... Proof of the Dulac's conjecture: Polynomial vector field in the real plane has but a finite number of limit cycles. The proof of this short statement requires a book [44] published by AMS in 1991; it was the subject of the talk in the ICM-1990. ... The proof of the same conjecture given by Ecalle and based on the ideas of the four authors appeared in a book published in 1992. ... Generation of limit cycles under perturbation of planar Hamiltonian systems. ...

Lectures . ... Home Lectures Lecture Series 2011-2012 Lecture Series 2011-2012 ? тАЬThe Mystery of Beta Lyrae: Astronomical Spectroscopy for AmateursтАЭ ? Fred Chromey . ... Lecture Series 2011-2012 . ... Observing Resources for Amateur Astronomers - Part 1: Beginning Observers . ... A History of the First Forty Years of the Amateur Astronomers Association . ... Amateur Astronomers Medal . ... 2016 Amateur Astronomers Association of New York Designed by Press Customizr Powered by . ...

... Master . Master net Homepage . ... About Space Monitoring Laboratory, scientific directions, instruments, contacts . ... 18.06.2013 . ... J142023.5-485540. ... MASTER OT J142023.5-485540 относится к редкому подклассу . ... Астронома ATel #5144: http://www.astronomerstelegram.org/?read=5144 . ... The brightest MASTER's dwarf nova discovered in Argentina! ... astronomical object - dwarf nova MASTER OT J142023.5-485540 in Lupus . ... record (12.6m) belonged to the dwarf nova in Perseus MASTER . ...

... Visible and Infrared Survey Telescope for Astronomy: Progress Report" . ... The VISTA Project: a review of its progress and lessons learned developing the current programme , McPherson, Emerson, Born & Sutherland, in Ground-based Telescopes, eds Oschmann & Tarenghi, Proc of SPIE, 5489, 638, 2004 . Visible and Infrared Survey Telescope for Astronomy: overview Emerson and Sutherland, in Survey and Other Telescope technologies and Discoveries, eds Tyson & Wolff, Proc of SPIE, 4836, 35, 2003 . ...

... Contact A Problem of an estimation of accuracy of the asteroid CCD observations . The Minor Planet Center supported by the Interntional Astronomical Union is the main office for keeping observational data of the small Solar System bodies and their investigations. ... At Pulkovo Observatory we are estimating an accuracy of the CCD asteroid observations obtained by amateurs and professional astronomers all over the World using the MPC database. ...

... ASRAS HOME . Radio Astronomy . ... About ASRAS . ... Our Observing Site . ... 2015 Mees Tour Guides . ... We're offering Regular Tours (a presentation on astronomy geared to a general audience, followed by a tour of the observatory and (hopefully!) observing of several objects, which may include the Moon, planets, nebulae, star clusters and perhaps galaxies), and Kids' Tours (a more interactive presentation specially aimed at youngsters plus the observatory tour and observing) as in prior years. ...

Об институте . ... Отдел физики и эволюции звезд . ... исследовательская группа нестационарных звезд . ... Научно-исследовательская группа физики звездных и планетных систем . Отдел экспериментальной астрономии . Научно-исследовательская группа ?Спектр-УФ? Научно-исследовательская группа наземной поддержки космических проектов . ... Научно-исследовательская группа динамики малых тел Солнечной системы . ... Терскольский филиал ИНАСАН . ... Наука . ... Российская виртуальная обсерватория . ...

... Ciel Espace, le magazine qui vous guide toujours plus loin . ... Ciel Espace, nouvelle formule, c'est . ... des pages consacr†йes †а la publication de vos photos Mais c'est aussi une vraie communaut†й avec laquelle partager votre passion et nourrir votre curiosit†й. Accueil Le t†йlescope Gemini Sud sтАЩoffre une nouvelle vue . ... A la une . ... 06/04/2016 - Le journal de bord de Thomas Pesquet (21) . 04/04/2016 - Une Terre en formation autour d'une †йtoile proche€а? . ... Etat du ciel . ...

List of Participants Akim Efraim akim@kiam1.rssi.ru Keldysh Institute of Applied Mathematics, Russia Andreyanov Vladimir andre@ asc .rssi.ru ASC , Russia Baan Willem baan@astron.nl ASTRON, The Netherlands, The Netherlands Bajkova Anisa bajkova@gao.spb.ru Central Astronomical Observatory RAS , Russia Bartel Norbert bartel@yorku.ca York University, Canada Bebenin Roman ASC , Russia Beskin Vasily LPI, Russia rbeben@ ...

. V L B I L a b o r a t o r y .

... Sternberg Astronomical Institute , Moscow University . ... Present edition unites two parts of Catalogue of interacting galaxies by B.A.Vorontsov-Velyaminov: the first part (Part 1) containing 355 systems was published in 1959 [1] and the second one (Part 2) with 497 objects - in 1976 [2].Thus two published parts of Catalogue include 852 interacting systems. ... All new of them (1162 by number) were taken from the comments to the galaxies in Morphological catalogue by Vorontsov-Velyaminov et al.[ ...

International Workshop NAROO-GAIA "A new reduction of old observations in the Gaia era", Paris Observatory, June 20-22, 2012 Registration of participants of Workshop NAROO-GAIA Before the first meeting OPENING OF THE WORKSHOP The natural planetary satellites are observed since centuries in order to understand their dynamics and their evolution. ... Science results, reports, data mining. ... L. Beauvalet: Strong need of a new reduction of Pluto's old observations W.Thuillot: very important. ...

... SUN MOON MERCURY VENUS MARS, JUPITER SATURN . ... Jupiter . ... August 2007: Gravity's bad side, an ancient observatory, and Jupiter unveiled . ... Astronomy's August 2007 issue takes readers from Jupiter on NASA's New Horizons spacecraft to the Americas' oldest observatory in Peru. July 9, 2007 . ... The August 2007 Astronomy cover story points to Earth's ocean tides, Jupiter's comet-splitting power, and galaxies that strip stars away from their neighbors to illustrate gravity's sinister side. ...

... May 27, 2009 - The CORONAS-PHOTON has registered the formation of the Sun's southern belt of activity . The Russian TESIS/ CORONAS-PHOTON Solar Observatory, which has been working in orbit since January 30th, 2009, has photographed one of the most important events in the build up to the upcoming solar cycle - the formation of our star's new southern belt of activity. The first magnetic fields of the new cycle in the southern hemisphere appeared on the Sun's surface on May 23-24th. ...

... Phys., 45, 409-419 10.02.2010 , . PLHR: o 50 / 60 / 100 / 120 o MLR: o 50 / 60 / 100 / 120 o o , - PorojДrvi 17/11/1993 Total power -5 dB 1,8 -15 1,7 -25 1,6 14.09 14.11 Time(UT) -35 14.13 Frequency (kHz) 4,2 4,1 4,0 07.30 -30 -40 07.45 Time(UT) 07.00 10.02.2010 Frequency (kHz) PorojДrvi 25/01/1993 Total power 4,3 -20 dB , . ... 10.02.2010 , . ... f1 < < fn < fn+ 1 20 ms 128 Frequency (kHz) 1,8 1,8 Frequency (kHz) 4 dB 0 -20 1,7 1,7 1,6 0 10.02.2010 30 Time(sec) 60 1,6 -40 0 0,3 Time(sec) 0,6 , . ...

announces . seminars & conferences . Zelmanov' seminar . scientific & engineering staff . students & postgraduates . useful links . projects . articles . catalogs & databases . algorithms & programming . 1 mas (отчет о первой астрометрической школе) . Труды ГАИШ . history of Moscow astronomical observatory . photo gallery . miscellaneous . Some pages are now in Russian only. editor valera , . librarian gribko .

... Formation of Galactic Subsystems in Light of the Magnesium Abundance in Field Stars. ... The Thin Disk(2006) . ... I. The Thick Disk. ... A Compiled Catalog of Spectroscopically Determined Elemental Abundances for Stars with Accurate Parallaxws. I Magnesium. ... Stars of extragalactic origin in the solar neighborhood.( ... Evidence for age delay between the formation of the old halo and the thick disk(2000) . ... Tel:work(8632)433985 . home(8632)333178 . Fax:(8632)434044 . ...

ASTRONOMY IN UKRAINE - 2000 AND BEYOND . ... Kyiv, Ukraine, 5-8 June 2000 . ... The primary objective of the conference is to consider the integration of astronomical research in Ukraine into the international astronomy. ... VLBI for Astronomy and Geodynamics Convenors: Kees van't Klooster (The Netherlands), Leonid M. Litvinenko (Ukraine), Chopo Ma (USA). ... Planetary Astronomy Convenors: Teodor Kostiuk (USA), Robert Nelson (USA), Yuri Shkuratov (Ukraine). ... The "general" registration fee: 100 USD. ...

University Satellites and . Space Science Education . ... THE UNITED NATIONS BASIC SPACE SCIENCE INITIATIVE Hans J. Haubold United Nations Office for Outer Space Affairs, Vienna International Centre, A-1400 Vienna, Austria (hans.haubold@unvienna.org) Pursuant to recommendations of the United Nations Conference on the Exploration and Peaceful Uses of Outer Space (UNISPACE III) and deliberations of the United Nations Committee on the Peaceful Uses of Outer ...

... More on 51 Peg: . The discovery of a Jupiter--mass planet in orbit around the solar--type star 51Peg has been reported by Michel Mayor and Didier Queloz (Geneva Observatory) on October 6th at the 9th Cambridge workshop on "cool stars, stellar systems, and the sun" held at Florence (Italy). ... Recall that the measurements of radial velocity only yield v sin i which in turn gives us M sin i. For most values of i, sin i will be greater than 0.5 and this gives a mass estimate of 0.5 Jupiter masses. ...