The Gaia-ESO Survey: Calibration strategy

E. Pancino; C. Lardo; G. Altavilla; S. Marinoni; S. Ragaini; G. Cocozza; M. Bellazzini; E. Sabbi; M. Zoccali; P. Donati; U. Heiter; S. E. Koposov; R. Blomme; T. Morel; S. Símon-Díaz; A. Lobel; C. Soubiran; J. Montalban; M. Valentini; A. R. Casey; S. Blanco-Cuaresma; P. Jofré; C. C. Worley; L. Magrini; A. Hourihane; P. François; S. Feltzing; G. Gilmore; S. Randich; M. Asplund; P. Bonifacio; J. E. Drew; R. D. Jeffries; G. Micela; A. Vallenari; E. J. Alfaro; C. Allende Prieto; C. Babusiaux; T. Bensby; A. Bragaglia; E. Flaccomio; N. Hambly; A. J. Korn; A. C. Lanzafame; R. Smiljanic; S. Van Eck; N. A. Walton; A. Bayo; G. Carraro; M. T. Costado; F. Damiani; B. Edvardsson; E. Franciosini; A. Frasca; J. Lewis; L. Monaco; L. Morbidelli; L. Prisinzano; G. G. Sacco; L. Sbordone; S. G. Sousa; S. Zaggia; A. Koch

doi:10.1051/0004-6361/201629450

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Table 1

FLAMES instrumental setups used in the Gaia-ESO Survey, with the number of individual stars analyzed in iDR4 for each setup.

Instrument	Setup	λ_min	λ_max	R	iDR4
		(Å)	(Å)	(λ/ Δλ)

UVES	520^a^d	4140	6210	47 000	337
UVES	580^b^d	4760	6840	47 000	3281
UVES	860^c	6600	10 600	47 000	–
GIRAFFE	HR3^a^d	4033	4201	24 800	822
GIRAFFE	HR4^a^e	4188	4297	24 000	–
GIRAFFE	HR5A^a^d	4340	4587	18 470	823
GIRAFFE	HR6^a^d	4538	4759	20 350	806
GIRAFFE	HR9B^d	5143	5356	25 900	2243
GIRAFFE	HR10^f	5339	5619	19 800	29 215
GIRAFFE	HR14A^a^d	6308	6701	17 740	683
GIRAFFE	HR15N^d	6470	6790	17 000	19 431
GIRAFFE	HR21^f	8484	9001	16 200	31 649

Notes. The official ESO setup data presented here refer to the period covered by GES iDR4 observations, i.e., before August 2014.

^(a)

Mostly used for OBA stars (WG13).

^(b)

Mostly used for FGK stars (WG10, WG11, WG12).

^(c)

Used for benchmark stars (legacy value only, no analysis).

^(d)

Used for OCs; HR09B is generally used for stars of type A. and hotter, while HR15N is used for stars of type F and cooler.

^(e)

Not in iDR4, introduced only recently.

^(f)

Used for MW field stars.

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