The radial distribution of metallicity of star-forming galaxies in a galaxy cluster can inform us about the mass assembly and enrichment history of the galaxy cluster. ... Both galaxy clusters are cool-core clusters at redshift z т?? ... The gas-phase metallicity of star- forming galaxies in MACS1115+01 exhibit anti-correlation with projected distance т??0.15 ТБ 0.08 dex/Mpc, whereas the radial metallicity distribution of RXJ1532+30 is statistically flat (т??0.09 ТБ 0.12 dex/Mpc). ...

Еще в разделе: (Показать все результаты (>747) - www.mso.anu.edu.au/ )

• Dougal Mackey - Research

... 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. ...

Еще в разделе: (Показать все результаты (>128) - space.univ.kiev.ua/ )

• Extragalactic Astronomy

.

Еще в разделе: (Показать все результаты (>519) - zebu.uoregon.edu/ )

• Astronomy HyperText Book: Stellar Clusters
• Astronomy Plus CCD Images of Galaxies
• The Galaxy Gallery: Messier Objects

... Here we present our first results of a study of the neutral hydrogen gas (HI) in the southern spiral galaxy NGC 253 with the Australia Telescope Compact Array . ... Several peculiar features have been found. ... Similar features have been found in other starburst galaxies like M82, NGC 1808 and NGC 4945 and are interpreted in terms of bar-induced gas dynamics and star formation. Keywords. galaxies: individual (NGC 253) - galaxies: active - galaxies: ISM - galaxies: kinematics and dynamics. ...

Еще в разделе: (Показать все результаты (>17096) - www.atnf.csiro.au/ )

• HIPASS Bright Galaxy Catalog
• The Circinus Galaxy
• New HI Observations of the Prototype Polar Ring Galaxy NGC 4650A

... This represents the first HI selected sample covering the core and the outskirts of a local cluster of galaxies. ... Optically selected samples miss a considerable number of low luminosity, low surface brightness galaxies underestimating by almost a factor 2 the number of HI rich galaxies present in the cluster volume. ... Right: The g band luminosity function for galaxies in the A1367 volume as obtained from the optically (circles) and HI (histogram) selected sample. ...

Еще в разделе: (Показать все результаты (>3723) - www.naic.edu/ )

• The Evolution of Galaxies Seen Through The Neutral Hydrogen Line The Evolution
• Jodrell Multi-beam Virgo Survey
• HISA Poster for the 197th Meeting of the AAS, January, 2001

... We have made observations of the Perseus cluster with the Westerbork Telescope at 610 MHz. ... Several newly detected sources are identified with cluster galaxies. ... No evidence is found for the existence of the previously reported ~ 65'x25' cluster halo, 3C 84B. Key words: radio galaxies - clusters - tailed radio sources buoyancy The Perseus Cluster of galaxies is one of the most fascinating systems accessible to extragalactic astronomers. ...

Еще в разделе: (Показать все результаты (>2260) - www.sao.ru/ )

• Some statistical trends and distributions
• A VLA Survey of Rich Clusters of Galaxies II
• Cosmology FAQ: Why haven't the CMBR photons outrun the galaxies in the Big...

... Chandra Observation of DEEP2 Galaxy Groups and Clusters . ... Monday: 'Normal' Galaxies, Tuesday: Cluster Formation and Evolution . ... Statistics of galaxy groups in ultradeep XMM surveys. ... What can multiwavelength observations tell about cluster/group formation as well as galaxy evolution? ... I will present results from a Chandra study of eight low-redshift clusters that has systematically measured the AGN fraction in clusters and describe their spatial, kinematic, and host galaxy...

Еще в разделе: (Показать все результаты (>3687) - hea-www.harvard.edu/ )

• The AstroStat Slog Blog Archive [ArXiv] Bimodal Color Distribution in GCS,
• The AstroStat Slog Blog Archive my first AAS. IV. clustering
• The AstroStat Slog mixture

HST resumed operations on the side B electronics on the CU/SDF (Command Unit/Science Data Formatter) on 23 October 2008. WFPC2 calibration measurements and on-sky observations restarted on October 25th, and the ACS/SBC will be brought on line later this week. ... A Snapshot Survey of The Most Massive Clusters of Galaxies . Abstract . ... Binaries in the Kuiper Belt: Probes of Solar System Formation and Evolution . ... Distances to Eclipsing M Dwarf Binaries . ... Past weeks: . ...

Еще в разделе: (Показать все результаты (>18628) - www.stsci.edu/ )

• A Flux Weighted Map of the Galaxy Distribution
• HST this week: 259
• HST this week: 282

Here you can see an image of the central part of the Fornax Cluster taken from the Digital Sky Survey. ... We studied the globular cluster systems (GCSs) of 5 early type galaxies in the Fornax cluster: NGC 1374, NGC1379, NGC 1387, NGC 1427, and the central giant elliptical NGC 1399. ... See our papers ``The central region of the Fornax cluster - I. A catalog and photometric properties of galaxies in selected CCD fields'' and ``The central region of the Fornax cluster - II. ...

Еще в разделе: (Показать все результаты (>66926) - www.eso.org/ )

• Hubble image of galaxy cluster Abell 3827 showing dark matter distribution
• Scaling relations of dwarf galaxies
• ESO - Thesis Topic: Next generation Fornax Cluster surveys

Today's APOD | ... Galaxies rotate and move in clusters as if a tremendous amount of unseen matter is present. ... Specifically, present analyses of above WMAP all-sky image indicate that the universe is 13.7 billion years old (accurate to 1 percent), composed of 73 percent dark energy , 23 percent cold dark matter , and only 4 percent atoms , is currently expanding at the rate of 71 km/sec/ Mpc (accurate to 5 percent), underwent episodes of rapid expansion called inflation , and will expand forever . ...

Еще в разделе: (Показать все результаты (>5471) - www.sai.msu.su/ )

• APOD Index - Galaxies: Clusters of Galaxies
• SNe related preprints
• APOD: 2011 June 29 - Abell 2744: Pandora's Cluster of Galaxies

Blueshifted galaxies in the Virgo cluster I. D. Karachentsev, O. G. Nasonova (Kashibadze), Special Astrophysical Observatory, Russia We consider a sample of 65 galaxies with negative radial velocities with respect to the Lo cal group in the Virgo cluster. ... E, S0 20 ° The radial velo city VLG ­ magnitude mB distribution of sample ob jects. ... The centroid drift for galaxies ranged by VLG from zero to the extremal negative velo city (-866 km/s). ...

Еще в разделе: (Показать все результаты (>1372) - mavr.sao.ru/ )

• important_en
• Measurement of the dark halo shape in polar ring galaxies
• articles_flera_en

... Close," however, is only relative to other clusters of galaxies , since light takes about 50 million years to reach us from A2199. All of the fuzzy objects in the above picture are galaxies , but these galaxies do not contain most of the matter in the cluster. By studying clusters like A2199, astronomers conclude that some form of dark matter dominates the motion of the bright galaxies. ... Publications with keywords: galaxy cluster . Publications with words: galaxy cluster . ...

Еще в разделе: (Показать все результаты (>120190) - www.astronet.ru/ )

• Galaxy Cluster Magnifies Distant Supernova
• Астронет > Galaxy Cluster A2199
• The Hydra Cluster of Galaxies

... Next: Cheating Poisson: A Up: Statistical Analysis Previous: Spatial Models and . ... The spatial distribution of stars in the Local Group dwarf irregular galaxy NGC 6822 has been studied, using recent positions and deep photometry for about 15,000 stars in the galaxy. Based on photometrical data, OB stars and red stars could be studied separately. Spatial statistical tools have been applied to the analysis of the spatial structure. ... Figure: Model selection by the aid of CAIC . ...

Еще в разделе: (Показать все результаты (>1850) - www.adass.org/ )

• Clustering Analysis Algorithms and Their Applications to Digital POSS-II
• Mapping the Jagiellonian Field of Galaxies
• An Extragalactic Point Source Simulator for SIRTF Pipeline Testing

... 05/09/2013 Galaxy Evolution over Five Decades - Cambridge 2013 Nuclear activity and environment Effect of environment on AGN is not completely clear yet. ... 05/09/2013 Galaxy Evolution over Five Decades - Cambridge 2013 Effect of the mass Mass slices ­ optical and radio AGN overall interaction one-on-one interaction relative location 05/09/2013 Galaxy Evolution over Five Decades - Cambridge 2013 Stratified study Stratifed study that considers several strata of mass. ...

Еще в разделе: (Показать все результаты (>2089) - www.mrao.cam.ac.uk/ )

• Galaxy Evolution Over Five Decades
• Astrophysics Group AMI Science
• Scaling relations for molecular gas in the Large Magellanic Cloud

... High redshift radio galaxies . ... Verkhodanov O.V., Kopylov A.I., Zhelenkova O.P., Verkhodanova N.V., Chernenkov V.N., Parijskij Yu.N., Soboleva N.S., Temirova A.V. 2000. ... Verkhodanov O.V., Kopylov A.I., Parijskij Yu.N., Soboleva N.S., Temirova A.V. "Color ages of parent galaxies of high redshift radio sources", in Proc. XV Conf. on "Aktualnye problemy vnegalakticheskoi astronomii" ("Current Problems of Extragalactic Astronomy"), Pushchino, May 25--29, 1998, printed in Pushchino Sci. ...

Еще в разделе: (Показать все результаты (>54) - sed.sao.ru/ )

• astro-ph authors/title/abstract search for 'galaxy merging' all years
• Informational system "Evolution of RG"
• astro-ph authors/title/abstract search for 'galaxy cluster' (skipped 200) all

... Size of the Solar System Compared to our Galaxy . Mentally construct a model of our place in the Milky Way Galaxy and the distribution of stars using your hand and some birdseed. ... Using a strip of paper, construct a quick scale model of the distances between the orbits of the planets, the Asteroid Belt, and Pluto as part of the Kuiper Belt. Sharing the Universe is based upon work supported by the Informal Education Division of the National Science Foundation under Grant no DRL-0638873. ...

Еще в разделе: (Показать все результаты (>1203) - www.astrosociety.org/ )

• ASP: Big Clusters, Tiny Galaxies
• ASP: Black Holes to Blackboards: Drifting Through Andromeda
• ASP: Globular Clusters and Satellite Galaxies: Companions to the Milky Way

. Left panel: The distribution of galaxies 12.7 billion years ago. White circles represent the galaxies, and their size represents the luminosity of the galaxies. The color contour represents the density; the redder the color, the higher the density. The reddest region appears in the lower part of the figure. Right panel: An enlargement from the map that shows the area around the cluster. Credit: NAOJ

Еще в разделе: (Показать все результаты (>6933) - www.astronomy.com/ )

• http://www.astronomy.com/sitefiles/resources/image.aspx?item=%7B574ECA0B-0F5C-40B7-A407-106671FFFA35%7D
• Milky Way moving away from void | Astronomy.com
• The Fireworks Galaxy and open cluster NGC 6939 | Astronomy.com

... Staff . ... Galaxies, AGN, Cosmology . ... A new survey of X-ray clusters of galaxies with the Swift-X-ray Telescope . ... In this framework, an international collaboration between INAF-OAA, INAF-Brera, INAF-OATs, the University for Science and Technology of China-Hefei, the University of Ferrara, and the University of Massachusetts-Amherst, is undertaking a new cluster survey using an X-ray facility that was never exploited before for this goal: the X-ray Telescope (XRT) onboard the Swift satellite...

Еще в разделе: (Показать все результаты (>10252) - www.arcetri.astro.it/ )

• Galaxy archaeology over the last 7 billion years
• A universal physical relation for quasars
• Cannibal Stars Cause Giant Explosions in Fornax Cluster Galaxy (ESO Press

Next: Massive X-ray Binaries Up: No Title Previous: X-ray Galactic Sources and . Table  7 represents the full matrix of stages of binary stars in a model spiral galaxy with the total mass of matter in stars of for (flat spectrum), and Lyne and Lorimer's distribution for kick velocities (equation 7.4.2 )   with km s (which gives the transverse velocity distribution for modeled pulsars best-fitting Lyne and Lorimer (1994)[ 132 ] data; Figure  24 ). ...

Еще в разделе: (Показать все результаты (>632) - xray.sai.msu.ru/ )

• Gravitational waves from supernova explosions
• ADS Abstract Service Results
• Structure of the Galaxy

... 2. (a) Metallicity function and relations between (b) metallicity and radial velocity, (c) metallicity and maximum distance from the Galactic plane,and (d)metallicity and variability period for RR Lyrae variables in the initial sample.The curve in the first graph is the maximum-likelihood approximation of the distribution using a sum of two normal curves with the indicated means,dispersions,and total numbers. ... next figure | privious figure . ...

Еще в разделе: (Показать все результаты (>138) - ip.rsu.ru/ )

• Vladimir Marsakov Publication List
• Population of Galactic globular clusters, figures
• Vladimir Marsakov Abstracts