Galaxies are diffuse objects which are imaged against a background of finite brightness and noise. Galaxies which have the maximum contrast with respect to this background are the ones that are first discovered. ... These galaxies have been missed to date but active surveys for them are underway. ... In this page we present several examples of these newly discovered Low Surface Brightness galaxies as well as examples of high surface brightness galaxies. ...

Общая Астрономическая Конференция > Практика > Астрономические наблюдения > Полярное сияние! Взгляды на небо! ... Просмотр полной версии : Полярное сияние! ... Только что мне позвонил Стас Короткий и сказал, что над Москвой наблюдается полярное сияние, и притом разноцветное. ... В Питере с 18-го по 31-ое марта стояли ясные ночи (и какие ночи - сказка!), а ночь 31.03/01.04 как раз зятянуло напрочь http://www.starlab.ru/ubb/frown.gif Думается, и над нами могло бы быть. ...

... A database on solar active regions has been implemented in IDL (Interactive Data Language). ... Full-disk 17 GHz radio maps produced by the Nobeyama Radioheliograph provide the basis for the database. Researchers of solar activity often need to access solar active region data. ... So far, we have created an IDL-based database on daily active region data from 1992 July 1 to 1994 December 31 (NOAA 7213 thru NOAA 7821) 2 . ... number of active regions visible on the disk; . ... IDL 1 . ...

Title: A Dark-Matter Spike at the Galactic Center? Authors: Piero Ullio , HongSheng Zhao , Marc Kamionkowski . ... Title: The Galaxy Environment of Quasars in the Clowes-Campusano Large Quasar Group at z~1.3 . ... Title: The Galaxy Environment of a Quasar at z=1.226: A Possible Cluster Merger . ... 16 matches for the search pattern galaxy environment . The URL for this page is: http://xxx.itep.ru/find/astro-ph/1/galaxy+environment/0/1/0/past,all/0/0 www-admin@xxx.lanl.gov ...

This intermediate course is designed as a comprehensive introduction to one of the most active and attractive fields of contemporary mathematics with a remarkable range of applications to Lie groups, geometry, physics and coding theory. ... Cocompact discrete groups. ... Discrete reflection groups in spherical,euclidean and hyperbolic geometries. ... Classification of the finite reflection groups. ... Finite Coxeter polytopes in hyperbolic space and associated cocompact discrete reflection groups. ...

GCVS Research Group: . Recent publications . Kazarovets E.V., Samus N.N., Durlevich O.V., Kireeva N.N., Pastukhova E.N., The 81st Name-List of Variable Stars. ... Kazarovets E.V., Samus N.N., Durlevich O.V., Kireeva N.N., Pastukhova E.N., The 80th Name-List of Variable Stars. ... Samus N.N., Kazarovets E.V., Kireeva N.N., Pastukhova E.N., Durlevich O.V. General Catalogue of Variable Stars: Current status and new Name-lists Odessa Astronomical Publications, 2010, V. 23, p. 102-105. ...

... not more than 2 participants in the younger group. not more than 1 participant in the senior group. prizewinners (I-st or II-nd prize) of the previous IAO not older than the age limit who did not used such a possibility before. exactly 2 team leaders (specialists in astronomy or astronomy education). ... For the countries, starting their activity in the International Astronomy Olympiad and for the students participating the first time in IAO the age limits for the groups for IAO-2005 are defined as:...

Data Archive . Video-records archive . ... 1997 | ... Time (UT) Counter Remarks _______________________________________________________________________________ 05.01. 10:29:17 2:06:42 scan disk 11:58:23 2:11:19 active regions 06.01. 09:49:51 2:12:17 scan disk 10:56:24 2:19:10 active regions 12.01. 09:39:12 2:19:59 scan disk 10:03:41 2:27:51 active region 10:05:09 2:28:34 filament 10:07:17 2:29:10 ...

... Basic Research results General information Main characteristics of the Radio telescope Observing programs General view of the antenna array Main research areas Principle of generation of radio images Radio telescope's beam Receiving systems Main characteristics of the base receiving-recording complex Calibrations Data archive and databases Publication of data Possibilities of observing the structure and dynamics of microwave activity SSRT - Research results . ...

... Tonight's Sky . ... The Magazine . ... Observing . ... Gravitational wave search provides insights into galaxy evolution and mergers . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... Astronomy for Kids . ... Local Group . ... Why do sunspots appear in groups? ... Get instant access to subscriber content on Astronomy.com! ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ... Astronomy Magazine . ...

... The distributions of orbits eccenttricities and of angular momenta for the halo stars and the old disk population are considered. The distributions have gaps separating the halo from the disk and dividing the halo population into three groups. ... Рассмотрены распределения звезд гало и старого населения диска по величине эксцентриситета орбит и угового момента. Распределения имеют провалы, отделяющие гало от диска и делящие населения гало на три группы. ...

... 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. ...

The nasa.gov site requires that JavaScripts be enabled in your browser. ... Contact NASA . ... The following are astronauts who are employed at NASA. Astronaut assignments and category definitions (e.g., "active" astronauts, "management" astronauts) are contained in a separate Flight Operations Directorate (FOD) policy letter. Astronaut . ... Acaba, Joseph M. 2004 . ... Aunon, Serena M. 2009 . ... Barratt, Michael R. 2000 . ... Burbank, Daniel C. 1996 . ... Cassada, Josh A. 2013 . ... 1998 . ...

IAU page . Commission 5 page . ... The IAU Division XII Commission 5 Working Group Libraries business meeting at the IAU General Assembly was held Monday, 3 August 2009 . ... Data curation: Keeping data over time . ... The IAU Commission 5 Working Group on Libraries exists to foster communication and understanding between research astronomers and the librarians who support them. ... Chris Erdmann gave presentation on Facility Identifiers. тАв Tracking use of ESO data through published papers . ...

... Most Important Journals . Less Popular Astronomical Journals . Physics . Space, Selectial mechanics, .. Russian Journals . ... Astrophysics & Astronomy . ... Astronomical Journal . ... New Astronomy . ... Publications of the Astronomical Society of the Pacific . ... STScI News . Space Telescope Insitute Newsletter . ... Journal of Astronomical Data . ... Journal of High-Energy Physics (mirror in CERN ) [astro, grav, hi-energy .. ... Journal of Experimental and Theoretical Physics . ...

... 2004. ... Astrophys. J. 1999. ... Fan Y., Fisher G.H., McClymont A.N. Dynamics of emerging active region flux loops // Astrophys. ... Howard R.F. Axial tilt angles of sunspot groups // Solar Phys. 1991. ... Langcope D.W., Fisher G.H. The effect of convection zone turbulence on the tilt angles of magnetic bipoles // Astrophys. ... Axial tilt angles of sunspot groups // Solar Phys. 1999. ... 10, 60 120 . ... 2005 . ... SS433. ... 2 I - - 4 II 8 III 11 IV 8 2005 . ... SS433 23.05.2005 . ...

e-mail: podgorny@inasan.ru . Institute of Astronomy RAS . ... Spectrum of solar flare protons // Journ. ... The active region magnetic flux correlation with flare appearance. ... Podgorny A. I., Podgorny I. M. Solar Flare Numerical Magnetohydrodynamic Simulation and Solar Flare Model. ... Podgorny A. I., Podgorny I. M. MHD simulation of magnetic field configuration above the active region NOAA. ... Podgorny I. М., Podgorny A. I. The active region magnetic field association with solar flares. ...

... A group of children sang Russian folk songs. The songs were different: one was about the celebration of "Masleniza", another one was about our Motherland. Our guests really liked a young boy who played "balalaika". ... It helped British girls to learn more about our country, our traditions and culture. ... We also saw Russian Ballet. A nice beautiful girl was dancing for our guests. ... Last year when another group of British teenagers came to our school she also danced for them. ...

home publications > mercury . ... Publications of the ASP (PASP) . ... Exploring Invisible Skies . ... One of the tools these students are using?a radio telescope?explores an invisible part of the electromagnetic spectrum, radio waves. ... From listening to music on the radio to talking on our cell phones, radio waves are the means used to get information across large distances. ... Radio waves also give us information about the Universe complementing information obtained at other wavelengths. ...

... Circumstellar disc of beta Pictoris: constraints on grain properties from polarization. To appear in the Astronomy & Astrophysics . abs , src , ps ] . ... Dust influx to Titan from Hyperion . ... abs ] . ... Characteristics of bulges and disks in interacting galaxies . ... Dust grains around Herbig Ae/Be stars: porous, cometary-like grains? ... To appear in the Astronomy & Astrophysics Supplement . ... Finally, Links may lead you to more options (e.g. via the LANL preprint system). ...