The ALMA-CRISTAL Survey: Spatially-resolved Star Formation Activity and Dust Content in 4 < z < 6 Star-forming Galaxies

arXiv - PHYS - Astrophysics of Galaxies Pub Date : 2024-09-17 DOI:arxiv-2409.10961

Juno Li, Elisabete Da Cunha, Jorge González-López, Manuel Aravena, Ilse De Looze, N. M. Förster Schreiber, Rodrigo Herrera-Camus, Justin Spilker, Ken-ichi Tadaki, Loreto Barcos-Munoz, Andrew J. Battisti, Jack E. Birkin, Rebecca A. A. Bowler, Rebecca Davies, Tanio Díaz-Santos, Andrea Ferrara, Deanne B. Fisher, Jacqueline Hodge, Ryota Ikeda, Meghana Killi, Lilian Lee, Daizhong Liu, Dieter Lutz, Ikki Mitsuhashi, Thorsten Naab, Ana Posses, Monica Relaño, Manuel Solimano, Hannah Übler, Stefan Anthony van der Giessen, Vicente Villanueva

{"title":"The ALMA-CRISTAL Survey: Spatially-resolved Star Formation Activity and Dust Content in 4 < z < 6 Star-forming Galaxies","authors":"Juno Li, Elisabete Da Cunha, Jorge González-López, Manuel Aravena, Ilse De Looze, N. M. Förster Schreiber, Rodrigo Herrera-Camus, Justin Spilker, Ken-ichi Tadaki, Loreto Barcos-Munoz, Andrew J. Battisti, Jack E. Birkin, Rebecca A. A. Bowler, Rebecca Davies, Tanio Díaz-Santos, Andrea Ferrara, Deanne B. Fisher, Jacqueline Hodge, Ryota Ikeda, Meghana Killi, Lilian Lee, Daizhong Liu, Dieter Lutz, Ikki Mitsuhashi, Thorsten Naab, Ana Posses, Monica Relaño, Manuel Solimano, Hannah Übler, Stefan Anthony van der Giessen, Vicente Villanueva","doi":"arxiv-2409.10961","DOIUrl":null,"url":null,"abstract":"Using a combination of HST, JWST, and ALMA data, we perform spatially\nresolved spectral energy distributions (SED) fitting of fourteen 4<z<6\nUV-selected main-sequence galaxies targeted by the [CII] Resolved ISM in\nStar-forming Galaxies with ALMA (CRISTAL) Large Program. We consistently model\nthe emission from stars and dust in ~0.5-1kpc spatial bins to obtain maps of\ntheir physical properties. We find no offsets between the stellar masses (M*)\nand star formation rates (SFRs) derived from their global emission and those\nfrom adding up the values in our spatial bins, suggesting there is no bias of\noutshining by young stars on the derived global properties. We show that ALMA\nobservations are important to derive robust parameter maps because they reduce\nthe uncertainties in Ldust (hence Av and SFR). Using these maps we explore the\nresolved star-forming main sequence for z~5 galaxies, finding that this\nrelation persists in typical star-forming galaxies in the early Universe. We\nfind less obscured star formation where the M* (and SFR) surface densities are\nhighest, typically in the central regions, contrary to the global relation\nbetween these parameters. We speculate this could be caused by feedback driving\ngas and dust out of these regions. However, more observations of infrared\nluminosities with ALMA are needed to verify this. Finally, we test empirical\nSFR prescriptions based on the UV+IR and [CII] line luminosity, finding they\nwork well at the scales probed (~kpc). Our work demonstrates the usefulness of\njoint HST, JWST, and ALMA resolved SED modeling analyses at high redshift.","PeriodicalId":501187,"journal":{"name":"arXiv - PHYS - Astrophysics of Galaxies","volume":"14 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2024-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"arXiv - PHYS - Astrophysics of Galaxies","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/arxiv-2409.10961","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}