Radio-only and radio-to-far-ultraviolet spectral energy distribution modeling of 14 ULIRGs : insights into the global properties of infrared bright galaxies

2024
journal article
article
dc.abstract.enWe present detailed spectral energy distribution (SED) modeling of 14 local ultraluminous infrared galaxies (ULIRGs) with outstanding photometric data from the literature covering the ultraviolet–infrared (FIR) and radio bands (∼50 MHz to ∼30 GHz). We employ the CIGALE SED fitting code to model the ultraviolet–FIR–radio SED. For the radio-only SED modeling, we use the UltraNest package, leveraging its nested sampling algorithm. Combining the results from our previous study on 11 luminous infrared galaxies (LIRGs), we discuss the global astrophysical properties of a sample of 25 starburst galaxies (z < 0.5). Their radio spectra are frequently characterized by bends and turnovers, with no indication of ULIRGs exhibiting more complicated SEDs than LIRGs despite showing more signs of interactions. Including radio measurements in the CIGALE modeling constrained the dust luminosity and star formation rate (SFR) estimates by more than 1 order of magnitude better than previously reported for starburst galaxies. We show that total and nonthermal radio luminosity at 1.4 and 4.8 GHz frequencies can be good estimators of recent SFRs for all LIRGs and those ULIRGS with an insignificant influence of active galactic nuclei. A weaker but still significant correlation is observed between radio SFRs at 1.4 GHz and old (averaged over 100 Myr) SFRs based on SED modeling, indicative of multiple episodes of starburst activity during their lifetime. The thermal radio luminosity at 4.8 GHz is a better tracer of recent star formation than the thermal luminosity at 1.4 GHz. Statistically, our modeled nonthermal radio spectral indices do not significantly correlate with redshift, stellar mass, SFR, specific SFR, and dust mass.
dc.affiliationWydział Fizyki, Astronomii i Informatyki Stosowanej
dc.affiliationWydział Fizyki, Astronomii i Informatyki Stosowanej : Instytut – Obserwatorium Astronomiczne
dc.contributor.authorDey, Subhrata - 383663
dc.contributor.authorGoyal, Arti - 348612
dc.contributor.authorMałek, Katarzyna
dc.contributor.authorDíaz-Santos, Tanio
dc.date.accessioned2024-05-15T11:27:02Z
dc.date.available2024-05-15T11:27:02Z
dc.date.issued2024
dc.date.openaccess0
dc.description.accesstimew momencie opublikowania
dc.description.number1
dc.description.versionostateczna wersja wydawcy
dc.description.volume966
dc.identifier.articleid61
dc.identifier.doi10.3847/1538-4357/ad2c93
dc.identifier.eissn1538-4357
dc.identifier.issn0004-637X
dc.identifier.urihttps://ruj.uj.edu.pl/handle/item/339975
dc.languageeng
dc.language.containereng
dc.rightsUdzielam licencji. Uznanie autorstwa 4.0 Międzynarodowa
dc.rights.licenceCC-BY
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/legalcode.pl
dc.share.typeotwarte czasopismo
dc.subject.enradio continuum emission
dc.subject.enultraluminous infrared galaxies
dc.subject.enspectral energy distribution
dc.subject.engalaxy photometry
dc.subject.eninterstellar medium
dc.subtypeArticle
dc.titleRadio-only and radio-to-far-ultraviolet spectral energy distribution modeling of 14 ULIRGs : insights into the global properties of infrared bright galaxies
dc.title.journalAstrophysical Journal
dc.typeJournalArticle
dspace.entity.typePublicationen
dc.abstract.en
We present detailed spectral energy distribution (SED) modeling of 14 local ultraluminous infrared galaxies (ULIRGs) with outstanding photometric data from the literature covering the ultraviolet–infrared (FIR) and radio bands (∼50 MHz to ∼30 GHz). We employ the CIGALE SED fitting code to model the ultraviolet–FIR–radio SED. For the radio-only SED modeling, we use the UltraNest package, leveraging its nested sampling algorithm. Combining the results from our previous study on 11 luminous infrared galaxies (LIRGs), we discuss the global astrophysical properties of a sample of 25 starburst galaxies (z < 0.5). Their radio spectra are frequently characterized by bends and turnovers, with no indication of ULIRGs exhibiting more complicated SEDs than LIRGs despite showing more signs of interactions. Including radio measurements in the CIGALE modeling constrained the dust luminosity and star formation rate (SFR) estimates by more than 1 order of magnitude better than previously reported for starburst galaxies. We show that total and nonthermal radio luminosity at 1.4 and 4.8 GHz frequencies can be good estimators of recent SFRs for all LIRGs and those ULIRGS with an insignificant influence of active galactic nuclei. A weaker but still significant correlation is observed between radio SFRs at 1.4 GHz and old (averaged over 100 Myr) SFRs based on SED modeling, indicative of multiple episodes of starburst activity during their lifetime. The thermal radio luminosity at 4.8 GHz is a better tracer of recent star formation than the thermal luminosity at 1.4 GHz. Statistically, our modeled nonthermal radio spectral indices do not significantly correlate with redshift, stellar mass, SFR, specific SFR, and dust mass.
dc.affiliation
Wydział Fizyki, Astronomii i Informatyki Stosowanej
dc.affiliation
Wydział Fizyki, Astronomii i Informatyki Stosowanej : Instytut – Obserwatorium Astronomiczne
dc.contributor.author
Dey, Subhrata - 383663
dc.contributor.author
Goyal, Arti - 348612
dc.contributor.author
Małek, Katarzyna
dc.contributor.author
Díaz-Santos, Tanio
dc.date.accessioned
2024-05-15T11:27:02Z
dc.date.available
2024-05-15T11:27:02Z
dc.date.issued
2024
dc.date.openaccess
0
dc.description.accesstime
w momencie opublikowania
dc.description.number
1
dc.description.version
ostateczna wersja wydawcy
dc.description.volume
966
dc.identifier.articleid
61
dc.identifier.doi
10.3847/1538-4357/ad2c93
dc.identifier.eissn
1538-4357
dc.identifier.issn
0004-637X
dc.identifier.uri
https://ruj.uj.edu.pl/handle/item/339975
dc.language
eng
dc.language.container
eng
dc.rights
Udzielam licencji. Uznanie autorstwa 4.0 Międzynarodowa
dc.rights.licence
CC-BY
dc.rights.uri
http://creativecommons.org/licenses/by/4.0/legalcode.pl
dc.share.type
otwarte czasopismo
dc.subject.en
radio continuum emission
dc.subject.en
ultraluminous infrared galaxies
dc.subject.en
spectral energy distribution
dc.subject.en
galaxy photometry
dc.subject.en
interstellar medium
dc.subtype
Article
dc.title
Radio-only and radio-to-far-ultraviolet spectral energy distribution modeling of 14 ULIRGs : insights into the global properties of infrared bright galaxies
dc.title.journal
Astrophysical Journal
dc.type
JournalArticle
dspace.entity.typeen
Publication

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