The OTELO Survey: The Star Formation Rate Evolution of Low-mass Galaxies

被引：2

作者：

Cedres, Bernabe ^{[1
,2
]}

Maria Perez-Garcia, Ana ^{[3
,4
]}

Perez-Martinez, Ricardo ^{[4
,5
]}

Cervino, Miguel ^{[3
]}

Gallego, Jesus ^{[6
]}

Bongiovanni, Angel ^{[4
,7
]}

Cepa, Jordi ^{[1
,2
,4
]}

Navarro Martinez, Rocio ^{[4
]}

Nadolny, Jakub ^{[1
,2
]}

Lara-Lopez, Maritza A. ^{[8
]}

Sanchez-Portal, Miguel ^{[4
,7
]}

Alfaro, Emilio J. ^{[9
]}

de Diego, Jose A. ^{[10
]}

Gonzalez-Otero, Mauro ^{[1
,2
,4
]}

Jesus Gonzalez, J. ^{[10
]}

Ignacio Gonzalez-Serrano, J. ^{[11
]}

Torres, Carmen P. Padilla ^{[4
,12
,13
]}

机构：

[1] Inst Astrofis Canarias IAC, E-38200 Tenerife, Spain

[2] Univ La Laguna ULL, Dept Astrofis, E-38205 Tenerife, Spain

[3] Ctr Astrobiol CSIC INTA, ESAC Campus, E-28692 Madrid, Spain

[4] Assoc Astrofis Promoc Invest Instrumentac & Desar, ASPID, E-38205 Tenerife, Spain

[5] ISDEFE European Space Astron Ctr ESAC ESA, Pob 78, E-28690 Madrid, Spain

[6] Univ Complutense Madrid, Inst Fis Particulas & Cosmos, IPARCOS, Dept Fis Tierra & Astrofis, E-28040 Madrid, Spain

[7] Inst Radioastron Millimetr IRAM, Av Divina Pastora 7, E-18012 Granada, Spain

[8] Armagh Observ & Planetarium, Coll Hill, Armagh BT61 9DG, North Ireland

[9] CSIC, Inst Astrofis Andalucia, E-18080 Granada, Spain

[10] Univ Nacl Autonoma Mexico, Inst Astron, Apdo Postal 70-264, Ciudad De Mexico 04510, Mexico

[11] CSIC Univ Cantabria, Inst Fis Cantabria, E-39005 Santander, Spain

[12] Telescopio Nazl Galileo, INAF, E-38700 Santa Cruz De La Palma, Spain

[13] Fdn Galileo Galilei INAF, Rambla Jose Ana Fernandez Perez 7, E-38712 Tenerife, Spain

来源：

ASTROPHYSICAL JOURNAL LETTERS | 2021年 / 915卷 / 01期

关键词：

FORMATION RATE DENSITY; FORMING GALAXIES; LUMINOSITY FUNCTION; H-ALPHA; O-II; STELLAR MASS; DEEP; REDSHIFTS; EMITTERS; CALIBRATIONS;

D O I：

10.3847/2041-8213/ac0a7e

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present the analysis of a sample of H alpha, H beta, and [O ii] emission line galaxies from the OTELO survey, with masses typically below log(M*/M-circle dot)similar to 9.4 z similar to 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 similar to 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.

引用

页数：6

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