Results 1 to 10 of about 313,584 (303)

“POP/STARS”

Persona Studies
In 2018, American developer Riot Games introduced their new musical venture – K-pop virtual band K/DA – through a live augmented reality performance opening the League of Legends World Championship Finals.
Andra Ivănescu
doaj   +4 more sources

Catalog of Magnetic White Dwarfs with Hydrogen Dominated Atmospheres

The Astrophysical Journal, 2023
White dwarfs are excellent research laboratories as they reach temperatures, pressures, and magnetic fields that are unattainable on Earth. To better understand how these three physical parameters interact with each other and with other stellar features,
L. L. Amorim, S. O. Kepler, Baybars Külebi, S. Jordan, A. D. Romero   +4 more
doaj   +1 more source

Galactic Evolution of Beryllium and Oxygen [PDF]

, 2000
We discuss the early evolution of beryllium and oxygen in our Galaxy by comparing abundances of these elements for halo and disk metal-poor stars. Both, O and Be rise as we go progressively to more metal-rich stars, showing a slope 0.41 +-0.09 ([Be/O] vs
Israelian, Garik, Lopez, Ramon Garcia, Rebolo, Rafael   +2 more
core   +2 more sources

Asteroseismological study of massive ZZ Ceti stars with fully evolutionary models [PDF]

, 2013
We present the first asteroseismological study for 42 massive ZZ Ceti stars based on a large set of fully evolutionary carbon$-$oxygen core DA white dwarf models characterized by a detailed and consistent chemical inner profile for the core and the ...
Althaus, L. G., Córsico, A. H., Fraga, L., Kepler, S. O., Romero, A. D.   +4 more
core   +4 more sources

On the Spectral Evolution of Hot White Dwarf Stars. IV. The Diffusion and Mixing of Residual Hydrogen in Helium-rich White Dwarfs

The Astrophysical Journal, 2023
In the framework of our extensive modeling study of the spectral evolution of white dwarfs, we present here a new set of detailed calculations of the transport of residual hydrogen in helium-rich white dwarfs. First, we investigate the so-called float-up
A. Bédard, P. Bergeron, P. Brassard
doaj   +1 more source

Hot DAVs : a probable new class of pulsating white dwarf stars [PDF]

, 2013
We have discovered a pulsating DA white dwarf at the lower end of the temperature range 45 000–30 000 K where a few helium atmosphere white dwarfs are known. There are now three such pulsators known, suggesting that a new class of theoretically predicted
B. T. Gänsicke, Brinkworth, C. M. Copperwheat, Costa, D. W. Kurtz, Dhillon, Dufour, Dufour, Dufour, Eisenstein, Eisenstein, Finley, Fontaine, Fontaine, Fontaine, H. Shibahashi, Homeier, Horne, Hügelmeyer, Kawaler, Kleinman, Kleinman, Kurtz, Lanz, Lehner, Liebert, Marsh, Montgomery, Napiwotzki, Nitta, Provencal, Robinson, S. G. Parsons, S. P. Littlefair, Shibahashi, Shibahashi, T. R. Marsh, V. S. Dhillon, Vennes, Vuille, Wickramasinghe, Winget, Winget   +42 more
core   +2 more sources

All-sky Faint DA White Dwarf Spectrophotometric Standards for Astrophysical Observatories: The Complete Sample

The Astrophysical Journal, 2023
Hot DA white dwarfs (DAWDs) have fully radiative pure hydrogen atmospheres that are the least complicated to model. Pulsationally stable, they are fully characterized by their effective temperature T _eff and surface gravity $\mathrm{log}\,g$ , which can
Tim Axelrod, Abhijit Saha, Thomas Matheson, Edward W. Olszewski, Ralph C. Bohlin, Annalisa Calamida, Jenna Claver, Susana Deustua, Jay B. Holberg, Ivan Hubeny, John W. Mackenty, Konstantin Malanchev, Gautham Narayan, Sean Points, Armin Rest, Elena Sabbi, Christopher W. Stubbs   +16 more
doaj   +1 more source

The White Dwarfs within 20 Parsecs of the Sun: Kinematics and Statistics [PDF]

, 2009
We present the kinematical properties, distribution of spectroscopic subtypes, stellar population subcomponents of the white dwarfs within 20 pc of the sun. We find no convincing evidence of halo white dwarfs in the total 20 pc sample of 129 white dwarfs
Chiba, Davies, Dufour, Dufour, Edward M. Sion, Farihi, George P. McCook, Holberg, Holberg, Holberg, Holberg, J. B. Holberg, Kawaler, Kawka, Kawka, Lépine, Mugrauer, Napiwotzki, Richard Wasatonic, Silvestri, Strittmatter, Subasavage, Subasavage, Terry D. Oswalt, Wooley   +24 more
core   +4 more sources

Spectroscopy of Stellar-Like Objects Contained in the Second Byurakan Survey. I [PDF]

, 1999
The results of spectroscopic observations of 363 star-like objects from the Second Byurakan Survey (SBS) are reported. This SBS's subsample has proven to be a rich source of newly identified quasars, Seyfert type galaxies, degenerate stars and hot ...
Afanasiev V. L., Bade N., Chavushyan V. H., Drabek S. V., H. M. Tovmassian, J. A. Stepanian, L. Carrasco, L. K. Erastova, Markarian B. E., Markarian B. E., Markarian B. E., Markarian B. E., Markarian B. E., Markarian B. E., Markarian B. E., Markarian B. E., Markarian B. E., Stepanian J. A., Stepanian J. A., Stepanian J. A., Stepanian J. A., Stepanian J. A., Stepanian J. A., Stepanian J. A., V. H. Chavushyan, Vlasyuk V. V.   +25 more
core   +2 more sources

Asteroseismic Study of KUV03442+0719 with Parallax Constraints

The Astrophysical Journal, 2023
Hydrogen atmosphere white dwarf KUV03442+0719 was first reported as a pulsator by Gianninas et al. in 2006. Follow-up campaigns by Su et al. revealed more periods.
Agnes Bischoff-Kim
doaj   +1 more source