PMO OpenIR
On the local stellar populations
Fuhrmann, Klaus1,2; Chini, Rolf1,3; Kaderhandt, Lena1; Chen, Zhiwei1,4,5
2017
Source PublicationMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
ISSN0035-8711
Volume464Issue:3Pages:2610-2621
Corresponding AuthorFuhrmann, Klaus(klaus@ing.iac.es)
AbstractWe present a study of the local stellar populations from a volume-complete all-sky survey of the about 500 bright stars with distances less than 25 pc and down to main-sequence effective temperatures T-eff >= 5300 K. The sample is dominated by a 93 per cent fraction of Population I stars, only 22 sources (5 per cent) are Population II stars, and 9 sources (2 per cent) are intermediate-disc stars. No source belongs to the halo. By following the mass of the stars instead of their light, the resulting subset of 136 long-lived stars distributes as 22 (16.2 per cent): 6 (4.4 per cent): 108 (79.4 per cent) for the Population II: intermediate disc: Population I, respectively. Along with the much larger scaleheight reached by Population II, this unbiased census of long-lived stars provides plain evidence for a starburst epoch in the early Milky Way, with the formation of a massive, rotationally supported, and dark Population II. The same conclusion arises from the substantial early chemical enrichment levels, exemplified here by the elements magnesium and iron, as it arises also from the local Population II white dwarfs. The kinematics, metallicity distribution functions, star formation rates, age-metallicity relations, the inventory of young stars, and the occurrence of blue straggler stars are discussed. A potentially new aspect of the survey is the possibility for substructure among the local Population II stars that may further subdivide into metal-poor and metal-rich sources.
Keywordstars: fundamental parameters Galaxy: evolution Galaxy: formation solar neighbourhood Galaxy: stellar content
DOI10.1093/mnras/stw2526
WOS KeywordSOLAR-TYPE STARS ; COOL DWARF STARS ; NEARBY STARS ; CHEMICAL EVOLUTION ; METAL ABUNDANCES ; WHITE-DWARFS ; MILKY-WAY ; METALLICITY DISTRIBUTION ; SPECTROSCOPIC SURVEY ; BINARY-SYSTEMS
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000393647600008
PublisherOXFORD UNIV PRESS
Citation statistics
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/23301
Collection中国科学院紫金山天文台
Corresponding AuthorFuhrmann, Klaus
Affiliation1.Ruhr Univ Bochum, Astron Inst, Univ Str 150, D-44801 Bochum, Germany
2.Isaac Newton Grp Telescopes, Apartado 321, E-38700 Santa Cruz De La Palma, Spain
3.Univ Catolica Norte, Inst Astron, Ave Angamos 0610,Casilla 1280, Antofagasta, Chile
4.Chinese Acad Sci, Purple Mt Observ, 2 West Beijing Rd, Nanjing 210008, Jiangsu, Peoples R China
5.Chinese Acad Sci, Key Lab Radio Astron, 2 West Beijing Rd, Nanjing 210008, Jiangsu, Peoples R China
Recommended Citation
GB/T 7714
Fuhrmann, Klaus,Chini, Rolf,Kaderhandt, Lena,et al. On the local stellar populations[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2017,464(3):2610-2621.
APA Fuhrmann, Klaus,Chini, Rolf,Kaderhandt, Lena,&Chen, Zhiwei.(2017).On the local stellar populations.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,464(3),2610-2621.
MLA Fuhrmann, Klaus,et al."On the local stellar populations".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 464.3(2017):2610-2621.
Files in This Item:
File Name/Size DocType Version Access License
2017015.pdf(5118KB)期刊论文作者接受稿开放获取CC BY-NC-SAView Application Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Fuhrmann, Klaus]'s Articles
[Chini, Rolf]'s Articles
[Kaderhandt, Lena]'s Articles
Baidu academic
Similar articles in Baidu academic
[Fuhrmann, Klaus]'s Articles
[Chini, Rolf]'s Articles
[Kaderhandt, Lena]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Fuhrmann, Klaus]'s Articles
[Chini, Rolf]'s Articles
[Kaderhandt, Lena]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: 2017015.pdf
Format: Adobe PDF
All comments (0)
No comment.
 

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