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41. A 20 cm VLA survey of Abell clusters of galaxies
... We have made observations of the Perseus cluster with the Westerbork Telescope at 610 MHz. ... Several newly detected sources are identified with cluster galaxies. ... No evidence is found for the existence of the previously reported ~ 65'x25' cluster halo, 3C 84B. Key words: radio galaxies - clusters - tailed radio sources buoyancy The Perseus Cluster of galaxies is one of the most fascinating systems accessible to extragalactic astronomers. ...
[ Сохраненная копия ]  Ссылки http://www.sao.ru/cats/doc/CL_WSRT.html -- 7.9 Кб -- 18.03.2015
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42. Phil Plait's Bad Astronomy: Mad Science
... Bad Astronomy . ... Mad Science . ... Or..why don't the planets orbit the sun in the same plane as the sun orbits the galactic center? ... The writer suggested that the angular momentum of the stars was related to the original cloud that collapsed to form them and not the galaxy angular momentum. ... As I understand the answer to 902372110.as, if the stars orbit is not related to the galaxy spin, then I would expect the stars to orbit the galaxy at a multitude of random orbits and no disk to form. ...
[ Сохраненная копия ]  Ссылки http://www.badastronomy.com/mad/2000/ecliptic.html -- 20.4 Кб -- 09.04.2016
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43. The AstroStat Slog Blog Archive [ArXiv] component separation methods
... Archives . ... The PCA and ICA is used for separating mixed components with some assumptions. ... The need of source separation methods in astronomy has led various adaptations of decomposition methods available. ... I rarely come up with a paper which gathered and summarized component separation methods applicable to astronomical data. In that regards, the following paper seems useful to overview methods of reducing dimensionality for astronomers. [arxiv:0805.0269] . ... Chandra Blog . ...
[ Сохраненная копия ]  Ссылки http://hea-www.harvard.edu/AstroStat/slog/groundtruth.info/AstroStat/slog/2009/arxiv-component-separation-methods/index.html -- 23.2 Кб -- 01.03.2014
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44. http://www.ipa.nw.ru/conference/2002/sovet/PS/BENEST.PS
... 8, ``Celestial Mechanics'', 2002 Regularity and chaos for planetary orbits in binaries D. Benest Observatoire de Nice, Nice, France 1. ... Previous papers showed that stable planetary orbits, around either the lightest or the heaviest component of several nearby binary systems, exist up to distances from their primary of the order of more than half the binary's periastron sep­ aration. ... Chaos: bounded or sticky? It is now well­known that planetary dynamics may include some proportion of chaos. ...
[ Текст ]  Ссылки http://www.ipa.nw.ru/conference/2002/sovet/PS/BENEST.PS -- 29.4 Кб -- 19.08.2002
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45. http://www.gao.spb.ru/english/as/j2014/presentations/popadyov.pdf
Some common problems in geodesy and astrometry after establishing ICRF Victor V. Popadyov, Centre de geodesie et cartographie (CNIIGAiK) Svetlana A. Tolchel'nikova, GAO Pulkovo Distribution of duties between astrometry and geodesy · Connection between the 2 sciences was established by the plumb-line near Earth surface · Astrometry : ... E. rot., pole motion). ... Radiosources are unobservable from points of geodetic net. ...
[ Текст ]  Ссылки http://www.gao.spb.ru/english/as/j2014/presentations/popadyov.pdf -- 391.5 Кб -- 28.09.2014
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46. Telescope Tracking Smoothness
... Appendix: Effect of errors in the encoder roller and drive disk on tracking. ... Servo error. ... Table 1: Tracking error budget Component Component error (nm RMS ) Effect (mas RMS ) Az axis wobble Drive disk high freq. error 200 17.17 Guide roller error 50 8.58 Lower bearing high freq./nonrep. error 50 4.29 Alt axis wobble Bearing high freq./nonrep. error 50 4.86 Az encoding error Drive disk high freq error 200 4.59 Encoder capstan error 50 5.73 Encoder ...
[ Сохраненная копия ]  Ссылки http://www.apo.nmsu.edu/Telescopes/SDSS/eng.papers/19920608_TrackBud/19920608-03.html -- 14.5 Кб -- 19.05.1998
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47. http://www.adass.org/adass/proceedings/adass94/aket.ps
... 77, 1995 R. A. Shaw, H. E. Payne, and J. J. E. Hayes, eds. Calculating the Position and Velocity Components of HST T. B. Ake Astronomy Programs, Computer Sciences Corporation, Code 681/CSC, Goddard Space Flight Center, Greenbelt, MD 20771 Abstract. ... COSINCLI cosine of inclination cos i SINEINCL sine of inclination sin i CIRVELOC circular orbit linear velocity (meters/second) VC TIMEFFEC time parameters took effect (secs since 1/1/85) -- 2. ... Gamma 2ъ —\Omega x; — z = a 0 z + a 1 sin i cos(! ...
[ Текст ]  Ссылки http://www.adass.org/adass/proceedings/adass94/aket.ps -- 154.9 Кб -- 13.06.1995
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48. http://astro.uni-altai.ru/~aw/DeltaT/JBAAS-2008.pdf
... This paper discuss a polynomial approximation to T for the range of 1620 to 2000 AD published by Jean Meeus and Larry Simons and gives a modified version of this approximation which is much more accurate. ... For this purpose Jean Meeus and Larry Simons published a paper in 2000, which gives a set of polynomial approximation of T for the range of years 1620 to 2000 (Meeus 2000). ... Using these empirical formulae we can calculate the value of T at any instant of the year for the range 1620 to 2000...
[ Текст ]  Ссылки http://astro.uni-altai.ru/~aw/DeltaT/JBAAS-2008.pdf -- 136.0 Кб -- 07.05.2013
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49. http://www.izmiran.rssi.ru/~obridko/papers/347engl.pdf
... 83, No. 11, pp. 1031­1041. i Variations of the Dipole Magnetic Moment of the Sun during the Solar Activity Cycle I. M. Livshits and V. N. Obridko Pushkov Institute of Terrestrial Magnetism, the Ionosphere, and Radiowave Propagation, Troitsk, Russia Received February 28, 2006; in final form, March 13, 2006 Abstract--Observations of the large-scale solar magnetic field (synoptic maps) and measurements of the magnetic ... A 100 000 10 000 10 20 30 40 50 60 Period, days Fig. ...
[ Текст ]  Ссылки http://www.izmiran.rssi.ru/~obridko/papers/347engl.pdf -- 629.2 Кб -- 14.03.2011
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50. http://mavr.sao.ru/hq/balega/PUBL_BAL/PUB_2008/aa_478_187.pdf
... A careful evaluation of the components' masses and a study of the system's overall stability and long-term dynamical evolution were also pursued. ... Due to the almost definitive orbit of the inner pair, which just covered a full revolution, the motion of B relative to MC A has been carefully calculated. ... Orbital elements and system mass. ... The motion in this hierarchical three-body system is a combination of two perturbed motions: the inner pair Aa-Ab and the B component with regard to MCA . ...
[ Текст ]  Ссылки http://mavr.sao.ru/hq/balega/PUBL_BAL/PUB_2008/aa_478_187.pdf -- 159.6 Кб -- 18.05.2009
[ Текст ]  Ссылки http://www.sao.ru/hq/balega/PUBL_BAL/PUB_2008/aa_478_187.pdf -- 159.6 Кб -- 24.02.2010
[ Текст ]  Ссылки http://jet.sao.ru/hq/balega/PUBL_BAL/PUB_2008/aa_478_187.pdf -- 159.6 Кб -- 24.02.2010
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51. http://www.univer.kharkov.ua/docs/work/slavic_summer_2014_1_1.pdf
... Kulikov kulikov@karazin.ua History of Ukraine Department V.N. Karazin Kharkiv National University Teaching course Construction and deconstruction of Soviet human through everyday life experience 1 Modules and themes Theme 1. ... Soviet identity. ... Socio-economic development in the USSR in 1961-1985 years through the prism of everyday life. ... The proposed course aims attracingthe processes of forming the Soviet human through everyday life experience and the resi