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Cosmic phylogeny: reconstructing the chemical history of the solar neighbourhood with an evolutionary tree

Abstract:

Using 17 chemical elements as a proxy for stellar DNA, we present a full phylogenetic study of stars in the solar neighbourhood. This entails applying a clustering technique that is widely used in molecular biology to construct an evolutionary tree from which three branches emerge. These are interpreted as stellar populations that separate in age and kinematics and can be thus attributed to the thin disc, the thick disc and an intermediate population of probable distinct origin. We further fi...

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Publication status:
Published
Peer review status:
Peer reviewed
Version:
Publisher's version

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Publisher copy:
10.1093/mnras/stx075

Authors


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Institution:
University of Oxford
Division:
MPLS Division
Department:
Physics; Theoretical Physics
Bertranpetit, J More by this author
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Grant:
FP7/2007-2013/ERC 320360 and 321067
Publisher:
Oxford University Press Publisher's website
Journal:
Monthly Notices of the Royal Astronomical Society Journal website
Volume:
467
Issue:
1
Pages:
1140-1153
Publication date:
2017-02-02
Acceptance date:
2017-01-10
DOI:
EISSN:
1365-2966
ISSN:
0035-8711
Pubs id:
pubs:738892
URN:
uri:4f9b0b08-8805-4275-bfe8-ea70e66f3fa7
UUID:
uuid:4f9b0b08-8805-4275-bfe8-ea70e66f3fa7
Local pid:
pubs:738892

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