Results 41 to 50 of about 214,641 (271)

Building Blue Stragglers with Stellar Collisions

, 2007
The evolution of stellar collision products in cluster simulations has usually been modelled using simplified prescriptions. Such prescriptions either replace the collision product with an (evolved) main sequence star, or assume that the collision ...
Glebbeek, E., Pols, O. R.
core   +1 more source

Hydrodynamic Processes in Massive Stars [PDF]

, 2008
The hydrodynamic processes operating within stellar interiors are far richer than represented by the best stellar evolution model available. Although it is now widely understood, through astrophysical simulation and relevant terrestrial experiment, that ...
Arnett, Casey A. Meakin, Kolmogorov, Kuhfuss, Meakin, Turner, Zahn   +6 more
core   +1 more source

Geographic variation in walking activity in the red flour beetle Tribolium castaneum

Population Ecology, EarlyView.
This study examined whether there is geographic variation in field populations, focusing on the moving activity in the red flour beetle Tribolium castaneum. Results showed significant differences in moving activity among field populations but no correlation with latitude or meteorological factors.
Kentarou Matsumura
wiley   +1 more source

Semi-analytical Expression of G-mode Period Spacing: The Case of Brunt–Väisälä Frequency with Not a Jump but a Ramp

The Astrophysical Journal, 2023
To decipher complex patterns of gravity-mode period spacings observed for intermediate-mass main-sequence stars is an important step toward a better understanding of the structure and dynamics in the deep radiative region of the stars.
Yoshiki Hatta
doaj   +1 more source

The coevolution of the velocity and mass functions of galaxies and dark haloes

, 2010
We employ a bias-corrected abundance matching technique to investigate the coevolution of the LCDM dark halo mass function (HMF), the observationally derived velocity dispersion and stellar mass functions (VDF, SMF) of galaxies between z=1 and 0.
Abadi, Auger, Battaglia, Battaglia, Behroozi, Bell, Bell, Bernardi, Bezanson, Blumenthal, Bolton, Boylan-Kolchin, Brown, Bryan, Bullock, Bundy, Cappellari, Cattaneo, Cenarro, Chae, Chae, Chartas, Choi, Cimatti, Cimatti, Conroy, Conroy, Conselice, Cool, Courteau, de Ravel, Desroches, di Serego Alighieri, Dunkley, Dutton, Faber, Feldmann, Ferrarese, Fontana, Fontanot, Gao, Gavazzi, Gnedin, Grillo, Guo, Ho, Hopkins, Hopkins, Hopkins, Hyde, Ilbert, Jenkins, Kazantzidis, Klypin, Klypin, Kochanek, Koopmans, Kravtsov, Kyu-Hyun Chae, Lacey, Li, Loeb, Lokas, Longhetti, Lukić, Macciò, Marchesini, Masjedi, Matsuoka, Moster, Nakajima, Navarro, Navarro, Newman, Nipoti, Oguri, Pizagno, Pizzella, Pozzetti, Press, Pérez-González, Reed, Rudd, Saha, Scarlata, Seigar, Shankar, Sheth, Sheth, Sheth, Springel, Stringer, Tasitsiomi, Tinker, Tissera, Tonry, Treu, Trujillo, Vale, van der Wel, van der Wel, van Dokkum, van Dokkum, Wake, Warren, Wechsler, White, White, Winn, Xue   +109 more
core   +1 more source

On Stellar Structure and Evolution

, 2021
In this paper, an exposition has been provided on the structure and evolution of stars based on the major functionality on their initial mass. First, we deal with the role of the radiation pressure and its contribution in the overall equilibrium of the stellar stability, then we discuss about the formation of white dwarfs and Newtonian polytropes, then
openaire   +2 more sources

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

Asteroseismology and Spectropolarimetry of the Exoplanet Host Star λ Serpentis

The Astronomical Journal, 2023
The bright star λ Ser hosts a hot Neptune with a minimum mass of 13.6 M _⊕ and a 15.5 day orbit. It also appears to be a solar analog, with a mean rotation period of 25.8 days and surface differential rotation very similar to the Sun.
Travis S. Metcalfe, Derek Buzasi, Daniel Huber, Marc H. Pinsonneault, Jennifer L. van Saders, Thomas R. Ayres, Sarbani Basu, Jeremy J. Drake, Ricky Egeland, Oleg Kochukhov, Pascal Petit, Steven H. Saar, Victor See, Keivan G. Stassun, Yaguang Li, Timothy R. Bedding, Sylvain N. Breton, Adam J. Finley, Rafael A. García, Hans Kjeldsen, Martin B. Nielsen, J. M. Joel Ong, Jakob L. Rørsted, Amalie Stokholm, Mark L. Winther, Catherine A. Clark, Diego Godoy-Rivera, Ilya V. Ilyin, Klaus G. Strassmeier, Sandra V. Jeffers, Stephen C. Marsden, Aline A. Vidotto, Sallie Baliunas, Willie Soon   +33 more
doaj   +1 more source

The Abundance of S-Process Elements: Temporal and Spatial Trends from Open Cluster Observations

Universe, 2022
Spectroscopic observations of stars belonging to open clusters, with well-determined ages and distances, are a unique tool for constraining stellar evolution, nucleosynthesis, mixing processes, and, ultimately, Galactic chemical evolution.
Laura Magrini, Carlos Viscasillas Vázquez, Giada Casali, Martina Baratella, Valentina D’Orazi, Lorenzo Spina, Sofia Randich, Sergio Cristallo, Diego Vescovi   +8 more
doaj   +1 more source

Between Droughts and Floods: The Seasonal Response of Freshwater Snails in Artificial Reservoirs in the Brazilian Semiarid Region

Population Ecology, EarlyView.
We investigate the seasonal dynamics of two freshwater snails, Biomphalaria straminea and Melanoides tuberculata, in artificial reservoirs of the Brazilian semiarid region. Despite regulated hydrology, B. straminea exhibited strong seasonal fluctuations associated with dry periods, while M. tuberculata maintained stable populations throughout the year,
Lucas Henrique Sousa da Silva, João Hemerson de Sousa, Adriana Josefa da Rocha, Manuella Feitosa Leal, Lucas Ariel de Sousa Aguiar, Tamaris Gimenez Pinheiro, Edson Lourenço da Silva   +6 more
wiley   +1 more source