... Credit: Jean-Charles Cuillandre (CFHT), Hawaiian Starlight , CFHT Explanation: NGC 281 is a busy workshop of star formation. Prominent features include a small open cluster of stars, a diffuse red-glowing emission nebula , large lanes of obscuring gas and dust , and dense knots of dust and gas in which stars may still be forming. The open cluster of stars IC 1590 visible around the center has formed only in the last few million years. ... A Dust Cloud in NGC 281 . ... Young Star, Dark Cloud . ...

Еще в разделе: (Показать все результаты (>167375) - www.astronet.ru/ )

• Астронет > NGC 281: Cluster, Clouds, and Globules
• Journal "Peremennye Zvezdy"
• Bright Stars and Dark Clouds

... 2014 October 8 . NGC 6823: Cloud Sculpting Star Cluster . ... Explanation: Star cluster NGC 6823 is slowly turning gas clouds into stars. ... Some outer parts of the cluster, visible in the featured image 's center as the stars and pillars of emission nebula NGC 6820 , contain even younger stars. ... Open star cluster NGC 6823 spans about 50 light years and lies about 6000 light years away toward the constellation of the Fox ( Vulpecula ). APOD Wall Calendar: Nebulas and Star Clusters . ...

Еще в разделе: (Показать все результаты (>8595) - www.sai.msu.su/ )

• APOD: 2004 October 20 - NGC 281: Cluster, Clouds, and Globules
• APOD: 2004 October 4 - NGC 6823: Cloud Sculpting Star Cluster
• APOD: September 25, 1996 - Bright Stars and Dark Clouds

... 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. ...

Еще в разделе: (Показать все результаты (>3122) - star.arm.ac.uk/ )

• Objects in the Sky
• M.D. Smith, Research Astronomer
• C.J. Butler, Research Astronomer

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! ...

Еще в разделе: (Показать все результаты (>2809) - www.armaghplanet.com/ )

• NGC4666: Secrets of a Starburst Galaxy | Astronotes
• Stellar Nursery NGC 6357: Image of the Month | Astronotes
• A Summer Night?s Stargazing | Astronotes

... However, while low mass stars are usually found to form in loose groups with densities of a few stars per cubic parsecs, high mass stars are known to form in dense clusters with up to 10000 stars per cubic parsec. ... We have undertaken a survey of a cospicuous number of fields around intermediate mass young stars (Herbig Ae/Be stars, HAeBe) with the aim of detect and characterize the groups of young stars that may have formed together with the HAeBe star. ... BD +404124 - A rich, compact cluster. ...

Еще в разделе: (Показать все результаты (>8101) - www.arcetri.astro.it/ )

• APOD: April 2, 1999 - Stars of NGC 206
• APOD: December 18, 1999 - Irregular Galaxy Sextans A
• A Bright Ring Of Star Birth Around A Galaxy's Core (PR98-21)

GALAXIES cenA .tiff 40 Bright Radio Galaxy M31.tiff Nikon Andromeda Galaxy (note HII regions in spiral arms) ngc6744.tiff 40 NGC 6744 a face-on spiral clouds_20d.tiff H'blad The Magellanic Clouds our nearest neighbours Lmc_7.tiff Nikon The Large Magellanic Clouds Lmc_zoom.tiff Nikon Detail of previous image smc_7.tiff Nikon The Small Magellanic Clouds smc-zoom.tiff Nikon Detail of previous image 30dor_40_BVR.tiff 40 The 30 Dor ... B [OIII] Halpha trifid.tiff 40" The Trifid Nebula. ...

Еще в разделе: (Показать все результаты (>1366) - www.mso.anu.edu.au/ )

• Research Interests
• Pink Black Holes: Frequently Asked Questions
• THE AUSTRALIAN NATIONAL UNIVERSITY

Photon Scattering: Basic Principle of Photon Scattering . Audio Narration is available . No Scattering: Photon Source and Detector . ... For optical photons, scattering goes as wavelength to the -4 power. In the case of blue photons compared to red photons, this means that blue photons are about 10 times more likely to get scattered than red photons. ... Watch the blue photons scatter away from the detector . ... Interstellar dust make stars appear redder than they really are . ...

Еще в разделе: (Показать все результаты (>367) - zebu.uoregon.edu/ )

• Astro-2 and the UIT Experiment
• Low Surface Brightness Galaxy Gallery
• Astronomy HyperText Book: Stellar Clusters

... Astronomers experienced the same thing, only this time they photographed a dwarf galaxy , and a globular cluster blocked the view. ... A globular cluster is a collection of old stars that orbits a galaxy. ... This particular globular cluster is orbiting the Milky Way our home galaxy. ... Light travels faster than anything in the world, so you could say that this cluster is enormous! ... Astronomers are lucky that the globular cluster insisted on being on camera, as they can now study it in detail. ...

Еще в разделе: (Показать все результаты (>53438) - www.eso.org/ )

• AdelePlunkettAstro
• Infrared/visible crossfade of the Monoceros R2 star-forming region | ESO
• Infrared/visible-light crossfade view of the star cluster NGC 6520 and the dark

... Special Reports Giant space cloud may be powered by black holes 17:57 23 April 2007 NewScientist.com news service David Shiga An enormous cloud of roiling plasma in space may be drawing its energy from black holes, new observations suggest. Such clouds might be sources for the mysterious particles that occasionally crash into Earth's atmosphere at ultra - high speed. ... But higher energy particles in the cloud may be able to escape, he says. ...

Еще в разделе: (Показать все результаты (>3091) - www.naic.edu/ )

• The Pleiades
• What is HISA?
• New Results Confirm Dark Galaxy Existence

Various types of stars have dust around them. In the well known case of the Pleiades the dust around the stars is unrelated to the stars, and is instead dust from an interstellar cloud that the Pleiades cluster has drifted into on its way through the galactic disk. ... The dust in interstellar space is observed in a variety of ways: due to its passive absorption of starlight ("extinction"), by its production of polarization in starlight, and then at long wavelengths due to its thermal radiation. ...

Еще в разделе: (Показать все результаты (>16303) - www.stsci.edu/ )

• Infrared Imaging of the Large Magellanic Cloud Star-forming Region Henize 206
• Local astronomers find gigantic halo around neighboring galaxy - By MEGHA
• Black Holes in Globular Clusters

... 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. ...

Еще в разделе: (Показать все результаты (>429) - www.badastronomy.com/ )

• Phil Plait's Bad Astronomy: Bad TV
• Phil Plait's Bad Astronomy: Info
• Phil Plait's Bad Astronomy: Misconceptions

Halo around the Moon. Halo arises when the light beams refracted on the high clouds icy chips ina form of a six side prism. As a result we see a small halo circle with a 22°-radius. The big circle is formed by the beams paased through the side edge and the base of prismochips. Its radius is equal to 46° (nearly). The big circle is observed rarely and is shining weaker but it is easier to observe it near the Sun, if comparing with the small halo invisible in the bright Sun light. ...

Еще в разделе: (Показать все результаты (>98) - www.space.vsi.ru/ )

• redkoste
• lotsofgalaxiеse

... Its perihelion would occur on April 1, 1997, at which point the comet would be only 0.92 astronomical units from the Sun, just within the orbit of Earth. ... Taken in April 1993, the photo showed the comet over 13 astronomical units from the Sun, well beyond the orbit of Saturn. ... Hale, as in Comet Hale-Bopp, has written a book, Everybody's Comet (available through the ASP Catalog) and coordinated an Internet project, "Hale-Bopp: Live in the American Classroom." ... Anatomy of a comet. ...

Еще в разделе: (Показать все результаты (>1463) - www.astrosociety.org/ )

• ASP: A Good Definition of the Word "Planet": Mission Impossible?
• ASP: Big Clusters, Tiny Galaxies
• ASP: More About Deep Space Objects and Cosmic Terms

... Tonight's Sky . ... The Magazine . ... Observing . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... Astronomy for Kids . ... Observing springtime deep-sky objects with a large telescope . ... Bright planets meet at dusk . ... Astronomy magazine subscribers can read the full article for free. ... Get instant access to subscriber content on Astronomy.com! ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter....

Еще в разделе: (Показать все результаты (>7150) - www.astronomy.com/ )

• Chandra X-ray Observatory delivers new insight into formation of star clusters
• APEX turns its eye to dark clouds in Taurus | Astronomy.com
• Stars emerge from darkness in nearby stellar nursery | Astronomy.com

... 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. ...

Еще в разделе: (Показать все результаты (>1065) - www.cosmos.ru/ )

• Space Research Institute (IKI) Seminar
• Auroral Images
• The Discovery of the Solar System--lesson plan #17

... With the stars gamma Can and delta Can , it forms another asterisms called " the Asses and the Manger ". ... Formed by the stars delta Ori, epsilon Ori and zeta Ori ; in Latin America it is called the " Three Marys ". ... Built by the four stars alpha UMa, beta UMa, gamma UMa and delta UMa . ... Formed by the four stars alpha Del , beta Del , gamma Del and delta Del . ... Also on Orion; the belt stars ( delta Ori , epsilon Ori and zeta Ori ), the sword and eta Ori build up this asterism. ...

Еще в разделе: (Показать все результаты (>363) - www.wro.org/ )

• The M111 - "OnLine"

... Archives . ... my first AAS. ... I was questioned by two attendees, acquainted before the AAS, if I can suggest them clustering methods relevant to their projects. ... classification vs. clustering or supervised learning vs. unsupervised learning : the former terms from the pairs indicate the fact that the scientist already knows types of objects in his hands. ... Tags: Classification , clustering , cosmology , spatial statistics , supervised learning , test , unsupervised learning . ...

Еще в разделе: (Показать все результаты (>4616) - hea-www.harvard.edu/ )

• The AstroStat Slog massive data
• dictionary
• The AstroStat Slog globular cluster

The "ring of fire" seen by satellite cameras around the polar caps (picture below) is probably created by electrons leaking from the tail's plasma sheet, whose magnetic field lines form a somewhat imperfect trap. ... One possible explanation involves the close association between auroral arcs and electric currents which flow along field lines between the ionosphere and distant space ( Birkeland currents ). ... That produces an extra resistance to the flow of current. ...

Еще в разделе: (Показать все результаты (>751) - www.iki.rssi.ru/ )

• Auroral Images
• Comet Introduction
• Kuiper-Oort

ATNF Home . ... About ATNF overview . ... Australia Telescope Steering Committee . ... Astrophysics graduate student programs . ... Murchison Radio-astronomy Observatory . ... Parkes radio telescope . ... Mopra radio telescope . ... The Australia Telescope National Facility Colloquium . ... The mass spectrum scales as N(M) ~ M^-1.5, similar to the mass spectra of young massive star clusters suggesting that individual molecular clouds are transformed in the starburst into individual star clusters. ...

Еще в разделе: (Показать все результаты (>14681) - www.atnf.csiro.au/ )

• Research - Compact high-velocity clouds around the Milky Way
• Australia Telescope National Facility
• Pulsar Group PmWiki/Forms

Structure Formation : Bright side of the Universe Anatoly Klypin New Mexico State University Also: Stefan Gottloeber (Astrophysikalisches Institut Potsdam) Gustavo Yepes (UAM, Madrid) Cosmological ... -body+hydro simulations Codes: SPH + TREE AMR + shock capturing hydro Physical processes: Compton cooling/heating on CMB Radiative gas cooling Star formation with simple approximations Metal enrichment Energy/momentum feedback from young stars and SN Galaxies too concentrated. ...

Еще в разделе: (Показать все результаты (>786) - jet.sao.ru/ )

• http://jet.sao.ru/jet/~goray/othrlink.htm
• http://jet.sao.ru/jet/~bars/othrlink.htm
• Results scientific researchs 6