The OTELO survey
Aims. We present an analysis of the emitters (H α , H β , and [O II ]) from the OTELO survey, in order to characterize the star formation properties of low-mass galaxies (< 10 9 M ⊙ stellar masses). Methods. We calculated the specific star formation rate function, the stellar mass function, and, by integrating them, the associated densities for both quantities: the specific star formation rate density and the stellar mass density. We obtained the star formation history of our low-mass sample galaxies by fitting the spectral energy distribution of the galaxies. We also compared our results with those from the literature at different mass regimes and redshifts. Results. The specific star formation rate density and the stellar mass density for low-mass galaxies do not depend on the redshift, contrary to the behaviour presented by the high-mass galaxies. We found that the star formation histories of low-mass galaxies are characterized by a constant star formation rate, in contrast to high-mass galaxies. We interpret these results, in the context of the downsizing effect, as representative of the faster evolution of massive galaxies compared with low-mass ones.
Authors
- Á. Bongiovanni (ORCID: https://orcid.org/0000-0002-3557-3234)
- Jakub Nadolny (ORCID: https://orcid.org/0000-0003-1440-9061)
- J. Cepa (ORCID: https://orcid.org/0000-0002-6566-724X)
- J. Gallego (ORCID: https://orcid.org/0000-0003-1439-7697)
- M. Cerviño (ORCID: https://orcid.org/0000-0001-8009-231X)
- Mirjana Povi'c
- B. Cedrés (ORCID: https://orcid.org/0000-0002-7382-6407)
- J. I. González‐Serrano (ORCID: https://orcid.org/0000-0003-0795-3026)
- J. A. de Diego (ORCID: https://orcid.org/0000-0001-7040-069X)
- M. A. Lara-López (ORCID: https://orcid.org/0000-0001-7327-3489)
- M. Sánchez‐Portal (ORCID: https://orcid.org/0000-0003-0981-9664)
- E. J. Alfaro (ORCID: https://orcid.org/0000-0002-2234-7035)
- Carmen P. Padilla-Torres (ORCID: https://orcid.org/0000-0001-5475-165X)
- R. Pérez‐Martínez (ORCID: https://orcid.org/0000-0002-9127-5522)
- Mauro González-Otero (ORCID: https://orcid.org/0000-0002-4837-1615)
- A. M. Pérez García (ORCID: https://orcid.org/0000-0003-1634-3588)
Institutions
- Universidad Complutense de Madrid (ES)
- Universidad de Cantabria (ES)
- Mbarara University of Science and Technology (UG)
- Universidad de La Laguna (ES)
- European Space Astronomy Centre (ES)
- Ethiopian Space Science and Technology Institute (ET)
- Centro de Astrobiología (ES)
- Instituto de Astrofísica de Canarias (ES)
- Instituto de Radioastronomía Milimétrica (ES)
- Instituto de Física de Cantabria (ES)
- Instituto de Astrofísica de Andalucía (ES)
- Telescopio Nazionale Galileo (ES)
- Adam Mickiewicz University in Poznań (PL)
- Universidad Nacional Autónoma de México (MX)
Publication Details
- Journal
- Astronomy and Astrophysics
- Published
- 2025-03-14
- DOI
- https://doi.org/10.1051/0004-6361/202452898
- Primary Topic
- Astronomy and Astrophysical Research
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- National Science Foundation
- National Aeronautics and Space Administration
- Ministerio de Ciencia, Innovación y Universidades
- Agence Nationale de la Recherche
- Narodowe Centrum Nauki
- Narodowym Centrum Nauki
- Centre National de la Recherche Scientifique
- Narodowa Agencja Wymiany Akademickiej
- Instituto de Astrofísica de Canarias
- Science and Technology Facilities Council
- European Regional Development Fund
- Agencia Estatal de Investigación