{"paper":{"title":"The Peculiar Debris Disk of HD 111520 as Resolved by the Gemini Planet Imager","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"Abhijith Rajan, Alexandra Z. Greenbaum, Anand Sivaramakrishnan, Benjamin Gerard, Brenda C. Matthews, Bruce Macintosh, Christian Marois, Christine Chen, David Lafreni\\`ere, David Vega, Deborah Padgett, Eric L. Nielsen, Franck Marchis, Gaspard Duch\\^ene, James R. Graham, Jason J. Wang, Jeffrey K. Chilcote, Jenny Patience, Joanna Bulger, Julian Rameau, Kate B. Follette, Kimberly Ward-Duong, Laurent Pueyo, Marshall Perrin, Maxwell A. Millar-Blanchaer, Michael P. Fitzgerald, Pascale Hibon, Patrick Ingraham, Paul Kalas, Rahul Patel, Rebecca Oppenheimer, Ren\\'e Doyon, Sasha Hinkley, Schuyler G. Wolff, S. Mark Ammons, Zachary H. Draper","submitted_at":"2016-05-09T20:36:57Z","abstract_excerpt":"Using the Gemini Planet Imager (GPI), we have resolved the circumstellar debris disk around HD 111520 at a projected range of ~30-100 AU in both total and polarized $H$-band intensity. The disk is seen edge-on at a position angle of ~165$^{\\circ}$ along the spine of emission. A slight inclination or asymmetric warping are covariant and alters the interpretation of the observed disk emission. We employ 3 point spread function (PSF) subtraction methods to reduce the stellar glare and instrumental artifacts to confirm that there is a roughly 2:1 brightness asymmetry between the NW and SE extensio"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1605.02771","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}