High-resolution Hubble Space Telescope Imaging Survey of Local Star-forming Galaxies. I. Spatially Resolved Obscured Star Formation with Hα and Paschen-β Recombination Lines
| العنوان: | High-resolution Hubble Space Telescope Imaging Survey of Local Star-forming Galaxies. I. Spatially Resolved Obscured Star Formation with Hα and Paschen-β Recombination Lines |
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| المؤلفون: | Clara Giménez-Arteaga, Gabriel B. Brammer, Danilo Marchesini, Luis Colina, Varun Bajaj, Malte Brinch, Daniela Calzetti, Daniel Lange-Vagle, Eric J. Murphy, Michele Perna, Javier Piqueras-López, Gregory F. Snyder |
| المصدر: | Giménez-Arteaga, C, Brammer, G B, Marchesini, D, Colina, L, Bajaj, V, Brinch, M, Calzetti, D, Lange-Vagle, D, Murphy, E J, Perna, M, Piqueras-López, J & Snyder, G F 2022, ' High-resolution Hubble Space Telescope Imaging Survey of Local Star-forming Galaxies. I. Spatially Resolved Obscured Star Formation with Hα and Paschen-β Recombination Lines ', The Astrophysical Journal Supplement Series, vol. 263, no. 1, 17 . https://doi.org/10.3847/1538-4365/ac958c Giménez Arteaga, C, Brammer, G, Marchesini, D, Colina, L, Bajaj, V, Brinch, M, Calzetti, D, Lange-Vagle, D, Murphy, E J, Perna, M, Piqueras-López, J & Snyder, G F 2022, ' High-resolution Hubble Space Telescope Imaging Survey of Local Star-forming Galaxies. I. Spatially Resolved Obscured Star Formation with Hα and Paschen-β Recombination Lines ', Astrophysical Journal, Supplement Series, vol. 263, no. 1, 17 . https://doi.org/10.3847/1538-4365/ac958c |
| سنة النشر: | 2022 |
| مصطلحات موضوعية: | Extragalactic astronomy, Space and Planetary Science, Interstellar medium, Star formation, Interstellar dust extinction, Astronomy and Astrophysics, Luminous infrared galaxies |
| الوصف: | We present a sample of 24 local star-forming galaxies observed with broadband and narrowband photometry from the Hubble Space Telescope (HST) that are part of the Great Observatories All-sky Luminous Infrared Galaxies Survey of local luminous and ultraluminous infrared galaxies. With narrowband filters around the emission lines Hα (and [N ii]) and Paβ, we obtain robust estimates of the dust attenuation affecting the gas in each galaxy, probing higher attenuation than can be traced by the optical Balmer decrement Hα/Hβ alone by a factor of >1 mag. We also infer the dust attenuation toward the stars via a spatially resolved spectral energy distribution fitting procedure that uses all available HST imaging filters. We use various indicators to obtain the star formation rate (SFR) per spatial bin and find that Paβ traces star-forming regions where the Hα and the optical stellar continuum are heavily obscured. The dust-corrected Paβ SFR recovers the 24 μm inferred SFR with a ratio of −0.14 ± 0.32 dex and the SFR inferred from the 8 to 1000 μm infrared luminosity at −0.04 ± 0.23 dex. Both in a spatially resolved and integrated sense, rest-frame near-infrared recombination lines can paint a more comprehensive picture of star formation across cosmic time, particularly with upcoming JWST observations of Paschen-series line emission in galaxies as early as the epoch of reionization. |
| وصف الملف: | application/pdf |
| اللغة: | English |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5065aabbfea651c9379af21b79363963 https://orbit.dtu.dk/en/publications/2063cac8-a40e-46f0-9a2e-4afd50aee7d1 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....5065aabbfea651c9379af21b79363963 |
| قاعدة البيانات: | OpenAIRE |
| الوصف غير متاح. |