The Gaia -ESO Survey: Probes of the inner disk abundance gradient

H. R. Jacobson, E. D. Friel, L. Jílková, L. Magrini, A. Bragaglia, A. Vallenari, M. Tosi, S. Randich, P. Donati, T. Cantat-Gaudin, R. Sordo, R. Smiljanic, J. C. Overbeek, G. Carraro, G. Tautvaišiene, I. San Roman, S. Villanova, D. Geisler, C. Muñoz, F. Jiménez-EstebanB. Tang, G. Gilmore, E. J. Alfaro, T. Bensby, E. Flaccomio, S. E. Koposov, A. J. Korn, E. Pancino, A. Recio-Blanco, A. R. Casey, M. T. Costado, E. Franciosini, U. Heiter, V. Hill, A. Hourihane, C. Lardo, P. De Laverny, J. Lewis, L. Monaco, L. Morbidelli, G. G. Sacco, S. G. Sousa, C. C. Worley, S. Zaggia

Resultado de la investigación: Article

33 Citas (Scopus)

Resumen

Context. The nature of the metallicity gradient inside the solar circle (RGC < 8 kpc) is poorly understood, but studies of Cepheids and a small sample of open clusters suggest that it steepens in the inner disk. Aims. We investigate the metallicity gradient of the inner disk using a sample of inner disk open clusters that is three times larger than has previously been studied in the literature to better characterize the gradient in this part of the disk. Methods. We used the Gaia-ESO Survey (GES) [Fe/H] values and stellar parameters for stars in 12 open clusters in the inner disk from GES-UVES data. Cluster mean [Fe/H] values were determined based on a membership analysis for each cluster. Where necessary, distances and ages to clusters were determined via comparison to theoretical isochrones. Results. The GES open clusters exhibit a radial metallicity gradient of -0.10 ± 0.02 dex kpc-1, consistent with the gradient measured by other literature studies of field red giant stars and open clusters in the range RGC ~ 6-12 kpc. We also measure a trend of increasing [Fe/H] with increasing cluster age, as has also been found in the literature. Conclusions. We find no evidence for a steepening of the inner disk metallicity gradient inside the solar circle as earlier studies indicated. The age-metallicity relation shown by the clusters is consistent with that predicted by chemical evolution models that include the effects of radial migration, but a more detailed comparison between cluster observations and models would be premature.

Idioma originalEnglish
Número de artículoA37
PublicaciónAstronomy and Astrophysics
Volumen591
DOI
EstadoPublished - 1 ene 2016

Huella dactilar

European Southern Observatory
open clusters
metallicity
probe
gradients
probes
red giant stars
chemical evolution
star clusters
trends
stars
comparison

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

Citar esto

Jacobson, H. R., Friel, E. D., Jílková, L., Magrini, L., Bragaglia, A., Vallenari, A., ... Zaggia, S. (2016). The Gaia -ESO Survey: Probes of the inner disk abundance gradient. Astronomy and Astrophysics, 591, [A37]. https://doi.org/10.1051/0004-6361/201527654
Jacobson, H. R. ; Friel, E. D. ; Jílková, L. ; Magrini, L. ; Bragaglia, A. ; Vallenari, A. ; Tosi, M. ; Randich, S. ; Donati, P. ; Cantat-Gaudin, T. ; Sordo, R. ; Smiljanic, R. ; Overbeek, J. C. ; Carraro, G. ; Tautvaišiene, G. ; San Roman, I. ; Villanova, S. ; Geisler, D. ; Muñoz, C. ; Jiménez-Esteban, F. ; Tang, B. ; Gilmore, G. ; Alfaro, E. J. ; Bensby, T. ; Flaccomio, E. ; Koposov, S. E. ; Korn, A. J. ; Pancino, E. ; Recio-Blanco, A. ; Casey, A. R. ; Costado, M. T. ; Franciosini, E. ; Heiter, U. ; Hill, V. ; Hourihane, A. ; Lardo, C. ; De Laverny, P. ; Lewis, J. ; Monaco, L. ; Morbidelli, L. ; Sacco, G. G. ; Sousa, S. G. ; Worley, C. C. ; Zaggia, S. / The Gaia -ESO Survey : Probes of the inner disk abundance gradient. En: Astronomy and Astrophysics. 2016 ; Vol. 591.
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title = "The Gaia -ESO Survey: Probes of the inner disk abundance gradient",
abstract = "Context. The nature of the metallicity gradient inside the solar circle (RGC < 8 kpc) is poorly understood, but studies of Cepheids and a small sample of open clusters suggest that it steepens in the inner disk. Aims. We investigate the metallicity gradient of the inner disk using a sample of inner disk open clusters that is three times larger than has previously been studied in the literature to better characterize the gradient in this part of the disk. Methods. We used the Gaia-ESO Survey (GES) [Fe/H] values and stellar parameters for stars in 12 open clusters in the inner disk from GES-UVES data. Cluster mean [Fe/H] values were determined based on a membership analysis for each cluster. Where necessary, distances and ages to clusters were determined via comparison to theoretical isochrones. Results. The GES open clusters exhibit a radial metallicity gradient of -0.10 ± 0.02 dex kpc-1, consistent with the gradient measured by other literature studies of field red giant stars and open clusters in the range RGC ~ 6-12 kpc. We also measure a trend of increasing [Fe/H] with increasing cluster age, as has also been found in the literature. Conclusions. We find no evidence for a steepening of the inner disk metallicity gradient inside the solar circle as earlier studies indicated. The age-metallicity relation shown by the clusters is consistent with that predicted by chemical evolution models that include the effects of radial migration, but a more detailed comparison between cluster observations and models would be premature.",
keywords = "Galaxy: abundances, Galaxy: disk, Galaxy: formation, Stars: abundances",
author = "Jacobson, {H. R.} and Friel, {E. D.} and L. J{\'i}lkov{\'a} and L. Magrini and A. Bragaglia and A. Vallenari and M. Tosi and S. Randich and P. Donati and T. Cantat-Gaudin and R. Sordo and R. Smiljanic and Overbeek, {J. C.} and G. Carraro and G. Tautvaišiene and {San Roman}, I. and S. Villanova and D. Geisler and C. Mu{\~n}oz and F. Jim{\'e}nez-Esteban and B. Tang and G. Gilmore and Alfaro, {E. J.} and T. Bensby and E. Flaccomio and Koposov, {S. E.} and Korn, {A. J.} and E. Pancino and A. Recio-Blanco and Casey, {A. R.} and Costado, {M. T.} and E. Franciosini and U. Heiter and V. Hill and A. Hourihane and C. Lardo and {De Laverny}, P. and J. Lewis and L. Monaco and L. Morbidelli and Sacco, {G. G.} and Sousa, {S. G.} and Worley, {C. C.} and S. Zaggia",
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Jacobson, HR, Friel, ED, Jílková, L, Magrini, L, Bragaglia, A, Vallenari, A, Tosi, M, Randich, S, Donati, P, Cantat-Gaudin, T, Sordo, R, Smiljanic, R, Overbeek, JC, Carraro, G, Tautvaišiene, G, San Roman, I, Villanova, S, Geisler, D, Muñoz, C, Jiménez-Esteban, F, Tang, B, Gilmore, G, Alfaro, EJ, Bensby, T, Flaccomio, E, Koposov, SE, Korn, AJ, Pancino, E, Recio-Blanco, A, Casey, AR, Costado, MT, Franciosini, E, Heiter, U, Hill, V, Hourihane, A, Lardo, C, De Laverny, P, Lewis, J, Monaco, L, Morbidelli, L, Sacco, GG, Sousa, SG, Worley, CC & Zaggia, S 2016, 'The Gaia -ESO Survey: Probes of the inner disk abundance gradient', Astronomy and Astrophysics, vol. 591, A37. https://doi.org/10.1051/0004-6361/201527654

The Gaia -ESO Survey : Probes of the inner disk abundance gradient. / Jacobson, H. R.; Friel, E. D.; Jílková, L.; Magrini, L.; Bragaglia, A.; Vallenari, A.; Tosi, M.; Randich, S.; Donati, P.; Cantat-Gaudin, T.; Sordo, R.; Smiljanic, R.; Overbeek, J. C.; Carraro, G.; Tautvaišiene, G.; San Roman, I.; Villanova, S.; Geisler, D.; Muñoz, C.; Jiménez-Esteban, F.; Tang, B.; Gilmore, G.; Alfaro, E. J.; Bensby, T.; Flaccomio, E.; Koposov, S. E.; Korn, A. J.; Pancino, E.; Recio-Blanco, A.; Casey, A. R.; Costado, M. T.; Franciosini, E.; Heiter, U.; Hill, V.; Hourihane, A.; Lardo, C.; De Laverny, P.; Lewis, J.; Monaco, L.; Morbidelli, L.; Sacco, G. G.; Sousa, S. G.; Worley, C. C.; Zaggia, S.

En: Astronomy and Astrophysics, Vol. 591, A37, 01.01.2016.

Resultado de la investigación: Article

TY - JOUR

T1 - The Gaia -ESO Survey

T2 - Probes of the inner disk abundance gradient

AU - Jacobson, H. R.

AU - Friel, E. D.

AU - Jílková, L.

AU - Magrini, L.

AU - Bragaglia, A.

AU - Vallenari, A.

AU - Tosi, M.

AU - Randich, S.

AU - Donati, P.

AU - Cantat-Gaudin, T.

AU - Sordo, R.

AU - Smiljanic, R.

AU - Overbeek, J. C.

AU - Carraro, G.

AU - Tautvaišiene, G.

AU - San Roman, I.

AU - Villanova, S.

AU - Geisler, D.

AU - Muñoz, C.

AU - Jiménez-Esteban, F.

AU - Tang, B.

AU - Gilmore, G.

AU - Alfaro, E. J.

AU - Bensby, T.

AU - Flaccomio, E.

AU - Koposov, S. E.

AU - Korn, A. J.

AU - Pancino, E.

AU - Recio-Blanco, A.

AU - Casey, A. R.

AU - Costado, M. T.

AU - Franciosini, E.

AU - Heiter, U.

AU - Hill, V.

AU - Hourihane, A.

AU - Lardo, C.

AU - De Laverny, P.

AU - Lewis, J.

AU - Monaco, L.

AU - Morbidelli, L.

AU - Sacco, G. G.

AU - Sousa, S. G.

AU - Worley, C. C.

AU - Zaggia, S.

PY - 2016/1/1

Y1 - 2016/1/1

N2 - Context. The nature of the metallicity gradient inside the solar circle (RGC < 8 kpc) is poorly understood, but studies of Cepheids and a small sample of open clusters suggest that it steepens in the inner disk. Aims. We investigate the metallicity gradient of the inner disk using a sample of inner disk open clusters that is three times larger than has previously been studied in the literature to better characterize the gradient in this part of the disk. Methods. We used the Gaia-ESO Survey (GES) [Fe/H] values and stellar parameters for stars in 12 open clusters in the inner disk from GES-UVES data. Cluster mean [Fe/H] values were determined based on a membership analysis for each cluster. Where necessary, distances and ages to clusters were determined via comparison to theoretical isochrones. Results. The GES open clusters exhibit a radial metallicity gradient of -0.10 ± 0.02 dex kpc-1, consistent with the gradient measured by other literature studies of field red giant stars and open clusters in the range RGC ~ 6-12 kpc. We also measure a trend of increasing [Fe/H] with increasing cluster age, as has also been found in the literature. Conclusions. We find no evidence for a steepening of the inner disk metallicity gradient inside the solar circle as earlier studies indicated. The age-metallicity relation shown by the clusters is consistent with that predicted by chemical evolution models that include the effects of radial migration, but a more detailed comparison between cluster observations and models would be premature.

AB - Context. The nature of the metallicity gradient inside the solar circle (RGC < 8 kpc) is poorly understood, but studies of Cepheids and a small sample of open clusters suggest that it steepens in the inner disk. Aims. We investigate the metallicity gradient of the inner disk using a sample of inner disk open clusters that is three times larger than has previously been studied in the literature to better characterize the gradient in this part of the disk. Methods. We used the Gaia-ESO Survey (GES) [Fe/H] values and stellar parameters for stars in 12 open clusters in the inner disk from GES-UVES data. Cluster mean [Fe/H] values were determined based on a membership analysis for each cluster. Where necessary, distances and ages to clusters were determined via comparison to theoretical isochrones. Results. The GES open clusters exhibit a radial metallicity gradient of -0.10 ± 0.02 dex kpc-1, consistent with the gradient measured by other literature studies of field red giant stars and open clusters in the range RGC ~ 6-12 kpc. We also measure a trend of increasing [Fe/H] with increasing cluster age, as has also been found in the literature. Conclusions. We find no evidence for a steepening of the inner disk metallicity gradient inside the solar circle as earlier studies indicated. The age-metallicity relation shown by the clusters is consistent with that predicted by chemical evolution models that include the effects of radial migration, but a more detailed comparison between cluster observations and models would be premature.

KW - Galaxy: abundances

KW - Galaxy: disk

KW - Galaxy: formation

KW - Stars: abundances

UR - http://www.scopus.com/inward/record.url?scp=84974534206&partnerID=8YFLogxK

U2 - 10.1051/0004-6361/201527654

DO - 10.1051/0004-6361/201527654

M3 - Article

AN - SCOPUS:84974534206

VL - 591

JO - Astronomy and Astrophysics

JF - Astronomy and Astrophysics

SN - 0004-6361

M1 - A37

ER -

Jacobson HR, Friel ED, Jílková L, Magrini L, Bragaglia A, Vallenari A y otros. The Gaia -ESO Survey: Probes of the inner disk abundance gradient. Astronomy and Astrophysics. 2016 ene 1;591. A37. https://doi.org/10.1051/0004-6361/201527654