... 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. ...

Еще в разделе: (Показать все результаты (>473) - www.badastronomy.com/ )

... 1) A Multiwavelength Study of Tadpole Galaxies in the Hubble Ultra Deep Field, Straughn, A., et al. (including S. Ravindranath), 2015, ApJ, 814, 97. 2) The Rate of Core Collapse Supernovae to Redshift 2.5 from CANDELS and CLASH Supernova Surveys, Strolger, L., et al. (including S. Ravindranath), 2015, ApJ, 813, 93. ... 18) "Resolved Galaxies in the Hubble Ultra Deep Field: Star Formation in Disks at High Redshift", Elmegreen, D.M., Elmegreen, B.G., Ravindranath, S., Coe, D.A., 2007, ApJ, 658, 763. ...

Еще в разделе: (Показать все результаты (>17922) - www.stsci.edu/ )

• Larry Bradley :: Research
• Swara's Research interests
• Massive Galaxies over Cosmic Time

... Abell 2218: A Galaxy Cluster Lens . ... WFPC2 , HST , NASA Explanation: Gravity can bend light, allowing huge clusters of galaxies to act as telescopes. ... The cluster of galaxies Abell 2218 is itself about three billion light-years away in the northern constellation of the Dragon ( Draco ). ... Publications with keywords: Abell 2218 - cluster of galaxies - gravitational lens . Publications with words: Abell 2218 - cluster of galaxies - gravitational lens . ... The Fornax Cluster of Galaxies . ...

Еще в разделе: (Показать все результаты (>169776) - www.astronet.ru/ )

• XWare > APOD
• Journal "Peremennye Zvezdy"
• Астронет > Illusion and Evolution in Galaxy Cluster Abell 2667

... 2007 March 5 . Illusion and Evolution in Galaxy Cluster Abell 2667 . ... Explanation: What's happening to the galaxies of cluster Abell 2667? ... To start, most of the yellowish objects in the above image from the Hubble Space Telescope are galactic members of a massive cluster of galaxies known as Abell 2667 . ... Light from this galaxy is gravitationally lensed by Abell 2667, appearing much like a distant person would appear through a wine glass. ... About APOD | ...

Еще в разделе: (Показать все результаты (>8571) - www.sai.msu.su/ )

• APOD: 2014 April 22 - The El Gordo Massive Galaxy Cluster
• APOD: 2001 October 24 - The Matter of Galaxy Clusters
• APOD: 2009 September 21 - Abell 370: Galaxy Cluster Gravitational Lens

... STScI-PRC95-02 HUBBLE VIEWS A STARRY RING WORLD BORN IN A HEAD-ON COLLISION [Right] - A rare and spectacular head-on collision between two galaxies appears in this NASA Hubble Space Telescope true-color image of the Cartwheel Galaxy, located 500 million light-years away in the constellation Sculptor. The new details of star birth resolved by Hubble provide an opportunity to study how extremely massive stars are born in large fragmented gas clouds. ...

Еще в разделе: (Показать все результаты (>8206) - www.arcetri.astro.it/ )

• http://www.arcetri.astro.it/~palla/ANDREAIMMAGINI/Cosmologia/97-25a.txt
• http://www.arcetri.astro.it/~palla/ANDREAIMMAGINI/Cosmologia/9827y.txt
• http://www.arcetri.astro.it/igm50/talks_all/grossi.pdf

... Parkes radio telescope . ... Parkes | ... I will present our analysis of the galaxy population of an intermediate X-ray luminosity galaxy cluster from SDSS that has extensive spectroscopic coverage and Galaxy Zoo data available to elucidate the relationships between environment and galaxy stellar mass for an array of observationally important cluster populations that include the Butcher-Oemler blue fraction, the active galactic nucleus (AGN) fraction and a variety of spectroscopic classes of...

Еще в разделе: (Показать все результаты (>14990) - www.atnf.csiro.au/ )

• ATNF Colloquium
• WALLABY - the ASKAP HI All-Sky Survey
• Evolutionary Paths in Galaxy Morphology

Title: A New Model of the Gravitational Lens 0957+561 and a Limit on the Hubble Constant . Authors: Norman A. Grogin , Ramesh Narayan (Harvard Univ.) ... Title: ROSAT/PSPC observation of the distant cluster CL0939+472 . ... Title: Interaction in the Bimodal Galaxy Cluster A3528 . ... Title: Cosmological Implications of Galaxy Cluster Evolution . ... Title: Galaxy Cluster Virial Masses and Omega . ... Matches 201 to 222 from a total of 222 matches for the search pattern galaxy cluster . ...

Еще в разделе: (Показать все результаты (>57) - sed.sao.ru/ )

• astro-ph authors/title/abstract search for 'galaxy merging' all years
• astro-ph authors/title/abstract search for 'galaxy environment' all years

Our publications in 1996 year . Lindner, U.; Einasto, M.; Einasto, J.; Freudling, W.; Fricke, K.; Lipovetsky, V.; Pustilnik, S.; Izotov, Y.; Richter, G. Astronomy and Astrophysics, v.314, p.1-12 (10/1996) . Thuan, Trinh X.; Izotov, Yuri I.; Lipovetsky, Valentin A . ... Edited by Daniel Kunth, B. Guiderdoni, M. Heydari-Malayeri, and Trinh Xu Thuan, 1996., p.607 . ... Edited by Daniel Kunth, B. Guiderdoni, M. Heydari-Malayeri, and Trinh Xu Thuan, 1996., p.587 . ... Thuan, Trinh Xuan; Izotov, Yu. ...

Еще в разделе: (Показать все результаты (>1549) - www.sao.ru/ )

• Old "Structure" publications
• Gravitational Lensing by Clusters of Galaxies
• The very metal-poor local dwarf galaxies

. In the big image at left, the many galaxies of a massive cluster called MACS J1149+2223 dominate the scene. Gravitational lensing by the giant cluster brightened the light from the newfound galaxy, known as MACS 1149-JD, some 15 times. At upper right, a partial zoom-in shows MACS 1149-JD in more detail, and a deeper zoom appears to the lower right. // Image credit: NASA/ESA/STScI/JHU

Еще в разделе: (Показать все результаты (>7207) - www.astronomy.com/ )

• Hubble observes galaxies' evolution in slow motion | Astronomy.com
• Hubble captures first-ever predicted exploding star | Astronomy.com
• What percent of star systems have orbits in the right orientation for

... Science . ... Science Users Information > Science Activities > PhD Thesis Topics offered by ESO Faculty Members > Studying the Cosmological Evolution of Galaxy Clusters with (Sub-)mm Observations . ... Data Handling and Products . ... ESO Data . ... Studies of the Planck data set with optical and sub-mm follow-up observations give new insights about the early assembly of the first clusters, and the later evolution of their gas content as well as of their population of star-forming galaxies. ...

Еще в разделе: (Показать все результаты (>66748) - www.eso.org/ )

• ESO - PhD Thesis Topics offered by ESO Faculty Members
• ESO - Research Area: STELLAR POPULATIONS
• ESO - Dynamics of Low-Mass Stellar Systems: From Star Clusters to Dwarf...

Stellar Clusters are very useful laboratories for empirically studying stellar evolution. ... All cluster stars are at the same distance . All cluster stars have the same physical age . ... CM diagram Young Cluster In this case we see the Main Sequence fully represented. The blue dots represent massive stars with short main sequence lifetimes. ... Thus, identifying the most massive star which is still on the main sequence is an effective means of determining the age of a stellar cluster. ...

Еще в разделе: (Показать все результаты (>424) - zebu.uoregon.edu/ )

• The Galaxy Gallery: Messier Objects
• THE HUBBLE LAW JAVA APPLET
• Astronomy Plus CCD Images of Galaxies

... Astrophysics Grou