... In this paper we present the results of detailed B, V, R, I, and H study of the isolated nearby blue compact dwarf (BCD) galaxy NGC6789. Judging from the literature the observed galaxy has not been resolved into stars up to now. ... The distance of the galaxy, estimated from the tip of the red giant branch (TRGB) is 2.1 Mpc which places NGC6789 close to the Local Group. ... Key words: nearby galaxies: dwarf galaxies (NGC 6789): distance moduli: star content . ... Distance. ...

The Astronomy Shop . ... AstroGuide | ... Shop | ... Posters | The Andromeda Galaxy - High Resolution Poster Image (Paper Edition) . ... This poster is also availiable in a laminated edition - see The Andromeda Galaxy (laminated). ... www.astronomy.net . About Astronomy Net | Advertise on Astronomy Net | ... Unless otherwise specified, web site content Copyright 1994-2016 John Huggins All Rights Reserved . dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

... arXiv.org . astro-ph . ... We fit the near-infrared to radio spectral energy distributions of 30 luminous and ultra-luminous infrared galaxies with pure starburst models or models that include both starburst and AGN components to determine important physical parameters for this population of objects. In particular we constrain the optical depth towards the luminosity source, the star formation rate, the star formation efficiency and the AGN fraction. ...

... Galaxy Evolution Explorer (GALEX) . ... Searching for SZ clusters . ... Baryon content of galaxy clusters and cosmology . ... 3 sigma peaks: Observational Signatures of High Redshift Galaxies and Low Redshift Clusters . CLUSTERS OF GALAXIES . ... Clusters of galaxies seen in X-rays: war and peace . ... Chandra X-ray Observations of Clusters/Groups/Galaxies . ... Common timing features in neutron stars and black holes . ... X-ray luminosity function of low-mass X-ray binaries in galaxies . ...

... The circumnuclear GASEOUS disks are often decoupled from the circumnuclear stellar disks and are even stronger inclined to the outer disk planes; in fact, we have found a considerable `population' of inner polar rings. Inner gas polar rings are found as in spiral galaxies with the massive outer gas disks co-planar to the main symmetry planes (e.g. NGC 2841, Sil'chenko et al. 1997, and NGC 7217, Sil'chenko & Afanasiev 2000) as well in many lenticular galaxies (Fig. ...

... KENTAUR . ... HOME . ... ABOUT LOMO . PRODUCTS . ... NIGHT VISION DEVICES . ... Home Products Night Vision Devices Kentaur . See the world differently with the Day/Night Vision Scope — Kentaur . Half Night Vision Scope, Half Telescope — Kentaur is the choice, day or night — 24 hours a day! ... Combination Day/ Night Vision Scope . Day” Channel : features LOMO’s world-renowned Maksutov design utilizing mirrors, instead of lenses . ... NIGHT… . ... 847) 215-8800, Fax: (847) 215-9073 . ...

... Hierarchy and stability 3. Stability criteria for triple systems 4. ... The results for selected systems with weak hierarchy (physical properties of components) System HD 40887 AB+CD HD 76644 AB+CD HD 217675 AB+CD HD 222326 A?+BC HD 284419 A+BC Spectral types K5V, M0V, K4V, ?? ... More accurate results for selected systems HD 217675/6 ( And) Quadruple system More accurate results for selected systems HD 217675/6 Pair B1B 2 More accurate results for selected systems HD 217675/6 (Zhuchkov et al. ...

... A model for the chemical evolution of a disk galaxy is presented. The model reproduces all the basic . ... investigations of the star formation history. ... the galaxyЫand incorporating a delay in the onset of star formation make it possible to model different scenar- . ios for the evolution of a galaxy's luminosity. ... evolution of massive galaxies. ... of reconstructing the star-formation history and galactic luminosity from observations of galaxies at different . ...

P.N. Lebedev Physical Institute Astro Space Center Russian Academy of Sciences S.A. Lavochkin Association, Roscosmos RADIOASTRON The Ground ­ Space Interferometer: radio telescope much larger than the Earth The Spectr-R Project http://www.asc.rssi.ru/ radioastron / High- Resolution HI 21 cm Mosaic of M 33 galaxy GENERAL OUTLINE The RadioAstron ... Such forecast could be used to prepare a long time-scale schedule of scientific observations. ...

ATMoB "Galaxy Observing Award " Guidelines Purpose: To promote observing among the membership of the Amateur Telescope Makers of Boston through participation in the Galaxy Observing Awards program. ... Examples of elliptical galaxies: M49, M59, M60, M87, NGC 4125. Limiting Magnitude Assessment: Spirals: A spiral galaxy consists of a flattened disk, with stars forming a (usually two-armed) spiral structure, and a central concentration of stars known as the bulge. ...

... WORKSHOP "STELLAR ATMOSPHERES" . THE CHEMICAL AND DYNAMIC EVOLUTION OF STARS AND GALAXIES" . ... Chernomorka , Odessa , Ukraine . ... Modeling and interpretation of the stellar spectra of the usual and peculiar stars. Elemental abundances in the stars of different types and populations of the Galaxy. Chemical evolution of the stars and galaxies. ... Andrievsky S.M. (OAO ONU, Odessa, Ukraine) . ... CHEMICAL and DYNAMIC EVOLUTION STARS and GALAXIES" . ... Odessa mailto:astro@paco.odessa.ua . ...

The divisity of galaxies. The galaxies are the giant (to hundred of billions of stars) star systems, where the stars are connected by gravitation laws with each other. ... Ther galaxy NGC 3031 . ... Each spiral galaxy has a core a flat disk where the spiral brancher locate. The stars and interstellar substance of spiral galaxies rotate around the core. ... In normal galaxies, such as our Galaxy, the great brightness of the core is accounted for the high concentration of stars. ...

... S.P. KOROLEV ROCKET AND SPACE CORPORATION ENERGIA . ... OAO RSC "Energia" . ... Company's History . ... Brief History of Rocket and Space Technology . ... Flights Chronology . ... ISS Russian Segment . ... Sea Launch . ... Launches Chronology . ... Land Launch . ... 29L were used to launch the Galaxy 19 SC. ... Making the Rocket Segment systems ready for the launch site activities; . ... SL29 with the Galaxy 19 SC was launched. ... Contribution of RSC Energia to the Russian Rocket-Space Technology ....

To main of Laboratory . The research work and design of optical and optical-electronic devices are carries out by laboratory staff: . ... Lens: . ... In the layout 1 prism systems perform functions of dispersive element, corrector of aberrations, optical reducer. ... Spectral range 200 - 400 nm; . ... Back Forward . ... The main corrector's function are compensation of field aberrations of the main spherical mirror of a telescope (diameter of 600 mm, f'=1200 mm) and increase aperture ratio. ...

The idea of component-oriented programming is that in the course of implementation of various software projects a programmer (or a programmers team) accumulates a library of reused software fragments that are used in different projects. ... To solve such problems there are some special syntax means in Actor Prolog that support component-oriented programming. ... A package in Actor Prolog is a set of classes linked by implication. ... Actor Prolog supports visual component-oriented programming. ...

... 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 . ...

... Ciel Espace, le magazine qui vous guide toujours plus loin . ... des actualit†йs . ... les plus belles images de l'Univers d†йcrypt†йes pour vous . ... 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 Les galaxies barr†йes sont moribondes . ... Les galaxies spirales dont une barre d'†йtoiles traverse le centre (dites barr†йes) sont plus vieillissantes que celles d†йnu†йes de barre. ...

... Bad Astronomy . ... I got a lot of questions this week but galaxies really topped the list of topics. ... MaryCCC, Jack Yomens, Mario Ramero, Dan Holland, Michelle Turner, and Joshua C. They asked me what a galaxy is, can I see one using my own telescope, and, I know we live in a galaxy, but how do we know what kind it is? ... If we lived in an elliptical galaxy, we were somewhere, you know, in this big ball of, of stars, everywhere we look in the sky, we'd see stars scattered all around us. ...

... Astronomy news . ... NASA's Spitzer Images Out-of-This-World Galaxy . ... It is spiral-shaped like our Milky Way, with long, spindly arms of stars. The "eye" at the center of the galaxy is actually a monstrous black hole surrounded by a ring of stars. In this color-coded infrared view from Spitzer, the area around the invisible black hole is blue and the ring of stars, white. ... The ring around the black hole is bursting with new star formation. ...

... NGC 4631 Whale galaxy (Caldwell 32) - спиральная галактика с перемычкой Кит (Arp 281) в созвездии Гончих Псов (Canes Venatici) .. ... Просмотр полной версии : NGC 4631 Whale galaxy (Caldwell 32) - спиральная галактика с перемычкой Кит (Arp 281) в созвездии Гончих Псов (Canes Venatici) .. ... NGC 4631 Whale galaxy (Caldwell 32) - спиральная галактика с перемычкой Кит (Arp 281) в созвездии Гончие Псы (Canes Venatici (http://www.starlab.ru/showpost.php?p=178940&postcount=721)) .. ...