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. Московский государственный университет имени М.В.Ломоносова . Lomonosov Moscow State University . Государственный астрономический институт имени П.К.Штернберга . Sternberg State Astronomical Institute . Отдел небесной механики Celestial Mechanics Department . Кафедра небесной механики, . астрометрии и гравиметрии . Для студентов . О кафедре .

... Lemmon SkyCenter , University of Arizona Explanation: The cosmic brush of star formation composed this alluring mix of dust and dark nebulae. Cataloged as Sh2-239 and LDN 1551, the region lies near the southern end of the Taurus molecular cloud complex some 450 light-years distant. ... NASA Web Site Statements, Warnings, and Disclaimers . ... Publications with keywords: star formation - dust . Publications with words: star formation - dust . ... NGC 3310: A Starburst Spiral Galaxy . ...

In order to calculate the line profile of a given absorption line for atomic species Z with a wavelength LAMBDA (in Angstroms) and a microturbulent velocity VT (in km/s). ... mode . ... 1) The input model may contain more than one model (i.e. it may be an entire grid of models). Spectrum will cycle through this grid NMOD times, omitting NSKIP-1 models from the . ... However, the input data following MODE must be repeated NMOD times in order to obtain equivalent results for each model in the grid. ...

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... Let us first find out which way -- rise in spectral resolution with some loss in the S/N ratio or increase in the S/N ratio with a fixed spectral resolution -- is better for the purpose of reduction of equivalent width determination errors. ... N -- number of counts for 1 ? ... line equivalent width, . ... Thus if the spectral resolution is managed to be increased (i.e. to decrease )without loss in the number of counts falling at 1 ?, the equivalent width measurement error is then proportional to . ...

Subject of Celestial Mechanics. ... Differential Absolute Coordinates Equations of the Problem. ... General Integral of Non-Perturbed Motion. ... General Equation of Non-Perturbed Orbit. ... Other Integration Methods of Non-Perturbed Motion Differential Equations; Bine Equation for Case of Non-Perturbed Motion. ... Ellipsical Motion, Kepler Equation. ... Motion Differential Equations in Absolute Coordinates. ... Equation of System of Bodies Motion in Barycentric Coordinates, in Relative Coordinates. ...

... Problem 2. (a) Prove that the spaces R3 \ S 1 and S 2 S 1 are homotopy equivalent; here S 1 R3 is the standard circle lying in the xy coordinate plane. (b) Let X be the space R3 from which n copies of S 1 lying in parallel planes are deleted. ... Prove that the spaces R3 \ L and S 2 T2 are homotopy equivalent. For every continuous map f : S 1 S 1 one can de ne an integer deg(f ) so that the following statements are true: · Maps f1 and f2 are homotopic if and only if deg(f1 ) = deg(f2 ). ...

... Records were made this January when the RadioAstron satellite was joined by ground-based telescopes, forming a radio telescope 220,000 km across тАУ roughly 20 times larger than the Earth. RadioAstron , a Russian orbital telescope of 10 meter diameter, joined with ground-based observatories to resolve objects 50 times smaller than is possible with the Hubble Space Telescope. ... Images: . The RadioAstron spaceantenna observes a celestial radio source simultaneously with ground-based dishes. ...