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The dense galactic environments of the Milky Way

Published online by Cambridge University Press:  13 January 2020

Quang Nguyen-Luong ,
Neal Evans ,
Kee-Tae Kim ,
Hyunwoo Kang  and
DEGAMA survey
Quang Nguyen-Luong
Affiliation:
IBM Canada, 120 Bloor Street East, Toronto, ON, M4Y 1B7, Canada Korea Astronomy and Space Science Institute, Yuseoung, Daejeon 34055, Korea Visiting researcher at the Graduate School of Natural Sciences, Nagoya City University, Japan
Neal Evans
Affiliation:
Korea Astronomy and Space Science Institute, Yuseoung, Daejeon 34055, Korea Department of Astronomy, The University of Texas at Austin, 2515 Speedway, Stop C1400, Austin, TX 78712-1205, USA email: quang.nguyen@ibm.com
Kee-Tae Kim
Affiliation:
Korea Astronomy and Space Science Institute, Yuseoung, Daejeon 34055, Korea
Hyunwoo Kang
Affiliation:
Korea Astronomy and Space Science Institute, Yuseoung, Daejeon 34055, Korea
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Abstract

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Star formation takes place in the dense gas phase, and therefore a simple dense gas and star formation rate relation has been proposed. With the advent of multi-beam receivers, new observations show that the deviation from linear relations is possible. In addition, different dense gas tracers might also change significantly the measurement of dense gas mass and subsequently the relation between star formation rate and dense gas mass. We report the preliminary results the DEnse GAs in MAssive star-forming regions in the Milky Way (DEGAMA) survey that observed the dense gas toward a suite of well-characterized massive star-forming regions in the Milky Way. Using the resulting maps of HCO+ 1–0, HCN 1–0, CS 2–1, we discuss the current understanding of the dense gas phase where star formation takes place.

Keywords

stars: formationISM: cloudsISM: structureISM: evolutionGalaxy: evolution
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 14 , Symposium S345: Origins: From the Protosun to the First Steps of Life , August 2018 , pp. 34 - 38
Copyright
© International Astronomical Union 2020 

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