High resolution spectroscopy of Red Giant Branch stars and the chemical evolution of the Fornax dwarf spheroidal galaxy

B. Lemasle; T. J. L. de Boer; V. Hill; E. Tolstoy; M. J. Irwin; P. Jablonka; K. Venn; G. Battaglia; E. Starkenburg; M. Shetrone; B. Letarte; P. Francois; A. Helmi; F. Primas; A. Kaufer; T. Szeifert

High resolution spectroscopy of Red Giant Branch stars and the chemical evolution of the Fornax dwarf spheroidal galaxy

B. Lemasle, T. J. L. de Boer, V. Hill, E. Tolstoy, M. J. Irwin, P. Jablonka, K. Venn, G. Battaglia, E. Starkenburg, M. Shetrone, B. Letarte, P. Francois, A. Helmi, F. Primas, A. Kaufer, T. Szeifert

Astronomy

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

Abstract

From VLT-FLAMES high-resolution spectra, we determine the abundances of several α, iron-peak and neutron-capture elements in 47 Red Giant Branch stars in the Fornax dwarf spheroidal galaxy. We confirm that SNe Ia started to contribute to the chemical enrichment of Fornax at [Fe/H] between --2.0 and --1.8 dex. Combining these abundances with accurate age estimates, we date the onset of SNe Ia to ≈ 12--10 Gyrs ago. Our results are compatible with an initial mass function that lacks the most massive stars and with a star formation going on throughout the whole history of Fornax.

Original language	English
Title of host publication	SF2A-2014
Subtitle of host publication	Proceedings of the Annual meeting of the French Society of Astronomy and Astrophysics
Editors	J. Ballet, F. Martins, F. Bournaud, R. Monier, C. Reylé
Pages	337-340
Publication status	Published - 1-Dec-2014

Keywords

stars: abundances
galaxies: individual: Fornax dwarf spheroidal
galaxies: evolution

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http://sf2a.eu/proceedings/2014/2014sf2a.conf..0337L.pdf

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Lemasle, B., de Boer, T. J. L., Hill, V., Tolstoy, E., Irwin, M. J., Jablonka, P., Venn, K., Battaglia, G., Starkenburg, E., Shetrone, M., Letarte, B., Francois, P., Helmi, A., Primas, F., Kaufer, A., & Szeifert, T. (2014). High resolution spectroscopy of Red Giant Branch stars and the chemical evolution of the Fornax dwarf spheroidal galaxy. In J. Ballet, F. Martins, F. Bournaud, R. Monier, & C. Reylé (Eds.), SF2A-2014: Proceedings of the Annual meeting of the French Society of Astronomy and Astrophysics (pp. 337-340) http://sf2a.eu/proceedings/2014/2014sf2a.conf..0337L.pdf

@inproceedings{4f6c2e6836234ffd888af8822eabba66,

title = "High resolution spectroscopy of Red Giant Branch stars and the chemical evolution of the Fornax dwarf spheroidal galaxy",

abstract = "From VLT-FLAMES high-resolution spectra, we determine the abundances of several α, iron-peak and neutron-capture elements in 47 Red Giant Branch stars in the Fornax dwarf spheroidal galaxy. We confirm that SNe Ia started to contribute to the chemical enrichment of Fornax at [Fe/H] between --2.0 and --1.8 dex. Combining these abundances with accurate age estimates, we date the onset of SNe Ia to ≈ 12--10 Gyrs ago. Our results are compatible with an initial mass function that lacks the most massive stars and with a star formation going on throughout the whole history of Fornax.",

keywords = "stars: abundances, galaxies: individual: Fornax dwarf spheroidal, galaxies: evolution",

author = "B. Lemasle and {de Boer}, {T. J. L.} and V. Hill and E. Tolstoy and Irwin, {M. J.} and P. Jablonka and K. Venn and G. Battaglia and E. Starkenburg and M. Shetrone and B. Letarte and P. Francois and A. Helmi and F. Primas and A. Kaufer and T. Szeifert",

year = "2014",

month = dec,

day = "1",

language = "English",

pages = "337--340",

editor = "J. Ballet and F. Martins and F. Bournaud and R. Monier and C. Reyl{\'e}",

booktitle = "SF2A-2014",

}

Lemasle, B, de Boer, TJL, Hill, V, Tolstoy, E, Irwin, MJ, Jablonka, P, Venn, K, Battaglia, G, Starkenburg, E, Shetrone, M, Letarte, B, Francois, P, Helmi, A, Primas, F, Kaufer, A & Szeifert, T 2014, High resolution spectroscopy of Red Giant Branch stars and the chemical evolution of the Fornax dwarf spheroidal galaxy. in J Ballet, F Martins, F Bournaud, R Monier & C Reylé (eds), SF2A-2014: Proceedings of the Annual meeting of the French Society of Astronomy and Astrophysics. pp. 337-340. <http://sf2a.eu/proceedings/2014/2014sf2a.conf..0337L.pdf>

High resolution spectroscopy of Red Giant Branch stars and the chemical evolution of the Fornax dwarf spheroidal galaxy. / Lemasle, B.; de Boer, T. J. L.; Hill, V. et al.
SF2A-2014: Proceedings of the Annual meeting of the French Society of Astronomy and Astrophysics. ed. / J. Ballet; F. Martins; F. Bournaud; R. Monier; C. Reylé. 2014. p. 337-340.

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

TY - GEN

T1 - High resolution spectroscopy of Red Giant Branch stars and the chemical evolution of the Fornax dwarf spheroidal galaxy

AU - Lemasle, B.

AU - de Boer, T. J. L.

AU - Hill, V.

AU - Tolstoy, E.

AU - Irwin, M. J.

AU - Jablonka, P.

AU - Venn, K.

AU - Battaglia, G.

AU - Starkenburg, E.

AU - Shetrone, M.

AU - Letarte, B.

AU - Francois, P.

AU - Helmi, A.

AU - Primas, F.

AU - Kaufer, A.

AU - Szeifert, T.

PY - 2014/12/1

Y1 - 2014/12/1

N2 - From VLT-FLAMES high-resolution spectra, we determine the abundances of several α, iron-peak and neutron-capture elements in 47 Red Giant Branch stars in the Fornax dwarf spheroidal galaxy. We confirm that SNe Ia started to contribute to the chemical enrichment of Fornax at [Fe/H] between --2.0 and --1.8 dex. Combining these abundances with accurate age estimates, we date the onset of SNe Ia to ≈ 12--10 Gyrs ago. Our results are compatible with an initial mass function that lacks the most massive stars and with a star formation going on throughout the whole history of Fornax.

AB - From VLT-FLAMES high-resolution spectra, we determine the abundances of several α, iron-peak and neutron-capture elements in 47 Red Giant Branch stars in the Fornax dwarf spheroidal galaxy. We confirm that SNe Ia started to contribute to the chemical enrichment of Fornax at [Fe/H] between --2.0 and --1.8 dex. Combining these abundances with accurate age estimates, we date the onset of SNe Ia to ≈ 12--10 Gyrs ago. Our results are compatible with an initial mass function that lacks the most massive stars and with a star formation going on throughout the whole history of Fornax.

KW - stars: abundances

KW - galaxies: individual: Fornax dwarf spheroidal

KW - galaxies: evolution

M3 - Conference contribution

SP - 337

EP - 340

BT - SF2A-2014

A2 - Ballet, J.

A2 - Martins, F.

A2 - Bournaud, F.

A2 - Monier, R.

A2 - Reylé, C.

ER -

Lemasle B, de Boer TJL, Hill V, Tolstoy E, Irwin MJ, Jablonka P et al. High resolution spectroscopy of Red Giant Branch stars and the chemical evolution of the Fornax dwarf spheroidal galaxy. In Ballet J, Martins F, Bournaud F, Monier R, Reylé C, editors, SF2A-2014: Proceedings of the Annual meeting of the French Society of Astronomy and Astrophysics. 2014. p. 337-340

High resolution spectroscopy of Red Giant Branch stars and the chemical evolution of the Fornax dwarf spheroidal galaxy

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Keywords

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