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SWAG: The Maps

Published online by Cambridge University Press:  09 June 2023

Jürgen Ott Open the ORCID record for Jürgen Ott [Opens in a new window] ,
David S. Meier ,
Tierra Candelaria  and
Dylan Ward
Jürgen Ott
Affiliation:
National Radio Astronomy Observatory 1003 Lopezville Road, Socorro, NM 87801, USA email: jott@nrao.edu
David S. Meier
Affiliation:
National Radio Astronomy Observatory 1003 Lopezville Road, Socorro, NM 87801, USA email: jott@nrao.edu New Mexico Institute of Mining and Technology 801 Leroy Place, Socorro, NM 87801, USA email: David.Meier@nmt.edu, tierra.candelaria@student.nmt.edu, dylan.ward@student.nmt.edu
Tierra Candelaria
Affiliation:
National Radio Astronomy Observatory 1003 Lopezville Road, Socorro, NM 87801, USA email: jott@nrao.edu New Mexico Institute of Mining and Technology 801 Leroy Place, Socorro, NM 87801, USA email: David.Meier@nmt.edu, tierra.candelaria@student.nmt.edu, dylan.ward@student.nmt.edu
Dylan Ward
Affiliation:
National Radio Astronomy Observatory 1003 Lopezville Road, Socorro, NM 87801, USA email: jott@nrao.edu New Mexico Institute of Mining and Technology 801 Leroy Place, Socorro, NM 87801, USA email: David.Meier@nmt.edu, tierra.candelaria@student.nmt.edu, dylan.ward@student.nmt.edu
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Abstract

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We present maps of the “Survey of Water and Ammonia toward the Galactic center” (SWAG). SWAG was observed over three years (∼550 h) with the Australia Telescope Compact Array (ATCA) and covers the entire Central Molecular Zone (CMZ) at about 26” or ∼1 pc resolution. The observed 21.2–25.6 GHz range contains tens of spectral lines and 4 GHz of continuum. Here, we present some final maps. These include multiple NH3 lines, radio recombination lines, shock tracers like HNCO and methanol (CH3OH), high resolution 22 GHz water masers, and a continuum map. The maps are the foundation for ongoing comprehensive temperature mapping of the CMZ, including the identification of heating mechanisms, the characterization of water maser sources as young stellar objects or AGB stars, as well as chemistry, dynamics, and star formation studies of the ISM in this unique environment.

Keywords

Galaxy: centerradio lines: ISMISM: moleculesmasers
Type
Poster Paper
Information
Proceedings of the International Astronomical Union , Volume 17 , Symposium S373: Resolving the Rise and Fall of Star Formation in Galaxies (Aug 2022) , August 2021 , pp. 52 - 55
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Copyright
© The Author(s), 2023. Published by Cambridge University Press on behalf of International Astronomical Union

References

Krieger, N. et al. 2017, ApJ, 850, 77 10.3847/1538-4357/aa951cCrossRefGoogle Scholar
Ott, J., Meier, D. S., Ginsburg, A., et al. 2019, IAU Symposium, 343, 48510.1017/S1743921318007810CrossRefGoogle Scholar