Astronomy Picture of the Day . Geminids in 2007 . ... 3.01.2008 . ... Of course, the streaks are meteor trails from the annual Geminids meteor shower. ... Under good conditions some skywatchers reported well over 100 meteors per hour near the December 14/15 peak for the Geminids in 2007 . ... APOD Editor's Lecture: January 4th - American Museum of Natural History . ... January 2008 . ... Publications with keywords: meteor shower - asteroid . Publications with words: meteor shower - asteroid . ...

... Observing . ... Solar Observing . ... April 3 (SUN) - Solar Observing, Central Park , Manhattan . ... APRIL'S SKY . ... Lecture Series at the American Museum of Natural History The Amateur Astronomers Association is proud to present an astronomy lecture series from October through May each year for our members and the .. ... The€аAmateur Astronomers Association of New York€аwas organized in 1927 to promote the study of Astronomy, emphasizing its cultural and inspirational value. ...

Astronotes Armagh Planetarium's Stellar Blog! ... Stars . ... Telescopes and Observatories . ... The majestic star-forming region in the Lagoon Nebula. The pale ring to the right is an internal reflection in the telescope.€а (Image credit: ESO/ VPHAS+/ V. Kalari and J. Vink (Armagh Observatory) . ... The 18 component images were further processed twice. ... Venu and his colleagues use images like this to identify individual young forming stars in the Lagoon Nebula and determine their ages. ...

... Each day we feature a different image or photograph of our fascinating universe, along with a brief explanation written by a professional astronomer. December 27, 1995 . Nova Cygni 1992 . Credit: NASA , ESA , HST , F. Paresce, R. Jedrzejewski ( STScI ) . ... Dubbed Nova Cygni 1992, this event most probably occurred in an accretion disk binary system . ... Nova Cygni 1992 was the brightest nova in recent history - at its brightest it could be seen without a telescope. ... About APOD | ...

... His talk is entitled "The Small Bodies of the Outer Solar System" and will describe some of the intruguing objects and mysteries of that region, such as the comets, the Edgeworth-Kuiper Belt Objects, TNOs, Plutinos, etc. It's on WEDNESDAY 2 DECEMBER, at 7.30 p.m., in the Bell Lecture Theatre, Physics Building, Queen's University, Belfast. ... Tuesday, 1 December 2009 16:02 . International Year of Astronomy, Ireland National Node . ...

... Early studies of PMS stars focused on T associations, especially Taurus-Auriga. However, one might expect low mass star formation to be different in OB associations. ... He identified Orion OB1a as the stars northwest of the belt. Orion OB1b is composed of the stars near the belt, including the belt stars and Orionis. ... He finds no perceptible distance change within the Orion OB1b association and finds the distance modulus to be 7.8 and 7.9 for Orion OB1a and OB1b respectively. ...

Astronomes Amateurs du Luxembourg a.s.b.l. " We bring the Universe to you ! Founded in 1971 by a group of enthusiasts and star aficionados, our association is now counting more than 130 members.As a national association we attract hobby astronomers from the whole country to our regular night-sky observations and to the meetings in our club at Dudelange. ... by topic : PDF File Download (360KB) . ... Article about AAL in "Le Quotidien" newspaper of Juli 21 2005 - PDF File Download (132KB) . ...

Application of IVOA software tools for radio sources investigation Zhelenkova O., Kopylov A., Chernenkov V. The interrelationship between the objects of astronomical catalogs in the different ranges of electromagnetic spectrum and their association into the real astrophysical source has obvious scientific interest. ... We used NVSS as the reference coordinate catalog. ... For 60% of radio sources identified with the objects of the radio catalogs we discovered optical candidates in SDSS survey. ...

... Solar Data: f.e. X-ray . Night Sky Live . ... Heavens-Above: Sky chart, Satellites, Iridiums and astronomical objects For Moscow For SAO Baksan . ... ESO-MIDAS page . ... Tutorials for Astronomy . ... Asteroid and Comet Hazard . ... Observable Comets: This page lists links to orbital elements and ephemerides of (potentially) observable comets. ... Leonid page - a lot of information for years Comets and Meteor Showers . The American Meteor Society . ... North American Meteor Network Home Page . ...

Accretion torques in windaccreting pulsars Nikolay Shakura Sternberg Astronomical Institute Moscow, Russia K.Postnov (SAI), D. Klochkov, V. Doroshenko, V. Suleimanov (IAAT), L. Hjalmarsdotter (SAI) December 2010 HEA-2010 1 Outline Introduction: disc and quasi-spherical accretion Settling accretion regime Spin-up/spin-down torques Specific pulsars Conclusions December 2010 HEA-2010 2 I. Disc and quasi-spherical accretion December 2010 HEA-2010 3 Disc accretion Shakura N.I. Astron. ... 2010 15 III. ...

Russian . Main . News . ... Minutes of the Telecon on January 17, 2012. ... News of the RadioAstron mission on the Lavochkin Association site up to September 15, 2011 (in Russian). News of the RadioAstron mission up to September 3, 2011. News of the RadioAstron mission on the Lavochkin Association site (in Russian). News of the RadioAstron mission up to August 18, 2011. ... Second version of the RadioAstron Mission Operations Handbook ( in Russian )is placed on the project site . ...

ARCSAT ID NUMBER: AS08 DESCRIPTIVE TITLE: Short Term Variability for Stars of Similar Temperatures but Different Luminosities PI: Tiffany Pewett OBSERVER(S): Tiffany Pewett (GSU), Michele Silverstein (GSU), Todd Henry (GSU) UNCERTIFIED/UNTRAINED OBSERVERS: COLLABORATORS: Wei-Chun Jao (GSU) CONTACT INFORMATION: Tiffany Pewett, pewett@astro.gsu.edu, 419-460-0072 TIME REQUESTED: 1. ... December 15 - December 21 One week is requested to observe ~14 stars for photometric variability. ...

The efficiency of interaction of radiation with a particle and hence its optical properties depend on the particle chemical composition, size, shape, structure, etc. ... Particle size expressed in units of the wavelength of incident radiation, together with chemical composition, most strongly affects the optical properties of a scatterer. ... There are many methods to solve the light-scattering problem for a homogeneous spheroid (our survey of the light-scattering methods see here ). ...

... As modern observatories evolve to production units delivering data products and calibrated scientific data to the end users, new challenges arise in assessing the quality of data products. ... Taking the analogy of speed control on a motorway we can describe the system as a device (radar) collecting measurements of the system performance (passing cars). ... One of the direct applications of quality control is the verification of instrument performance based on the analysis of calibration exposures. ...

... International Astronomical Union . Russian Foundation for Basic Research . Abastumani Astrophysical Observatory . Australian Astronomical Observatory . ... Byurakan Astrophysical Observatory . Hartebeesthoek Radio Astronomy Observatory . ... National Radio Astronomy Observatory . Nobeyama Radio Observatory . ... Pushchino Radio Astronomy Observatory . ... AGU journals . ... Astronomy and Astrophysics Springer . ... Astronomy Letters (ПАЖ) . ... Astrophysical Journal Letters . ...

SAI VO . ... SAI CAS . ... Access . ... We present the results of the development of Sternberg Astronomical Institute Catalog Access Services (SAI CAS) project - the first and the only project in Russia, which provides online access to the major astronomical catalogues and different services on top of them. ... SAI CAS is an open-source implementation of the general Catalogue access service (influenced by SDSS CAS CASjobs project), based on original algorithms and open-source software. ... SAI MSU | ...

Authors: V.A. Marsakov , T.V. Borkova , . ... It is shown that general populations of globular clusters and metal-poor field stars are components at least of three subsystems occupying different volumes in the Galaxy. The thick disk and proto-disk subsystems are genetically associated with the Galaxy. ... It is argued that heavy-element enrichment and the collapse of the proto-galactic medium occurred mainly in the period between the formation of the proto-disk halo and thick disk subsystems. ...

... Fortran . Storage rules Dummy argument is a quantity in the specification of a procedure, function or subroutine. Actual argument is a quantity in the call of a procedure, function or subroutine. ... Becomes 101 END PROGRAM EXAMPLE SUBROUTINE SUB(X, Y, Z) IMPLICIT NONE REAL, INTENT(IN) :: X REAL, INTENT(INOUT) :: Y REAL, INTENT(OUT) :: Z Y = Y**2 Z = X + Y END SUBROUTINE SUB In Fortran there is really only one kind of argument usage, called argument association. ...

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