FirstLight IV: diversity in sub-L-* galaxies at cosmic dawn

Daniel Ceverino; Michaela Hirschmann; Ralf S. Klessen; Simon C. O. Glover; Stephane Charlot; Anna Feltre

doi:10.1093/mnras/stab1206

FirstLight IV: diversity in sub-L-* galaxies at cosmic dawn

Daniel Ceverino^*, Michaela Hirschmann, Ralf S. Klessen, Simon C. O. Glover, Stephane Charlot, Anna Feltre

^*Corresponding author for this work

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Research output: Contribution to journal › Journal article › Research › peer-review

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Abstract

Using a large sample of sub-L-* galaxies, with similar UV magnitudes, M-UV similar or equal to -19 at z similar or equal to 6, extracted from the FirstLight simulations, we show the diversity of galaxies at the end of the reionization epoch. We find a factor similar to 40 variation in the specific star formation rate (sSFR). This drives a similar to 1 dex range in equivalent width of the [O III]lambda 5007 line. Variations in nebular metallicity and ionization parameter within H II regions lead to a scatter in the equivalent widths and [O III]/H alpha line ratio at a fixed sSFR. [O III]-bright ([O III]/H alpha>1) emitters have higher ionization parameters and/or higher metallicities than H alpha-bright ([O III]/H alpha

Original language	English
Journal	Monthly Notices of the Royal Astronomical Society
Volume	504
Issue number	3
Pages (from-to)	4472-4480
Number of pages	9
ISSN	0035-8711
DOIs	https://doi.org/10.1093/mnras/stab1206
Publication status	Published - 1 Jul 2021

Keywords

galaxies: evolution
galaxies: formation
galaxies: high-redshift
STAR-FORMATION RATE
ULTRA DEEP FIELD
TO 7 GALAXIES
LESS-THAN 7
FORMATION RATES
STELLAR MASS
NEBULAR EMISSION
REIONIZATION
Z-SIMILAR-TO-6
SPITZER/IRAC

Access to Document

10.1093/mnras/stab1206

stab1206Final published version, 3.22 MBLicence: CC BY-NC

Cite this

@article{0d93b501a2bf4fb588cd279f93de12d3,

title = "FirstLight IV: diversity in sub-L-* galaxies at cosmic dawn",

abstract = "Using a large sample of sub-L-* galaxies, with similar UV magnitudes, M-UV similar or equal to -19 at z similar or equal to 6, extracted from the FirstLight simulations, we show the diversity of galaxies at the end of the reionization epoch. We find a factor similar to 40 variation in the specific star formation rate (sSFR). This drives a similar to 1 dex range in equivalent width of the [O III]lambda 5007 line. Variations in nebular metallicity and ionization parameter within H II regions lead to a scatter in the equivalent widths and [O III]/H alpha line ratio at a fixed sSFR. [O III]-bright ([O III]/H alpha>1) emitters have higher ionization parameters and/or higher metallicities than H alpha-bright ([O III]/H alpha",

keywords = "galaxies: evolution, galaxies: formation, galaxies: high-redshift, STAR-FORMATION RATE, ULTRA DEEP FIELD, TO 7 GALAXIES, LESS-THAN 7, FORMATION RATES, STELLAR MASS, NEBULAR EMISSION, REIONIZATION, Z-SIMILAR-TO-6, SPITZER/IRAC",

author = "Daniel Ceverino and Michaela Hirschmann and Klessen, {Ralf S.} and Glover, {Simon C. O.} and Stephane Charlot and Anna Feltre",

year = "2021",

month = jul,

day = "1",

doi = "10.1093/mnras/stab1206",

language = "English",

volume = "504",

pages = "4472--4480",

journal = "Royal Astronomical Society. Monthly Notices",

issn = "0035-8711",

publisher = "Oxford University Press",

number = "3",

}

TY - JOUR

T1 - FirstLight IV

T2 - diversity in sub-L-* galaxies at cosmic dawn

AU - Ceverino, Daniel

AU - Hirschmann, Michaela

AU - Klessen, Ralf S.

AU - Glover, Simon C. O.

AU - Charlot, Stephane

AU - Feltre, Anna

PY - 2021/7/1

Y1 - 2021/7/1

N2 - Using a large sample of sub-L-* galaxies, with similar UV magnitudes, M-UV similar or equal to -19 at z similar or equal to 6, extracted from the FirstLight simulations, we show the diversity of galaxies at the end of the reionization epoch. We find a factor similar to 40 variation in the specific star formation rate (sSFR). This drives a similar to 1 dex range in equivalent width of the [O III]lambda 5007 line. Variations in nebular metallicity and ionization parameter within H II regions lead to a scatter in the equivalent widths and [O III]/H alpha line ratio at a fixed sSFR. [O III]-bright ([O III]/H alpha>1) emitters have higher ionization parameters and/or higher metallicities than H alpha-bright ([O III]/H alpha

AB - Using a large sample of sub-L-* galaxies, with similar UV magnitudes, M-UV similar or equal to -19 at z similar or equal to 6, extracted from the FirstLight simulations, we show the diversity of galaxies at the end of the reionization epoch. We find a factor similar to 40 variation in the specific star formation rate (sSFR). This drives a similar to 1 dex range in equivalent width of the [O III]lambda 5007 line. Variations in nebular metallicity and ionization parameter within H II regions lead to a scatter in the equivalent widths and [O III]/H alpha line ratio at a fixed sSFR. [O III]-bright ([O III]/H alpha>1) emitters have higher ionization parameters and/or higher metallicities than H alpha-bright ([O III]/H alpha

KW - galaxies: evolution

KW - galaxies: formation

KW - galaxies: high-redshift

KW - STAR-FORMATION RATE

KW - ULTRA DEEP FIELD

KW - TO 7 GALAXIES

KW - LESS-THAN 7

KW - FORMATION RATES

KW - STELLAR MASS

KW - NEBULAR EMISSION

KW - REIONIZATION

KW - Z-SIMILAR-TO-6

KW - SPITZER/IRAC

U2 - 10.1093/mnras/stab1206

DO - 10.1093/mnras/stab1206

M3 - Journal article

VL - 504

SP - 4472

EP - 4480

JO - Royal Astronomical Society. Monthly Notices

JF - Royal Astronomical Society. Monthly Notices

SN - 0035-8711

IS - 3

ER -