PMO OpenIR  > 毫米波和亚毫米波技术实验室
PopIII signatures in the spectra of PopII/I GRBs
Ma, Q.1,2,3; Maio, U.4,5; Ciardi, B.1; Salvaterra, R.6
2015-05-21
Source PublicationMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
Volume449Issue:3Pages:3006-3014
AbstractWe investigate signatures of Population III (PopIII) stars in the metal-enriched environment of gamma-ray bursts (GRBs) originating from Population II-I (PopII/I) stars by using abundance ratios derived from numerical simulations that follow stellar evolution and chemical enrichment. We find that at z > 10 more than 10 per cent of PopII/I GRBs explode in a medium previously enriched by PopIII stars (we refer to them as GRBII -> III). Although the formation of GRBII -> III is more frequent than that of pristine PopIII GRBs (GRBIIIs), we find that the expected GRBII -> III observed rate is comparable to that of GRBIIIs, due to the usually larger luminosities of the latter. GRBII. III events take place preferentially in small protogalaxies with stellar masses M-star similar to 10(4.5) - 10(7) M-circle dot, star formation rates SFR similar to 10(-3) - 10(-1) M-circle dot yr(-1) and metallicities Z similar to 10(-4) - 10(-2) Z(circle dot). On the other hand, galaxies with Z < 10(-2.8) Z(circle dot) are dominated by metal enrichment from PopIII stars and should preferentially host GRBII. III. Hence, measured GRB metal content below this limit could represent a strong evidence of enrichment by pristine stellar populations. We discuss how to discriminate PopIII metal enrichment on the basis of various abundance ratios observable in the spectra of GRBs' afterglows. By employing such analysis, we conclude that the currently known candidates at redshift z similar or equal to 6 - i.e. GRB 050904 and GRB 130606A - are likely not originated in environments pre-enriched by PopIII stars. Abundance measurements for GRBs at z similar or equal to 5 - such as GRB 100219A and GRB 111008A - are still poor to draw definitive conclusions, although their hosts seem to be dominated by PopII/I pollution and do not show evident signatures of massive PopIII pre-enrichment.
KeywordGamma-ray Burst: General Galaxies: High-redshift Cosmology: Theory Early Universe
Subject Area天文和天体物理
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1093/mnras/stv477
WOS KeywordGAMMA-RAY BURST ; POPULATION-III STARS ; METAL-POOR STARS ; INTERMEDIATE-MASS STARS ; HIGH-REDSHIFT GRBS ; 1ST STARS ; COSMIC REIONIZATION ; CHEMICAL ENRICHMENT ; HOST GALAXIES ; INTERGALACTIC MEDIUM
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000355337800062
Citation statistics
Cited Times:10[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/14807
Collection毫米波和亚毫米波技术实验室
Affiliation1.Max Planck Inst Astrophys, 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.INAF Osservatorio Astronom Trieste, I-34131 Trieste, Italy
5.Leibniz Inst Astrophys, D-14482 Potsdam, Germany
6.IASF Milano, INAF, I-20133 Milan, Italy
Recommended Citation
GB/T 7714
Ma, Q.,Maio, U.,Ciardi, B.,et al. PopIII signatures in the spectra of PopII/I GRBs[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2015,449(3):3006-3014.
APA Ma, Q.,Maio, U.,Ciardi, B.,&Salvaterra, R..(2015).PopIII signatures in the spectra of PopII/I GRBs.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,449(3),3006-3014.
MLA Ma, Q.,et al."PopIII signatures in the spectra of PopII/I GRBs".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 449.3(2015):3006-3014.
Files in This Item:
File Name/Size DocType Version Access License
2015063.pdf(522KB) 开放获取Apache LicenseView Application Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Ma, Q.]'s Articles
[Maio, U.]'s Articles
[Ciardi, B.]'s Articles
Baidu academic
Similar articles in Baidu academic
[Ma, Q.]'s Articles
[Maio, U.]'s Articles
[Ciardi, B.]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Ma, Q.]'s Articles
[Maio, U.]'s Articles
[Ciardi, B.]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: 2015063.pdf
Format: Adobe PDF
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.