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The OTELO survey: the star formation rate evolution of low-mass galaxies

Abstract: We present the analysis of a sample of H [alfa], H[beta], and [O ii] emission line galaxies from the OTELO survey, with masses typically below and redshifts between z 0.4 and 1.43. We study the star formation rate, star formation rate density, and their number density and evolution with redshift. We obtain a robust estimate of the specific star formation rate - stellar mass relation based on the lowest-mass sample published so far. We also determine a flat trend of the star formation rate density (SFRD) and number density with redshift. Our results suggest a scenario of no evolution of the number density of galaxies, regardless of their masses, up to redshift z ? 1.4. This implies a gradual change of the relative importance of the star-forming processes, from high-mass galaxies to low-mass galaxies, with decreasing redshift. We also find little or no variation of the SFRD in the redshift range of 0.4 < z < 1.43

 Fuente: Astrophysical Journal Letters, 2021, 915, L17

 Editorial: Institute of Physics Publishing

 Fecha de publicación: 01/07/2021

 Nº de páginas: 6

 Tipo de publicación: Artículo de Revista

 DOI: 10.3847/2041-8213/ac0a7e

 ISSN: 2041-8205,2041-8213

 Proyecto español: AYA2014 - 58861 - C3 - 1 - P

 Url de la publicación: ttps://doi.org/10.3847/2041-8213/ac0a7e

Autoría

CEDRÉS, BERNABÉ

PÉREZ-GARCIÁ, ANA MARIÁ

PÉREZ-MARTÍNEZ, RICARDO

CERVINO, MIGUEL

GALLEGO, JESÚS

BONGIOVANNI, ANGEL

CEPA, JORDI

NAVARRO MARTÍNEZ, ROCÍO

NADOLNY, JAKUB

LARA-LÓPEZ, MARITZA A.

SÁNCHEZ-PORTAL, MIGUEL

ALFARO, EMILIO J.

DE DIEGO, JOSÉ A.

GONZÁLEZ-OTERO, MAURO

JESÚS GONZÁLEZ J.

PADILLA TORRES, CARMEN P.