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1. The Gaia-ESO Public Spectroscopic Survey: Implementation, data products, open cluster survey, science, and legacy

Author

Randich, S., primary, Gilmore, G., additional, Magrini, L., additional, Sacco, G. G., additional, Jackson, R. J., additional, Jeffries, R. D., additional, Worley, C. C., additional, Hourihane, A., additional, Gonneau, A., additional, Viscasillas Vazquez, C., additional, Franciosini, E., additional, Lewis, J. R., additional, Alfaro, E. J., additional, Allende Prieto, C., additional, Bensby, T., additional, Blomme, R., additional, Bragaglia, A., additional, Flaccomio, E., additional, François, P., additional, Irwin, M. J., additional, Koposov, S. E., additional, Korn, A. J., additional, Lanzafame, A. C., additional, Pancino, E., additional, Recio-Blanco, A., additional, Smiljanic, R., additional, Van Eck, S., additional, Zwitter, T., additional, Asplund, M., additional, Bonifacio, P., additional, Feltzing, S., additional, Binney, J., additional, Drew, J., additional, Ferguson, A. M. N., additional, Micela, G., additional, Negueruela, I., additional, Prusti, T., additional, Rix, H.-W., additional, Vallenari, A., additional, Bayo, A., additional, Bergemann, M., additional, Biazzo, K., additional, Carraro, G., additional, Casey, A. R., additional, Damiani, F., additional, Frasca, A., additional, Heiter, U., additional, Hill, V., additional, Jofré, P., additional, de Laverny, P., additional, Lind, K., additional, Marconi, G., additional, Martayan, C., additional, Masseron, T., additional, Monaco, L., additional, Morbidelli, L., additional, Prisinzano, L., additional, Sbordone, L., additional, Sousa, S. G., additional, Zaggia, S., additional, Adibekyan, V., additional, Bonito, R., additional, Caffau, E., additional, Daflon, S., additional, Feuillet, D. K., additional, Gebran, M., additional, Gonzalez Hernandez, J. I., additional, Guiglion, G., additional, Herrero, A., additional, Lobel, A., additional, Maiz Apellaniz, J., additional, Merle, T., additional, Mikolaitis, Š., additional, Montes, D., additional, Morel, T., additional, Soubiran, C., additional, Spina, L., additional, Tabernero, H. M., additional, Tautvaišiene, G., additional, Traven, G., additional, Valentini, M., additional, Van der Swaelmen, M., additional, Villanova, S., additional, Wright, N. J., additional, Abbas, U., additional, Aguirre Børsen-Koch, V., additional, Alves, J., additional, Balaguer-Nunez, L., additional, Barklem, P. S., additional, Barrado, D., additional, Berlanas, S. R., additional, Binks, A. S., additional, Bressan, A., additional, Capuzzo-Dolcetta, R., additional, Casagrande, L., additional, Casamiquela, L., additional, Collins, R. S., additional, D'Orazi, V., additional, Dantas, M. L. L., additional, Debattista, V. P., additional, Delgado-Mena, E., additional, Di Marcantonio, P., additional, Drazdauskas, A., additional, Evans, N. W., additional, Famaey, B., additional, Franchini, M., additional, Frémat, Y., additional, Friel, E. D., additional, Fu, X., additional, Geisler, D., additional, Gerhard, O., additional, Gonzalez Solares, E. A., additional, Grebel, E. K., additional, Gutierrez Albarran, M. L., additional, Hatzidimitriou, D., additional, Held, E. V., additional, Jiménez-Esteban, F., additional, Jönsson, H., additional, Jordi, C., additional, Khachaturyants, T., additional, Kordopatis, G., additional, Kos, J., additional, Lagarde, N., additional, Mahy, L., additional, Mapelli, M., additional, Marfil, E., additional, Martell, S. L., additional, Messina, S., additional, Miglio, A., additional, Minchev, I., additional, Moitinho, A., additional, Montalban, J., additional, Monteiro, M. J. P. F. G., additional, Morossi, C., additional, Mowlavi, N., additional, Mucciarelli, A., additional, Murphy, D. N. A., additional, Nardetto, N., additional, Ortolani, S., additional, Paletou, F., additional, Palouš, J., additional, Paunzen, E., additional, Pickering, J. C., additional, Quirrenbach, A., additional, Re Fiorentin, P., additional, Read, J. I., additional, Romano, D., additional, Ryde, N., additional, Sanna, N., additional, Santos, W., additional, Seabroke, G. M., additional, Spagna, A., additional, Steinmetz, M., additional, Stonkuté, E., additional, Sutorius, E., additional, Thévenin, F., additional, Tosi, M., additional, Tsantaki, M., additional, Vink, J. S., additional, Wright, N., additional, Wyse, R. F. G., additional, Zoccali, M., additional, Zorec, J., additional, Zucker, D. B., additional, and Walton, N. A., additional

Published
2022
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2. The Gaia-ESO Public Spectroscopic Survey: Motivation, implementation, GIRAFFE data processing, analysis, and final data products

Author

Gilmore, G., primary, Randich, S., additional, Worley, C. C., additional, Hourihane, A., additional, Gonneau, A., additional, Sacco, G. G., additional, Lewis, J. R., additional, Magrini, L., additional, François, P., additional, Jeffries, R. D., additional, Koposov, S. E., additional, Bragaglia, A., additional, Alfaro, E. J., additional, Allende Prieto, C., additional, Blomme, R., additional, Korn, A. J., additional, Lanzafame, A. C., additional, Pancino, E., additional, Recio-Blanco, A., additional, Smiljanic, R., additional, Van Eck, S., additional, Zwitter, T., additional, Bensby, T., additional, Flaccomio, E., additional, Irwin, M. J., additional, Franciosini, E., additional, Morbidelli, L., additional, Damiani, F., additional, Bonito, R., additional, Friel, E. D., additional, Vink, J. S., additional, Prisinzano, L., additional, Abbas, U., additional, Hatzidimitriou, D., additional, Held, E. V., additional, Jordi, C., additional, Paunzen, E., additional, Spagna, A., additional, Jackson, R. J., additional, Maíz Apellániz, J., additional, Asplund, M., additional, Bonifacio, P., additional, Feltzing, S., additional, Binney, J., additional, Drew, J., additional, Ferguson, A. M. N., additional, Micela, G., additional, Negueruela, I., additional, Prusti, T., additional, Rix, H.-W., additional, Vallenari, A., additional, Bergemann, M., additional, Casey, A. R., additional, de Laverny, P., additional, Frasca, A., additional, Hill, V., additional, Lind, K., additional, Sbordone, L., additional, Sousa, S. G., additional, Adibekyan, V., additional, Caffau, E., additional, Daflon, S., additional, Feuillet, D. K., additional, Gebran, M., additional, Gonzalez Hernandez, J. I., additional, Guiglion, G., additional, Herrero, A., additional, Lobel, A., additional, Merle, T., additional, Mikolaitis, Š., additional, Montes, D., additional, Morel, T., additional, Ruchti, G., additional, Soubiran, C., additional, Tabernero, H. M., additional, Tautvaišienė, G., additional, Traven, G., additional, Valentini, M., additional, Van der Swaelmen, M., additional, Villanova, S., additional, Viscasillas Vázquez, C., additional, Bayo, A., additional, Biazzo, K., additional, Carraro, G., additional, Edvardsson, B., additional, Heiter, U., additional, Jofré, P., additional, Marconi, G., additional, Martayan, C., additional, Masseron, T., additional, Monaco, L., additional, Walton, N. A., additional, Zaggia, S., additional, Aguirre Børsen-Koch, V., additional, Alves, J., additional, Balaguer-Nunez, L., additional, Barklem, P. S., additional, Barrado, D., additional, Bellazzini, M., additional, Berlanas, S. R., additional, Binks, A. S., additional, Bressan, A., additional, Capuzzo-Dolcetta, R., additional, Casagrande, L., additional, Casamiquela, L., additional, Collins, R. S., additional, D'Orazi, V., additional, Dantas, M. L. L., additional, Debattista, V. P., additional, Delgado-Mena, E., additional, Di Marcantonio, P., additional, Drazdauskas, A., additional, Evans, N. W., additional, Famaey, B., additional, Franchini, M., additional, Frémat, Y., additional, Fu, X., additional, Geisler, D., additional, Gerhard, O., additional, González Solares, E. A., additional, Grebel, E. K., additional, Gutiérrez Albarrán, M. L., additional, Jiménez-Esteban, F., additional, Jönsson, H., additional, Khachaturyants, T., additional, Kordopatis, G., additional, Kos, J., additional, Lagarde, N., additional, Ludwig, H.-G., additional, Mahy, L., additional, Mapelli, M., additional, Marfil, E., additional, Martell, S. L., additional, Messina, S., additional, Miglio, A., additional, Minchev, I., additional, Moitinho, A., additional, Montalban, J., additional, Monteiro, M. J. P. F. G., additional, Morossi, C., additional, Mowlavi, N., additional, Mucciarelli, A., additional, Murphy, D. N. A., additional, Nardetto, N., additional, Ortolani, S., additional, Paletou, F., additional, Palouš, J., additional, Pickering, J. C., additional, Quirrenbach, A., additional, Re Fiorentin, P., additional, Read, J. I., additional, Romano, D., additional, Ryde, N., additional, Sanna, N., additional, Santos, W., additional, Seabroke, G. M., additional, Spina, L., additional, Steinmetz, M., additional, Stonkuté, E., additional, Sutorius, E., additional, Thévenin, F., additional, Tosi, M., additional, Tsantaki, M., additional, Wright, N., additional, Wyse, R. F. G., additional, Zoccali, M., additional, Zorec, J., additional, and Zucker, D. B., additional

Published
2022
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3. The Gaia-ESO Public Spectroscopic Survey: Motivation, implementation, GIRAFFE data processing, analysis, and final data products

Author

Ministerio de Ciencia e Innovación (España), European Commission, European Research Council, German Research Foundation, Gilmore, Gerry, Alfaro, Emilio J., Tabernero, H. M., Barrado, D., Jiménez-Esteban, F., Marfil, E., Zucker, D. B., Ministerio de Ciencia e Innovación (España), European Commission, European Research Council, German Research Foundation, Gilmore, Gerry, Alfaro, Emilio J., Tabernero, H. M., Barrado, D., Jiménez-Esteban, F., Marfil, E., and Zucker, D. B.

Abstract

Context. The Gaia-ESO Public Spectroscopic Survey is an ambitious project designed to obtain astrophysical parameters and elemental abundances for 100 000 stars, including large representative samples of the stellar populations in the Galaxy, and a well-defined sample of 60 (plus 20 archive) open clusters. We provide internally consistent results calibrated on benchmark stars and star clusters, extending across a very wide range of abundances and ages. This provides a legacy data set of intrinsic value, and equally a large wide-ranging dataset that is of value for the homogenisation of other and future stellar surveys and Gaia's astrophysical parameters. Aims. This article provides an overview of the survey methodology, the scientific aims, and the implementation, including a description of the data processing for the GIRAFFE spectra. A companion paper introduces the survey results. Methods. Gaia-ESO aspires to quantify both random and systematic contributions to measurement uncertainties. Thus, all available spectroscopic analysis techniques are utilised, each spectrum being analysed by up to several different analysis pipelines, with considerable effort being made to homogenise and calibrate the resulting parameters. We describe here the sequence of activities up to delivery of processed data products to the ESO Science Archive Facility for open use. Results. The Gaia-ESO Survey obtained 202 000 spectra of 115 000 stars using 340 allocated VLT nights between December 2011 and January 2018 from GIRAFFE and UVES. © G. Gilmore et al. 2022. Conclusions. The full consistently reduced final data set of spectra was released through the ESO Science Archive Facility in late 2020, with the full astrophysical parameters sets following in 2022. A companion article reviews the survey implementation, scientific highlights, the open cluster survey, and data products.

Published
2022

4. The GALAH survey: multiple stars and our Galaxy

Author

Traven, G., primary, Feltzing, S., additional, Merle, T., additional, Van der Swaelmen, M., additional, Čotar, K., additional, Church, R., additional, Zwitter, T., additional, Ting, Y.-S., additional, Sahlholdt, C., additional, Asplund, M., additional, Bland-Hawthorn, J., additional, De Silva, G., additional, Freeman, K., additional, Martell, S., additional, Sharma, S., additional, Zucker, D., additional, Buder, S., additional, Casey, A., additional, D’Orazi, V., additional, Kos, J., additional, Lewis, G., additional, Lin, J., additional, Lind, K., additional, Simpson, J., additional, Stello, D., additional, Munari, U., additional, and Wittenmyer, R. A., additional

Published
2020
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5. The GALAH survey: An abundance, age, and kinematic inventory of the solar neighbourhood made with TGAS.

Author

Buder, S., Lind, K., Ness, M. K., Asplund, M., Duong, L., Lin, J., Kos, J., Casagrande, L., Casey, A. R., Bland-Hawthorn, J., De Silva, G. M., D'Orazi, V., Freeman, K. C., Martell, S. L., Schlesinger, K. J., Sharma, S., Simpson, J. D., Zucker, D. B., Zwitter, T., and Čotar, K.

Subjects
ALKALINE earth metals, STELLAR spectra, NEIGHBORHOODS, STELLAR mass, PARALLAX, ASTROMETRY
Abstract

The overlap between the spectroscopic Galactic Archaeology with HERMES (GALAH) survey and Gaia provides a high-dimensional chemodynamical space of unprecedented size. We present a first analysis of a subset of this overlap, of 7066 dwarf, turn-off, and sub-giant stars. These stars have spectra from the GALAH survey and high parallax precision from the Gaia DR1 Tycho-Gaia Astrometric Solution. We investigate correlations between chemical compositions, ages, and kinematics for this sample. Stellar parameters and elemental abundances are derived from the GALAH spectra with the spectral synthesis code SPECTROSCOPY MADE EASY. We determine kinematics and dynamics, including action angles, from the Gaia astrometry and GALAH radial velocities. Stellar masses and ages are determined with Bayesian isochrone matching, using our derived stellar parameters and absolute magnitudes. We report measurements of Li, C, O, Na, Mg, Al, Si, K, Ca, Sc, Ti, V, Cr, Mn, Co, Ni, Cu, Zn, Y, as well as Ba and we note that we have employed non-LTE calculations for Li, O, Al, and Fe. We show that the use of astrometric and photometric data improves the accuracy of the derived spectroscopic parameters, especially log g. Focusing our investigation on the correlations between stellar age, iron abundance [Fe/H], and mean alpha-enhancement [α/Fe] of the magnitude-selected sample, we recover the result that stars of the high-α sequence are typically older than stars in the low-α sequence, the latter spanning iron abundances of −0.7 <  [Fe/H] <  +0.5. While these two sequences become indistinguishable in [α/Fe] vs. [Fe/H] at the metal-rich regime, we find that age can be used to separate stars from the extended high-α and the low-α sequence even in this regime. When dissecting the sample by stellar age, we find that the old stars (>8 Gyr) have lower angular momenta Lz than the Sun, which implies that they are on eccentric orbits and originate from the inner disc. Contrary to some previous smaller scale studies we find a continuous evolution in the high-α-sequence up to super-solar [Fe/H] rather than a gap, which has been interpreted as a separate "high-α metal-rich" population. Stars in our sample that are younger than 10 Gyr, are mainly found on the low α-sequence and show a gradient in Lz from low [Fe/H] (Lz >  Lz, ⊙) towards higher [Fe/H] (Lz <  Lz, ⊙), which implies that the stars at the ends of this sequence are likely not originating from the close solar vicinity. [ABSTRACT FROM AUTHOR]

Published
2019
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