{"paper":{"title":"HI vs. H$\\alpha$ - Comparing the Kinematic Tracers in Modeling the Initial Conditions of the Mice","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"George C. Privon, Gregory F. Snyder, Jennifer M. Lotz, Joshua E. Barnes, S. Alireza Mortazavi","submitted_at":"2017-01-13T20:00:58Z","abstract_excerpt":"We explore the effect of using different kinematic tracers (HI and H$\\alpha$) on reconstructing the encounter parameters of the Mice major galaxy merger (NGC 4676A/B). We observed the Mice using the SparsePak Integral Field Unit (IFU) on the WIYN telescope, and compared the H$\\alpha$ velocity map with VLA HI observations. The relatively high spectral resolution of our data (R $\\approx$ 5000) allows us to resolve more than one kinematic component in the emission lines of some fibers. We separate the H$\\alpha$-[N II] emission of the star-forming regions from shocks using their [N II]/H$\\alpha$ l"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1701.03819","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":""},"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"}