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Probing the Inner Disk Emission of the Herbig Ae Stars HD 163296 and HD 190073

Setterholm, Benjamin R. and Monnier, John D. and Davies, Claire L. and Kreplin, Alexander and Kraus, Stefan and Baron, Fabien and Aarnio, Alicia and Berger, Jean-Philippe and Calvet, Nuria and Curé, Michel and Kanaan, Samer and Kloppenborg, Brian and Le Bouquin, Jean-Baptiste and Millan-Gabet, Rafael and Rubinstein, Adam E. and Sitko, Michael L. and Sturmann, Judit and ten Brummelaar, Theo A. and Touhami, Yamina (2018) Probing the Inner Disk Emission of the Herbig Ae Stars HD 163296 and HD 190073. Astrophysical Journal, 869 (2). Art. No. 164. ISSN 1538-4357. doi:10.3847/1538-4357/aaef2c.

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The physical processes occurring within the inner few astronomical units of protoplanetary disks surrounding Herbig Ae stars are crucial to setting the environment in which the outer planet-forming disk evolves and put critical constraints on the processes of accretion and planet migration. We present the most complete published sample of high angular resolution H- and K-band observations of the stars HD 163296 and HD 190073, including 30 previously unpublished nights of observations of the former and 45 nights of the latter with the CHARA long-baseline interferometer, in addition to archival VLTI data. We confirm previous observations suggesting that significant near-infrared emission originates within the putative dust evaporation front of HD 163296 and show that this is the case for HD 190073 as well. The H- and K-band sizes are the same within (3 ± 3)% for HD 163296 and within (6 ± 10)% for HD 190073. The radial surface brightness profiles for both disks are remarkably Gaussian-like with little or no sign of the sharp edge expected for a dust evaporation front. Coupled with spectral energy distribution analysis, our direct measurements of the stellar flux component at the H and K bands suggest that HD 190073 is much younger (<400 kyr) and more massive (~5.6 M ⊙) than previously thought, mainly as a consequence of the new Gaia distance (891 pc).

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Setterholm, Benjamin R.0000-0001-5980-0246
Monnier, John D.0000-0002-3380-3307
Davies, Claire L.0000-0001-9764-2357
Kreplin, Alexander0000-0002-0911-9505
Kraus, Stefan0000-0001-6017-8773
Baron, Fabien0000-0002-8376-8941
Aarnio, Alicia0000-0002-1327-9659
Berger, Jean-Philippe0000-0001-5025-0428
Calvet, Nuria0000-0002-3950-5386
Kanaan, Samer0000-0003-1190-4825
Kloppenborg, Brian0000-0003-0350-5453
Millan-Gabet, Rafael0000-0003-0447-5866
Sitko, Michael L.0000-0003-1799-1755
ten Brummelaar, Theo A.0000-0002-0114-7915
Additional Information:© 2018. The American Astronomical Society. Received 2018 May 1; revised 2018 November 2; accepted 2018 November 5; published 2018 December 21. J.D.M. and B.R.S. acknowledge support from NSF-AST 1506540, and A.A. acknowledges support from NSF-AST 1311698. C.L.D., A.K., and S.K. acknowledge support from the ERC Starting Grant "ImagePlanetFormDiscs" (grant agreement no. 639889), STFC Rutherford fellowship/grant (ST/J004030/1, ST/K003445/1), and Philip Leverhulme Prize (PLP-2013-110). F.B. acknowledges support from NSF-AST 1210972 and 1445935. M.S. acknowledges support by the NASA Origins of Solar Systems grant NAG5-9475 and NASA Astrophysics Data Program contract NNH05CD30C. We thank William Danchi and Peter Tuthill for use of the previously unpublished Keck aperture masking data and also Paul Boley for his Python OIFITS module (available at The CHARA Array is supported by the National Science Foundation under grant nos. AST-1211929, AST-1636624, and AST-1715788. Institutional support has been provided from the GSU College of Arts and Sciences and the GSU Office of the Vice President for Research and Economic Development. This research has made use of the Jean-Marie Mariotti Center SearchCal (Chelli et al. 2016) service (available at, codeveloped by LAGRANGE and IPAG, and of CDS Astronomical Databases SIMBAD and VIZIER (available at This work has made use of data from the European Space Agency (ESA) mission Gaia (Gaia Collaboration et al. 2016) (, processed by the Gaia Data Processing and Analysis Consortium (DPAC, Funding for the DPAC has been provided by national institutions, in particular the institutions participating in the Gaia Multilateral Agreement. This research has also made use of the SIMBAD database (Wenger et al. 2000), operated at CDS, Strasbourg, France, and NASA's Astrophysics Data System Bibliographic Services. Facilities: CHARA - Center for High Angular Resolution Astronomy interferometer, VLTI - The Very Large Telescope Interferometer, Keck - Software: SearchCal, amdlib,, Bayestar17, PARSEC.
Group:Infrared Processing and Analysis Center (IPAC)
Funding AgencyGrant Number
European Research Council (ERC)639889
Science and Technology Facilities Council (STFC)ST/J004030/1
Science and Technology Facilities Council (STFC)ST/K003445/1
Leverhulme TrustPLP-2013-110
Georgia State UniversityUNSPECIFIED
Gaia Multilateral AgreementUNSPECIFIED
Subject Keywords:circumstellar matter; protoplanetary disks; stars: pre-main sequence; techniques: high angular resolution; techniques: interferometric
Issue or Number:2
Record Number:CaltechAUTHORS:20181221-091725666
Persistent URL:
Official Citation:Benjamin R. Setterholm et al 2018 ApJ 869 164
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:91947
Deposited By: George Porter
Deposited On:21 Dec 2018 18:23
Last Modified:16 Nov 2021 03:45

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