Disk turbulence and star formation regulation in high-z main-sequence analog galaxies
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A90106%2F24%3A00617611" target="_blank" >RIV/67985815:90106/24:00617611 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.3847/1538-4357/ad758c" target="_blank" >https://doi.org/10.3847/1538-4357/ad758c</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3847/1538-4357/ad758c" target="_blank" >10.3847/1538-4357/ad758c</a>
Alternative languages
Result language
angličtina
Original language name
Disk turbulence and star formation regulation in high-z main-sequence analog galaxies
Original language description
The gas-phase velocity dispersions in disk galaxies, which trace turbulence in the interstellar medium, are observed to increase with lookback time. However, the mechanisms that set this rise in turbulence are observationally poorly constrained. To address this, we combine kiloparsec-scale Atacama Large Millimeter/submillimeter Array observations of CO(3-2) and CO(4-3) with Hubble Space Telescope observations of H alpha to characterize the molecular gas and star formation properties of seven local analogs of main-sequence galaxies at z similar to 1-2, drawn from the DYNAMO sample. Investigating the ''molecular gas main sequence'' on kiloparsec scales, we find that galaxies in our sample are more gas-rich than local star-forming galaxies at all disk positions. We measure beam-smearing-corrected molecular gas velocity dispersions and relate them to the molecular gas and star formation rate surface densities. Despite being relatively nearby (z similar to 0.1), DYNAMO galaxies exhibit high velocity dispersions and gas and star formation rate surface densities throughout their disks, when compared to local star-forming samples. Comparing these measurements to predictions from star formation theory, we find very good agreements with the latest feedback-regulated star formation models. However, we find that theories that combine dissipation of gravitational energy from radial gas transport with feedback overestimate the observed molecular gas velocity dispersions.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10308 - Astronomy (including astrophysics,space science)
Result continuities
Project
—
Continuities
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Others
Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Astrophysical Journal
ISSN
0004-637X
e-ISSN
1538-4357
Volume of the periodical
976
Issue of the periodical within the volume
1
Country of publishing house
GB - UNITED KINGDOM
Number of pages
18
Pages from-to
88
UT code for WoS article
001354860200001
EID of the result in the Scopus database
2-s2.0-85209392257