Structure and dynamics of the old galactic components

Masashi Chiba; Hirohito Hayashi; Motoko Yamada

doi:10.1007/978-0-387-72768-4_8

Structure and dynamics of the old galactic components

Masashi Chiba, Hirohito Hayashi, Motoko Yamada

SCI - Astronomy

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

Abstract

We present here the recent progress in our understanding of the old stellar components of the Milky Way as fossil records of galaxy formation. Special attention will be paid to if the Cold Dark Matter (CDM) theory as a current theoretical paradigm is able to reproduce recently accumulated data sets of Galactic stars as provided by extensive surveys such as SDSS. We show our recent studies in this regard. First, we have simulated the dynamical interaction between a stellar disk and numerous CDM subhalos to get insights into the origin of the thin and thick disks. Second, we have analyzed the global dynamics of more than 1600 field horizontal branch stars as halo tracers to probe their velocity distribution inside the dark halo of the Milky Way. A detailed comparison with the CDM predictions has been made and key issues are addressed for understanding the formation of the Milky Way.

Original language	English
Title of host publication	Astrophysics and Space Science Proceedings
Editors	Keiichi Wada, Francoise Combes
Publisher	Springer Science and Business Media B.V.
Pages	55-62
Number of pages	8
ISBN (Electronic)	9780387727684
ISBN (Print)	9780387727677, 9780387727677, 9780387876207, 9781402055720, 9781402069321, 9781402088674, 9781402091896, 9781441981608, 9781441983688, 9783540758259, 9783642033230, 9783642103216, 9783642103513, 9783642113406, 9783642172502, 9789048133994, 9789048134984
DOIs	https://doi.org/10.1007/978-0-387-72768-4_8
Publication status	Published - 2008
Event	Symposium on Mapping the Galaxy and Nearby Galaxies, 2006 - Ishigaki island, Japan Duration: 2006 Jun 26 → 2006 Jun 30

Publication series

Name	Astrophysics and Space Science Proceedings
Volume	0
ISSN (Print)	1570-6591
ISSN (Electronic)	1570-6605

Other

Other	Symposium on Mapping the Galaxy and Nearby Galaxies, 2006
Country/Territory	Japan
City	Ishigaki island
Period	06/6/26 → 06/6/30

ASJC Scopus subject areas

Physics and Astronomy(all)
Computer Science Applications
Spectroscopy
Space and Planetary Science
Nuclear and High Energy Physics

Access to Document

10.1007/978-0-387-72768-4_8

Cite this

Structure and dynamics of the old galactic components. / Chiba, Masashi; Hayashi, Hirohito; Yamada, Motoko.

Astrophysics and Space Science Proceedings. ed. / Keiichi Wada; Francoise Combes. Springer Science and Business Media B.V., 2008. p. 55-62 (Astrophysics and Space Science Proceedings; Vol. 0).

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

Chiba, M, Hayashi, H & Yamada, M 2008, Structure and dynamics of the old galactic components. in K Wada & F Combes (eds), Astrophysics and Space Science Proceedings. Astrophysics and Space Science Proceedings, vol. 0, Springer Science and Business Media B.V., pp. 55-62, Symposium on Mapping the Galaxy and Nearby Galaxies, 2006, Ishigaki island, Japan, 06/6/26. https://doi.org/10.1007/978-0-387-72768-4_8

@inproceedings{176a917566ed47c79162894f11ca4523,

title = "Structure and dynamics of the old galactic components",

abstract = "We present here the recent progress in our understanding of the old stellar components of the Milky Way as fossil records of galaxy formation. Special attention will be paid to if the Cold Dark Matter (CDM) theory as a current theoretical paradigm is able to reproduce recently accumulated data sets of Galactic stars as provided by extensive surveys such as SDSS. We show our recent studies in this regard. First, we have simulated the dynamical interaction between a stellar disk and numerous CDM subhalos to get insights into the origin of the thin and thick disks. Second, we have analyzed the global dynamics of more than 1600 field horizontal branch stars as halo tracers to probe their velocity distribution inside the dark halo of the Milky Way. A detailed comparison with the CDM predictions has been made and key issues are addressed for understanding the formation of the Milky Way.",

author = "Masashi Chiba and Hirohito Hayashi and Motoko Yamada",

note = "Publisher Copyright: {\textcopyright} 2008, Springer Netherlands. All rights reserved.; Symposium on Mapping the Galaxy and Nearby Galaxies, 2006 ; Conference date: 26-06-2006 Through 30-06-2006",

year = "2008",

doi = "10.1007/978-0-387-72768-4_8",

language = "English",

isbn = "9780387727677",

series = "Astrophysics and Space Science Proceedings",

publisher = "Springer Science and Business Media B.V.",

pages = "55--62",

editor = "Keiichi Wada and Francoise Combes",

booktitle = "Astrophysics and Space Science Proceedings",

}

TY - GEN

T1 - Structure and dynamics of the old galactic components

AU - Chiba, Masashi

AU - Hayashi, Hirohito

AU - Yamada, Motoko

PY - 2008

Y1 - 2008

N2 - We present here the recent progress in our understanding of the old stellar components of the Milky Way as fossil records of galaxy formation. Special attention will be paid to if the Cold Dark Matter (CDM) theory as a current theoretical paradigm is able to reproduce recently accumulated data sets of Galactic stars as provided by extensive surveys such as SDSS. We show our recent studies in this regard. First, we have simulated the dynamical interaction between a stellar disk and numerous CDM subhalos to get insights into the origin of the thin and thick disks. Second, we have analyzed the global dynamics of more than 1600 field horizontal branch stars as halo tracers to probe their velocity distribution inside the dark halo of the Milky Way. A detailed comparison with the CDM predictions has been made and key issues are addressed for understanding the formation of the Milky Way.

AB - We present here the recent progress in our understanding of the old stellar components of the Milky Way as fossil records of galaxy formation. Special attention will be paid to if the Cold Dark Matter (CDM) theory as a current theoretical paradigm is able to reproduce recently accumulated data sets of Galactic stars as provided by extensive surveys such as SDSS. We show our recent studies in this regard. First, we have simulated the dynamical interaction between a stellar disk and numerous CDM subhalos to get insights into the origin of the thin and thick disks. Second, we have analyzed the global dynamics of more than 1600 field horizontal branch stars as halo tracers to probe their velocity distribution inside the dark halo of the Milky Way. A detailed comparison with the CDM predictions has been made and key issues are addressed for understanding the formation of the Milky Way.

UR - http://www.scopus.com/inward/record.url?scp=85036615055&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85036615055&partnerID=8YFLogxK

U2 - 10.1007/978-0-387-72768-4_8

DO - 10.1007/978-0-387-72768-4_8

M3 - Conference contribution

AN - SCOPUS:85036615055

SN - 9780387727677

SN - 9780387876207

SN - 9781402055720

SN - 9781402069321

SN - 9781402088674

SN - 9781402091896

SN - 9781441981608

SN - 9781441983688

SN - 9783540758259

SN - 9783642033230

SN - 9783642103216

SN - 9783642103513

SN - 9783642113406

SN - 9783642172502

SN - 9789048133994

SN - 9789048134984

T3 - Astrophysics and Space Science Proceedings

SP - 55

EP - 62

BT - Astrophysics and Space Science Proceedings

A2 - Wada, Keiichi

A2 - Combes, Francoise

PB - Springer Science and Business Media B.V.

T2 - Symposium on Mapping the Galaxy and Nearby Galaxies, 2006

Y2 - 26 June 2006 through 30 June 2006

ER -

Structure and dynamics of the old galactic components

Abstract

Publication series

Other

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this