Strong Near-Infrared Emission Interior to the Dust-Sublimation Radius of Young Stellar Objects MWC275 and AB Aur

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Authors
Tannirkulam, A.
Monnier, J. D.
Millan-Gabet, R.
Harries, T. J.
Pedretti, E.
Brummelaar, T. A. ten
McAlister, H.
Turner, N.
Sturmann, J.
Sturmann, L.
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Abstract
Description
Using the longest optical-interferometeric baselines currently available, we have detected strong near-infrared (NIR) emission from inside the dust-destruction radius of Herbig Ae stars MWC275 and AB Aur. Our sub-milli-arcsecond resolution observations unambiguously place the emission between the dust-destruction radius and the magnetospheric co-rotation radius. We argue that this new component corresponds to hot gas inside the dust-sublimation radius, confirming recent claims based on spectrally-resolved interferometry and dust evaporation front modeling.
Comment: 12 pages, 4 figures, Accepted for publication in ApJL
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Astrophysics
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