{"paper":{"title":"The Viewing Geometry of Brown Dwarfs Influences Their Observed Colours and Variability Properties","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.EP"],"primary_cat":"astro-ph.SR","authors_text":"Beth A. Biller, Johanna M. Vos, Katelyn N. Allers","submitted_at":"2017-05-17T08:38:29Z","abstract_excerpt":"In this paper we study the full sample of known Spitzer [$3.6~\\mu$m] and $J$-band variable brown dwarfs. We calculate the rotational velocities, $v\\sin i$, of 16 variable brown dwarfs using archival Keck NIRSPEC data and compute the inclination angles of 19 variable brown dwarfs.\n  The results obtained show that all objects in the sample with mid-IR variability detections are inclined at an angle $>20^{\\circ}$, while all objects in the sample displaying $J$-band variability have an inclination angle $>35^{\\circ}$. $J$-band variability appears to be more affected by inclination than \\textit{Spi"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1705.06045","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"}