| DOI | Resolve DOI: https://doi.org/10.3847/2041-8205/818/1/L15 |
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| Author | Search for: Wolff, Schuyler G.; Search for: Perrin, Marshall; Search for: Millar-Blanchaer, Maxwell A.; Search for: Nielsen, Eric L.; Search for: Wang, Jason; Search for: Cardwell, Andrew; Search for: Chilcote, Jeffrey; Search for: Dong, Ruobing; Search for: Draper, Zachary H.1; Search for: Duchěne, Gaspard; Search for: Fitzgerald, Michael P.; Search for: Goodsell, Stephen J.; Search for: Grady, Carol A.; Search for: Graham, James R.; Search for: Greenbaum, Alexandra Z.; Search for: Hartung, Markus; Search for: Hibon, Pascale; Search for: Hines, Dean C.; Search for: Hung, Li-Wei; Search for: Kalas, Paul; Search for: Macintosh, Bruce; Search for: Marchis, F.; Search for: Marois, Christian1; Search for: Pueyo, Laurent; Search for: Rantakyrö, Fredrik T.; Search for: Schneider, Glenn; Search for: Sivaramakrishnan, Anand; Search for: Wiktorowicz, Sloane J. |
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| Affiliation | - National Research Council of Canada. National Science Infrastructure
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| Format | Text, Article |
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| Abstract | We present H- and K-band imaging polarimetry for the PDS 66 circumstellar disk obtained during the commissioning of the Gemini Planet Imager (GPI). Polarization images reveal a clear detection of the disk in to the 0.″12 inner working angle (IWA) in the H band, almost three times closer to the star than the previous Hubble Space Telescope (HST) observations with NICMOS and STIS (0.″35 effective IWA). The centro-symmetric polarization vectors confirm that the bright inner disk detection is due to circumstellar scattered light. A more diffuse disk extends to a bright outer ring centered at 80 AU. We discuss several physical mechanisms capable of producing the observed ring + gap structure. GPI data confirm enhanced scattering on the east side of the disk that is inferred to be nearer to us. We also detect a lateral asymmetry in the south possibly due to shadowing from material within the IWA. This likely corresponds to a temporally variable azimuthal asymmetry observed in HST/STIS coronagraphic imaging. |
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| Publication date | 2016-02-08 |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| NPARC number | 21277507 |
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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 | ec0a24de-45b2-4c21-a731-02ce1cb818b6 |
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| Record created | 2016-03-09 |
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| Record modified | 2020-03-16 |
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