| Download | - View accepted manuscript: An Exo–Kuiper Belt with an extended halo around HD 191089 in scattered light (PDF, 3.7 MiB)
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| DOI | Resolve DOI: https://doi.org/10.3847/1538-4357/ab3403 |
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| Author | Search for: Ren, Bin; Search for: Choquet, Élodie; Search for: Perrin, Marshall D.; Search for: Duchêne, Gaspard; Search for: Debes, John H.; Search for: Pueyo, Laurent; Search for: Rice, Malena; Search for: Chen, Christine; Search for: Schneider, Glenn; Search for: Esposito, Thomas M.; Search for: Poteet, Charles A.; Search for: Wang, Jason J.; Search for: Ammons, S. Mark; Search for: Ansdell, Megan; Search for: Arriaga, Pauline; Search for: Bailey, Vanessa P.; Search for: Barman, Travis; Search for: Bruzzone, Juan Sebastián; Search for: Bulger, Joanna; Search for: Chilcote, Jeffrey; Search for: Cotten, Tara; Search for: De Rosa, Robert J.; Search for: Doyon, Rene; Search for: Fitzgerald, Michael P.; Search for: Follette, Katherine B.; Search for: Goodsell, Stephen J.; Search for: Gerard, Benjamin L.1; Search for: Graham, James R.; Search for: Greenbaum, Alexandra Z.; Search for: Hagan, J. Brendan; Search for: Hibon, Pascale; Search for: Hines, Dean C.; Search for: Hung, Li-Wei; Search for: Ingraham, Patrick; Search for: Kalas, Paul; Search for: Konopacky, Quinn; Search for: Larkin, James E.; Search for: Macintosh, Bruce; Search for: Maire, Jérôme; Search for: Marchis, Franck; Search for: Marois, Christian1; Search for: Mazoyer, Johan; Search for: Ménard, François; Search for: Metchev, Stanimir; Search for: Millar-Blanchaer, Maxwell A.; Search for: Mittal, Tushar; Search for: Moerchen, Margaret; Search for: Nielsen, Eric L.; Search for: N’Diaye, Mamadou; Search for: Oppenheimer, Rebecca; Search for: Palmer, David; Search for: Patience, Jennifer; Search for: Pinte, Christophe; Search for: Poyneer, Lisa; Search for: Rajan, Abhijith; Search for: Rameau, Julien; Search for: Rantakyrö, Fredrik T.; Search for: Ruffio, Jean-Baptiste; Search for: Ryan, Dominic; Search for: Savransky, Dmitry; Search for: Schneider, Adam C.; Search for: Sivaramakrishnan, Anand; Search for: Song, Inseok; Search for: Soummer, Rémi; Search for: Stark, Christopher; Search for: Thomas, Sandrine; Search for: Vigan, Arthur; Search for: Wallace, J. Kent; Search for: Ward-Duong, Kimberly; Search for: Wiktorowicz, Sloane; Search for: Wolff, Schuyler; Search for: Ygouf, Marie; Search for: Norman, Colin |
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| Affiliation | - National Research Council of Canada. Herzberg Astronomy and Astrophysics
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| Format | Text, Article |
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| Subject | protoplanetary disks; radiative transfer; stars: imaging; stars: individual (HD 191089); techniques: image processing |
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| Abstract | We have obtained Hubble Space Telescope STIS and NICMOS and Gemini/GPI scattered-light images of the HD 191089 debris disk. We identify two spatial components: a ring resembling the Kuiper Belt in radial extent (FWHM ~ 25 au, centered at ~46 au) and a halo extending to ~640 au. We find that the halo is significantly bluer than the ring, consistent with the scenario that the ring serves as the "birth ring" for the smaller dust in the halo. We measure the scattering phase functions in the 30°–150° scattering-angle range and find that the halo dust is more forward- and backward-scattering than the ring dust. We measure a surface density power-law index of −0.68 ± 0.04 for the halo, which indicates the slowdown of the radial outward motion of the dust. Using radiative transfer modeling, we attempt to simultaneously reproduce the (visible) total and (near-infrared) polarized intensity images of the birth ring. Our modeling leads to mutually inconsistent results, indicating that more complex models, such as the inclusion of more realistic aggregate particles, are needed. |
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| Publication date | 2019-09-04 |
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| Publisher | American Astronomical Society
IOP |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | 90689554-e00c-496f-b20a-77793867864c |
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| Record created | 2020-11-20 |
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| Record modified | 2020-12-16 |
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