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Paper: ASTE and APEX CO(J = 3 → 2) Detection in the Southern Interacting Pair NGC1326A–B
Volume: 395, Frontiers of Astrophysics: A Celebration of NRAO's 50th Anniversary
Page: 365
Authors: Cortés, J.R.; Cortés, P.C.; Hardy, E.
Abstract: We present CO(J = 3 → 2) emission observations toward the Fornax Cluster interacting-galaxy pair NGC1326A-B using the Atacama Submillimeter Telescope Experiment (ASTE), and the Atacama Pathfinder EXperiment (APEX) as part of an ongoing survey of Fornax interacting galaxies. These results show that NGC1326A displays 17 mK emission for the inner 2 kpc. NGC1326B displays a strong emission of 0.2 K along its disk with a secondary component of 60 mK at an intermediate velocity between NGC 1326A and NGC1326B, suggesting the idea that gas, which originally belonged to NGC1326A, is falling onto NGC1326B. The observed kinematics in NGC1326B shows no apparent gas rotation, which might suggest that the observed gas component has been recently disturbed, and is also consistent with a recent collision between the galaxies. The strong CO(J = 3 → 2) emission detected suggests ongoing active star formation, and shows the feasibility of using CO(J = 3 → 2) to study warm gas in this kind of interacting system.
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