{"paper":{"title":"Giant H$\\alpha$ nebula surrounding the starburst merger NGC 6240","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Hisashi Tanaka, Masafumi Yagi, Michitoshi Yoshida, Nobunari Kashikawa, Sadanori Okamura, Youichi Ohyama, Yutaka Komiyama","submitted_at":"2015-12-31T03:53:42Z","abstract_excerpt":"We revealed the detailed structure of a vastly extended H$\\alpha$-emitting nebula (\"H$\\alpha$ nebula\") surrounding the starburst/merging galaxy NGC 6240 by deep narrow-band imaging observations with the Subaru Suprime-Cam. The extent of the nebula is $\\sim$90 kpc in diameter and the total H$\\alpha$ luminosity amounts to $\\approx 1.6 \\times 10^{42}$ erg s$^{-1}$. The volume filling factor and the mass of the warm ionized gas are $\\sim$10$^{-4}$--10$^{-5}$ and $\\sim$$5 \\times 10^8$ $M_\\odot$, respectively. The nebula has a complicated structure, which includes numerous filaments, loops, bubbles,"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1512.09208","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"}