The Resolved Behavior of Dust Mass, Polycyclic Aromatic Hydrocarbon Fraction, and Radiation Field in ∼800 Nearby Galaxies
We present resolved 3.6–250 μ m dust spectral energy distribution (SED) fitting for ∼800 nearby galaxies. We measure the distribution of radiation field intensities heating the dust, the dust mass surface density (Σ _d ), and the fraction of dust in the form of polycyclic aromatic hydrocarbons (PAHs...
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| Language: | English |
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IOP Publishing
2024-01-01
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| Series: | The Astrophysical Journal Supplement Series |
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| Online Access: | https://doi.org/10.3847/1538-4365/ad8a5c |
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| author | Jérémy Chastenet Karin Sandstrom Adam K. Leroy Caroline Bot I-Da Chiang Ryan Chown Karl D. Gordon Eric W. Koch Hélène Roussel Jessica Sutter Thomas G. Williams |
| author_facet | Jérémy Chastenet Karin Sandstrom Adam K. Leroy Caroline Bot I-Da Chiang Ryan Chown Karl D. Gordon Eric W. Koch Hélène Roussel Jessica Sutter Thomas G. Williams |
| author_sort | Jérémy Chastenet |
| collection | DOAJ |
| description | We present resolved 3.6–250 μ m dust spectral energy distribution (SED) fitting for ∼800 nearby galaxies. We measure the distribution of radiation field intensities heating the dust, the dust mass surface density (Σ _d ), and the fraction of dust in the form of polycyclic aromatic hydrocarbons (PAHs; q _PAH ). We find that the average interstellar radiation field ( $\overline{U}$ ) is correlated both with stellar mass surface density (Σ _⋆ ) and star formation rate surface density (Σ _SFR ), while more intense radiation fields are only correlated with Σ _SFR . We show that q _PAH is a steeply decreasing function of Σ _SFR , likely reflecting PAH destruction in H ii regions. Galaxy-integrated q _PAH is strongly, negatively correlated with specific star formation rate (sSFR) and offset from the star-forming “main sequence” (ΔMS), suggesting that both metallicity and star formation intensity play a role in setting the global q _PAH . We also find a nearly constant M _d / M _* ratio for galaxies on the main sequence, with a lower ratio for more quiescent galaxies, likely due to their lower gas fractions. From these results, we construct prescriptions to estimate the radiation field distribution in both integrated and resolved galaxies. We test these prescriptions by comparing our predicted $\overline{U}$ to results of SED fitting for stacked “main-sequence” galaxies at 0 < z < 4 from M. Béthermin et al. and find sSFR is an accurate predictor of $\overline{U}$ even at these high redshifts. Finally, we describe the public delivery of matched-resolution Wide-field Infrared Survey Explorer and Herschel maps along with the resolved dust SED-fitting results through the Infrared Science Archive. |
| format | Article |
| id | doaj-art-582659e741e64aeb8ad0b821ba1b7265 |
| institution | Kabale University |
| issn | 0067-0049 |
| language | English |
| publishDate | 2024-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | The Astrophysical Journal Supplement Series |
| spelling | doaj-art-582659e741e64aeb8ad0b821ba1b72652024-12-23T10:32:40ZengIOP PublishingThe Astrophysical Journal Supplement Series0067-00492024-01-012761210.3847/1538-4365/ad8a5cThe Resolved Behavior of Dust Mass, Polycyclic Aromatic Hydrocarbon Fraction, and Radiation Field in ∼800 Nearby GalaxiesJérémy Chastenet0https://orcid.org/0000-0002-5235-5589Karin Sandstrom1https://orcid.org/0000-0002-4378-8534Adam K. Leroy2https://orcid.org/0000-0002-2545-1700Caroline Bot3https://orcid.org/0000-0001-6118-2985I-Da Chiang4https://orcid.org/0000-0003-2551-7148Ryan Chown5https://orcid.org/0000-0001-8241-7704Karl D. Gordon6https://orcid.org/0000-0001-5340-6774Eric W. Koch7https://orcid.org/0000-0001-9605-780XHélène Roussel8Jessica Sutter9https://orcid.org/0000-0002-9183-8102Thomas G. Williams10https://orcid.org/0000-0002-0012-2142Sterrenkundig Observatorium, Universiteit Gent , Krijgslaan 281 S9, B-9000 Gent, Belgium ; jeremy.chastenet@ugent.beDepartment of Astronomy & Astrophysics, University of California , San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USADepartment of Astronomy, The Ohio State University , 4055 McPherson Laboratory, 140 West 18th Avenue, Columbus, OH 43210, USAObservatoire Astronomique de Strasbourg, Université de Strasbourg , UMR 7550, 11 rue de l’Université, F-67000 Strasbourg, FranceInstitute of Astronomy and Astrophysics , Academia Sinica, No. 1, Sec. 4, Roosevelt Road, Taipei 106216, TaiwanDepartment of Astronomy, The Ohio State University , 140 West 18th Avenue, Columbus, OH 43210, USASterrenkundig Observatorium, Universiteit Gent , Krijgslaan 281 S9, B-9000 Gent, Belgium ; jeremy.chastenet@ugent.be; Space Telescope Science Institute , 3700 San Martin Drive, Baltimore, MD 21218, USACenter for Astrophysics—Harvard & Smithsonian , 60 Garden Street, Cambridge, MA 02138, USASorbonne Université, Institut d’Astrophysique de Paris , CNRS (UMR7095), 75014 Paris, FranceWhitman College , 345 Boyer Avenue, Walla Walla, WA 99362, USASubdepartment of Astrophysics, Department of Physics, University of Oxford , Keble Road, Oxford OX1 3RH, UKWe present resolved 3.6–250 μ m dust spectral energy distribution (SED) fitting for ∼800 nearby galaxies. We measure the distribution of radiation field intensities heating the dust, the dust mass surface density (Σ _d ), and the fraction of dust in the form of polycyclic aromatic hydrocarbons (PAHs; q _PAH ). We find that the average interstellar radiation field ( $\overline{U}$ ) is correlated both with stellar mass surface density (Σ _⋆ ) and star formation rate surface density (Σ _SFR ), while more intense radiation fields are only correlated with Σ _SFR . We show that q _PAH is a steeply decreasing function of Σ _SFR , likely reflecting PAH destruction in H ii regions. Galaxy-integrated q _PAH is strongly, negatively correlated with specific star formation rate (sSFR) and offset from the star-forming “main sequence” (ΔMS), suggesting that both metallicity and star formation intensity play a role in setting the global q _PAH . We also find a nearly constant M _d / M _* ratio for galaxies on the main sequence, with a lower ratio for more quiescent galaxies, likely due to their lower gas fractions. From these results, we construct prescriptions to estimate the radiation field distribution in both integrated and resolved galaxies. We test these prescriptions by comparing our predicted $\overline{U}$ to results of SED fitting for stacked “main-sequence” galaxies at 0 < z < 4 from M. Béthermin et al. and find sSFR is an accurate predictor of $\overline{U}$ even at these high redshifts. Finally, we describe the public delivery of matched-resolution Wide-field Infrared Survey Explorer and Herschel maps along with the resolved dust SED-fitting results through the Infrared Science Archive.https://doi.org/10.3847/1538-4365/ad8a5cInterstellar dustPolycyclic aromatic hydrocarbonsInfrared photometry |
| spellingShingle | Jérémy Chastenet Karin Sandstrom Adam K. Leroy Caroline Bot I-Da Chiang Ryan Chown Karl D. Gordon Eric W. Koch Hélène Roussel Jessica Sutter Thomas G. Williams The Resolved Behavior of Dust Mass, Polycyclic Aromatic Hydrocarbon Fraction, and Radiation Field in ∼800 Nearby Galaxies The Astrophysical Journal Supplement Series Interstellar dust Polycyclic aromatic hydrocarbons Infrared photometry |
| title | The Resolved Behavior of Dust Mass, Polycyclic Aromatic Hydrocarbon Fraction, and Radiation Field in ∼800 Nearby Galaxies |
| title_full | The Resolved Behavior of Dust Mass, Polycyclic Aromatic Hydrocarbon Fraction, and Radiation Field in ∼800 Nearby Galaxies |
| title_fullStr | The Resolved Behavior of Dust Mass, Polycyclic Aromatic Hydrocarbon Fraction, and Radiation Field in ∼800 Nearby Galaxies |
| title_full_unstemmed | The Resolved Behavior of Dust Mass, Polycyclic Aromatic Hydrocarbon Fraction, and Radiation Field in ∼800 Nearby Galaxies |
| title_short | The Resolved Behavior of Dust Mass, Polycyclic Aromatic Hydrocarbon Fraction, and Radiation Field in ∼800 Nearby Galaxies |
| title_sort | resolved behavior of dust mass polycyclic aromatic hydrocarbon fraction and radiation field in ∼800 nearby galaxies |
| topic | Interstellar dust Polycyclic aromatic hydrocarbons Infrared photometry |
| url | https://doi.org/10.3847/1538-4365/ad8a5c |
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