A&A 464, 967–981 (2007) Astronomy DOI: 10.1051/0004-6361:20066065 & c ESO 2007 Astrophysics Na-O anticorrelation and horizontal branches VI. The chemical composition of the peculiar bulge globular cluster NGC 6388, E. Carretta1, A. Bragaglia1, R. G. Gratton2,Y.Momany2, A. Recio-Blanco3, S. Cassisi4,P.François5,6, G. James5,6, S. Lucatello2,andS.Moehler7 1 INAF – Osservatorio Astronomico di Bologna, via Ranzani 1, 40127 Bologna, Italy e-mail:
[email protected] 2 INAF – Osservatorio Astronomico di Padova, Vicolo dell’Osservatorio 5, 35122 Padova, Italy 3 Dpt. Cassiopée, UMR 6202, Observatoire de la Côte d’Azur, BP 4229, 06304 Nice Cedex 04, France 4 INAF – Osservatorio Astronomico di Collurania, via M. Maggini, 64100 Teramo, Italy 5 Observatoire de Paris, 61 avenue de l’Observatoire, 75014 Paris, France 6 European Southern Observatory, Alonso de Cordova 3107, Vitacura, Santiago, Chile 7 European Southern Observatory, Karl-Schwarzchild-Strasse 2, 85748 Garching bei Munchen, Germany Received 19 July 2006 / Accepted 22 December 2006 ABSTRACT We present the LTE abundance analysis of high resolution spectra for red giant stars in the peculiar bulge globular cluster NGC 6388. Spectra of seven members were taken using the UVES spectrograph at the ESO VLT2 and the multiobject FLAMES facility. We exclude any intrinsic metallicity spread in this cluster: on average, [Fe/H] = −0.44 ± 0.01 ± 0.03 dex on the scale of the present series of papers, where the first error bar refers to individual star-to-star errors and the second is systematic, relative to the cluster. Elements involved in H-burning at high temperatures show large spreads, exceeding the estimated errors in the analysis.