The impact of spiral arms on the star formation life cycle
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A90106%2F25%3A00646683" target="_blank" >RIV/67985815:90106/25:00646683 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1051/0004-6361/202553895" target="_blank" >https://doi.org/10.1051/0004-6361/202553895</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1051/0004-6361/202553895" target="_blank" >10.1051/0004-6361/202553895</a>
Alternative languages
Result language
angličtina
Original language name
The impact of spiral arms on the star formation life cycle
Original language description
The matter cycle between gas clouds and stars in galaxies plays a crucial role in regulating galaxy evolution through feedback mechanisms. In turn, the local and global galactic environments shape the interstellar medium and provide the initial conditions for star formation, potentially affecting the properties of this small-scale matter cycle. In particular, spiral arms have been proposed to play a pivotal role in the star formation life cycle, by enhancing the gas density and triggering star formation. However, their exact role is still debated. In this study, we investigated the role of spiral arms in the giant molecular cloud evolutionary life cycle and on the star formation process in a sample of 22 nearby spiral galaxies from the PHANGS survey. We measured the cloud lifetime, the feedback timescale, the typical distance between independent regions, and the star formation efficiency in spiral arms and inter-arm regions separately. We find that the distributions of the cloud lifetime as well as the feedback timescale are similar in both environments. This result suggests that spiral arms are unlikely to play a dominant role in triggering star formation. By contrast, the star formation efficiency appears to be slightly higher in inter-arm regions compared to spiral arms.
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
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Astronomy & Astrophysics
ISSN
0004-6361
e-ISSN
1432-0746
Volume of the periodical
698
Issue of the periodical within the volume
June
Country of publishing house
FR - FRANCE
Number of pages
12
Pages from-to
A296
UT code for WoS article
001512479700009
EID of the result in the Scopus database
2-s2.0-105008943269