Results 181 to 190 of about 3,055 (216)

Genome-wide association studies on leaf midrib architecture in maize. [PDF]

Front Plant Sci
Dang D, Ji S, Liu Y, Bai C, Zhu Y, Zhang X, Zhang A, Ruan Y.   +7 more
europepmc   +1 more source

Competition between radiative and predissociative decay mechanisms in excited electronic states of CH radical.

Phys Chem Chem Phys
Sokolov A, Yurchenko SN, Tennyson J.
europepmc   +1 more source

Evolutionary dynamics and molecular adaptation of Rift Valley fever virus across human and non-human outbreaks in Africa

Omara IE, Juma J, Tshiabuila D, Dor G, Wilkinson E, Baxter C, Tegally H, Moir M, Oyola SO, de Oliveira T.   +9 more
europepmc   +1 more source

Red horizontal branch stars: An asteroseismic perspective

Astronomy and Astrophysics, 2023
Robust age estimates of red giant stars are now possible thanks to the precise inference of their mass based on asteroseismic constraints. However, there are cases where such age estimates can be highly precise yet very inaccurate. An example is giants that have undergone mass loss or mass transfer events that have significantly altered their mass.
MASSIMILIANO MATTEUZZI, Josefina Montalbán, Andrea Miglio   +2 more
exaly   +4 more sources

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Horizontal-branch star models

Astrophysics and Space Science, 1969
Evolutionary tracks of 0.9M ⊙, 0.7M ⊙ and 0.6M ⊙ models for Population II stars have been computed in the post-red giant phase. The stars are initially composed of a helium core containing a mass fraction equal to 0.9 and of a hydrogen-rich envelope.
V. Castellani, P. Giannone, A. Renzini
openaire   +1 more source

Current problems on horizontal branch stars

Astrophysics and Space Science, 1973
In the light of present knowledge on stellar evolution, it is shown that red ZAHB will not develop for very low metal globular clusters if Y is appreciably greater than 0.1. Recent determinations of the mass-sizes of the Re- cores at the time of the He-flash support independently conclusion that, if no increase in surface He-abundanice occurs between ...
F. Caputo, A. Natta, V. Castellani
openaire   +2 more sources

Horizontal-Branch Stars

2015
Most stars with \(M\stackrel{
Georges Michaud, Georges Alecian, Jacques Richer   +2 more
openaire   +1 more source

On the identification of field horizontal-branch A stars

Publications of the Astronomical Society of the Pacific, 1991
Field horizontal-branch A-star candidates are found by spectroscopic and colorimetric surveys. To confirm their status four-color, H-beta photometry and ultraviolet spectrophotometry have been employed. In this paper, the importance of high-dispersion spectroscopy to identify nonclass members by inspection is demonstrated.
A. G. Davis Philip, Saul J. Adelman
openaire   +1 more source

Current problems on horizontal branch stars

Astrophysics and Space Science, 1975
Expected characteristics of RR Lyrae stars as a function of the evolutive parameters are reported. Results from both evolutionary and pulsational investigations are collected in a suitable form, to show the general constraints to any interpretative analysis of the observations.
Filippina Caputo, Vittorio Castellani
openaire   +1 more source