... A Massive Star in NGC 6357 . ... For reasons unknown, NGC 6357 is forming some of the most massive stars ever discovered. ... About 300 million light-years away, only four galaxies of the group are actually locked in a cosmic dance of repeated close encounters. ... Sisters of the Dusty Sky . ... Hurtling through a cosmic dust cloud some 400 light-years away, the lovely Pleiades or Seven Sisters star cluster is well-known for its striking blue reflection nebulae. ... Atoms for Peace Galaxy Collision ...

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... 2016 February 5 . Massive Stars in NGC 6357 . ... Explanation: Massive stars lie within NGC 6357 , an expansive emission nebula complex some 6,500 light-years away toward the tail of the constellation Scorpius . In fact, positioned near center in this ground-based close-up of NGC 6357, star cluster Pismis 24 includes some of the most massive stars known in the galaxy, stars with nearly 100 times the mass of the Sun. ... About APOD | ... NASA Official: Phillip Newman Specific rights apply . ...

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• APOD: 2001 February 22 - 3C294: Distant X Ray Galaxy Cluster
• APOD: February 21, 1999 - In the Center of 30 Doradus
• APOD: 2003 February 28 - Fox Fur, the Unicorn, and a Christmas Tree

... STScI-PRC00-25 A DYING STAR IN GLOBULAR CLUSTER M15 The globular cluster Messier 15 is shown in this color image obtained with the NASA Hubble Space Telescope's Wide Field Planetary Camera 2 (WFPC2). ... Known as Kuestner 648, this was the first planetary nebula to be identified in a globular cluster. ... At the present time, the most massive stars remaining in M15 have about 80 percent of the mass of our Sun, a fact that makes the existence of a planetary nebula like K 648 something of a mystery. ...

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• APOD: February 21, 1996 - Millions of Stars in Omega Centauri
• APOD: May 24, 1996 - In the Center of 30 Doradus
• Hubble Provides Multiple Views of How to Feed a Black Hole (PRC98-14)

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• Beloborodov Andrei Mikhailovich, Astro Space Center (ASC)

One of the goals of ALFALFA (the Arecibo Legacy Fast ALFA Survey) is that of verifying whether a significant population of optically faint, baryon rich, low mass systems exists. ... ALFALFA has easily detected the cloud VIRGOHI 21, reported by Davies et al. ... The clouds in the complex appear not to be gravitationally bound to one other, and may represent the remnant of an ancient episode of harassment. ... Davies, J., Minchin, R., Sabatini, S., van Driel, W., Baes, M. et al. ...

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• National Astronomy and Ionosphere Center (Arecibo Observatory)
• Pulsar Highlights - A Dozen new MSPs in Globular Clusters
• Research Areas National Astronomy and Ionosphere Center (Arecibo Observatory)

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• Astronaut Bio: H. Stefanyshyn-Piper (2/2009)

... Our Sun is part of a huge wheel-shaped collection of stars. ... Astronomers have long suspected it was a very massive black hole, and that every galaxy had such a central mass, created early in the history of the universe. ... However, unless that object happens to be headed directly at the black hole (a relatively small target) it will just swing around and fly away again, like a comet making a pass at the Sun. The velocity acquired in falling towards the black hole also helps it escape. ...

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home resources > books . SEARCH ASP SITE: Match ALL words Match ANY word . ... Buy The Black Hole at the Center of our Galaxy at Amazon.com! Reviewed by Terrell Kent Holmes . In 1974 astronomers discovered a bright radio source at the center of the Milky Way Galaxy, in the direction of the constellation Sagittarius. It was an unknown quantity then, but astronomers now know that the object is a supermassive black hole causing a maelstrom of activity at the galactic center. ...

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• ASP: The Music of the New Spheres?
• ASP: Black Holes: An Introductory Resource List
• ASP: More About Deep Space Objects and Cosmic Terms

... A cosmic-ray source uncovered . ... HESS scientists believe the observed cosmic-ray signature could have been produced in a single supernova remnant. ... The HESS data show the cosmic-ray density in the galactic center significantly exceeds that in the solar neighborhood. ... Two possible cosmic-ray accelerators reside in the galactic center. ... More observations are needed to pinpoint which is the cosmic-ray source. ... Only registered members of Astronomy.com are allowed to comment on this...

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• What factors determine if a massive star (say, 100 solar masses) forms instead
• Wide Field Imager snaps cosmic gecko | Astronomy.com
• New cluster is an ancient object | Astronomy.com

ATNF Home . ... About ATNF overview . ... Australia Telescope Steering Committee . ... Australia Telescope User Committee . ... Murchison Radio-astronomy Observatory . ... Parkes radio telescope . Australia Telescope Compact Array . Mopra radio telescope . ... Information & tools for observers . ... Australia Telescope Online Archive (ATOA) . ... ATCA | ... Visiting Parkes radio telescope . ... Parkes radio telescope webcam . ... The Australia Telescope National Facility Colloquium . ...

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• Compact Stellar Systems in the Fornax Cluster: Super-massive Star Clusters or
• ATNF Science Highlights
• Uncovered Structures and the Cluster Abell 3627

... 2011: . Detection of galaxies with large peculiar velocities . ... New galaxies with polar rings . ... The new catalog contains 275 galaxies. ... Radio galaxy RC J0311+0507, a unique object of the early Universe . ... The estimation of the stellar population age in the host galaxy via the multicolor photometry (BTA) and new infrared data (UKIRT, 2011), amounting to 0.8 Gyr results in the moment of its formation when the universe was about 0.5 milliard years old (z~10). ... Archive . ...

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• New LBV Star Discovered in the Galaxy
• New LBV Discovered in DDO 68 Galaxy
• New LBV Stars in the Andromeda Galaxy

I will present theresults from a deep, extended, planetary nebulae survey in a 0.5 sqdeg region centered on the brightest cluster galaxy NGC 4486 (M87) in the Virgo cluster core, carried out with SuprimeCam@Subaru and FLAMES-GIRAFFE@VLT. ... A substructure detected in the projected phase-space of the line-of-sight velocity vs. major axis distance for the M87 halo planetary nebulae provides evidence for the recent accretion event of a satellite galaxy with luminosity twice that of M33. ...

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• http://www.mso.anu.edu.au/~bessell/thumbnails/images.txt
• GSAOI Orion Nebula Cluster Science Page
• Dougal Mackey - Research

... Planets . ... Stars . Exoplanets . ... Most exoplanets so far discovered fall into the category of тАШhot JupitersтАЩ, these are giant planets orbiting very close to their parent star. ... Note that we have discovered so many hot Jupiters because they are the easiest type of planet to find, they are not necessarily particularly common in the galaxy. ... Subsequently several similar hot and€а fuzzy worlds have been discovered the same way, proving this that this planet is not a one-off oddball. ...

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• Omega Centauri: globular cluster of 300,000 stars | Astronotes
• Nebulae | Astronotes
• Astronotes | Armagh Planetarium's astronomy news from across the Universe -

... 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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• ST ScI Preprint #13??
• Stellar Populations and Mass Loss in M15: A Spitzer Space Telescope Detection
• Black Holes in Globular Clusters

... Structure of Data . ... Catalog . ... In SAI OCL Catalog, we introduce our work on investigation of the Milky Way system of open star clusters. The main goal of our study is a search for new clusters using huge surveys. 168 new clusters have been already discovered by us using J,H,Ks data from 2MASS point source catalog. ... For 141 new clusters, we found their physical parameters using J,H,Ks data from 2MASS catalog and, for a number of clusters, our UBVRI CCD observational magnitudes. ...

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... 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. ...

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... НЕПРЕРЫВНОГО МАТЕМАТИЧЕСКОГО ОБРАЗОВАНИЯ . ... Кружок ?Олимпиады и математика? ... Московская математическая олимпиада . Заочный математический конкурс . ... Устные математические олимпиады . Олимпиады по программированию . Математический праздник . Математические регаты . ... Математические бои . Олимпиада по геометрии им. И.Ф.Шарыгина . ... Программа ?Math in Moscow? Научные конкурсы . Творческий конкурс . ... График олимпиад . ... XXVII Математический праздник . ...

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• Moscow Center for Continuous Mathematical Education - Independent University of

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. ...

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• U of O High Energy Physics Seminars
• Astro-2 and the UIT Experiment
• University of Oregon Center for High Energy Physics - Group Talks, Papers, and

... Science User Portal . ... Galaxies . ... ESOтАЩs VISTA survey telescope has spied a horde of previously hidden massive galaxies that existed when the Universe was in its infancy. By discovering and studying more of these galaxies than ever before, astronomers have for the first time found out exactly when such monster galaxies first appeared. A few of the newly discovered massive galaxies are shown in close-up on these small subsets of the UltraVISTA field. ... Early Universe : Galaxy . ...

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• ESO - Thesis Topic: Dynamical models of multiple globular cluster populations
• Detailed view of the Prawn Nebula from ESO's VST | ESO
• Cosmic Spider is Good Mother | ESO

... A faint, dusty rose of the northern sky, emission nebula IC 410 lies about 12,000 light-years away in the constellation Auriga. The cloud of glowing hydrogen gas is over 100 light-years across, sculpted by stellar winds and radiation from embedded open star cluster NGC 1893. ... These "tadpoles" (seen just below center) are regions of denser, cooler gas, and more slowly resist the erosive radiation from the hot stars. ... Copyright (c) Amateur Telescope Makers of Boston, Inc. ...

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