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Article Dans Une Revue The Astrophysical Journal Année : 2019

An Exo-Kuiper Belt with An Extended Halo around HD 191089 in Scattered Light

Bin Ren (1, 2) , Elodie Choquet (3, 4, 5) , Marshall Perrin (6) , Gaspard Duchêne (7, 8) , John H Debes (6) , Laurent Pueyo (6) , Malena Rice (9) , Christine H Chen (6) , Glenn Schneider (10) , Thomas M. Esposito (7) , Charles A Poteet (6) , Jason J Wang (3) , S. Mark Ammons (11) , Megan Ansdell (7) , Pauline Arriaga (12) , Vanessa P Bailey (5) , Travis Barman (13) , Juan Sebastián Bruzzone (14) , Joanna Bulger (15) , Jeffrey Chilcote (16) , Tara Cotten (17) , Robert J de Rosa (7) , Rene Doyon (18) , Michael P Fitzgerald (12) , Katherine B Follette (19) , Stephen J Goodsell (20) , Benjamin Gérard (21, 22) , James R Graham (7) , Alexandra Z Greenbaum (23) , J. Brendan Brendan Hagan (6) , Pascale Hibon (20) , Dean C Hines (6) , Li-Wei Hung (24) , Patrick Ingraham (25) , Paul Kalas (7, 26) , Quinn Konopacky (27) , James J Larkin (28) , Bruce Macintosh (29) , Jérôme Maire (27) , Franck Marchis (26) , Christian Marois (21, 22) , Johan Mazoyer (5) , François Ménard (8) , Stanimir Metchev (14, 30) , Maxwell A Millar-Blanchaer (5) , Tushar Mittal (31) , Margaret Moerchen (32) , Eric L Nielsen (29) , Mamadou N’diaye (33) , Rebecca Oppenheimer (34) , David Palmer (11) , Jennifer Patience (35) , Christophe Pinte (8, 36) , Lisa Poyneer (11) , Abhijith Rajan (6) , Julien Rameau (18) , Fredrik Rantakyro (20) , Jean-Baptiste Ruffio (29) , Dominic H. Ryan (7) , Dmitry Savransky (37) , Adam C Schneider (35) , Anand Sivaramakrishnan (6) , Inseok Song (17) , Rémi Soummer (6) , Christopher Stark (6) , Sandrine Thomas (27) , Arthur Vigan (4) , J. Kent Kent Wallace (5) , Kimberly Ward-Duong (35, 19) , Sloane Wiktorowicz (38) , Schuyler Wolff (39) , Marie Ygouf (40) , Colin Norman (1, 6)
1 Department of Physics and Astronomy [Baltimore]
2 Department of Mathematics and Statistics [Baltimore]
3 Caltech Department of Astronomy [Pasadena]
4 LAM - Laboratoire d'Astrophysique de Marseille
5 JPL - Jet Propulsion Laboratory
6 STSci - Space Telescope Science Institute
7 Department of Astronomy [Berkeley]
8 IPAG - Institut de Planétologie et d'Astrophysique de Grenoble
9 Yale University [New Haven]
10 Steward Observatory
11 LLNL - Lawrence Livermore National Laboratory
12 Department of Physics and Astronomy [UCLA, Los Angeles]
13 LPL - Lunar and Planetary Laboratory [Tucson]
14 UWO - University of Western Ontario
15 Subaru Telescope
16 UND - University of Notre Dame [Indiana]
17 University of Georgia [USA]
18 iREX - Institut de Recherche sur les Exoplanètes
19 Amherst College
20 Gemini Observatory [Southern Operations Center]
21 UVIC - University of Victoria [Canada]
22 NRC - National Research Council of Canada
23 Department of Astronomy [Ann Arbor]
24 Natural Sounds and Night Skies Division
25 LSST - Large Synoptic Survey Telescope
26 SETI - Search for Extraterrestrial Intelligence Institute
27 UC San Diego - University of California [San Diego]
28 UCLA - University of California [Los Angeles]
29 KIPAC - Kavli Institute for Particle Astrophysics and Cosmology
30 Department of Physics and Astronomy [Stony Brook]
31 EPS - Department of Earth and Planetary Science [UC Berkeley]
32 American Geophysical Union [Washington]
33 LAGRANGE - Joseph Louis LAGRANGE
34 AMNH - American Museum of Natural History [New York, USA] = Musée américain d'histoire naturelle [New York, USA]
35 ASU - Arizona State University [Tempe]
36 School of Physics and Astronomy [Clayton]
37 Department of Astronomy [Ithaca]
38 Department of Astronomy and Astrophysics [UCSC Santa Cruz]
39 Leiden Observatory [Leiden]
40 IPAC - Infrared Processing and Analysis Center
Marshall Perrin
Malena Rice
Joanna Bulger
  • Fonction : Auteur
Jeffrey Chilcote
James R Graham
  • Fonction : Auteur
  • PersonId : 1000605
Johan Mazoyer
Mamadou N’diaye
Rémi Soummer
Arthur Vigan
Schuyler Wolff
Marie Ygouf

Résumé

We have obtained Hubble Space Telescope (HST) STIS and NICMOS, and Gemini/GPI scattered light images of the HD 191089 debris disk. We identify two spatial components: a ring resembling 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 the halo dust is both 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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Dates et versions

hal-02334961 , version 1 (28-10-2019)

Identifiants

Citer

Bin Ren, Elodie Choquet, Marshall Perrin, Gaspard Duchêne, John H Debes, et al.. An Exo-Kuiper Belt with An Extended Halo around HD 191089 in Scattered Light. The Astrophysical Journal, 2019, 882 (1), pp.64. ⟨10.3847/1538-4357/ab3403⟩. ⟨hal-02334961⟩
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