---
res:
  bibo_abstract:
  - 'The Hα emission line in galaxies is a powerful tracer of their recent star formation
    activity. With the advent of JWST, we are now able to routinely observe Hα in
    galaxies at high redshift (z ≳ 3) and thus measure their star formation rates
    (SFRs). However, using classical SFR(Hα) calibrations to derive the SFRs leads
    to biased results because high-redshift galaxies are commonly characterized by
    low metallicities and bursty star formation histories, affecting the conversion
    factor between the Hα luminosity (LHα) and the SFR. We developed a set of new
    SFR(Hα) calibrations that allowed us to predict the SFRs of Hα-emitters at z ≳ 3
    with very little error. We used the SPHINX cosmological simulations to select
    a sample of star-forming galaxies representative of the Hα-emitter population
    observed with JWST. We then derived linear corrections to the classical SFR(Hα)
    calibrations that took variations in the physical properties (e.g., stellar metallicities)
    among individual galaxies into account. We obtained two new SFR(Hα) calibrations
    that compared to the classical calibrations reduce the root mean squared error
    (RMSE) in the predicted SFRs by ΔRMSE ≈ 0.04 dex and ΔRMSE ≈ 0.06 dex, respectively.
    Using the recent JWST NIRCam/grism observations of Hα-emitters at z ∼ 6, we show
    that the new calibrations affect the high-redshift galaxy population statistics:
    (i) the estimated cosmic SFR density decreases by ΔρSFR ≈ 12%, and (ii) the observed
    slope of the star formation main sequence increases by Δ∂logSFR/∂logM★ = 0.08 ± 0.02.@eng'
  bibo_authorlist:
  - foaf_Person:
      foaf_givenName: Ivan
      foaf_name: Kramarenko, Ivan
      foaf_surname: Kramarenko
      foaf_workInfoHomepage: http://www.librecat.org/personId=9a9394cb-3200-11ee-973b-f5ba2a8b16e4
    orcid: 0000-0001-5346-6048
  - foaf_Person:
      foaf_givenName: J.
      foaf_name: Rosdahl, J.
      foaf_surname: Rosdahl
  - foaf_Person:
      foaf_givenName: J.
      foaf_name: Blaizot, J.
      foaf_surname: Blaizot
  - foaf_Person:
      foaf_givenName: Jorryt J
      foaf_name: Matthee, Jorryt J
      foaf_surname: Matthee
      foaf_workInfoHomepage: http://www.librecat.org/personId=7439a258-f3c0-11ec-9501-9df22fe06720
    orcid: 0000-0003-2871-127X
  - foaf_Person:
      foaf_givenName: H.
      foaf_name: Katz, H.
      foaf_surname: Katz
  - foaf_Person:
      foaf_givenName: Claudia
      foaf_name: Di Cesare, Claudia
      foaf_surname: Di Cesare
      foaf_workInfoHomepage: http://www.librecat.org/personId=2d002343-372f-11ef-98ec-a164d20427cb
  bibo_doi: 10.1051/0004-6361/202557114
  bibo_volume: 707
  dct_date: 2026^xs_gYear
  dct_isPartOf:
  - http://id.crossref.org/issn/0004-6361
  - http://id.crossref.org/issn/1432-0746
  dct_language: eng
  dct_publisher: EDP Sciences@
  dct_title: H α as a tracer of star formation in the SPHINX cosmological simulations@
...