Multi-wavelength Investigation On New Molecular Masers Toward The Galactic Center

Xue, Ci

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https://hdl.handle.net/2142/116746 Copy

Description

Title

Multi-wavelength Investigation On New Molecular Masers Toward The Galactic Center

Author(s)

Xue, Ci

Contributor(s)

• McGuire, Brett A.
• Hunter, Todd R.
• Remijan, Anthony
• Momjian, Emmanuel
• Faure, Alexandre

Issue Date

2022-06-23

Keyword(s)

Astronomy

Abstract

At the centimeter wavelength, the single-dish observation has suggested that the Sgr B2 molecular cloud at the Galatic center hosts weak maser emission from complex molecules, including CH$_2$NH, HNCNH, and HCOOCH$_3$ (McGuire et al., 2012; Faure et al., 2014, 2018). Because molecular masers often trace specific conditions within the massive star-forming regions, finding new maser transitions and species provides critical insights into the physical structures hidden behind the thick dust. However, the lack of distribution information of these new maser species had prevented us from not only quantitatively assessing the observed spectral profiles but also constraining their pumping mechanisms. In this talk, we present a rigorous mapping study toward the galactic center to resolve the region where the complex maser emission originates. By comparing the distribution of several maser emissions, it is revealed that the new maser species have a close spatial relationship with the CH$_3$OH Class I masers. This relationship serves as observational evidence to suggest a similar collisional pumping mechanism for these maser transitions.

Publisher

International Symposium on Molecular Spectroscopy

Type of Resource

text

Language

eng

Handle URL

https://hdl.handle.net/2142/116746

DOI

https://doi.org/10.15278/isms.2022.RN07

Copyright and License Information

Copyright 2022 held by the authors

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