Results 21 to 30 of about 1,428,021 (327)

A unifying explanation of complex frequency spectra of gamma Dor, SPB and Be stars: combination frequencies and highly non-sinusoidal light curves [PDF]

, 2015
There are many Slowly Pulsating B (SPB) stars and γ Dor stars in the Kepler mission data set. The light curves of these pulsating stars have been classified phenomenologically into stars with symmetric light curves and with asymmetric light curves.
Bedding, T. R., Bowman, D. M., Kurtz, Donald Wayne, Murphy, S. J., Shibahashi, H.   +4 more
core   +3 more sources

No detection of large-scale magnetic fields at the surfaces of Am and HgMn stars

, 2010
We investigate the magnetic dichotomy between Ap/Bp and other A-type stars by carrying out a deep spectropolarimetric study of Am and HgMn stars. Using the NARVAL spectropolarimeter at the Telescope Bernard Lyot (Observatoire du Pic du Midi, France), we ...
A. Hui-Bon-Hoa, Abt, Adelman, Aurière, Aurière, Bagnulo, Bartolini, Baudrand, Berthet, Bertiau, Burkhart, Donati, Donati, Donati, Donati, F. Lignières, Fekel, G. A. Wade, Hubrig, Hubrig, Hubrig, I. Kh. Iliev, J. D. Landstreet, J.-F. Donati, Kochukhov, Kochukhov, Kupka, Kurtz, Lampens, Landstreet, Lanz, Lignières, M. Aurière, Mathias, Mathys, Mitton, Morse, P. Petit, Petit, Petit, Rees, Ryabchikova, S. Théado, Shorlin, Smith, Spruit, Stelzer, T. Roudier, Takeda, Torres, Vauclair, Wade, Wade, Zavala, Zhao, Zöchling   +55 more
core   +2 more sources

Checking the possibility of determining the relative orbits of stars rotating around the center body of the Galaxy

Open Astronomy, 2022
The results of observations of selected stars orbiting the central body of our Galaxy, which, according to the latest data, has a mass of about 4 million of solar mass, are considered.
Shakht Natalia A., Izmailov Igor S., Gorshanov Denis L.   +2 more
doaj   +1 more source

Star wreck [PDF]

Physics Letters B, 1998
9 pages; references ...
Kusenko, Alexander, Shaposhnikov, Mikhail, Tinyakov, P. G., Tkachev, Igor I.   +3 more
openaire   +2 more sources

RXJ1856.5-3754 and RXJ0720.4-3125 are P-Stars

, 2004
P-stars are a new class of compact stars made of up and down quarks in $\beta$-equilibrium with electrons in a chromomagnetic condensate. P-stars are able to account for compact stars with $R \lesssim 6 Km$, as well as stars comparable to canonical ...
Cea, Paolo
core   +1 more source

Moduli stars [PDF]

Journal of High Energy Physics, 2018
AbstractWe explore the possibility that (Bose-Einstein) condensation of scalar fields from string compactifications can lead to long-lived compact objects. Depending on the type of scalar fields we find different realisations of star-like and solitonic objects.
Krippendorf, Sven, Muia, Francesco, Quevedo, Fernando   +2 more
openaire   +4 more sources

Could the Ultra Metal-poor Stars be Chemically Peculiar and Not Related to the First Stars? [PDF]

, 2008
Chemically peculiar stars define a class of stars that show unusual elemental abundances due to stellar photospheric effects and not due to natal variations.
Asplund M., David L. Lambert, Dunkin S. K., Gustafsson B., K. A. Venn, Lemke M., Lodders K., Takeda Y., Takeda Y., van Winckel H., van Winckel H., van Winckel H., Waelkens C.   +12 more
core   +2 more sources

THE DETERMINATION OF PERIODS AND THE DEFINITION OF VARIABILITY TYPE OF NEW VARIABLE STAR IRAS 17583+5150

Odessa Astronomical Publications, 2017
The measurements of brightness of the star IRAS 17583+5150 discovered using the Odessa observatory negatives are discussed in the article. The proposed types of these stars are IRAS 17583+5150 -- type SRB (SRC).
A. P. Solonovich, I. S. Bryukhanov
doaj   +1 more source

Tycho 2 stars with infrared excess in the MSX Point Source Catalogue

, 2005
Stars of all evolutionary phases have been found to have excess infrared emission due to the presence of circumstellar material. To identify such stars, we have positionally correlated the infrared MSX point source catalogue and the Tycho 2 optical ...
A. J. Clarke, Alksnis, Aumann, Benjamin, Chengalur, Cohen, Cohen, Coté, Draine, Egan, Fabricius, Hoffleit, Hog, Jura, Koornneef, Kraemer, Lumsden, Oudmaijer, Plets, Pottasch, Price, R. D. Oudmaijer, S. L. Lumsden, Schmidt-Kaler, Stencel, Thé, Van Der Veen, Van Winckel, Walker, Waters, Waters, Waters, Wright, Zhang, Zuckerman   +34 more
core   +1 more source

Extreme isolation of WN3/O3 stars and implications for their evolutionary origin as the elusive stripped binaries

, 2017
Recent surveys of the Magellanic Clouds have revealed a subtype of Wolf-Rayet (WR) star with peculiar properties. WN3/O3 spectra exhibit both WR-like emission and O3 V-like absorption - but at lower luminosity than O3 V or WN stars.
de Mink, Selma E., Gotberg, Ylva, Smith, Nathan   +2 more
core   +2 more sources