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Constraining the PopIII IMF with high-z GRBs
Ma, Q.1,2,3; Maio, U.4; Ciardi, B.1; Salvaterra, R.5
2017-04-01
Source PublicationMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
ISSN0035-8711
Volume466Issue:1Pages:1140-1148
Corresponding AuthorMa, Q.(maqb@mpa-garching.mpg.de)
AbstractWe study the signatures of enrichment from PopIII stars in observations of PopII GRBs (GRBIIs) at high redshift by using numerical N-body/hydrodynamical simulations including atomic and molecular cooling, star formation and metal spreading from stellar populations with different initial mass functions (IMFs), yields and lifetimes. PopIII and PopII star formation regimes are followed simultaneously and both a top-heavy and a Salpeter-like IMF for pristine PopIII star formation are adopted. We find that the fraction of GRBIIs hosted in a medium previously enriched by PopIII stars (PopIII-dominated) is model-independent. Typical abundance ratios, such as [Si/O] versus[C/O] and [Fe/C] versus[Si/C], can help to disentangle enrichment from massive and intermediate PopIII stars, while low-mass first stars are degenerate with regular PopII generations. The properties of galaxies hosting PopIII-dominated GRBIIs are not very sensitive to the particular assumption on the mass of the first stars.
Keywordgamma-ray burst: general stars: Population III cosmology: theory dark ages, reionization first stars early Universe
DOI10.1093/mnras/stw3159
WOS KeywordGAMMA-RAY BURST ; INTERMEDIATE-MASS STARS ; POPULATION-III STARS ; HIGH-REDSHIFT GRBS ; 1ST STARS ; CHEMICAL ABUNDANCES ; LUMINOSITY FUNCTION ; BLACK-HOLES ; EVOLUTION ; METAL
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000398112400079
PublisherOXFORD UNIV PRESS
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/23175
Collection中国科学院紫金山天文台
Corresponding AuthorMa, Q.
Affiliation1.Max Planck Inst Astrophys, Karl Schwarzschild Str 1, D-85748 Garching, Germany
2.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Jiangsu, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Leibniz Inst Astrophys, Sternwarte 16, D-14482 Potsdam, Germany
5.IASF Milano, INAF, Via E Bassini 15, I-20133 Milan, Italy
Recommended Citation
GB/T 7714
Ma, Q.,Maio, U.,Ciardi, B.,et al. Constraining the PopIII IMF with high-z GRBs[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2017,466(1):1140-1148.
APA Ma, Q.,Maio, U.,Ciardi, B.,&Salvaterra, R..(2017).Constraining the PopIII IMF with high-z GRBs.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,466(1),1140-1148.
MLA Ma, Q.,et al."Constraining the PopIII IMF with high-z GRBs".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 466.1(2017):1140-1148.
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