interferometers; planetary systems; planet-disk interactions; planets and satellites: formation; protoplanetary disks
Elenco autori:
A. Isella, M. Benisty, R. Teague, J. Bae, M. Keppler, S. Facchini, L. Pérez
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