The ALMA-CRISTAL Survey: Spatially Resolved Star Formation Activity and Dust Content in 4 < z < 6 Star-forming Galaxies
Abstract Using a combination of Hubble Space Telescope (HST), JWST, and Atacama Large Millimeter/submillimeter Array (ALMA) data, we perform spatially resolved spectral energy distributions (SED) fitting of fourteen 4 < z < 6 ultraviolet (UV)-selected main-sequence galaxies targeted by the ALMA Large Program [C ii ] Resolved ISM in Star-forming Galaxies. We consistently model the emission from stars and dust in ∼0.5–1 kpc spatial bins to obtain maps of their physical properties. We find no offsets between the stellar masses ( M * ) and star formation rates (SFRs) derived from their global emission and those from adding up the values in our spatial bins, suggesting there is no bias of outshining by young stars on the derived global properties. We show that ALMA observations are important to derive robust parameter maps because they reduce the uncertainties in L dust (hence, A V and SFR). Using these maps, we explore the resolved star-forming main sequence for z ∼ 5 galaxies, finding that this relation persists in typical star-forming galaxies in the early Universe. We find less obscured star formation where the M * (and SFR) surface densities are highest, typically in the central regions, contrary to the global relation between these parameters. We speculate this could be caused by feedback driving gas and dust out of these regions. However, more observations of IR luminosities with ALMA are needed to verify this. Finally, we test empirical SFR prescriptions based on the UV+IR and [C ii ] line luminosity, finding they work well at the scales probed (approximately kiloparsec). Our work demonstrates the usefulness of joint HST-, JWST-, and ALMA-resolved SED modeling analyses at high redshift.
Authors
- Ilse De Looze (ORCID: https://orcid.org/0000-0001-9419-6355)
- S. A. van der Giessen (ORCID: https://orcid.org/0009-0001-4144-9635)
- M. Relaño (ORCID: https://orcid.org/0000-0003-1682-1148)
- Jacqueline Hodge (ORCID: https://orcid.org/0000-0001-6586-8845)
- Thorsten Naab (ORCID: https://orcid.org/0000-0002-7314-2558)
- Jorge González-López (ORCID: https://orcid.org/0000-0003-3926-1411)
- Ken-ichi Tadaki (ORCID: https://orcid.org/0000-0001-9728-8909)
- Vicente Villanueva (ORCID: https://orcid.org/0000-0002-5877-379X)
- Rodrigo Herrera-Camus (ORCID: https://orcid.org/0000-0002-2775-0595)
- Lilian L. Lee (ORCID: https://orcid.org/0000-0001-7457-4371)
- David B. Fisher (ORCID: https://orcid.org/0000-0003-0645-5260)
- Ikki Mitsuhashi (ORCID: https://orcid.org/0000-0001-7300-9450)
- Jack E. Birkin (ORCID: https://orcid.org/0000-0002-3272-7568)
- D. Lutz (ORCID: https://orcid.org/0000-0003-0291-9582)
- Andrea Ferrara (ORCID: https://orcid.org/0000-0002-9400-7312)
- Manuel Solimano (ORCID: https://orcid.org/0000-0001-6629-0379)
- Hannah Übler (ORCID: https://orcid.org/0000-0003-4891-0794)
- Justin Spilker (ORCID: https://orcid.org/0000-0003-3256-5615)
- R. L. Davies (ORCID: https://orcid.org/0000-0002-3324-4824)
- Meghana Killi (ORCID: https://orcid.org/0000-0001-5289-3291)
- R. A. A. Bowler (ORCID: https://orcid.org/0000-0003-3917-1678)
- Ryota Ikeda (ORCID: https://orcid.org/0000-0002-2634-9169)
- Ana Posses
- Elisabete da Cunha (ORCID: https://orcid.org/0000-0001-9759-4797)
- Manuel Aravena (ORCID: https://orcid.org/0000-0002-6290-3198)
- Juno Li (ORCID: https://orcid.org/0000-0002-8184-5229)
- Andrew Battisti (ORCID: https://orcid.org/0000-0003-4569-2285)
- Daizhong Liu (ORCID: https://orcid.org/0000-0001-9773-7479)
- T. Díaz-Santos (ORCID: https://orcid.org/0000-0003-0699-6083)
- N. M. Förster Schreiber (ORCID: https://orcid.org/0000-0003-4264-3381)
- Loreto Barcos-Muñoz (ORCID: https://orcid.org/0000-0003-0057-8892)
Publication Details
- Journal
- The Astrophysical Journal
- Published
- 2024-11-01
- DOI
- https://doi.org/10.3847/1538-4357/ad7fee
- Citations
- 16
- Primary Topic
- Galaxies: Formation, Evolution, Phenomena
- Type
- article
- Field-Weighted Citation Impact
- 5.30
Funders
- European Commission
- National Research Foundation
- Danmarks Grundforskningsfond
- Belgian Federal Science Policy Office
- Fonds Wetenschappelijk Onderzoek
- Vlaamse regering
- Agencia Nacional de Investigación y Desarrollo
- Horizon 2020 Framework Programme
- Science and Technology Facilities Council
- Australian Research Council
- Japan Society for the Promotion of Science
- Agencia Estatal de Investigación