27 citations · 123 across the 12 of their papers we have counts for
13 papers
NGC 6426: Colour-Magnitude diagram and variable star population as indicators of metallicity, distance, and age
A. Arellano Ferro, R. Michel, D. Deras +3
We present new VI CCD photometry of the globular cluster NGC 6426. The membership status of all point sources and, in particular, of all the variables in the field of view is discu…
A Homogenized Catalogue of Variable Stars in the Globular Cluster M22: Membership, Physical Parameters, and Distance
M. A. Yepez, B. Moreno-Amaro, M. Ornelas-Castañeda +2
We present a photometric analysis of the variable stars in the field of the globular cluster M22 (NGC 6656), using time-series photometry from the literature and from OGLE and Gaia…
Variable stars in the field of the Galactic globular cluster M71
C. C. Cortés, D. Deras, A. Arellano Ferro +2
M71 is a nearby, metal-rich globular cluster at low Galactic latitude, where field contamination and spatially variable extinction complicate colour-magnitude diagrams (CMDs) and t…
A Photometric in-depth look at the core-collapsed globular cluster NGC 6284
Dan Deras, Mario Cadelano, Barbara Lanzoni +4
High-resolution Hubble Space Telescope (\textit{HST}) optical observations have been used to perform the deepest photometric study of the poorly studied Galactic globular cluster N…
Empirical measurement of the dynamical ages of three globular clusters and some considerations on the use of the dynamical clock
Francesco R. Ferraro, Barbara Lanzoni, Enrico Vesperini +3
We have used the ``dynamical clock'' to measure the level of dynamical evolution reached by three Galactic globular clusters (namely, NGC 3201, NGC 6316 and NGC 6440). This is an e…
Digging into the Galactic Bulge: stellar population and structure of the poorly studied cluster NGC 6316
Dan Deras, Mario Cadelano, Francesco Ferraro +2
High-resolution Hubble Space Telescope optical observations have been used to analyze the stellar population and the structure of the poorly investigated bulge globular cluster NGC…