Results 31 to 40 of about 112,637 (293)

The Stellar Dynamics of Omega Centauri

, 1996
The stellar dynamics of Omega Centauri are inferred from the radial velocities of 469 stars measured with CORAVEL (Mayor et al. 1997). Rather than fit the data to a family of models, we generate estimates of all dynamical functions nonparametrically, by ...
Mayor, M., Merritt, David, Meylan, G.
core   +1 more source

Linking the formation and fate of exo-Kuiper belts within solar system analogues [PDF]

, 2020
Escalating observations of exo-minor planets and their destroyed remnants both passing through the solar system and within white dwarf planetary systems motivate an understanding of the orbital history and fate of exo-Kuiper belts and planetesimal discs.
Cai, Maxwell X., Dotti, Francesco Flammini, Kouwenhoven, M. B. N., McDonald, Catriona H., Mustill, Alexander J., Reichert, Katja, Shannon, Andrew, Spurzem, Rainer, Veras, Dimitri, Zwart, Simon Portegies   +9 more
core   +3 more sources

Black Hole Mergers Driven by a Captured Low-mass Companion

The Astrophysical Journal Letters, 2023
Increased eccentricity of a black hole binary leads to reduced merger times. With n -body simulations and analytic approximations including the effects of general relativity (GR), we show that even a low-mass companion orbiting a black hole binary can ...
Stephen Lepp, Rebecca G. Martin, Bing Zhang   +2 more
doaj   +1 more source

FFNN–TabNet: An Enhanced Stellar Age Determination Method Based on TabNet

Applied Sciences
The precise ascertainment of stellar ages is pivotal for astrophysical research into stellar characteristics and galactic dynamics. To address the prevalent challenges of suboptimal accuracy in stellar age determination and limited proficiency in ...
Han Zhang, Yadong Wu, Weihan Zhang, Yuling Zhang   +3 more
doaj   +1 more source

Stellar hydrodynamics caught in the act: Asteroseismology with CoRoT and Kepler

, 2011
Asteroseismic investigations, particularly based on data on stellar oscillations from the CoRoT and Kepler space missions, are providing unique possibilities for investigating the properties of stellar interiors.
Auvergne, Baglin, Baglin, Baudin, Bazot, Bedding, Blažko, Borucki, Bouchy, Bouchy, Carrier, Catala, Chadid, Charpinet, Christensen-Dalsgaard, Degroote, Deheuvels, Dominik, Dupret, Dziembowski, Fontaine, Frandsen, Gough, Gough, Grundahl, Grundahl, Handler, Hekker, Hekker, Houdek, Huber, Jørgen Christensen-Dalsgaard, Kallinger, Kallinger, Kjeldsen, Kjeldsen, Kolenberg, Kolenberg, Kuschnig, Lamb, Maeder, Mathis, Mathis, Michael J. Thompson, Miesch, Miglio, Miglio, Montalbán, Moskalik, Mosser, Mosser, Palacios, Palacios, Pamyatnykh, Poretti, Smith, Soszyński, Trampedach, Van Grootel   +58 more
core   +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

Multiple views of magnetism in cool stars [PDF]

, 2012
Magnetic fields are regarded as a crucial element for our understanding of stellar physics. They can be studied with a variety of methods which provide complementary - and sometimes contradictory - information about the structure, strength and dynamics ...
Arzoumanian, Basri, Cohen, Donati, Fares, Gregory, Hale, Hallinan, Hussain, Jeffers, McIvor, Morin, Peterson, Poppenhaeger, Reiners, Reiners, Reiners, Route, Semel, Shulyak, Torres, Vidotto, Vidotto, Vogt, Walkowicz   +24 more
core   +3 more sources

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

Observational dynamics of low-mass stellar systems

, 2014
The last fifteen years have seen the discovery of new types of low-mass stellar systems that bridge the gap between the once well-separated regimes of galaxies and of star clusters.
Frank, Matthias J.
core   +1 more source

An Adaptive Management Model for Brown Bears in Hokkaido: Based on Total Population and the Number of Nuisance Bears

Population Ecology, EarlyView.
Bear management changes management actions according to the horizontal axis of the population size and the vertical axis of the number of nuisance bears. Aiming for the target population size of Ntar, Actions I and II protect the bears, and Action IV reduces the population.
Hiroyuki Matsuda, Akira Maki, Tsutomu Mano, Hifumi Tsuruga, Hino Takafumi, Shinichi Horino   +5 more
wiley   +1 more source