229 citations · 657 across the 14 of their papers we have counts for
7 papers · 1 filter
Effective temperatures of classical Cepheids from line-depth ratios in the H-band
V. Kovtyukh, B. Lemasle, N. Nardetto +6
The technique of line depth ratios (LDR) is one of the methods to determine the effective temperature of a star. They are crucial in the spectroscopic studies of variable stars lik…
On the neutron-capture elements across the Galactic thin disk using Cepheids
R. da Silva, B. Lemasle, G. Bono +19
We present new accurate abundances for five neutron-capture (Y, La, Ce, Nd, Eu) elements in 73 classical Cepheids located across the Galactic thin disk. Individual abundances are b…
Homogeneous abundance analysis of dwarf, subgiant and giant FGK stars with and without giant planets
R. da Silva, A. C. Milone, H. J. Rocha-Pinto
We have analyzed high-resolution and high signal-to-noise ratio optical spectra of nearby FGK stars with and without detected giant planets in order to homogeneously measure their…
On the alpha-element gradients of the Galactic thin disk using Cepheids
K. Genovali, B. Lemasle, R. da Silva +16
We present new homogeneous measurements of Na, Al and three alpha-elements (Mg, Si, Ca) for 75 Galactic Cepheids. The abundances are based on high spectral resolution (R ~ 38,000)…
CoRoT 105906206: a short-period and totally eclipsing binary with a Delta Scuti type pulsator
Ronaldo da Silva, Carla Maceroni, Davide Gandolfi +2
Eclipsing binary systems with pulsating components allow the determination of several physical parameters of the stars, such as mass and radius, that, when combined with the pulsat…
KIC 3858884: a hybrid δ Sct pulsator in a highly eccentric eclipsing binary
C. Maceroni, H. Lehmann, R. da Silva +10
The analysis of eclipsing binaries containing non-radial pulsators allows: i) to combine two different and independent sources of information on the internal structure and evolutio…
Two semi-automated computational approaches for spectroscopic analysis of stellar photospheres: detailed characterization at high resolution and abundance determination at medium resolution
Andre Milone, Ronaldo da Silva, Anne Sansom +1
We report on two distinct computational approaches to self-consistently measure photospheric properties of large samples of stars. Both procedures consist of a set of several semi-…