{"paper":{"title":"First light of the VLT planet finder SPHERE. IV. Physical and chemical properties of the planets around HR8799","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"A. Baruffolo, A. Boccaletti, A. Costille, A.-L. Maire, A.-M. Lagrange, A. Pavlov, A. Roux, A. Sevin, A. Vigan, A. Zurlo, B. Salasnich, C. Dominik, C. Gry, C. Moutou, C. Soenke, D. Fantinel, D. Homeier, D. Maurel, D. Mawet, D. Mesa, D. Mouillet, D. Perret, E. Stadler, F. Allard, F. Cantalloube, F. Madec, F. Marocco, F. Vakili, F. Wildi, G. Chauvin, G. Rousset, G. Salter, H.M. Schmid, J. Baudrand, J. Charton, J.-F. Sauvage, J. H. Girard, J.L. Baudino, J.-L. Beuzit, J. Milli, K. Dohlen, L. Gluck, M. Bonnefoy, M. Carbillet, M. Feldt, M. Janson, M. Kasper, M. Langlois, M. R. Meyer, M. Turatto, O. Moeller-Nilsson, P. Feautrier, P. Gigan, P. Lucas, P. Pujet, R. Galicher, R. Gratton, R.U. Claudi, S. Desidera, S. P. Quanz, S. Rochat, S. Udry, T. Fusco, T. Henning, Y. Magnard, Z. Wahhaj","submitted_at":"2015-11-12T21:00:04Z","abstract_excerpt":"The system of four planets around HR8799 offers a unique opportunity to probe the physics and chemistry at play in the atmospheres of self-luminous young (~30 Myr) planets. We recently obtained new photometry of the four planets and low-resolution (R~30) spectra of HR8799 d and e with the SPHERE instrument (paper III). In this paper (paper IV), we compare the available spectra and photometry of the planets to known objects and atmospheric models (BT-SETTL14, Cloud-AE60, Exo-REM) to characterize the atmospheric properties of the planets. We find that HR8799d and e properties are well reproduced"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1511.04082","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"}