{"paper":{"title":"Constraining the Nature of the PDS 70 Protoplanets with VLTI/GRAVITY","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.EP","authors_text":"A. Amorim, A. Boccaletti, A. Bohn, A. Cridland, A. Drescher, A. Eckart, A. Jim\\'enez-Rosales, A.-L. Maire, A. M\\'erand, A.-M. Lagrange, A. M\\\"uller, A. Vigan, B. Charnay, C. Paladini, C. Straubmeier, D. Lutz, D. Mouillet, E. Choquet, E. F. van Dishoeck, E. Gendron, E. Nasedkin, E. Sturm, E. Wieprecht, E. Wiezorrek, F. Cantalloube, F. Eisenhauer, F. Gao, F. M\\'enard, F. Vincent, F. Widmann, G. Chauvin, G. Duvert, G. Hei{\\ss}el, G. Perrin, G. P. P. L. Otten, G. Rodr\\'iguez-Coira, G. Rousset, H. Beust, H. Bonnet, J.-B. Le Bouquin, J. Dexter, J.D. Monnier, J. Girard, J. J. Wang, J. Kammerer, J.-L. Beuzit, J.P. Berger, J. Rameau, J. Shangguan, J. Stadler, J. Woillez, K. Perraut, K. Ward-Duong, L. Jocou, L. J. Tacconi, L. Kreidberg, L. Pueyo, L. Rodet, M. Baubck, M. Benisty, M. Bonnefoy, M. Horrobin, M. Houll\\'e, M. Keppler, M. Meyer, M. Nowak, O. Pfuhl, O. Straub, P. Caselli, P. Gao, P. Garcia, P. Kervella, P. L\\'ena, P. Molli\\`ere, P. T. de Zeeuw, R. Abuter, R. Asensio-Torres, R. Dembet, R. Garcia Lopez, R. Genzel, R. J. De Rosa, S. Blunt, S. D. von Fellenberg, S. Facchini, S. Gillessen, S. Ginzburg, S. Hinkley, S. Hippler, S. Lacour, S. Scheithauer, T. Gardner, the GRAVITY collaboration, T. Henning, T. Ott, T. Paumard, T. Shimizu, T. Stolker, V. Christiaens, V. Coud\\'e du Foresto, V. Lapeyr\\`ere, W. Brandner, X. Haubois, Y. Cl\\'enet, Z. Hubert","submitted_at":"2021-01-11T20:54:54Z","abstract_excerpt":"We present K-band interferometric observations of the PDS 70 protoplanets along with their host star using VLTI/GRAVITY. We obtained K-band spectra and 100 $\\mu$as precision astrometry of both PDS 70 b and c in two epochs, as well as spatially resolving the hot inner disk around the star. Rejecting unstable orbits, we found a nonzero eccentricity for PDS 70 b of $0.17 \\pm 0.06$, a near-circular orbit for PDS 70 c, and an orbital configuration that is consistent with the planets migrating into a 2:1 mean motion resonance. Enforcing dynamical stability, we obtained a 95% upper limit on the mass "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2101.04187","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2101.04187/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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"}