A New Approach For Automated Analysis Of High-resolution Molecular Line Surveys

El-Abd, Samer

Permalink

https://hdl.handle.net/2142/116577 Copy

Description

Title

A New Approach For Automated Analysis Of High-resolution Molecular Line Surveys

Author(s)

El-Abd, Samer

Contributor(s)

• Lee, Kelvin
• Hunter, Todd R.
• Brogan, Crystal L.
• McGuire, Brett A.

Issue Date

2022-06-23

Keyword(s)

Astronomy

Abstract

At a distance of 1.3 kpc, NGC 6334I is one of the nearest massive star-forming regions. Previous studies of the source have revealed a number of prodigious hot cores, each of which exhibit a rich molecular inventory. Our previous work on NGC 6334I examined spectra from a limited number of positions scattered throughout the source in order to sample the various physical conditions that can be found. In an effort to better characterize the underlying complex physical and chemical structure of this massive star-forming cluster we have conducted an automated LTE fit of the emission spectra corresponding to each of over 8000 pixels surrounding the hot cores using two ALMA Band 7 tunings with a resolution of 0.26” (340 AU). For each pixel we derive an excitation temperature as well as the column density for each of the 25 most prominent molecular species. Spatial maps of the derived properties for the molecules will be presented with a particular focus on the three C$_2$H$_4$O$_2$ isomers and how the clustered star formation appears to impact their abundances. These molecular properties will be discussed within the context of the physical structure of the protocluster.

Publisher

International Symposium on Molecular Spectroscopy

Type of Resource

text

Language

eng

Handle URL

https://hdl.handle.net/2142/116577

DOI

https://doi.org/10.15278/isms.2022.RN02

Copyright and License Information

Copyright 2022 held by the authors

Owning Collections