2023/03/04 by O. S. Rojas-García, Rojas-García, O. S., Arturo I. Gómez-Ruiz +9 · 1 citation
Chemistry · Earth and Planetary Sciences · Physics and Astronomy · #Astrophysics and Star Formation Studies #Astrophysics of Galaxies (astro-ph.GA) #Atmospheric Ozone and Climate #FOS: Physical sciences #Solar and Stellar Astrophysics (astro-ph.SR) #Spectroscopy and Laser Applications
paper · pdf · doi:10.48550/arxiv.2303.02527
openalex publication_date 2023/03/04 · openalex created_date 2023/03/09 · openalex updated_date 2026/07/28
G351.16+0.70 is a relatively well-studied High Mass Star Forming Region with at least two main bipolar outflow structures originating from an OB embedded star and multiple IR cores. Using high-resolution and large bandwidth SMA observations, we studied its molecular content to probe the emission of iCOMs which could be related to the bipolar outflows or their jets. We analyzed the emission spectra in the 1mm band within 8 GHz bandwidth coverage, from 216.75 to 220.75 GHz, and from 228.75 to 232.75 GHz. Employing the LTE approximation using the XCLASS software, we identified 260 emission lines arising from iCOMs. The emission lines in the synthetic emission spectra could be explained by 11 iCOMs and 5 molecular isotopologues. Additionally, we analyzed the outstanding broad iCOM emission lines by using integrated and velocity field maps, searching for extended emission and velocity gradients related to molecular outflows. Ro-vibrational transitions of CH3OH, C2H3CN, CH3OCHO, CH3COCH3, and aGg'-(CH2OH)2 present evidence of extended emission that does not fit with spherical morphology and that follows the path of the low-velocity 13CO outflow. The multiple outflows in the system are revealed also by the CO (2-1) and SiO (5-4) emission, but in particular we have discovered a so-called extremely high velocity outflow (|VMax-VLSR|∼ 60 km s-1). Additionally, we provide the full line catalog of iCOMs along the 8 GHz bandwidth produced by the main protostellar core.