{"about":{"site":"https://codewithpapers.app","non_affiliation":"Code with Papers and Syntology are not affiliated with, endorsed by, or sponsored by Papers with Code, Meta, or the pwc-archive mirror.","licence":"CC BY-SA 4.0","licence_url":"https://creativecommons.org/licenses/by-sa/4.0/legalcode","attribution":"https://codewithpapers.app/attribution","modified":"archive material modified by Syntology; see the attribution page"},"url":"/paper/high-resolution-hst-imaging-survey-of-local","title":"High Resolution HST Imaging Survey of Local Star-Forming Galaxies I: Spatially-Resolved Obscured Star Formation with H$α$ and Paschen-$β$ Recombination Lines","arxiv_id":"2210.00028","date":"2022-09-30","proceeding":null,"authors":["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"],"abstract":"We present a sample of 24 local star-forming galaxies observed with broad- and narrow-band photometry from the Hubble Space Telescope, that are part of the GOALS survey of local luminous and ultra-luminous infrared galaxies. With narrow-band filters around the emission lines H$\\alpha$ (and [NII]) and Pa$\\beta$, 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 H$\\alpha$/H$\\beta$ alone by a factor of $>1$ mag. We also infer the dust attenuation towards the stars via a spatially-resolved SED-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 Pa$\\beta$ traces star-forming regions where the H$\\alpha$ and the optical stellar continuum are heavily obscured. The dust-corrected Pa$\\beta$ SFR recovers the 24$\\mu$m-inferred SFR with a ratio $-0.14\\pm0.32$ dex and the SFR inferred from the $8\\mathrm{-}1000\\,\\mu\\mathrm{m}$ infrared luminosity at $-0.04\\pm0.23$ 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.","url_abs":"https://arxiv.org/abs/2210.00028v1","url_pdf":"https://arxiv.org/pdf/2210.00028v1.pdf","source":{"archive":"pwc-archive (Hugging Face), CC BY-SA 4.0","snapshot":"2025-07-28","licence_url":"https://creativecommons.org/licenses/by-sa/4.0/legalcode","row_kind":"links_only","authors_date_abstract":"arXiv metadata, CC0 1.0 (https://info.arxiv.org/help/license), from the Kaggle arXiv metadata snapshot of 2026-09-12"},"code_links":[{"paper_slug":"high-resolution-hst-imaging-survey-of-local","repo_url":"https://github.com/claragimenez/voronoi","is_official":1,"mentioned_in_paper":1,"mentioned_in_github":0,"framework":"none","reach":null}],"tasks":[],"methods":[],"datasets_introduced":[],"methods_introduced":[],"results":[],"syntology":{"syntology_url":null,"atlas_url":null,"mcp":null,"developers":"https://syntology.ai/developers"},"arxiv_metadata":null,"syntology_extracted_results":null}