... 2002 November 29 . Open Star Clusters M35 and NGC 2158 . ... NGC 2158 is four times more distant that M35 , over 10 times older, and much more compact as it contains many more stars in roughly the same volume of space. NGC 2158's bright blue stars have self-destructed , leaving cluster light to be dominated by older and yellower star s. Both clusters are visible toward the constellation of Gemini -- M35 with binoculars and NGC 2158 with a small telescope. ... About APOD | ...

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• APOD: 2013 January 3 - Open Star Clusters M35 and NGC 2158
• APOD: 2003 December 15 - Open Star Clusters M35 and NGC 2158
• APOD Index - Stars: Open Clusters

... Credit: Canada-France-Hawaii Telescope , J.-C. Cuillandre ( CFHT ), Coelum Explanation: Open clusters of stars can be near or far, young or old, and diffuse or compact. ... An older and more compact open cluster, NGC 2158 , is visible above on the lower right. ... NGC 2158 's bright blue stars have self-destructed , leaving cluster light to be dominated by older and yellower star s. Both clusters are visible toward the constellation of Gemini -- M35 with binoculars and NGC 2158 with a small...

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• Journal "Peremennye Zvezdy"
• Астронет > Open Star Clusters M35 and NGC 2158
• XWare > APOD

home publications > mercury . ... Big Clusters, Tiny Galaxies . ... Astronomers struggle to understand why giant star clusters form in the tiniest of galaxies . ... These clusters are probably young versions of globular clusters, but they are commonly called super star clusters. Seven dwarf galaxies within 16 million light-years have formed super star clusters, with one of these galaxies, NGC 1569, possessing two young clusters. ... Super star clusters have a lot to tell us about star formation. ...

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• ASP: An Ancient Universe - The Age of Light from the Most Distant Galaxies
• ASP: Accidental Astrophysics: The Devil's In the Magnitudes, Part II
• ASP: Star Science in the Autumn Sky

... Australia Telescope Compact Array . ... Compact Stellar Systems in the Fornax Cluster: Super-massive Star Clusters or Extremely Compact Dwarf Galaxies? ... We suggest that these objects are either super-massive star clusters (intra-cluster globular clusters or tidally stripped nuclei of dwarf galaxies) or a new type of low-luminosity compact elliptical dwarf (``M32-type'') galaxy. ... Keywords: galaxies: star clusters -- galaxies: dwarf -- galaxies: formation . ... Properties of the compact objects ...

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• Summary
• ATNF Science Highlights
• Gravitational microlensing of giant luminous arcs: a test for compact dark

... BLUE STRAGGLER STARS are unusually hot and bright stars found in the cores of ancient star clusters known as globulars. ... BACKGROUND (from wikipedia): Blue straggler stars are stars in open or globular clusters that are hotter and bluer than other cluster stars having the same luminosity. ... There is evidence in favor of this view, notably that blue straggler stars appear to be much more common in dense regions of clusters, especially in the cores of globular clusters. ...

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• Dougal Mackey - CV
• Dougal Mackey - Research
• THE AUSTRALIAN NATIONAL UNIVERSITY

... These Frontier Fields will combine the power of HST with the natural gravitational telescopes of high-magnification clusters of galaxies. ... We are soliciting gravitational lensing maps for the last four Hubble Frontier Fields clusters (MACSJ0717.5+3745, MACSJ1149.5+2223, AbellS1063, and Abell 370) based upon the exceptionally deep HST FF imaging and other new ancillary data. ... For the full set of proposal instructions and requirements, see the FY16 Frontier Fields Lensing Map Call for Proposals....

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• Eclipse Decomposition of Time-Resolved UBVRI and HST Spectra of the Dwarf Nova
• The M87 Globular Cluster System Revisited
• HST Spectral Maps of Accretion Disks in Cataclysmic Binaries

... STScI-PRC99-30 HUBBLE SPIES GIANT STAR CLUSTERS NEAR GALACTIC CENTER Penetrating 25,000 light-years of obscuring dust and myriad stars, NASA’s Hubble Space Telescope has provided the clearest view yet of a pair of the largest young clusters of stars inside our Milky Way galaxy, located less than 100 light-years from the very center of the Galaxy. ... But in the brief time they are around, they shine more brightly than any other star cluster in the Galaxy. ...

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• http://www.arcetri.astro.it/~palla/ANDREAIMMAGINI/Cosmologia/Magnyfing.txt
• http://www.arcetri.astro.it/~palla/ANDREAIMMAGINI/Cosmologia/A2218.txt
• Arcetri Star-Formation Group Publications

Since 1991 I have mainly worked on Nearby Supernovae, carrying out optical spectroscopy and photometry. ... Supernovae . ... A list of all my publications can be found here , while refereed papers can be seen here . ... A review on The Age of Wonder (published on Science, People and Politics) . ... In this way, we know how to react to the inevitable discrepancies that are found when we compare the results of our calculations with measurements of the real things. ... Back To Nando Patat Home Page ...

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• The KMOS team and other well-wishers at the time of first light | ESO
• KMOS on the Very Large Telescope at the time of first light | ESO
• Ultra-compact dwarf galaxies

. Similar to an optical lens bending light to form an image, the galaxy cluster Abell 2218 is so massive and compact that light rays passing through it are deflected by its enormous gravitational field. This process (called gravitational lensing) magnifies, brightens, and distorts images of objects that lie far beyond the cluster. The thin arcs are distorted images of distant galaxies roughly 5-10 times farther than the cluster. A. Fruchter / STScI / NASA

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• Most distant massive galaxy cluster identified | Astronomy.com
• Chandra weighs most massive galaxy cluster in distant universe | Astronomy.com
• Whopping galaxy cluster spotted with help of NASA telescopes | Astronomy.com

A Canadian and American team of Astronomers have used the 305-m wide Arecibo radio dish, the world's largest and most sensitive radio telescope, to uncover a dozen new super-fast-spinning pulsars. The team directed their search for these rare and exotic stars by pointing the Arecibo radio telescope towards massive star clusters, called Globular Clusters, orbiting our Milky Way galaxy. ... One of the most exotic residents in the Globular cluster system are the millisecond pulsars. ...

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• The Pleiades
• first light daytime

... 1st Announcement IAU Symposium 312 Star Clusters and Black Holes Across Cosmic Time, Beijing, China, Aug. 25-29, 2014 . ... SUBJECT: 1st Announcement IAU Symposium 312 Star Clusters and Black Holes Across Cosmic Time, Beijing, China, Aug. 25-29, 2014 . ... which will be held in Beijing, P.R. China, from August 25-29, 2014, hosted by Chinese Academy of Sciences . ... China), . ... 1st Announcement IAU Symposium 312 Star Clusters and Black Holes Across Cosmic Time, Beijing, China, Aug. ...

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• Achievements - Page 4
• MAO NASU :: Topic: Anthropocene Editor's Choice (1/1)

... Time delay determinations in astrophysics are used most often to find time delays between flux density variations in different spectral bands and/or lines in AGNs, and different images of gravitationally lensed QSOs. ... OB used an idea to take into account the known gravitational lensing time delay to get combined radio and optical light curves and then to use them for determination of the possible radio-from-optical time delay. ... Correction for change of time delay and radio flux. ...

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• A Method for Visualizing Time Variability in X-Ray Images
• Real-Time Systems
• A New Stable Method for Long-Time Integration in an N-Body Problem

... Ultraluminous X-ray sources (ULXs) are located in external galaxies, their X-ray luminosities (10 39 - 10 41 erg/s) are thousand times greater than those of brightest black holes in the Galaxy. ULXs may be supercritical accretion disks around black holes of stellar masses (~10 Solar masses) like that in SS433, or they may be a hypothetical intermediate-mass black holes (hundreds - thousands Solar masses) with standard accretion disks. ... 2) The ULX progenitors were ejected from the star clusters. ...

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• Galaxy sector, archive 2014
• Galaxy sector, archive 2012
• Detection of unique bright radio flare of X-ray binary

Russian Version ( KOI-8 , Win ) . Institute of Astronomy of the RAS . ... Self-consistent simulation of chemical and dynamical evolution of protostellar clouds . Chemical evolution of galaxies . ... Soon after my birth I was moved (I was not able to move on my own in those times, you know) in Novouljanovsk, small town to the south of Uljanovsk. ... Since that time my life and work is bound to the Institute of Astronomy of the Russian Academy of Sciences. ... Back to the INASAN home page . ...

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• On current distance scales for open clusters
• Globular Clusters: Self-Enrichment

Astronotes Armagh Planetarium's Stellar Blog! ... Comets and Asteroids . ... Image credit:ESO/J.Emerson/VISTA. ... However others are less pessimistic and it has even been claimed that the mysterious ?Wow! signal? received in 1977 originated from the direction M55.б  Sadly, this still unexplained pulse of radio energy originated from a location rather to the northwest of M55 so I doubt if the source was this cluster (if indeed the signal was genuinely of extraterrestrial origin). ... Mysterious Wow! ...

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• ESO reveals end of cosmic Dark ages | Astronotes
• Most distant galaxy ever seen | Astronotes
• Stargazing in June | Astronotes

... All previous such superstars have been found along with many companion stars in the centres of crowded star clusters. The star is known as VFTS 682 from the VLT-FLAMES Tarantula Survey catalogue of the European Southern Observatory's Very Large Telescope (VLT) located at Paranal in Chile by means of the attached FLAMES instrument. ... Although VFTS 682 seems to be alone now it is not very far away from a very rich star cluster known as RMC 136 that contains several similar superstars. ...

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• Stars Beyond Maturity
• Refereed Journal Publications 1999
• Time zones

Blackholes2 Forum Message . ... Distant Galaxy Red Shift Caused By Time Passage Variation. ... If I were falling toward a neutron star or a black hole, a distant galaxy would seem to be accelerating toward me? ... And apparent receding distant galaxies with a red shift. ... 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" . ...

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• You Can Make Stellar Images Brighter - an Astronomy Net Article
• Time Particles - And The Lack There Of. - an Astronomy Net Blackholes2 Forum
• There Is Not Enough Time To See Inside - an Astronomy Net Blackholes Forum

... Bad Astronomy . ... Bitesize Astronomy . ... The next step up are true clusters, called open clusters . Open clusters (sometimes misleadingly called "galactic clusters") are groups of stars ranging in size from a few dozen stars up to tens of thousands. ... The youngest is about 1 or 2 million years old, while the oldest is about 6 or 7 billion years, making it just older than our own solar system. ... So by looking at the stars in the cluster we can tell pretty well how old they are. ...

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• Phil Plait's Bad Astronomy: Misconceptions
• Phil Plait's Bad Astronomy: Mad Science
• Phil Plait's Bad Astronomy: Bad TV

SLAC Jan 2004 CCD Radiation Damage Studies J. Brau, O. Igonkina , N. Sinev, C. Potter (University of Oregon) January 9, 2004 Outline: · Introduction · Neutron and Electron irradiation · Study of SLD VXD3 · Measurement of the trap filling time · Conclusions O. Igonkina for U.Oregon CCD Radiation Damage Studies 1 SLAC Jan 2004 CCD The ... But is it radiation tolerant? ... The study is to be continued O. Igonkina for U.Oregon CCD Radiation Damage Studies 12 ...

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• http://zebu.uoregon.edu/messier/m31.txt
• Astronomy HyperText Book: Interstellar Medium
• Astronomy HyperText Book

DARK MATTER IN THE UNIVERSE Paul J. Green UNSEEN MASS: Astronomers studying the motions of stars and galaxies throughout the universe have long noticed a strange discrepancy. Stars move around galaxies as if pulled by ten times the matter that we can see. ... GRAVITATIONAL LENSING: Since dark matter by definition cannot be directly observed, several recent searches have instead exploited the predicted gravitational effects of its mass on the observed light from nearby stars. ...

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• An example of a typical timing analysis
• The AstroStat Slog time series
• The AstroStat Slog clusters