منابع مشابه
Algol-Genius
Algol-Genius, an Algol 60 implementation with features from COBOL, was the brainchild of Börje Langefors. In 1964, assembler was the dominant programming language, but Algol-Genius broke that trend among Datasaab D21 customers. Algol-Genius programs were still in production in the late nineties.
متن کاملThe University of New South Wales Extrasolar Planet Search : a catalogue of variable stars from fields observed 2004 – 2007
We present a new catalogue of variable stars compiled from data taken for the University of New South Wales Extrasolar Planet Search. From 2004 October to 2007 May, 25 target fields were each observed for 1–4 months, resulting in ∼ 87000 high precision light curves with 1600–4400 data points. We have extracted a total of 850 variable light curves, 659 of which do not have a counterpart in eithe...
متن کاملNew Ccd Observations of the Rr Lyrae Variables in the Oosterhoff Type Ii Cluster M9
CCD observations have been used to study sixteen of the previously known variables in the Oosterhoo type II globular cluster M9. The properties of the RR Lyrae variables in M9 are compared with those in the Oosterhoo type I cluster M3. Methods devised by Simon, Jurcsik and Kovv acs have been used to derive physical parameters for the stars from Fourier analysis. The mean metal abundance so deri...
متن کاملMulti-Periodic Oscillations in Cepheids and RR Lyrae-Type Stars
Classical Cepheids and RR Lyrae-type stars are usually considered to be textbook examples of purely radial, strictly periodic pulsators. Not all the variables, however, conform to this simple picture. In this review I discuss different forms of multi-periodicity observed in Cepheids and RR Lyrae stars, including Blazhko effect and various types of radial and nonradial multi-mode oscillations.
متن کاملLinear Algebra ALGOL
Theoret ica l B a c k g r o u n d The procedure bisect is designed to replace the procedures tridibi I and 2 given in ES]. All three procedures are based essentially on the following theorem. Given a symmetric tridiagonal matrix with diagonal elements q to cn and off-diagonal elements b, to b, (with b 1 set equal to zero for completeness) and b i 4=0, then for any number 2 let the sequence Po (...
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ژورنال
عنوان ژورنال: Astronomische Nachrichten
سال: 1902
ISSN: 0004-6337,1521-3994
DOI: 10.1002/asna.19021591906