Results 51 to 60 of about 508,501 (339)

Investigation of a W UMa-type contact binary GZ And in a physical triple system

Frontiers in Astronomy and Space Sciences
GZ And is a variable star within the visually observed multiple-star system ADS 1693. Recent observations have yielded new light curves for GZ And, obtained using the Xinglong 85-cm telescope and the Transiting Exoplanet Survey Satellite (TESS) satellite.
Lin-Qiao Jiang, Lin-Qiao Jiang, Lin-Qiao Jiang, Jie Zheng   +3 more
doaj   +1 more source

occumb: An R package for site occupancy modeling of eDNA metabarcoding data

Population Ecology, EarlyView.
This study introduces a new R package, occumb, for the convenient application of site occupancy modeling using environmental DNA (eDNA) metabarcoding data. We outline a data analysis workflow, including data setup, model fitting, model assessment, and comparison of potential study settings based on model predictions, all of which can be performed using
Keiichi Fukaya, Yuta Hasebe
wiley   +1 more source

Binary interactions as a possible scenario for the formation of multiple stellar populations in globular clusters

, 2014
Observations revealed the presence of multiple stellar populations in globular clusters (GCs) that exhibit wide abundance variations and multiple sequences in Hertzsprung-Russell (HR) diagram.
Han, Zhanwen, Jiang, Dengkai, Li, Lifang
core   +1 more source

Roadmap on the theoretical work of BinaMIcS [PDF]

, 2013
We review the different theoretical challenges concerning magnetism in interacting binary or multiple stars that will be studied in the BinaMIcS (Binarity and Magnetic Interactions in various classes of Stars) project during the corresponding ...
Alecian, E., collaboration, the BinaMIcS, Mathis, S., Neiner, C., Wade, G. A.   +4 more
core   +1 more source

Spectroscopic Orbits of Subsystems in Multiple Stars. X (Summary)

The Astronomical Journal, 2023
Results of a large program of spectroscopic monitoring of nearby solar-type stellar hierarchical systems using the CHIRON echelle spectrograph at the 1.5 m telescope are summarized.
Andrei Tokovinin
doaj   +1 more source

Moving in the Dark: Enlightening the Spatial Population Ecology of European Cave Salamanders

Population Ecology, EarlyView.
We assessed individual interactions, movement ecology and activity patterns of a subterranean population of Speleomantes strinatii, applying spatial capture–recapture modeling to a photographic dataset of 104 individuals. ABSTRACT Space use and movement are fundamental aspects of organisms' ecology, mirroring individual fitness, behavior, and life ...
Giacomo Rosa, Andrea Costa, Sebastiano Salvidio   +2 more
wiley   +1 more source

Models for the lithium abundances of multiple populations in globular clusters and the possible role of the Big Bang lithium

, 2012
Globular cluster stars show chemical abundance patterns typical of hot-CNO processing. Lithium is easily destroyed by proton capture in stellar environments, so its abundance may be crucial to discriminate among different models proposed to account for ...
Annibale D'Ercole, Asplund, Bedin, Boesgaard, Cameron, Carretta, Carretta, Carretta, Cyburt, D'Antona, D'Antona, D'Ercole, D'Ercole, D'Ercole, D'Ercole, D'Orazi, D'Orazi, de Mink, Decressin, Decressin, Enrico Vesperini, Fields, Francesca D'Antona, Gratton, Gratton, Iocco, Karakas, Koch, Korn, Korn, Lind, Meléndez, Meynet, Monaco, Monaco, Norris, Paolo Ventura, Pasquini, Pasquini, Piau, Piau, Prantzos, Ramírez, Renzini, Richard, Roberta Carini, Sbordone, Shen, Sills, Spergel, Vanbeveren, Ventura, Ventura, Ventura, Ventura, Ventura   +55 more
core   +1 more source

Soft No More: Gas Shielding Protects Soft Binaries from Disruption in Gas-rich Environments

The Astrophysical Journal
Binaries in dense environments are traditionally classified as soft or hard based on their binding energy relative to the kinetic energy of surrounding stars.
Mor Rozner, Hagai B. Perets
doaj   +1 more source

Infection Models for Pine Wilt Disease on the Basis of Vector Behaviors

Population Ecology, EarlyView.
Infection models for pine wilt disease without vector density were built to estimate the transmission coefficient of the pathogenic nematode. The models successfully simulated the annual change in the density of infected trees for four pine stands. ABSTRACT Pine wilt disease is caused by the pinewood nematode (Bursaphelenchus xylophilus Steiner et ...
Katsumi Togashi
wiley   +1 more source

General Relativistic Decompression of Binary Neutron Stars During Dynamic Inspiral

, 2007
We investigate the dynamic stability of inspiraling neutron stars by performing multiple-orbit numerical relativity simulations of the binary neutron star inspiral process.
Miller, Mark
core   +1 more source