Imaging the 44 au Kuiper Belt Analog Debris Ring around HD 141569A with GPI Polarimetry

Bruzzone, Juan Sebastián; Metchev, Stanimir; Duchêne, Gaspard; Millar-Blanchaer, Maxwell A.; Dong, Ruobing; Esposito, Thomas M.; Wang, Jason J.; Graham, James R.; Mazoyer, Johan; Wolff, Schuyler; Ammons, S. Mark; Schneider, Adam C.; Greenbaum, Alexandra Z.; Matthews, Brenda C.; Arriaga, Pauline; Bailey, Vanessa P.; Barman, Travis; Bulger, Joanna; Chilcote, Jeffrey; Cotten, Tara; Rosa, Robert De; Doyon, Rene; Fitzgerald, Michael P.; Follette, Katherine B.; Gerard, Benjamin L.; Goodsell, Stephen J.; Hibon, Pascale; Hom, Justin; Hung, Li-Wei; Ingraham, Patrick; Kalas, Paul; Konopacky, Quinn; Larkin, James E.; Macintosh, Bruce; Maire, Jérôme; Marchis, Franck; Marois, Christian; Morzinski, Katie M.; Nielsen, Eric L.; Oppenheimer, Rebecca; Palmer, David; Patel, Rahul; Patience, Jennifer; Perrin, Marshall; Poyneer, Lisa; Pueyo, Laurent; Rajan, Abhijith; Rameau, Julien; Rantakyrö, Fredrik T.; Savransky, Dmitry; Sivaramakrishnan, Anand; Song, Inseok; Soummer, Remi; Thomas, Sandrine; Wallace, J. Kent; Ward-Duong, Kimberly; Wiktorowicz, Sloane

doi:10.3847/1538-3881/ab5d2e

Title: Imaging the 44 au Kuiper Belt Analog Debris Ring around HD 141569A with GPI Polarimetry

Journal Article · Wed Jan 15 00:00:00 UTC 2020 · The Astronomical Journal (Online)

DOI: https://doi.org/10.3847/1538-3881/ab5d2e · OSTI ID:1836926

;

; Millar-Blanchaer, Maxwell A.;

;

; Graham, James R.;

;

In this work, we present the first polarimetric detection of the inner disk component around the pre-main-sequence B9.5 star HD 141569A. Gemini Planet Imager H-band (1.65 μm) polarimetric differential imaging reveals the highest signal-to-noise ratio detection of this ring yet attained and traces structure inward to 0farcs25 (28 au at a distance of 111 pc). The radial polarized intensity image shows the east side of the disk, peaking in intensity at 0farcs40 (44 au) and extending out to 0farcs9 (100 au). There is a spiral arm–like enhancement to the south, reminiscent of the known spiral structures on the outer rings of the disk. The location of the spiral arm is coincident with ¹²CO J = 3–2 emission detected by ALMA and hints at a dynamically active inner circumstellar region. Our observations also show a portion of the middle dusty ring at ~220 au known from previous observations of this system. We fit the polarized H-band emission with a continuum radiative transfer Mie model. Our best-fit model favors an optically thin disk with a minimum dust grain size close to the blowout size for this system, evidence of ongoing dust production in the inner reaches of the disk. The thermal emission from this model accounts for virtually all of the far-infrared and millimeter flux from the entire HD 141569A disk, in agreement with the lack of ALMA continuum and CO emission beyond ~100 au. A remaining 8–30 μm thermal excess a factor of ~2 above our model argues for an as-yet-unresolved warm innermost 5–15 au component of the disk.

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Research Organization:: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)

Sponsoring Organization:: National Aeronautic and Space Administration (NASA); National Science Foundation (NSF); USDOE National Nuclear Security Administration (NNSA)

Contributing Organization:: G. GPIES Survey

Grant/Contract Number:: AC52-07NA27344

OSTI ID:: 1836926

Report Number(s):: LLNL-JRNL--829584; 1045539

Journal Information:: The Astronomical Journal (Online), Journal Name: The Astronomical Journal (Online) Journal Issue: 2 Vol. 159; ISSN 1538-3881

Publisher:: IOP PublishingCopyright Statement

Country of Publication:: United States

Language:: English

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How Bright are Planet-Induced Spiral Arms in Scattered Light? Dong, Ruobing; Fung, Jeffrey arXiv https://doi.org/10.48550/arxiv.1612.00446	text	January 2016
Characterization of the inner disk around HD 141569 A from Keck/NIRC2 L-band vortex coronagraphy Mawet, Dimitri; Choquet, Élodie; Absil, Olivier arXiv https://doi.org/10.48550/arxiv.1612.03091	text	January 2016
Molecular gas in debris disks around young A-type stars Moór, A.; Curé, M.; Kóspál, Á. arXiv https://doi.org/10.48550/arxiv.1709.08414	text	January 2017
ALMA and VLA Observations of the HD 141569 System White, Jacob Aaron; Boley, A. C.; MacGregor, M. A. arXiv https://doi.org/10.48550/arxiv.1711.07489	text	January 2017
Stellar Companions and the Age of HD 141569 and its Circumstellar Disk Weinberger, A. J.; Rich, R. M.; Becklin, E. E. arXiv https://doi.org/10.48550/arxiv.astro-ph/0007170	text	January 2000
Modeling the Infrared Emission from the HD 141569A Disk Li, Aigen; Lunine, J. I. arXiv https://doi.org/10.48550/arxiv.astro-ph/0311070	text	January 2003
Study of the properties and spectral energy distributions of the Herbig AeBe stars HD 34282 and HD 141569 Merín, B.; Montesinos, B.; Eiroa, C. arXiv https://doi.org/10.48550/arxiv.astro-ph/0402599	text	January 2004
Dust Distribution in Gas Disks II: Self Induced Ring Formation Through a Clumping Instability Klahr, H.; Lin, D. N. C. arXiv https://doi.org/10.48550/arxiv.astro-ph/0502536	text	January 2005
Modeling the gas-phase chemistry of the transitional disk around HD 141569A Jonkheid, B.; Kamp, I.; Augereau, J. -C. arXiv https://doi.org/10.48550/arxiv.astro-ph/0603515	text	January 2006
Mid-InfraRed imaging of the circumstellar dust around three Herbig Ae stars : HD135344, CQTau, HD163296 Doucet, C.; Pantin, E.; Lagage, P. O. arXiv https://doi.org/10.48550/arxiv.astro-ph/0608615	text	January 2006

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