{"paper":{"title":"First-light LBT nulling interferometric observations: warm exozodiacal dust resolved within a few AU of eta Corvi","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.IM"],"primary_cat":"astro-ph.EP","authors_text":"A. Gaspar, A. J. Skemer, A. J. Weinberger, A. Puglisi, A. Roberge, A. Vaz, B. Mennesson, C. Beichman, C. Haniff, D. Defr\\`ere, E. C. Downey, E. Pinna, E. Serabyn, G. Brusa, G. Bryden, G. M. Kennedy, G. Rieke, J. Lebreton, J. M. Hill, J. M. Leisenring, J. R. Males, K. M. Morzinski, K. Stapeldfeldt, K. Su, L. Marion, M. C. Wyatt, M. Montoya, O. Absil, O. Durney, P. Arbo, P. Grenz, P. M. Hinz, R. Millan-Gabet, R. Sosa, S. Esposito, T. J. McMahon, V. P. Bailey, V. Vaitheeswaran, W. C. Danchi, W. F. Hoffmann","submitted_at":"2015-01-17T02:23:28Z","abstract_excerpt":"We report on the first nulling interferometric observations with the Large Binocular Telescope Interferometer (LBTI), resolving the N' band (9.81 - 12.41 um) emission around the nearby main-sequence star eta Crv (F2V, 1-2 Gyr). The measured source null depth amounts to 4.40% +/- 0.35% over a field-of-view of 140 mas in radius (~2.6\\,AU at the distance of eta Corvi) and shows no significant variation over 35{\\deg} of sky rotation. This relatively low null is unexpected given the total disk to star flux ratio measured by Spitzer/IRS (~23% across the N' band), suggesting that a significant fracti"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1501.04144","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"}