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Dense gas in the Galactic central molecular zone is warm and heated by turbulence

Abstract:

The Galactic center is the closest region in which we can study star formation under extreme physical conditions like those in high-redshift galaxies. We measure the temperature of the dense gas in the central molecular zone (CMZ) and examine what drives it. We mapped the inner 300 pc of the CMZ in the temperature-sensitive J = 3-2 para-formaldehyde (p-H$_2$CO) transitions. We used the $3_{2,1} - 2_{2,0} / 3_{0,3} - 2_{0,2}$ line ratio to determine the gas temperature in $n \sim 10^4 - 10^5 $...

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Publication status:
Published
Peer review status:
Peer reviewed
Version:
Publisher's version

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Publisher copy:
10.1051/0004-6361/201526100

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Grant:
Origin and Structure of the Universe
Publisher:
EDP Sciences Publisher's website
Journal:
Astronomy and Astrophysics Journal website
Volume:
586
Pages:
A50
Publication date:
2016-01-26
DOI:
EISSN:
1432-0746
ISSN:
0004-6361
URN:
uuid:65281126-d6ab-427d-9ed0-87bf75aedcd8
Source identifiers:
546910
Local pid:
pubs:546910

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