Photometric observations and Coravel radial velocities of red giant candidates in open clusters

CLARIA OLMEDO, JUAN JOSÉ; PIATTI, ANDRÉS E.; MERMILLIOD, J.C.; PALMA, T.

Boletín de la Asociación Argentina de Astronomía

G. Dubner, D. Garcia Lambas, A.E. Piatti

Año: 2009

We present high precision multicolour photoelectric photometry together with Coravel radial-velocity data for a sample of red giant (RG) candidates in nine Galactic open clusters. Nearly 82% of the analized stars are found to be cluster RGs from photometric criteria, in excellent agreement with the Coravel membership probabilities. E(B-V) colour excesses, effective temperatures and metallicities are derived for the cluster giants. A new spectroscopic binary was discovered among the RGs of NGC2482.