{"paper":{"title":"SDSS IV MaNGA: Discovery of an $H_{\\alpha}$ blob associated with a dry galaxy pair -- ejected gas or a `dark' galaxy candidate?","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Alexandre Roman-Lopes, Alex Hagen, Cheng Li, Chin-Hao Hsu, Chris Lintott, Daniel Thomas, David Law, David V. Stark, Dmitry Bizyaev, Edmond Cheung, Elena Malanushenko, Fangting Yuan, Francesco Belfiore, Hai Fu, J. G. Fern\\'andez-Trincado, Jing-Hua Lin, Joseph D. Gelfand, Kaike Pan, Karen Masters, Kevin Bundy, Lei Hao, Lihwai Lin, M. S. Bothwell, Niv Drory, Roberto Maiolino, Sebasti\\'an F. S\\'anchez, S\\'ebastien Peirani, Shan Huang, Song Huang, Stephen Gwyn, Ting Xiao, Wei-hao Wang, Wiphu Rujopakarn, Zach Pace","submitted_at":"2017-02-08T15:22:16Z","abstract_excerpt":"We report the discovery of a mysterious giant $H_{\\alpha}$ blob that is $\\sim 8$ kpc away from the main MaNGA target 1-24145, one component of a dry galaxy merger, identified in the first-year SDSS-IV MaNGA data. The size of the $H_{\\alpha}$ blob is $\\sim$ 3-4 kpc in radius, and the $H_{\\alpha}$ distribution is centrally concentrated. However, there is no optical continuum counterpart in deep broadband images reaching $\\sim$26.9 mag arcsec$^{-2}$ in surface brightness. We estimate that the masses of ionized and cold gases are $3.3 \\times 10^{5}$ $\\rm M_{\\odot}$ and $< 1.3 \\times 10^{9}$ $\\rm M"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1702.02464","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"}