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Strong near-infrared emission interior to the dust sublimation radius of young stellar objects MWC 275 and AB Aurigae

Tannirkulam, A. and Monnier, J. D. and Millan-Gabet, R. and Harries, T. J. and Pedretti, E. and ten Brummelaar, T. A. and McAlister, H. and Turner, N. and Sturmann, J. and Sturmann, L. (2008) Strong near-infrared emission interior to the dust sublimation radius of young stellar objects MWC 275 and AB Aurigae. Astrophysical Journal Letters, 677 (1). L51-L54. ISSN 2041-8205.

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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 MWC 275 and AB Aur. Our submilliarcsecond resolution observations unambiguously place the emission between the dust destruction radius and the magnetospheric corotation 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.

Item Type:Article
Related URLs:
URLURL TypeDescription
Tannirkulam, A.0000-0002-9396-5551
Monnier, J. D.0000-0002-3380-3307
Millan-Gabet, R.0000-0003-0447-5866
Harries, T. J.0000-0001-8228-9503
ten Brummelaar, T. A.0000-0002-0114-7915
Additional Information:© 2008 American Astronomical Society. Print publication: Issue 1 (2008 April 10); received 2008 January 14; accepted for publication 2008 February 27; published 2008 March 14. We acknowledge contributions from Nuria Calvet, Michael Sitko, P. J. Goldfinger, Christopher Farrington, and Steve Golden. We also thank the anonymous referee for valuable comments and suggestions. Research at the CHARA Array is supported by the National Science Foundation through grants AST 06-06958 and AST 03-52723 and by the Georgia State University through the offices of the Dean of the College of the Arts and Sciences and the Vice President for Research. This project was partially supported by NASA grant 050283. This publication makes use of NASA’s Astrophysics Data System Abstract Service. The calibrator sizes were obtained with the fBol module of getCal, a package made available by the Michelson Science Center, California Institute of Technology (
Funding AgencyGrant Number
NSFAST 06-06958
NSFAST 03-52723
Georgia State UniversityUNSPECIFIED
Subject Keywords:planetary systems: protoplanetary disks; radiative transfer; stars: pre-main sequence; techniques: interferometric
Issue or Number:1
Record Number:CaltechAUTHORS:TANapjl08
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:13816
Deposited By: Jason Perez
Deposited On:06 Apr 2009 22:41
Last Modified:09 Mar 2020 13:18

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