Results 31 to 40 of about 499,224 (333)

Planets around Extreme Horizontal Branch Stars [PDF]

open access: yesAIP Conference Proceedings, 2011
We review three main results of our recent study: We show that a proper treatment of the tidal interaction prior to the onset of the common envelope (CE) leads to an enhance mass loss. This might increase the survivability of planets and brown dwarfs that enter a CE phase.
Ealeal Bear   +4 more
openaire   +4 more sources

Red horizontal branch stars: An asteroseismic perspective

open access: yesAstronomy & 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   +9 more
openaire   +3 more sources

On constructing horizontal branch models [PDF]

open access: yesAstronomy & Astrophysics, 2005
We investigate different methods used to construct (zero-age) horizontal branch models and compare the resulting horizontal branch evolution with that of models resulting from the calculation of the complete stellar evolution from the main sequence and through the core helium flash.
Serenelli, A., Weiss, A.
openaire   +3 more sources

Person Re‐identification Based on Feature Erasure and Diverse Feature Learning

open access: yesIET Computer Vision, 2022
Robust and comprehensive modelling of targets is the key to successful person re‐identification. However, some useful information may be ignored, since CNNs tend to learn from the most distinctive feature region of the human body. In the present study, a
Lu Peng   +4 more
doaj   +1 more source

Branching angles of several cocoa genotypes and their effect on determining optimum plant spacing

open access: yesCoffee and Cocoa Research Journal, 2021
Identification of the type of branching architecture will be one for the considerations in determining specific spacing recommendations for cocoa plantation.
Bayu Setyawan   +3 more
doaj   +1 more source

The horizontal-branch A stars [PDF]

open access: yesPublications of the Astronomical Society of the Pacific, 1979
The observational determination of astrophysical parameters of horizontal-branch A stars is discussed. Effective temperatures, surface gravities, and bolometric magnitudes are determined for seven field horizontal-branch A stars, and their masses are calculated. The mean mass for these seven stars is 0.6 + or - 0.4 solar mass.
D. S. Hayes, A. G. D. Philip
openaire   +1 more source

Characterizing Fabric Anisotropy of Air-Pluviated Sands [PDF]

open access: yesE3S Web of Conferences, 2019
Sand particles depositing through air generally align their largest dimensions in horizontal plane, forming a cross anisotropic fabric. Therefore, sands display varying strength, permeability, compressibility with directions.
Sun Quan   +3 more
doaj   +1 more source

AMS RADIOCARBON DATING OF THE LARGE PEDUNCULATE OAK OF MERCHEAŞA, ROMANIA

open access: yesStudia Universitatis Babes-Bolyai Chemia, 2021
The paper reports the AMS (accelerator mass spectrometry) radiocarbon dating results of the large pedunculate oak of Mercheaşa, Romania, which has a circumference of 10.16 m.
Adrian PATRUT   +6 more
doaj   +1 more source

Numerical Simulation of Natural Gas Hydrate Exploitation in Complex Structure Wells: Productivity Improvement Analysis

open access: yesMathematics, 2021
About 90% of the world’s natural gas hydrates (NGH) exist in deep-sea formations, a new energy source with great potential for exploitation. There is distance from the threshold of commercial exploitation based on the single well currently used.
Hongyu Ye, Xuezhen Wu, Dayong Li
doaj   +1 more source

Horizontal Branch A- and B-type Stars in Globular Clusters [PDF]

open access: yes, 2004
Globular clusters offer ideal laboratories to test the predictions of stellar evolution. When doing so with spectroscopic analyses during the 1990s, however, the parameters we derived for hot horizontal branch stars deviated systematically from ...
Moehler, S.
core   +1 more source

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