{"language":[{"iso":"eng"}],"volume":708,"file":[{"file_size":587642,"checksum":"875d217ea15192fa1208f3db34a7fad6","date_updated":"2026-10-12T07:31:23Z","file_name":"2026_AstronomyAstrophysics_Matharu.pdf","creator":"dernst","relation":"main_file","content_type":"application/pdf","file_id":"23101","access_level":"open_access","date_created":"2026-10-12T07:31:23Z","success":1}],"fulldoi":"https://doi.org/10.1051/0004-6361/202558205","oa_version":"Published Version","scopus_import":"1","citation":{"mla":"Matharu, Jasleen, et al. “A First Look at a Complete View of Spatially Resolved Star Formation at 1  &#60;  z  &#60;  1.8 with JWST NGDEEP+FRESCO Slitless Spectroscopy.” <i>Astronomy and Astrophysics</i>, vol. 708, A33, EDP Sciences, 2026, doi:<a href=\"https://doi.org/10.1051/0004-6361/202558205\">10.1051/0004-6361/202558205</a>.","apa":"Matharu, J., Shen, L., Shivaei, I., Oesch, P. A., Papovich, C., Brammer, G., … Xiao, M. (2026). A first look at a complete view of spatially resolved star formation at 1  &#60;  z  &#60;  1.8 with JWST NGDEEP+FRESCO slitless spectroscopy. <i>Astronomy and Astrophysics</i>. EDP Sciences. <a href=\"https://doi.org/10.1051/0004-6361/202558205\">https://doi.org/10.1051/0004-6361/202558205</a>","short":"J. Matharu, L. Shen, I. Shivaei, P.A. Oesch, C. Papovich, G. Brammer, N.A. Reddy, Y. Cheng, P. Van Dokkum, S.L. Finkelstein, N.P. Hathi, J.S. Kartaltepe, A.M. Koekemoer, J.J. Matthee, N. Pirzkal, S.M. Wilkins, M.A. Wozniak, M. Xiao, Astronomy and Astrophysics 708 (2026).","chicago":"Matharu, Jasleen, Lu Shen, Irene Shivaei, Pascal A. Oesch, Casey Papovich, Gabriel Brammer, Naveen A. Reddy, et al. “A First Look at a Complete View of Spatially Resolved Star Formation at 1  &#60;  z  &#60;  1.8 with JWST NGDEEP+FRESCO Slitless Spectroscopy.” <i>Astronomy and Astrophysics</i>. EDP Sciences, 2026. <a href=\"https://doi.org/10.1051/0004-6361/202558205\">https://doi.org/10.1051/0004-6361/202558205</a>.","ama":"Matharu J, Shen L, Shivaei I, et al. A first look at a complete view of spatially resolved star formation at 1  &#60;  z  &#60;  1.8 with JWST NGDEEP+FRESCO slitless spectroscopy. <i>Astronomy and Astrophysics</i>. 2026;708. doi:<a href=\"https://doi.org/10.1051/0004-6361/202558205\">10.1051/0004-6361/202558205</a>","ieee":"J. Matharu <i>et al.</i>, “A first look at a complete view of spatially resolved star formation at 1  &#60;  z  &#60;  1.8 with JWST NGDEEP+FRESCO slitless spectroscopy,” <i>Astronomy and Astrophysics</i>, vol. 708. EDP Sciences, 2026.","ista":"Matharu J, Shen L, Shivaei I, Oesch PA, Papovich C, Brammer G, Reddy NA, Cheng Y, Van Dokkum P, Finkelstein SL, Hathi NP, Kartaltepe JS, Koekemoer AM, Matthee JJ, Pirzkal N, Wilkins SM, Wozniak MA, Xiao M. 2026. A first look at a complete view of spatially resolved star formation at 1  &#60;  z  &#60;  1.8 with JWST NGDEEP+FRESCO slitless spectroscopy. Astronomy and Astrophysics. 708, A33."},"OA_place":"publisher","DOAJ_listed":"1","publisher":"EDP Sciences","year":"2026","title":"A first look at a complete view of spatially resolved star formation at 1  <  z  <  1.8 with JWST NGDEEP+FRESCO slitless spectroscopy","license":"https://creativecommons.org/licenses/by/4.0/","das_tickbox":"0","publication_status":"published","external_id":{"arxiv":["2511.15792"]},"article_number":"A33","publication":"Astronomy and Astrophysics","publication_identifier":{"issn":["0004-6361"],"eissn":["1432-0746"]},"department":[{"_id":"JoMa"}],"arxiv":1,"ddc":["520"],"doi":"10.1051/0004-6361/202558205","has_accepted_license":"1","date_created":"2026-10-04T22:01:55Z","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","_id":"23048","status":"public","supplementarymaterial":"no","article_processing_charge":"No","type":"journal_article","article_type":"original","author":[{"last_name":"Matharu","full_name":"Matharu, Jasleen","first_name":"Jasleen"},{"first_name":"Lu","last_name":"Shen","full_name":"Shen, Lu"},{"first_name":"Irene","full_name":"Shivaei, Irene","last_name":"Shivaei"},{"first_name":"Pascal A.","full_name":"Oesch, Pascal A.","last_name":"Oesch"},{"first_name":"Casey","last_name":"Papovich","full_name":"Papovich, Casey"},{"full_name":"Brammer, Gabriel","last_name":"Brammer","first_name":"Gabriel"},{"full_name":"Reddy, Naveen A.","last_name":"Reddy","first_name":"Naveen A."},{"first_name":"Yingjie","full_name":"Cheng, Yingjie","last_name":"Cheng"},{"first_name":"Pieter","full_name":"Van Dokkum, Pieter","last_name":"Van Dokkum"},{"first_name":"Steven L.","last_name":"Finkelstein","full_name":"Finkelstein, Steven L."},{"first_name":"Nimish P.","full_name":"Hathi, Nimish P.","last_name":"Hathi"},{"first_name":"Jeyhan S.","full_name":"Kartaltepe, Jeyhan S.","last_name":"Kartaltepe"},{"last_name":"Koekemoer","full_name":"Koekemoer, Anton M.","first_name":"Anton M."},{"id":"7439a258-f3c0-11ec-9501-9df22fe06720","first_name":"Jorryt J","last_name":"Matthee","orcid":"0000-0003-2871-127X","full_name":"Matthee, Jorryt J"},{"last_name":"Pirzkal","full_name":"Pirzkal, Nor","first_name":"Nor"},{"first_name":"Stephen M.","full_name":"Wilkins, Stephen M.","last_name":"Wilkins"},{"first_name":"Michael A.","last_name":"Wozniak","full_name":"Wozniak, Michael A."},{"first_name":"Mengyuan","full_name":"Xiao, Mengyuan","last_name":"Xiao"}],"researchdata_availability":"yes","OA_type":"diamond","abstract":[{"lang":"eng","text":"The previously inaccessible star formation tracer Paschen-Alpha (Paα) can now be spatially resolved by JWST NIRCam slitless spectroscopy in distant galaxies up to cosmic noon. In the first study of its kind, we combine JWST NGDEEP NIRISS and FRESCO NIRCam slitless spectroscopy to provide the first direct comparison of spatially resolved dust-obscured (traced by Paα) versus unobscured (traced by Hα) star formation across the main sequence. We stacked Paα and Hα emission-line maps, along with stellar continuum images at both wavelengths of 31 galaxies at 1 < z < 1.8 in three bins of stellar mass spanning 7.7 ≤ log(M*/M⊙) < 11. Surface brightness profiles were measured and equivalent width (EW) profiles computed. Increasing Paα and Hα EW profiles with galactocentric radius across all stellar masses probed provides direct evidence for the inside-out growth of galaxies both via dust-obscured and unobscured star formation for the first time. For galaxies predominantly on the main sequence (log(M*/M⊙)≥8.8), a weakly positive (0.1 ± 0.1) Paα/Hα line profile gradient as a function of radius is found at 8.8 ≤ log(M*/M⊙) < 9.9, with a negative (−0.4 ± 0.1) Paα/Hα line profile gradient as a function of radius found at the highest stellar masses of 9.9 ≤ log(M*/M⊙) < 11.0. Low-mass galaxies (7.7 ≤ log(M*/M⊙) < 8.8) with predominantly high specific star formation rates relative to the main sequence are also found to have a negative (−0.5 ± 0.1) Paα/Hα line profile gradient as a function of radius. Our results demonstrate that while inside-out growth via star formation is ubiquitous across the main sequence just after cosmic noon, centrally concentrated dust attenuation is not. Along with other recent work in the literature, our findings now motivate future studies of resolved SFR and dust attenuation profiles in large samples of individual cosmic noon galaxies across the main sequence, aimed at understanding the intrinsic scatter in spatially resolved star formation."}],"file_date_updated":"2026-10-12T07:31:23Z","intvolume":"       708","acknowledgement":"JM is grateful to the Max Planck Society for the MPIA Prize Fellowship and to the Cosmic Dawn Center for the DAWN Fellowship. This work is based on observations made with the NASA/ESA/CSA James Webb Space Telescope. The raw data were obtained from the Mikulski Archive for Space Telescopes at the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS 5-03127 for JWST. These observations are associated with JWST Cycle 1 GO programs #1895 and #2079. Support for both programs was provided by NASA through a grant from the Space Telescope Science Institute, which is operated by the Associations of Universities for Research in Astronomy, Incorporated, under NASA contract NAS5-26555. The Cosmic Dawn Center (DAWN) is funded by the Danish National Research Foundation under grant DNRF140. This work has received funding from the Swiss State Secretariat for Education, Research and Innovation (SERI) under contract number MB22.00072, as well as from the Swiss National Science Foundation (SNSF) through project grant 200020_207349. This work benefited from support from the George P. and Cynthia Woods Mitchell Institute for Fundamental Physics and Astronomy at Texas A&M University. CP thanks Marsha and Ralph Schilling for generous support of this research.","date_published":"2026-04-01T00:00:00Z","oa":1,"quality_controlled":"1","tmp":{"name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","short":"CC BY (4.0)","image":"/images/cc_by.png"},"day":"01","PlanS_conform":"1","month":"04","date_updated":"2026-10-12T07:44:07Z"}