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Title: OBSERVATIONS OF WARM CARBON CHAIN CHEMISTRY IN NGC 3576

We report observations of warm carbon chain chemistry (WCCC) in NGC 3576, including high angular resolution imaging of an ionization source candidate and the first detection of C{sub 5}H in a massive star-forming region. In order to investigate the environment associated with birthline emergence, we ask how observed chemical conditions relate to Class 0/1 core differentiation: a systemic shift in peak position between species correlates with giant molecular cloud core gradients in turbulence and age. Emission in several molecular lines including HC{sub 3}N (11-10), NH{sub 3} (1, 1), and C{sub 5}H supports the G291.3-0.7 ionization front—transitional pre-main-sequence core interaction regulating the WCCC environment.
Authors:
 [1] ;  [2] ;  [3]
  1. School of Physics, University of New South Wales, Sydney, NSW 2052 (Australia)
  2. Faculty of Computing, Engineering and Mathematics, University of Western Sydney, Locked Bag 1797, Penrith South DC, NSW 1797 (Australia)
  3. Institute for Astronomy, University of Sydney, Sydney, NSW 2006 (Australia)
Publication Date:
OSTI Identifier:
22364721
Resource Type:
Journal Article
Resource Relation:
Journal Name: Astrophysical Journal; Journal Volume: 798; Journal Issue: 1; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; CARBON; COSMOCHEMISTRY; IONIZATION; MAIN SEQUENCE STARS; NITRILES; PROTOSTARS; RESOLUTION; STAR CLUSTERS; STAR EVOLUTION; TURBULENCE