509 citations · 10.5k across the 231 of their papers we have counts for
11 papers · 1 filter
On the discrete nature of the Red Giant Branch of omega Centauri
A. Sollima, F. R. Ferraro, E. Pancino +1
We report the results of an extensive VLT high-resolution imaging campaign of the central region of the giant globular cluster omega Centauri. More than 100,000 stars have been mea…
The central density cusp of the Sagittarius dwarf spheroidal galaxy
L. Monaco, M. Bellazzini, F. R. Ferraro +1
We present an analysis of the density profile in the central region of the Sagittarius dwarf spheroidal galaxy. A strong density enhancement of Sgr stars is observed. The position…
The small Blue Straggler star population in the dense Galactic Globular Cluster NGC 6752
E. Sabbi, F. R. Ferraro, A. Sills +1
We have used high resolution WFPC2-HST and wide field ground-based observations to construct a catalog of blue straggler stars (BSS) which spans the entire radial extent of the glo…
The distance to the Leo I dwarf spheroidal galaxy from the Red Giant Branch Tip
M. Bellazzini, N. Gennari, F. R. Ferraro +1
We present V and I photometry of a 9.4 arcmin X 9.4 arcmin field centered on the dwarf spheroidal galaxy Leo I. The I magnitude of the tip of the Red Giant Branch is robustly estim…
The distance to the Sgr dwarf spheroidal galaxy from the Red Giant Branch Tip
L. Monaco, M. Bellazzini, F. R. Ferraro +1
We derived the distance to the central region of the Sagittarius dwarf spheroidal galaxy from the Red Giant Branch Tip. The obtained distance modulus is , cor…
The calibration of the RGB Tip as a Standard Candle: Extension to Near Infrared colors and higher metallicity
M. Bellazzini, F. R. Ferraro, A. Sollima +2
New empirical calibrations of the Red Giant Branch Tip in the I,J,H and K bands based on two fundamental pillars, namely omega Centauri and 47 Tucanae, have been obtained by using…