2004/01/12 by E. Valenti, F. R. Ferraro, S. Perina +1 · 31 citations
Physics and Astronomy · #Astronomy #Astronomy and Astrophysical Research #Astrophysics #Astrophysics and Star Formation Studies #Giant star #Globular cluster #Photometry (optics) #Physics #Red-giant branch #Stars #Stellar, planetary, and galactic studies #astro-ph
paper · pdf · doi:10.1051/0004-6361:20034402
published in Astronomy and Astrophysics 419(1), 139-147 (EDP Sciences) · 10 pages, 12 figures, accepted by Astronomy and Astrophysics
arxiv created 2004/01/12 · openalex publication_date 2004/04/23 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We present near-infrared J and K observations of giant stars in five metal-poor Galactic Globular Clusters (namely M 3, M 5, M 10, M 13 and M 92) obtained at the Telescopio Nazionale Galileo (TNG). This database has been used to determine the main photometric properties of the red giant branch (RGB) from the (K, ) and, once combined with the optical data, in the (K, ) Color Magnitude Diagrams. A set of photometric indices (the RGB colors at fixed magnitudes) and the major RGB evolutionary features (slope, bump, tip) have been measured. The results have been compared with the relations obtained by [CITE] and with the theoretical expectations, showing a very good agreement.