{"paper":{"title":"Evidence of boosted 13CO/12CO ratio in early-type galaxies in dense environments","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"(10) AIP - Potsdam, (11) NMT), (2) U. Toledo, 3), (3) Reed, (4) Chalmers, (5) ESO - Garching, 6), (6) Hertfordshire, (7) ASTRON, (8) Oxford, (9) CEA/CNRS, Alison F. Crocker (2, Davor Krajnovic (10), Katherine Alatalo (1), Kristina Nyland (7), Lisa M. Young (11) ((1) IPAC/Caltech, Martin Bureau (8), Pierre-Alain Duc (9), Susanne Aalto (4), Timothy A. Davis (5","submitted_at":"2015-04-08T20:00:33Z","abstract_excerpt":"We present observations of $^{13}$CO(1-0) in 17 Combined Array for Research in Millimeter Astronomy (CARMA) Atlas3D early-type galaxies (ETGs), obtained simultaneously with $^{12}$CO(1-0) observations. The $^{13}$CO in six ETGs is sufficiently bright to create images. In these 6 sources, we do not detect any significant radial gradient in the $^{13}$CO/$^{12}$CO ratio between the nucleus and the outlying molecular gas. Using the $^{12}$CO channel maps as 3D masks to stack the $^{13}$CO emission, we are able to detect 15/17 galaxies to $>3\\sigma$ (and 12/17 to at least 5$\\sigma$) significance i"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1504.02095","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"}