The PHANGS-AstroSat atlas of nearby star-forming galaxies
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A90106%2F24%3A00617493" target="_blank" >RIV/67985815:90106/24:00617493 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.3847/1538-4365/ad152c" target="_blank" >https://doi.org/10.3847/1538-4365/ad152c</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3847/1538-4365/ad152c" target="_blank" >10.3847/1538-4365/ad152c</a>
Alternative languages
Result language
angličtina
Original language name
The PHANGS-AstroSat atlas of nearby star-forming galaxies
Original language description
We present the Physics at High Angular resolution in Nearby GalaxieS (PHANGS)-AstroSat atlas, which contains UV imaging of 31 nearby star-forming galaxies captured by the Ultraviolet Imaging Telescope on the AstroSat satellite. The atlas provides a homogeneous data set of far-UV and near-UV maps of galaxies within a distance of 22 Mpc and a median angular resolution of 1.'' 4 (corresponding to a physical scale between 25 and 160 pc). After subtracting a uniform UV background and accounting for Milky Way extinction, we compare our estimated flux densities to GALEX observations, finding good agreement. We find candidate extended UV disks around the galaxies NGC 6744 and IC 5332. We present the first statistical measurements of the clumping of the UV emission and compare it to the clumping of molecular gas traced with the Atacama Large Millimeter/submillimeter Array (ALMA). We find that bars and spiral arms exhibit the highest degree of clumping, and the molecular gas is even more clumped than the far-UV (FUV) emission in galaxies. We investigate the variation of the ratio of observed FUV to H alpha in different galactic environments and kiloparsec-sized apertures. We report that similar to 65% of the variation of the log10(FUV/H alpha) can be described through a combination of dust attenuation with star formation history parameters. The PHANGS-AstroSat atlas enhances the multiwavelength coverage of our sample, offering a detailed perspective on star formation. When integrated with PHANGS data sets from ALMA, the Very Large Telescope-MUSE, the Hubble Space Telescope, and JWST, it develops our comprehensive understanding of attenuation curves and dust attenuation in star-forming galaxies.
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
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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 Supplement Series
ISSN
0067-0049
e-ISSN
1538-4365
Volume of the periodical
271
Issue of the periodical within the volume
1
Country of publishing house
US - UNITED STATES
Number of pages
27
Pages from-to
2
UT code for WoS article
001161136000001
EID of the result in the Scopus database
2-s2.0-85184864988