... All the galaxies are divided into 4 groups depending on the environment type; every subsample contains more than 10 galaxies. ... An effect of environments is seen both for the nuclei and for the bulges: if we consider the clusters (Virgo and Ursa Ma jor) and group centers as dense environments and the field and group periphery as sparse environments, then in the dense environments the stellar populations of S0s are in average older by 4­5 Gyr than in the sparse ones. ...

Blackholes2 Forum Message . Forums: . Atm ћ Astrophotography ћ Blackholes ћ Blackholes2 ћ CCD ћ Celestron ћ Domes ћ Education . ... Discussion Forums | ... Hindu Scripture Says There Are 46 Million Hairs . Forum List | ... Post Message | ... www.astronomy.net . About Astronomy Net | Advertise on Astronomy Net | ... Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

. Добро пожаловать на страницу . АСТРОНОМИЧЕСКОГО ОТДЕЛЕНИЯ . ФИЗИЧЕСКОГО ФАКУЛЬТЕТА . МГУ им.М.В.Ломоносова! . Новости . Расписание . Спецкурсы . Информация . Кафедры . Студенты и аспиранты . История . Контакты . Формирование системы инновационного образования в МГУ им. М.В. Ломоносова . Общая информация . Сотрудники . Научные направления . (C)Астрономическое отделение Физического факультета МГУ им.М.В.Ломоносова - 2006.

... Hypervelocity Stars Ejected from the Galactic Center . ... In his talk, Hypervelocity Stars Ejected from the Galactic Center, Dr. Brown will discuss how the observed velocity and spatial distributions are linked to the ejection mechanism. The hypervelocity stars place quantitative constraints on the types of stars orbiting near the central black hole and the history of stellar interactions with the black hole. ... Apr . ... Copyright (c) Amateur Telescope Makers of Boston, Inc. ...

... Our Solar System is a stellar-planetary unit consisting of the Sun ; the nine planets and their satellites; the asteroids, comets, and meteoroids; and interplanetary dust and gas. The dimensions of this system are specified in terms of the mean distance from the Earth to the Sun, called the astronomical unit (AU). ... The boundary between the solar system and interstellar space - called the heliopause - is estimated to occur somewhere beyond 120 AU. ... Earth . ...

Next: Observational Data Previous: Rotation Periods of PMS Stars . ... 1993,1995; Grankin 1993, 1994; Prosser 1993, 1994, 1995; Adams 1995; Choi & Herbst 1996) cover a wide range of stellar ages, but with exception of the ONC, the nTTs have been underrepresented. ... Because some nTTs may have very recently lost their disks, they could be stars undergoing rapid change in their rotational properties. ... 1996). In this dissertation, I will discuss the results of observations of nTTs in Orion. ...

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. My astronomical research interests center on galaxy structure and evolution. Current topics include: . Polar-ring and interacting galaxies (see also new catalogue ) . Galaxy warps: statistics, properties and origin . Spiral galaxies at z~1: radial and vertical structure of stellar disks, statistics of interactions . Surface photometry and kinematics, dynamical modeling . Observational cosmology . Joomla Counter since Sep 1997

... GSAOI Home . ... Science . ... For example, among the Milky Way's dE companions we see systems with dominant old populations, systems with minor intermediate-age (age ~ 2 to 10 Gyr) components, and systems where the intermediate-age component dominates the old stars. ... This variety of star formation histories is not restricted to the Galaxy's companions. ... To make progress in understanding the processes that govern dwarf galaxy evolution, we need to study systems beyond the Local Group. ...

... Bad Astronomy . ... Bitesize Astronomy . ... Last week's Snack talked about how black holes can affect the environment around them in such a way as to be very bright . ... It's a common misconception that black holes always have matter swirling into them. ... As this matter gets closer and closer to the black hole it piles up and a large, fairly flat disk forms. This is called the accretion disk , because matter from this disk accretes (that is, falls in) on the black hole. ... 2008 Phil Plait. ...

... Subject and Problems of Stellar Astronomy. ... Plane of Galaxy, Methods of Its Location Determination. ... Stars Distances. ... Other Methods of Stars Distances Determination. ... Tangential Velocities, Their Determination by Self-Motions. ... Determination of Solar Apex and Spatial Velocity by Radial and Spatial Velocities of Stars. ... Features of Orientation and Parameters of Peculiar Stellar Velocities Ellipsoid. ... General and Selective Light Absorption in Galaxy. ... Darc Clouds in Galaxy. ...

Main Program Travel Where to go in Moscow Information . ... The 2014 year marks the 100th anniversary of Yakov Zeldovich . ... John Carlstrom (University of Chicago) . ... Lyman Page (Princeton University) . ... The conference will be held at the Space Research Institute (IKI) in Moscow, Russia, on June 16-20, 2014 . ... International Conference: Cosmology and High Energy Astrophysics (Zeldovich-90) 20-24 Dec 2004, Moscow, Russia . ... 2014 Space Research Institute, Moscow Русская версия ...

Full-Text Search . ... astro-ph . ... SAI VO . Search sort results by Date Relevance . ... Whitespace-separated words are treated as AND ed. Show 10 50 100 articles per page in Full Compact mode . ... 319 co-authors. Median position in authors list is 176,0 . ... Dmitry, S.. ... Ivanov, Michael A.. ... Petri, Michael. ... von Neumann-Cosel, P.. - . von Schmid, M.. ... Wimmer, C.. ... Yakorev, Dmitry. ... SAI MSU . ...

Arecibo Radio Telescope - National Science Foundation - Budget Cuts - New York Times 11/20/2007 07:25 AM November 20, 2007 A Hazy Future for a `Jewel' of Space Instruments By KENNETH CHANG The next time an unexpected comet shows up in the inner solar system, Amy J. Lovell may not get time at the Arecibo radio telescope in Puerto Rico to observe it before it swings back out. ... Something else may also weigh in Arecibo's favor: it may be much cheaper to keep it open. ...

. Главное меню . Введение . Введение в задачи практикума STEV . Ознакомление . Знакомство с устройством задачи STEV . Расчет моделей . Расчет моделей звезд и эволюционных треков . Задания . Учебные задания . Теория . Краткая теория расчета эволюции звезд . Наблюдения . Сравнение теоретических расчетов с наблюдениями . Литература . Рекомендованная литература .

... Using a simple 2-D Gaussian Point Spread Function (PSF) on a constant (flat) sky background, I derive a theoretical photometric and astrometric performance model for analytical and digital PSF-fitting stellar photometry. ... The photometric performance is maximized when either the effective background area or the effective-background-level measurement error is minimized. ... An important, but frequently ignored, noise source is the uncertainty of the measurement of the effective background level ( )...

... Spacecraft that will search for planetary systems around 40 million stars and observe the largest explosions in the universe have been chosen as the next two missions in NASA's medium-class Explorer (MIDEX) program. ... The first mission, to be launched in 2003, is the Swift Gamma Ray Burst Explorer, a three-telescope space observatory for studying gamma ray bursts. ... During its three-year mission, Swift will also survey the sky for new black holes and other sources of cosmic gamma rays. ...

... Общероссийская неделя "Астрономия на тротуаре" - 15-17 апреля . ... Практическая астрономия ? Астрономия и компьютеры (Модераторы: Deimos , Ed_Vazhorov ) ? Stellar Compass . ... Сообщений: 7 603 . Рейтинг: +65/-32 . 26.04.2006 [09:36:45] ? ... Записан . ... Сообщений: 1 351 . ... Ответ #1 : 26.04.2006 [10:04:59] ? Книга "Астрономия с персональным компьютером", программа FOTO. ... Последнее редактирование: 26.04.2006 [11:43:01] от anovikov ? ... Сообщений: 4 904 . ...

I/208 90000 Stars Supplement to the PPM Star Catalogue (Roeser+ 1994) ================================================================================ The 90000 Stars Supplement to the PPM Star Catalogue Roeser S., Bastian U., Kuzmin A.V. =1994A .. ... These stars constitute the 90,000 Stars Supplement to PPM. ... III and IV, positions and proper motions of 197179 stars south of -2.5 degrees declination. ... Star catalogue of positions and proper motions north of -2.5 declination. ...

... Field of research: Extragalactic astronomy. ... NASA Astrophysics Data System (ADS) Abstract Service . ... CADC Home Page . ... CCD Images of Galaxies . ... RUSSIAN LINKS . ... UA Astronomy Personal Home Page - Bill Keel . ... The Shape of the Rotation Curves of Edge-on Galaxies, by A.V.Zasov and A.V.Khoperskov, 2003. ... A Thickness of Stellar Discs, by A.V.Zasov, and D.V.Bizyaev, 2003 . Minimum Velocity Dispersion in Stable Stellar Disks, by A.V.Khoperskov, A.V.Zasov, and N.V.Tyurina, 2003 . ...