A new criterion for bar-forming instability in rapidly rotating gaseous and stellar systems. 1: Axisymmetric form

1995 ◽  
Vol 443 ◽  
pp. 551 ◽  
Author(s):  
Dimitris M. Christodoulou ◽  
Isaac Shlosman ◽  
Joel E. Tohline
1995 ◽  
Vol 443 ◽  
pp. 563 ◽  
Author(s):  
Dimitris M. Christodoulou ◽  
Isaac Shlosman ◽  
Joel E. Tohline

1966 ◽  
Vol 24 ◽  
pp. 348-349
Author(s):  
Th. Schmidt-Kaler

This is only an informal remark about some difficulties I am worrying about.I have tried to recalibrate the MK system in terms of intrinsic colour (B–V)0and absolute magnitudeMv. The procedures used have been described in a review article by Voigt (Mitt. Astr. Ges.1963, p. 25–35), and the results for stars of the luminosity classes Ia-O,I and II have been given also in Blaauw's article on the calibration of luminosity criteria in vol. III (Basic Astronomical Data, p. 401) ofStars and Stellar Systems.


1979 ◽  
Vol 46 ◽  
pp. 125-149 ◽  
Author(s):  
David A. Allen

No paper of this nature should begin without a definition of symbiotic stars. It was Paul Merrill who, borrowing on his botanical background, coined the termsymbioticto describe apparently single stellar systems which combine the TiO absorption of M giants (temperature regime ≲ 3500 K) with He II emission (temperature regime ≳ 100,000 K). He and Milton Humason had in 1932 first drawn attention to three such stars: AX Per, CI Cyg and RW Hya. At the conclusion of the Mount Wilson Ha emission survey nearly a dozen had been identified, and Z And had become their type star. The numbers slowly grew, as much because the definition widened to include lower-excitation specimens as because new examples of the original type were found. In 1970 Wackerling listed 30; this was the last compendium of symbiotic stars published.


2019 ◽  
Vol 29 (6) ◽  
pp. 215-228

This paper deals with the impact that Karl Marx"s Das Kapital (and especially its fourth volume, the theory of Surplus Value) had on the category of economy in Kazimir Malevich"s output. In a series of texts, Malevich proclaims economy the new criterion of art and the Black Square its embodiment in contemporary painting. While the author was analyzing Marx"s views on labor and human nature, echoes of them turned up in Malevich"s manifestos and philosophical essays where the artist pondered the idea of the liberation of creative exaltation. The article others an interpretation of the creative process itself from the standpoint of economy, which for Malevich provided an opportunity to lay down the foundation for a new kind of art that was consistent with the prevailing ideology. The author points out that while Malevich was in Vitebsk he studied Marx"s works with idea of incorporating economic studies into art: his speculations on the relationships between the ideological superstructure and the practical, economic base were written in the manner of Marxist philosophy and provided the basis for his main essays, The World as Non-Objectivity (1923) and Suprematism: Thee World as Non-Objectivity or Eternal Rest (1923-1924). They defined the new art as an independent ideological superstructure positioned “outside of other contents and ideologies.” Parallel to that, the author examines the correspondence between Malevich"s theory of the surplus element and Marxist doctrines on surplus value. It is also shown that Malevich hoped to prove that, as in dialectical materialism, his new surplus element opens the way to a new artistic structure that is emerging from the womb of the old system in the same way that communism comes about as a kind of heterogeneous body from within the underpinnings of bourgeois society.


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