149 citations · 891 across the 20 of their papers we have counts for
5 papers · 1 filter
Multiple populations along the asymptotic giant branch of the globular cluster M 4
C. Lardo, M. Salaris, A. Savino +3
Nearly all Galactic globular clusters host stars that display characteristic abundance anti-correlations, like the O-rich/Na-poor pattern typical of field halo stars, together with…
Weak Galactic Halo--Fornax dSph Connection from RR Lyrae Stars
G. Fiorentino, M. Monelli, P. B. Stetson +7
For the first time accurate pulsation properties of the ancient variable stars of the Fornax dwarf spheroidal galaxy (dSph) are discussed in the broad context of galaxy formation a…
Optimal stellar photometry for multi-conjugate adaptive optics systems using science-based metrics
P. Turri, A. W. McConnachie, P. B. Stetson +5
We present a detailed discussion of how to obtain precise stellar photometry in crowded fields using images from multi-conjugate adaptive optics (MCAO) systems, with the intent of…
Astrometry with MCAO: HST-GeMS proper motions in the globular cluster NGC 6681
D. Massari, G. Fiorentino, A. McConnachie +7
Aims: for the first time the astrometric capabilities of the Multi-Conjugate Adaptive Optics (MCAO) facility GeMS with the GSAOI camera on Gemini-South are tested to quantify the a…
Variable stars in Local Group Galaxies - II. Sculptor dSph
C. E. Martínez-Vázquez, P. B. Stetson, M. Monelli +9
We present the identification of 634 variable stars in the Milky Way dSph satellite Sculptor based on archival ground-based optical observations spanning 24 years and coverin…