The assembly of the halo system of the Milky Way as revealed by SDSS/SEGUE - The CEMP star connection

T. C. Beers; D. Carollo

doi:10.1051/epjconf/20121902001

The assembly of the halo system of the Milky Way as revealed by SDSS/SEGUE - The CEMP star connection

T. C. Beers^*, D. Carollo

^*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceeding › Conference proceeding contribution › peer-review

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Abstract

In recent years, massive new spectroscopic data sets, such as the over half million stellar spectra obtained during the course of SDSS (in particular its sub-survey SEGUE), have provided the quantitative detail required to formulate a coherent story of the assembly and evolution of the Milky Way. The disk and halo systems of our Galaxy have been shown to be both more complex, and more interesting, than previously thought. Here we concentrate on the halo system of the Milky Way. New data from SDSS/SEGUE has revealed that the halo system comprises at least two components, the inner halo and the outer halo, with demonstrably different characteristics (metallicity distributions, density distributions, kinematics, etc.). In addition to suggesting new ways to examine these data, the inner/outer halo dichotomy has enabled an understanding of at least one long-standing observational result, the increase of the fraction of carbon-enhanced metal-poor (CEMP) stars with decreasing metallicity.

Original language	English
Title of host publication	Assembling the Puzzle of the Milky Way
Editors	C. Relyé, A. Robin, M. Schultheis
Pages	p1-p6
Number of pages	6
Volume	19
DOIs	https://doi.org/10.1051/epjconf/20121902001
Publication status	Published - 2012
Event	International Conference on Assembling the Puzzle of the Milky Way - Le Grand-Bornand, France Duration: 17 Apr 2011 → 22 Apr 2011

Other

Other	International Conference on Assembling the Puzzle of the Milky Way
Country/Territory	France
City	Le Grand-Bornand
Period	17/04/11 → 22/04/11

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Copyright the Author(s). Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.

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title = "The assembly of the halo system of the Milky Way as revealed by SDSS/SEGUE - The CEMP star connection",

abstract = "In recent years, massive new spectroscopic data sets, such as the over half million stellar spectra obtained during the course of SDSS (in particular its sub-survey SEGUE), have provided the quantitative detail required to formulate a coherent story of the assembly and evolution of the Milky Way. The disk and halo systems of our Galaxy have been shown to be both more complex, and more interesting, than previously thought. Here we concentrate on the halo system of the Milky Way. New data from SDSS/SEGUE has revealed that the halo system comprises at least two components, the inner halo and the outer halo, with demonstrably different characteristics (metallicity distributions, density distributions, kinematics, etc.). In addition to suggesting new ways to examine these data, the inner/outer halo dichotomy has enabled an understanding of at least one long-standing observational result, the increase of the fraction of carbon-enhanced metal-poor (CEMP) stars with decreasing metallicity.",

author = "Beers, {T. C.} and D. Carollo",

note = "Copyright the Author(s). Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.; International Conference on Assembling the Puzzle of the Milky Way ; Conference date: 17-04-2011 Through 22-04-2011",

year = "2012",

doi = "10.1051/epjconf/20121902001",

language = "English",

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editor = "C. Rely{\'e} and A. Robin and M. Schultheis",

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Beers, TC & Carollo, D 2012, The assembly of the halo system of the Milky Way as revealed by SDSS/SEGUE - The CEMP star connection. in C Relyé, A Robin & M Schultheis (eds), Assembling the Puzzle of the Milky Way. vol. 19, 02001, pp. p1-p6, International Conference on Assembling the Puzzle of the Milky Way, Le Grand-Bornand, France, 17/04/11. https://doi.org/10.1051/epjconf/20121902001

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AU - Carollo, D.

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PY - 2012

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N2 - In recent years, massive new spectroscopic data sets, such as the over half million stellar spectra obtained during the course of SDSS (in particular its sub-survey SEGUE), have provided the quantitative detail required to formulate a coherent story of the assembly and evolution of the Milky Way. The disk and halo systems of our Galaxy have been shown to be both more complex, and more interesting, than previously thought. Here we concentrate on the halo system of the Milky Way. New data from SDSS/SEGUE has revealed that the halo system comprises at least two components, the inner halo and the outer halo, with demonstrably different characteristics (metallicity distributions, density distributions, kinematics, etc.). In addition to suggesting new ways to examine these data, the inner/outer halo dichotomy has enabled an understanding of at least one long-standing observational result, the increase of the fraction of carbon-enhanced metal-poor (CEMP) stars with decreasing metallicity.

AB - In recent years, massive new spectroscopic data sets, such as the over half million stellar spectra obtained during the course of SDSS (in particular its sub-survey SEGUE), have provided the quantitative detail required to formulate a coherent story of the assembly and evolution of the Milky Way. The disk and halo systems of our Galaxy have been shown to be both more complex, and more interesting, than previously thought. Here we concentrate on the halo system of the Milky Way. New data from SDSS/SEGUE has revealed that the halo system comprises at least two components, the inner halo and the outer halo, with demonstrably different characteristics (metallicity distributions, density distributions, kinematics, etc.). In addition to suggesting new ways to examine these data, the inner/outer halo dichotomy has enabled an understanding of at least one long-standing observational result, the increase of the fraction of carbon-enhanced metal-poor (CEMP) stars with decreasing metallicity.

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M3 - Conference proceeding contribution

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SN - 9782759807185

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BT - Assembling the Puzzle of the Milky Way

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The assembly of the halo system of the Milky Way as revealed by SDSS/SEGUE - The CEMP star connection

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