The Gaia-ESO Survey: Galactic evolution of sulphur and zinc

S. Duffau, E. Caffau, L. Sbordone, P. Bonifacio, S. Andrievsky, S. Korotin, C. Babusiaux, S. Salvadori, L. Monaco, P. François, Skúladóttir, A. Bragaglia, P. Donati, L. Spina, A. J. Gallagher, H. G. Ludwig, N. Christlieb, C. J. Hansen, A. Mott, M. SteffenS. Zaggia, S. Blanco-Cuaresma, F. Calura, E. Friel, F. M. Jiménez-Esteban, A. Koch, L. Magrini, E. Pancino, B. Tang, G. Tautvaišiene, A. Vallenari, K. Hawkins, G. Gilmore, S. Randich, S. Feltzing, T. Bensby, E. Flaccomio, R. Smiljanic, A. Bayo, G. Carraro, A. R. Casey, M. T. Costado, F. Damiani, E. Franciosini, A. Hourihane, P. Jofré, C. Lardo, J. Lewis, L. Morbidelli, S. G. Sousa, C. C. Worley

Resultado de la investigación: Article

10 Citas (Scopus)

Resumen

Context. Due to their volatile nature, when sulphur and zinc are observed in external galaxies, their determined abundances represent the gas-phase abundances in the interstellar medium. This implies that they can be used as tracers of the chemical enrichment of matter in the Universe at high redshift. Comparable observations in stars are more difficult and, until recently, plagued by small number statistics. Aims. We wish to exploit the Gaia-ESO Survey (GES) data to study the behaviour of sulphur and zinc abundances of a large number of Galactic stars, in a homogeneous way. Methods. By using the UVES spectra of the GES sample, we are able to assemble a sample of 1301 Galactic stars, including stars in open and globular clusters in which both sulphur and zinc were measured. Results. We confirm the results from the literature that sulphur behaves as an α-element. We find a large scatter in [Zn/Fe] ratios among giant stars around solar metallicity. The lower ratios are observed in giant stars at Galactocentric distances less than 7.5 kpc. No such effect is observed among dwarf stars, since they do not extend to that radius. Conclusions. Given the sample selection, giants and dwarfs are observed at different Galactic locations, and it is plausible, and compatible with simple calculations, that Zn-poor giants trace a younger population more polluted by SN Ia yields. It is necessary to extend observations in order to observe both giants and dwarfs at the same Galactic location. Further theoretical work on the evolution of zinc is also necessary.

Idioma originalEnglish
Número de artículoA128
PublicaciónAstronomy and Astrophysics
Volumen604
DOI
EstadoPublished - 1 ago 2017

Huella dactilar

galactic evolution
European Southern Observatory
sulfur
zinc
stars
giant stars
dwarf stars
young population
open clusters
globular clusters
metallicity
tracers
universe
tracer
statistics
vapor phases
galaxies
radii
gas

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

Citar esto

Duffau, S., Caffau, E., Sbordone, L., Bonifacio, P., Andrievsky, S., Korotin, S., ... Worley, C. C. (2017). The Gaia-ESO Survey: Galactic evolution of sulphur and zinc. Astronomy and Astrophysics, 604, [A128]. https://doi.org/10.1051/0004-6361/201730477
Duffau, S. ; Caffau, E. ; Sbordone, L. ; Bonifacio, P. ; Andrievsky, S. ; Korotin, S. ; Babusiaux, C. ; Salvadori, S. ; Monaco, L. ; François, P. ; Skúladóttir ; Bragaglia, A. ; Donati, P. ; Spina, L. ; Gallagher, A. J. ; Ludwig, H. G. ; Christlieb, N. ; Hansen, C. J. ; Mott, A. ; Steffen, M. ; Zaggia, S. ; Blanco-Cuaresma, S. ; Calura, F. ; Friel, E. ; Jiménez-Esteban, F. M. ; Koch, A. ; Magrini, L. ; Pancino, E. ; Tang, B. ; Tautvaišiene, G. ; Vallenari, A. ; Hawkins, K. ; Gilmore, G. ; Randich, S. ; Feltzing, S. ; Bensby, T. ; Flaccomio, E. ; Smiljanic, R. ; Bayo, A. ; Carraro, G. ; Casey, A. R. ; Costado, M. T. ; Damiani, F. ; Franciosini, E. ; Hourihane, A. ; Jofré, P. ; Lardo, C. ; Lewis, J. ; Morbidelli, L. ; Sousa, S. G. ; Worley, C. C. / The Gaia-ESO Survey : Galactic evolution of sulphur and zinc. En: Astronomy and Astrophysics. 2017 ; Vol. 604.
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title = "The Gaia-ESO Survey: Galactic evolution of sulphur and zinc",
abstract = "Context. Due to their volatile nature, when sulphur and zinc are observed in external galaxies, their determined abundances represent the gas-phase abundances in the interstellar medium. This implies that they can be used as tracers of the chemical enrichment of matter in the Universe at high redshift. Comparable observations in stars are more difficult and, until recently, plagued by small number statistics. Aims. We wish to exploit the Gaia-ESO Survey (GES) data to study the behaviour of sulphur and zinc abundances of a large number of Galactic stars, in a homogeneous way. Methods. By using the UVES spectra of the GES sample, we are able to assemble a sample of 1301 Galactic stars, including stars in open and globular clusters in which both sulphur and zinc were measured. Results. We confirm the results from the literature that sulphur behaves as an α-element. We find a large scatter in [Zn/Fe] ratios among giant stars around solar metallicity. The lower ratios are observed in giant stars at Galactocentric distances less than 7.5 kpc. No such effect is observed among dwarf stars, since they do not extend to that radius. Conclusions. Given the sample selection, giants and dwarfs are observed at different Galactic locations, and it is plausible, and compatible with simple calculations, that Zn-poor giants trace a younger population more polluted by SN Ia yields. It is necessary to extend observations in order to observe both giants and dwarfs at the same Galactic location. Further theoretical work on the evolution of zinc is also necessary.",
keywords = "Galaxy: abundances, Galaxy: disk, Galaxy: evolution, Globular clusters: general, Open clusters and associations: general, Stars: abundances",
author = "S. Duffau and E. Caffau and L. Sbordone and P. Bonifacio and S. Andrievsky and S. Korotin and C. Babusiaux and S. Salvadori and L. Monaco and P. Fran{\cc}ois and Sk{\'u}lad{\'o}ttir and A. Bragaglia and P. Donati and L. Spina and Gallagher, {A. J.} and Ludwig, {H. G.} and N. Christlieb and Hansen, {C. J.} and A. Mott and M. Steffen and S. Zaggia and S. Blanco-Cuaresma and F. Calura and E. Friel and Jim{\'e}nez-Esteban, {F. M.} and A. Koch and L. Magrini and E. Pancino and B. Tang and G. Tautvaišiene and A. Vallenari and K. Hawkins and G. Gilmore and S. Randich and S. Feltzing and T. Bensby and E. Flaccomio and R. Smiljanic and A. Bayo and G. Carraro and Casey, {A. R.} and Costado, {M. T.} and F. Damiani and E. Franciosini and A. Hourihane and P. Jofr{\'e} and C. Lardo and J. Lewis and L. Morbidelli and Sousa, {S. G.} and Worley, {C. C.}",
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Duffau, S, Caffau, E, Sbordone, L, Bonifacio, P, Andrievsky, S, Korotin, S, Babusiaux, C, Salvadori, S, Monaco, L, François, P, Skúladóttir, Bragaglia, A, Donati, P, Spina, L, Gallagher, AJ, Ludwig, HG, Christlieb, N, Hansen, CJ, Mott, A, Steffen, M, Zaggia, S, Blanco-Cuaresma, S, Calura, F, Friel, E, Jiménez-Esteban, FM, Koch, A, Magrini, L, Pancino, E, Tang, B, Tautvaišiene, G, Vallenari, A, Hawkins, K, Gilmore, G, Randich, S, Feltzing, S, Bensby, T, Flaccomio, E, Smiljanic, R, Bayo, A, Carraro, G, Casey, AR, Costado, MT, Damiani, F, Franciosini, E, Hourihane, A, Jofré, P, Lardo, C, Lewis, J, Morbidelli, L, Sousa, SG & Worley, CC 2017, 'The Gaia-ESO Survey: Galactic evolution of sulphur and zinc', Astronomy and Astrophysics, vol. 604, A128. https://doi.org/10.1051/0004-6361/201730477

The Gaia-ESO Survey : Galactic evolution of sulphur and zinc. / Duffau, S.; Caffau, E.; Sbordone, L.; Bonifacio, P.; Andrievsky, S.; Korotin, S.; Babusiaux, C.; Salvadori, S.; Monaco, L.; François, P.; Skúladóttir; Bragaglia, A.; Donati, P.; Spina, L.; Gallagher, A. J.; Ludwig, H. G.; Christlieb, N.; Hansen, C. J.; Mott, A.; Steffen, M.; Zaggia, S.; Blanco-Cuaresma, S.; Calura, F.; Friel, E.; Jiménez-Esteban, F. M.; Koch, A.; Magrini, L.; Pancino, E.; Tang, B.; Tautvaišiene, G.; Vallenari, A.; Hawkins, K.; Gilmore, G.; Randich, S.; Feltzing, S.; Bensby, T.; Flaccomio, E.; Smiljanic, R.; Bayo, A.; Carraro, G.; Casey, A. R.; Costado, M. T.; Damiani, F.; Franciosini, E.; Hourihane, A.; Jofré, P.; Lardo, C.; Lewis, J.; Morbidelli, L.; Sousa, S. G.; Worley, C. C.

En: Astronomy and Astrophysics, Vol. 604, A128, 01.08.2017.

Resultado de la investigación: Article

TY - JOUR

T1 - The Gaia-ESO Survey

T2 - Galactic evolution of sulphur and zinc

AU - Duffau, S.

AU - Caffau, E.

AU - Sbordone, L.

AU - Bonifacio, P.

AU - Andrievsky, S.

AU - Korotin, S.

AU - Babusiaux, C.

AU - Salvadori, S.

AU - Monaco, L.

AU - François, P.

AU - Skúladóttir,

AU - Bragaglia, A.

AU - Donati, P.

AU - Spina, L.

AU - Gallagher, A. J.

AU - Ludwig, H. G.

AU - Christlieb, N.

AU - Hansen, C. J.

AU - Mott, A.

AU - Steffen, M.

AU - Zaggia, S.

AU - Blanco-Cuaresma, S.

AU - Calura, F.

AU - Friel, E.

AU - Jiménez-Esteban, F. M.

AU - Koch, A.

AU - Magrini, L.

AU - Pancino, E.

AU - Tang, B.

AU - Tautvaišiene, G.

AU - Vallenari, A.

AU - Hawkins, K.

AU - Gilmore, G.

AU - Randich, S.

AU - Feltzing, S.

AU - Bensby, T.

AU - Flaccomio, E.

AU - Smiljanic, R.

AU - Bayo, A.

AU - Carraro, G.

AU - Casey, A. R.

AU - Costado, M. T.

AU - Damiani, F.

AU - Franciosini, E.

AU - Hourihane, A.

AU - Jofré, P.

AU - Lardo, C.

AU - Lewis, J.

AU - Morbidelli, L.

AU - Sousa, S. G.

AU - Worley, C. C.

PY - 2017/8/1

Y1 - 2017/8/1

N2 - Context. Due to their volatile nature, when sulphur and zinc are observed in external galaxies, their determined abundances represent the gas-phase abundances in the interstellar medium. This implies that they can be used as tracers of the chemical enrichment of matter in the Universe at high redshift. Comparable observations in stars are more difficult and, until recently, plagued by small number statistics. Aims. We wish to exploit the Gaia-ESO Survey (GES) data to study the behaviour of sulphur and zinc abundances of a large number of Galactic stars, in a homogeneous way. Methods. By using the UVES spectra of the GES sample, we are able to assemble a sample of 1301 Galactic stars, including stars in open and globular clusters in which both sulphur and zinc were measured. Results. We confirm the results from the literature that sulphur behaves as an α-element. We find a large scatter in [Zn/Fe] ratios among giant stars around solar metallicity. The lower ratios are observed in giant stars at Galactocentric distances less than 7.5 kpc. No such effect is observed among dwarf stars, since they do not extend to that radius. Conclusions. Given the sample selection, giants and dwarfs are observed at different Galactic locations, and it is plausible, and compatible with simple calculations, that Zn-poor giants trace a younger population more polluted by SN Ia yields. It is necessary to extend observations in order to observe both giants and dwarfs at the same Galactic location. Further theoretical work on the evolution of zinc is also necessary.

AB - Context. Due to their volatile nature, when sulphur and zinc are observed in external galaxies, their determined abundances represent the gas-phase abundances in the interstellar medium. This implies that they can be used as tracers of the chemical enrichment of matter in the Universe at high redshift. Comparable observations in stars are more difficult and, until recently, plagued by small number statistics. Aims. We wish to exploit the Gaia-ESO Survey (GES) data to study the behaviour of sulphur and zinc abundances of a large number of Galactic stars, in a homogeneous way. Methods. By using the UVES spectra of the GES sample, we are able to assemble a sample of 1301 Galactic stars, including stars in open and globular clusters in which both sulphur and zinc were measured. Results. We confirm the results from the literature that sulphur behaves as an α-element. We find a large scatter in [Zn/Fe] ratios among giant stars around solar metallicity. The lower ratios are observed in giant stars at Galactocentric distances less than 7.5 kpc. No such effect is observed among dwarf stars, since they do not extend to that radius. Conclusions. Given the sample selection, giants and dwarfs are observed at different Galactic locations, and it is plausible, and compatible with simple calculations, that Zn-poor giants trace a younger population more polluted by SN Ia yields. It is necessary to extend observations in order to observe both giants and dwarfs at the same Galactic location. Further theoretical work on the evolution of zinc is also necessary.

KW - Galaxy: abundances

KW - Galaxy: disk

KW - Galaxy: evolution

KW - Globular clusters: general

KW - Open clusters and associations: general

KW - Stars: abundances

UR - http://www.scopus.com/inward/record.url?scp=85028535305&partnerID=8YFLogxK

U2 - 10.1051/0004-6361/201730477

DO - 10.1051/0004-6361/201730477

M3 - Article

AN - SCOPUS:85028535305

VL - 604

JO - Astronomy and Astrophysics

JF - Astronomy and Astrophysics

SN - 0004-6361

M1 - A128

ER -

Duffau S, Caffau E, Sbordone L, Bonifacio P, Andrievsky S, Korotin S y otros. The Gaia-ESO Survey: Galactic evolution of sulphur and zinc. Astronomy and Astrophysics. 2017 ago 1;604. A128. https://doi.org/10.1051/0004-6361/201730477