Author

C. Mart'inez-V'azquez

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Open access Nov 2026

Variable stars in Local Group galaxies. VIII. A new look into the dSph galaxy Canes Venatici I

Canes Venatici I (CVnI) is a distant dwarf spheroidal galaxy (dSph) satellite of the Milky Way (MW). Recent estimates of its size and luminosity suggest that it does not belong to the ultra-faint class, but rather is similar to the classical MW dSph satellites. The aim of this work is to explore the variable stars of C...

P. Pérez-García, M. Monelli, M. Marengo et al. · Astronomy & Astrophysics · 0 citations

Preprint Oct 2026

Variable Stars in Local Group Galaxies IX: Tracing the Complex History of NGC 205

We present the most extensive catalogue of variable stars in NGC 205 to date, based on archival HST/ACS imaging of a single field $\sim 4^\prime$ from the galaxy centre (GO-15902). We detect 1441 RR Lyrae stars (1064 RRab, 363 RRc, and 14 of uncertain mode) and 35 anomalous Cepheids, and measure their periods, amplitud...

Irina Plaks, M. Marengo, M. Monelli et al. · 0 citations

Preprint Sep 2026

New Optical and Mid-Infrared RR Lyrae Period-Luminosity-Metallicity Relations for Precision Distances and Metallicity Distributions in the Magellanic Clouds

RR Lyrae (RRL) stars, thanks to the existence of their period-luminosity relations, have been widely used as primary standard candles within the Milky Way and the Local Group of galaxies. We present in this work the latest empirical RRL period-luminosity-metallicity (PLZ) and period-Wesenheit-metallicity (PWZ) relation...

C. Mart'inez-V'azquez, J. Mullen, Massimo Marengo et al. · 0 citations