Results 171 to 180 of about 1,914,179 (372)

Short Wavelength Limit of the Dynamic Matsubara Local Field Correction

Contributions to Plasma Physics, EarlyView.
ABSTRACT We investigate the short wavelength limit of the dynamic Matsubara local field correction G˜q,zl$$ \tilde{G}\left(\mathbf{q},{z}_l\right) $$ of the uniform electron gas based on direct ab initio path integral Monte Carlo (PIMC) results over an unprecedented range of wavenumbers, q≲20qF$$ q\lesssim 20{q}_{\mathrm{F}} $$, where qF$$ {q}_{\mathrm{
Tobias Dornheim, Panagiotis Tolias, Zhandos A. Moldabekov, Jan Vorberger   +3 more
wiley   +1 more source

A survey of pulsating DA and DB white dwarfs Observations with the Whole Earth Telescope

EPJ Web of Conferences, 2017
White dwarfs represent the end point of stellar evolution for the majority of stars. As such, they are excellent astrophysical laboratories. They are structurally simple, with electron degenerate cores surrounded by thin surface layers of helium and/or ...
Provencal J. L., Montgomery M., Shipman H.   +2 more
doaj   +1 more source

A study of high proper-motion white dwarfs I. Spectropolarimetry of a cool hydrogen-rich sample

, 2012
We conducted a spectropolarimetic survey of 58 high proper-motion white dwarfs which achieved uncertainties of >2 kG in the Halpha line and >5 kG in the upper Balmer line series.
Adéla Kawka, Aurière, Aznar Cuadrado, Bagnulo, Barstow, Benvenuto, Bergeron, Bergeron, Brinkworth, Burleigh, Carollo, Carrier, Chiba, Costa, Dobbie, Dufour, Eggen, Eggen, Eggen, Fabrika, Farihi, Ferrario, Garcés, García-Berro, Garstang, Giammichele, Gianninas, Girardi, Girven, Gould, Greenstein, Hintzen, Johnson, Jordan, Jordan, Kalirai, Kawka, Kawka, Kawka, Kawka, Kawka, Kawka, Kawka, Kawka, Kawka, Kemic, Kepler, Kilic, Kilic, Kilkenny, Kleinman, Koester, Koester, Kowalski, Lamontagne, Limoges, Luyten, Luyten, Lépine, Lépine, Martin, Maxted, Maxted, McCook, Muslimov, Nordhaus, Oppenheimer, Patat, Pauli, Pokorny, Potter, Putney, Reid, Salim, Salim, Schaller, Schilbach, Schmidt, Schmidt, Schmidt, Serenelli, Silvestri, Skrutskie, Smith, Stéphane Vennes, Subasavage, Subasavage, Tout, Tremblay, Valyavin, van Leeuwen, Vennes, Vennes, Vennes, Vergely, Welsh, Wesemael, Wickramasinghe, Zuckerman, Zuckerman   +99 more
core   +1 more source

Note on the Spectrum of a Probable White Dwarf in h Persei. (Plate 1.) [PDF]

, 1931
Yngve Öhman
openalex   +1 more source

Instantaneous Normal Modes of Yukawa Liquids

Contributions to Plasma Physics, EarlyView.
ABSTRACT The instantaneous normal mode (INM) approach, which extends the normal mode description of collective excitations in solids to liquids, is applied to strongly coupled, three‐dimensional Yukawa liquids. Based on data from Langevin dynamics simulations, we compute the instantaneous normal modes across a wide range of coupling and screening ...
Tillman Keller, Hanno Kählert
wiley   +1 more source

The WFCAM transit survey and cool white dwarfs

EPJ Web of Conferences, 2013
We present results from our search for cool white dwarfs in the WTS (WFCAM Transit Survey). Repeat observations starting in 2007 allowed to produce deep stacked images in J and measure proper motions.
Pinfield D., Hornillos D. Cristobal, Hodgkin S., Napiwotzki R., Catalan S.   +4 more
doaj   +1 more source

Stars in the Hubble Ultra Deep Field

, 2004
We identified 46 unresolved source candidates in the Hubble Ultra Deep Field, down to i775 = 29.5. Unresolved objects were identified using a parameter S, which measures the deviation from the curve-of-growth of a point source.
A. Burgasser, A. M. Koekemoer, A. Pasquali, C. Gronwall, C. Xu, E. P. Nelan, J. E. Rhoads, J. R. Walsh, K. C. Sahu, L. A. Moustakas, Mendez R. A., N. Panagia, N. Pirzkal, R. A. Windhorst, S. Malhotra   +14 more
core   +2 more sources

Environmental and local habitat variables as predictors of trophic interactions in subtidal rocky reefs along the SE Pacific coast

Ecography, EarlyView.
Temperature generally drives latitudinal patterns in the strength of trophic interactions, including consumption rates. However, local community and other environmental conditions might also affect consumption, disrupting latitudinal gradients, which results in complex large‐scale patterns.
Catalina A. Musrri, Alistair G. B. Poore, Oscar Pino, Nicolás Riquelme, Wolfgang B. Stotz, Fadia Tala, Martin Thiel   +6 more
wiley   +1 more source

On the Theory of White Dwarf Stars: II. The Accretion of Interstellar Matter by White Dwarfs [PDF]

, 1952
L. Mestel
openalex   +1 more source

How many trees are there in the North American boreal forest?

Ecography, EarlyView.
Boreal forests, the largest terrestrial biome on Earth, are highly varied in local tree density. Despite previous attempts to estimate tree density in boreal forests, the accuracy of the estimation is unknown, leaving the question how many trees there are in boreal forests largely unanswered. Here, we compiled tree density data from 4367 plots in North
Kun Xu, Jingye Li, Jian Zhang, Dingliang Xing, Fangliang He   +4 more
wiley   +1 more source