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New Spatially Resolved Imaging of the SR 21 Transition Disk and Constraints on the Small-grain Disk Geometry

Sallum, S.; Skemer, A. J.; Eisner, J. A.; van der Marel, N.; Sheehan, P. D.; Close, Laird; Ireland, Michael; Males, Jared; Morzinski, Katie; Bailey, V. P.; Briguglio, Runa


We present new 0.6–4 μm imaging of the SR 21 transition disk from Keck/NIRC2 and Magellan/MagAO. The protoplanetary disk around SR 21 has a large (∼30–40 au) clearing first inferred from its spectral energy distribution and later detected in submillimeter imaging. Both the gas and small dust grains are known to have a different morphology, with an inner truncation in CO at ∼7 au, and micron-sized dust detected within the millimeter clearing. Previous near-infrared imaging could not...[Show more]

CollectionsANU Research Publications
Date published: 2019
Type: Journal article
Source: The Astrophysical Journal
DOI: 10.3847/1538-4357/ab3dae
Access Rights: Open Access


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