Abstract
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 C5H 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 HC3N (11-10), NH3 (1, 1), and C5H supports the G291.3-0.7 ionization front - transitional pre-main-sequence core interaction regulating the WCCC environment.
Original language | English |
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Article number | 36 |
Pages (from-to) | 1-9 |
Number of pages | 9 |
Journal | Astrophysical Journal |
Volume | 798 |
Issue number | 1 |
DOIs | |
Publication status | Published - 1 Jan 2015 |
Externally published | Yes |
Keywords
- Astrochemistry
- Evolution
- H II regions
- ISM: abundances
- Stars: formation
- Turbulence