A spectroscopy-based age-metallicity relation of the SMC

Andrea Kayser; Eva K. Grebel; Daniel R. Harbeck; Andrew A. Cole; Andreas Koch; Katharina Glatt; John S. Gallagher; Gary S. Da Costa

doi:10.1017/S1743921307008411

A spectroscopy-based age-metallicity relation of the SMC

Andrea Kayser^*, Eva K. Grebel, Daniel R. Harbeck, Andrew A. Cole, Andreas Koch, Katharina Glatt, John S. Gallagher, Gary S. Da Costa

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

The Small Magellanic Cloud (SMC) is the only dwarf galaxy in the Local Group that is known to have formed and preserved populous star clusters continuously over the past 12 Gyr. Due to its proximity ( 60 kpc), stars can be resolved well below the oldest main sequence turnoff points. This facilitates accurate age and metallicity determinations without suffering from the age-metallicity degeneracy. Therefore, the SMC star clusters provide a unique closely spaced set of single-age, single-metallicity tracers to derive a well-sampled age-metallicity relation required for the understanding of the star formation history of this satellite galaxy. Up to date spectroscopically based metallicity estimates exist only for the small number of 7 clusters (Da Costa & Hatzidimitriou 1998). Our project now more than doubles the available data set by the observation of 10 additional clusters.

Original language	English
Pages (from-to)	351-352
Number of pages	2
Journal	Proceedings of the International Astronomical Union
Volume	2
Issue number	S241
DOIs	https://doi.org/10.1017/S1743921307008411
Publication status	Published - Dec 2006

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title = "A spectroscopy-based age-metallicity relation of the SMC",

abstract = "The Small Magellanic Cloud (SMC) is the only dwarf galaxy in the Local Group that is known to have formed and preserved populous star clusters continuously over the past 12 Gyr. Due to its proximity ( 60 kpc), stars can be resolved well below the oldest main sequence turnoff points. This facilitates accurate age and metallicity determinations without suffering from the age-metallicity degeneracy. Therefore, the SMC star clusters provide a unique closely spaced set of single-age, single-metallicity tracers to derive a well-sampled age-metallicity relation required for the understanding of the star formation history of this satellite galaxy. Up to date spectroscopically based metallicity estimates exist only for the small number of 7 clusters (Da Costa & Hatzidimitriou 1998). Our project now more than doubles the available data set by the observation of 10 additional clusters.",

author = "Andrea Kayser and Grebel, {Eva K.} and Harbeck, {Daniel R.} and Cole, {Andrew A.} and Andreas Koch and Katharina Glatt and Gallagher, {John S.} and {Da Costa}, {Gary S.}",

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language = "English",

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pages = "351--352",

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TY - JOUR

T1 - A spectroscopy-based age-metallicity relation of the SMC

AU - Kayser, Andrea

AU - Grebel, Eva K.

AU - Harbeck, Daniel R.

AU - Cole, Andrew A.

AU - Koch, Andreas

AU - Glatt, Katharina

AU - Gallagher, John S.

AU - Da Costa, Gary S.

PY - 2006/12

Y1 - 2006/12

N2 - The Small Magellanic Cloud (SMC) is the only dwarf galaxy in the Local Group that is known to have formed and preserved populous star clusters continuously over the past 12 Gyr. Due to its proximity ( 60 kpc), stars can be resolved well below the oldest main sequence turnoff points. This facilitates accurate age and metallicity determinations without suffering from the age-metallicity degeneracy. Therefore, the SMC star clusters provide a unique closely spaced set of single-age, single-metallicity tracers to derive a well-sampled age-metallicity relation required for the understanding of the star formation history of this satellite galaxy. Up to date spectroscopically based metallicity estimates exist only for the small number of 7 clusters (Da Costa & Hatzidimitriou 1998). Our project now more than doubles the available data set by the observation of 10 additional clusters.

AB - The Small Magellanic Cloud (SMC) is the only dwarf galaxy in the Local Group that is known to have formed and preserved populous star clusters continuously over the past 12 Gyr. Due to its proximity ( 60 kpc), stars can be resolved well below the oldest main sequence turnoff points. This facilitates accurate age and metallicity determinations without suffering from the age-metallicity degeneracy. Therefore, the SMC star clusters provide a unique closely spaced set of single-age, single-metallicity tracers to derive a well-sampled age-metallicity relation required for the understanding of the star formation history of this satellite galaxy. Up to date spectroscopically based metallicity estimates exist only for the small number of 7 clusters (Da Costa & Hatzidimitriou 1998). Our project now more than doubles the available data set by the observation of 10 additional clusters.

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DO - 10.1017/S1743921307008411

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JO - Proceedings of the International Astronomical Union

JF - Proceedings of the International Astronomical Union

IS - S241

ER -

A spectroscopy-based age-metallicity relation of the SMC

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