University of Illinois Urbana-Champaign

Molecular discovery across the ALMA bands: From salty disks to complex molecules at 900 GHz

McGuire, Brett A.

Content Files
1362304.pdf
3712.pdf

Permalink

https://hdl.handle.net/2142/104564

Description

Title
Molecular discovery across the ALMA bands: From salty disks to complex molecules at 900 GHz
Author(s)
McGuire, Brett A.
Issue Date
2019-06-18
Keyword(s)
Astrochemistry and astrobiology in the age of Atacama Large Millimeter/submillimeter Array (ALMA)
Date of Ingest
  • 2019-07-15T22:17:12Z
  • 2020-01-25T19:32:02Z
Abstract
The Atacama Large Millimeter/sub-millimeter Array (ALMA) provides a view of our molecular universe with unprecedented sensitivity and resolution over more than 850 GHz in bandwidth from 84 -- 950 GHz. In this talk, I will cover three recent results that showcase not only ALMA's power to probe interstellar chemical evolution, but also the critical role of laboratory molecular spectroscopy efforts in interpreting ALMA observations. At lower frequencies, I will discuss our recent detections of the extraordinarily vibrationally excited inorganic salts NaCl and KCl in the disk of Orion Src I, which may prove to be a unique, and much needed, probe of embedded disks around high-mass protostars. Moving up both in frequency and complexity, I will highlight our detection of methoxymethanol (\chem{CH_3OCH_2OH}) in the high-mass star-forming region NGC 6334I in very high abundance that was directly enabled by complementary laboratory spectroscopy work. Finally, I will discuss the first broadband line survey conducted with ALMA at Bands 9 and 10, again toward NGC 6334I. I will comment on not only the power and quality of high-frequency observations with ALMA but also the need for renewed laboratory efforts at these frequencies, as highlighted by glycolaldehyde (\chem{HC(O)CH_2OH}) and ethylene glycol (\chem{(CH_2OH)_2}).
Publisher
International Symposium on Molecular Spectroscopy
Type of Resource
text
Genre of Resource
Conference Paper / Presentation
Language
eng
Permalink
http://hdl.handle.net/2142/104564
DOI
https://doi.org/10.15278/isms.2019.TG01
Copyright and License Information
Copyright 2019 Brett A. McGuire

Owning Collections

Abstracts & Presentations - 2019 International Symposium on Molecular Spectroscopy PRIMARY