The TYPHOON Stellar Population Synthesis Survey. II. Pushing Full Spectral Fitting to the Limit in the Nearby Grand Design Barred Spiral M83
We apply population synthesis techniques to analyze TYPHOON long slit spectra of the starburst barred spiral galaxy M83. The analysis covers a central square of 5′ side length. We determine the spatial distribution of dust through the analysis of reddening and extinction, together with star formatio...
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IOP Publishing
2025-01-01
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| Online Access: | https://doi.org/10.3847/1538-4357/addec2 |
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| author | Eva Sextl Rolf-Peter Kudritzki Fabio Bresolin Kathryn Grasha Hye-Jin Park Qian-Hui Chen Andrew J. Battisti Mark Seibert Barry F. Madore Jeffrey A. Rich |
| author_facet | Eva Sextl Rolf-Peter Kudritzki Fabio Bresolin Kathryn Grasha Hye-Jin Park Qian-Hui Chen Andrew J. Battisti Mark Seibert Barry F. Madore Jeffrey A. Rich |
| author_sort | Eva Sextl |
| collection | DOAJ |
| description | We apply population synthesis techniques to analyze TYPHOON long slit spectra of the starburst barred spiral galaxy M83. The analysis covers a central square of 5′ side length. We determine the spatial distribution of dust through the analysis of reddening and extinction, together with star formation rates, ages, and metallicities of young and old stellar populations. For the first time, a spatial one-to-one comparison of metallicities derived from full spectral fitting techniques with those obtained from individual young stellar probes has been carried out. The comparison with blue supergiant stars, young massive star clusters, and super star clusters shows a high degree of concordance when wavelength coverage in the B band is available. The metallicity of the young population is supersolar and does not show a radial metallicity gradient along the investigated part of the disk, in agreement with our chemical evolution model. However, a notable decrease in metallicity is observed in a tightly confined region at the galaxy center, coinciding with circumnuclear orbits. We attribute this to matter infall either from the circumgalactic medium, a dwarf galaxy interloper, or, alternatively, to active-galactic-nucleus-interrupted chemical evolution. We confirm the presence of a dust cavity with a diameter of 260 pc close to the galaxy center. Dust absorption and molecular CO emission are spatially well correlated. We find an anticorrelation between R _V , the ratio of dust attenuation to reddening, and the emission strength of molecular species present in photodissociation regions. We confirm our results by using alternative fitting algorithms and stellar libraries. |
| format | Article |
| id | doaj-art-2da949e3878d4e33950409b298706d4c |
| institution | Kabale University |
| issn | 1538-4357 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | The Astrophysical Journal |
| spelling | doaj-art-2da949e3878d4e33950409b298706d4c2025-08-20T03:28:48ZengIOP PublishingThe Astrophysical Journal1538-43572025-01-01987213810.3847/1538-4357/addec2The TYPHOON Stellar Population Synthesis Survey. II. Pushing Full Spectral Fitting to the Limit in the Nearby Grand Design Barred Spiral M83Eva Sextl0https://orcid.org/0009-0001-5618-4326Rolf-Peter Kudritzki1Fabio Bresolin2https://orcid.org/0000-0002-5068-9833Kathryn Grasha3https://orcid.org/0000-0002-3247-5321Hye-Jin Park4https://orcid.org/0000-0002-9809-6631Qian-Hui Chen5https://orcid.org/0000-0002-4382-1090Andrew J. Battisti6https://orcid.org/0000-0003-4569-2285Mark Seibert7https://orcid.org/0000-0002-1143-5515Barry F. Madore8https://orcid.org/0000-0002-1576-1676Jeffrey A. Rich9https://orcid.org/0000-0002-5807-5078Universitäts-Sternwarte , Fakultät für Physik, Ludwig-Maximilians Universität München, Scheinerstr. 1, 81679 München, Germany ; sextl@usm.lmu.deUniversitäts-Sternwarte , Fakultät für Physik, Ludwig-Maximilians Universität München, Scheinerstr. 1, 81679 München, Germany ; sextl@usm.lmu.de; Institute for Astronomy, University of Hawaii at Manoa , 2680 Woodlawn Drive, Honolulu, HI 96822, USAInstitute for Astronomy, University of Hawaii at Manoa , 2680 Woodlawn Drive, Honolulu, HI 96822, USAResearch School of Astronomy and Astrophysics, Australian National University , Canberra, ACT 2611, Australia; ARC Centre of Excellence for All Sky Astrophysics in 3 Dimensions (ASTRO 3D) , Australia; Visiting Fellow, Harvard-Smithsonian Center for Astrophysics , 60 Garden Street, Cambridge, MA 02138, USAResearch School of Astronomy and Astrophysics, Australian National University , Canberra, ACT 2611, Australia; ARC Centre of Excellence for All Sky Astrophysics in 3 Dimensions (ASTRO 3D) , AustraliaResearch School of Astronomy and Astrophysics, Australian National University , Canberra, ACT 2611, Australia; ARC Centre of Excellence for All Sky Astrophysics in 3 Dimensions (ASTRO 3D) , AustraliaResearch School of Astronomy and Astrophysics, Australian National University , Canberra, ACT 2611, Australia; ARC Centre of Excellence for All Sky Astrophysics in 3 Dimensions (ASTRO 3D) , Australia; International Centre for Radio Astronomy Research (ICRAR), University of Western Australia , M468, Crawley, WA, AustraliaThe Observatories, Carnegie Institution for Science , 813 Santa Barbara Street, Pasadena, CA 91106, USAThe Observatories, Carnegie Institution for Science , 813 Santa Barbara Street, Pasadena, CA 91106, USAThe Observatories, Carnegie Institution for Science , 813 Santa Barbara Street, Pasadena, CA 91106, USAWe apply population synthesis techniques to analyze TYPHOON long slit spectra of the starburst barred spiral galaxy M83. The analysis covers a central square of 5′ side length. We determine the spatial distribution of dust through the analysis of reddening and extinction, together with star formation rates, ages, and metallicities of young and old stellar populations. For the first time, a spatial one-to-one comparison of metallicities derived from full spectral fitting techniques with those obtained from individual young stellar probes has been carried out. The comparison with blue supergiant stars, young massive star clusters, and super star clusters shows a high degree of concordance when wavelength coverage in the B band is available. The metallicity of the young population is supersolar and does not show a radial metallicity gradient along the investigated part of the disk, in agreement with our chemical evolution model. However, a notable decrease in metallicity is observed in a tightly confined region at the galaxy center, coinciding with circumnuclear orbits. We attribute this to matter infall either from the circumgalactic medium, a dwarf galaxy interloper, or, alternatively, to active-galactic-nucleus-interrupted chemical evolution. We confirm the presence of a dust cavity with a diameter of 260 pc close to the galaxy center. Dust absorption and molecular CO emission are spatially well correlated. We find an anticorrelation between R _V , the ratio of dust attenuation to reddening, and the emission strength of molecular species present in photodissociation regions. We confirm our results by using alternative fitting algorithms and stellar libraries.https://doi.org/10.3847/1538-4357/addec2Barred spiral galaxiesStellar populationsMetallicityInterstellar dustGalaxy chemical evolution |
| spellingShingle | Eva Sextl Rolf-Peter Kudritzki Fabio Bresolin Kathryn Grasha Hye-Jin Park Qian-Hui Chen Andrew J. Battisti Mark Seibert Barry F. Madore Jeffrey A. Rich The TYPHOON Stellar Population Synthesis Survey. II. Pushing Full Spectral Fitting to the Limit in the Nearby Grand Design Barred Spiral M83 The Astrophysical Journal Barred spiral galaxies Stellar populations Metallicity Interstellar dust Galaxy chemical evolution |
| title | The TYPHOON Stellar Population Synthesis Survey. II. Pushing Full Spectral Fitting to the Limit in the Nearby Grand Design Barred Spiral M83 |
| title_full | The TYPHOON Stellar Population Synthesis Survey. II. Pushing Full Spectral Fitting to the Limit in the Nearby Grand Design Barred Spiral M83 |
| title_fullStr | The TYPHOON Stellar Population Synthesis Survey. II. Pushing Full Spectral Fitting to the Limit in the Nearby Grand Design Barred Spiral M83 |
| title_full_unstemmed | The TYPHOON Stellar Population Synthesis Survey. II. Pushing Full Spectral Fitting to the Limit in the Nearby Grand Design Barred Spiral M83 |
| title_short | The TYPHOON Stellar Population Synthesis Survey. II. Pushing Full Spectral Fitting to the Limit in the Nearby Grand Design Barred Spiral M83 |
| title_sort | typhoon stellar population synthesis survey ii pushing full spectral fitting to the limit in the nearby grand design barred spiral m83 |
| topic | Barred spiral galaxies Stellar populations Metallicity Interstellar dust Galaxy chemical evolution |
| url | https://doi.org/10.3847/1538-4357/addec2 |
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