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An eclipsing-binary distance to the Large Magellanic Cloud accurate to two per cent
TLDR
Determinations of the distances to eight long-period, late-type eclipsing systems in the Large Magellanic Cloud, composed of cool, giant stars, provide a firm base for a 3-per-cent determination of the Hubble constant. Expand
The Pisa pre-main sequence tracks and isochrones - A database covering a wide range of Z, Y, mass, and age values
Context. In recent years new observations of pre-main sequence stars (pre-MS) with Z≤ Z⊙ have been made available. To take full advantage of the continuously growing amount of data of pre-MS stars inExpand
RR-Lyrae-type pulsations from a 0.26-solar-mass star in a binary system
TLDR
It is reported that RRLYR-02792 has a mass of 0.26 solar masses and therefore cannot be a classical RR Lyrae star, and its properties are best explained by the evolution of a close binary system that started with and stars orbiting each other with an initial period of 2.9 days. Expand
Very low-mass white dwarfs with a C-O core
Context. The lower limit for the mass of white dwarfs (WDs) with a C−O core is commonly assumed to be roughly 0.5 M� . As a consequence, WDs of lower masses are usually identified as He-coreExpand
\Delta Y/ \Delta Z from the analysis of local K dwarfs
The stellar helium-to-metal enrichment ratio, \Delta Y/\Delta Z, is a widely studied astrophysical quantity. However, its value is still not precisely constrained. This paper is focused on the studyExpand
Hipparcos open clusters and stellar evolution
By relying on recently improved Hipparcos parallaxes for the Hyades, Pleiades and Ursa Major clusters we find that stellar models with updated physical inputs nicely reproduce the location in theExpand
PHOTOMETRIC DETERMINATION OF THE MASS ACCRETION RATES OF PRE-MAIN-SEQUENCE STARS. II. NGC 346 IN THE SMALL MAGELLANIC CLOUD*
We have studied the properties of the stellar populations in the field of the NGC 346 cluster in the Small Magellanic Cloud, using a novel self-consistent method that allows us to reliably identifyExpand
Statistical errors and systematic biases in the calibration of the convective core overshooting with eclipsing binaries - A case study: TZ Fornacis
We attempt to constrain the initial helium abundance, the age and the efficiency of the convective core overshooting of the binary system TZ Fornacis. Our main aim is in pointing out the biases inExpand
Stellar evolutionary models for Magellanic Clouds
We supplement current evolutionary computations concerning Magellanic Cloud stars by exploring the evolutionary behavior of canonical stellar models (i.e., with inefficient core overshooting) withExpand
On the absolute age of the globular cluster M71
We present precise and deep optical photometry of the globular M92. Data were collected in three different photometric systems: Sloan Digital Sky Survey (g 0 , r 0 , i 0 , and z 0 ; MegaCam at CFHT),Expand
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