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• W2626784103 startingPage "77" @default.
• W2626784103 abstract "For one decade, the spectral type and age of the ρ Oph object IRS-48 were subject to debate and mystery. Modeling its disk with mid-infrared to millimeter observations led to various explanations to account for the complex intricacy of dust holes and gas-depleted regions. We present multi-epoch high-angular-resolution interferometric near-infrared data of spatially resolved emissions in the first 15 au of IRS-48, known to have very strong polycyclic aromatic hydrocarbon (PAH) emissions within this dust-depleted region. We make use of new Sparse-Aperture-Masking data to instruct a revised radiative-transfer model, where spectral energy distribution fluxes and interferometry are jointly fitted. Neutral and ionized PAH, very small grains (VSG), and classical silicates are incorporated into the model; new stellar parameters and extinction laws are explored. A bright (42 L⊙) and hence large (2.5 R⊙) central star with Av = 12.5 mag and Rv = 6.5 requires less near-infrared excess: the inner-most disk at ≈1 au is incompatible with the interferometric data. The revised stellar parameters place this system on a 4 Myr evolutionary track, four times younger than the previous estimations, which is in better agreement with the surrounding ρ Oph region and disk-lifetime observations. The disk-structure solution converges to a classical-grain outer disk from 55 au combined with an unsettled and fully resolved VSG and PAH ring, between 11 and 26 au. We find two overluminosities in the PAH ring at color-temperatures consistent with the radiative transfer simulations; one follows a Keplerian circular orbit at 14 au. We show a depletion of a factor of ≈5 of classical dust grains up to 0.3 mm compared to very small particles: the IRS-48 disk is nearly void of dust grains in the first 55 au. A 3.5 MJup planet on a 40 au orbit can qualitatively explain the new disk structure." @default.
• W2626784103 created "2017-06-23" @default.
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• W2626784103 date "2017-06-15" @default.
• W2626784103 modified "2023-10-15" @default.
• W2626784103 title "A Resolved and Asymmetric Ring of PAHs within the Young Circumstellar Disk of IRS 48" @default.
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• W2626784103 cites W1966244186 @default.
• W2626784103 cites W1968124598 @default.
• W2626784103 cites W1972255462 @default.
• W2626784103 cites W1974771230 @default.
• W2626784103 cites W1980940755 @default.
• W2626784103 cites W1982593459 @default.
• W2626784103 cites W1994517704 @default.
• W2626784103 cites W2004274588 @default.
• W2626784103 cites W2005276762 @default.
• W2626784103 cites W2006869439 @default.
• W2626784103 cites W2008851409 @default.
• W2626784103 cites W2015400527 @default.
• W2626784103 cites W2017466075 @default.
• W2626784103 cites W2023574719 @default.
• W2626784103 cites W2025788510 @default.
• W2626784103 cites W2028041709 @default.
• W2626784103 cites W2031662530 @default.
• W2626784103 cites W2032155631 @default.
• W2626784103 cites W2034608771 @default.
• W2626784103 cites W2037477663 @default.
• W2626784103 cites W2038613225 @default.
• W2626784103 cites W2039427272 @default.
• W2626784103 cites W2045109688 @default.
• W2626784103 cites W2047196043 @default.
• W2626784103 cites W2048274049 @default.
• W2626784103 cites W2050287135 @default.
• W2626784103 cites W2052652880 @default.
• W2626784103 cites W2052937506 @default.
• W2626784103 cites W2065196437 @default.
• W2626784103 cites W2065989004 @default.
• W2626784103 cites W2068433364 @default.
• W2626784103 cites W2071733898 @default.
• W2626784103 cites W2075105883 @default.
• W2626784103 cites W2077017611 @default.
• W2626784103 cites W2077892809 @default.
• W2626784103 cites W2080259092 @default.
• W2626784103 cites W2080426384 @default.
• W2626784103 cites W2080851787 @default.
• W2626784103 cites W2081836285 @default.
• W2626784103 cites W2083224201 @default.
• W2626784103 cites W2084517007 @default.
• W2626784103 cites W2085638528 @default.
• W2626784103 cites W2088853013 @default.
• W2626784103 cites W2089665967 @default.
• W2626784103 cites W2107490503 @default.
• W2626784103 cites W2117409238 @default.
• W2626784103 cites W2128441099 @default.
• W2626784103 cites W2129608268 @default.
• W2626784103 cites W2131011360 @default.
• W2626784103 cites W2140551581 @default.
• W2626784103 cites W2142750987 @default.
• W2626784103 cites W2148953146 @default.
• W2626784103 cites W2158041046 @default.
• W2626784103 cites W2167635287 @default.
• W2626784103 cites W2168175751 @default.
• W2626784103 cites W2171949060 @default.
• W2626784103 cites W2174187778 @default.
• W2626784103 cites W2593524231 @default.
• W2626784103 cites W3040915625 @default.
• W2626784103 cites W3098002080 @default.
• W2626784103 cites W3098885964 @default.
• W2626784103 cites W3099093368 @default.
• W2626784103 cites W3099125925 @default.
• W2626784103 cites W3100521337 @default.
• W2626784103 cites W3100861017 @default.
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• W2626784103 doi "https://doi.org/10.3847/1538-4357/aa74b7" @default.
• W2626784103 hasPublicationYear "2017" @default.
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