... July 13, 1999 . The Flame Nebula in Infrared . ... Explanation: What lights up the Flame Nebula? Fifteen hundred light years away towards the constellation of Orion lies a nebula which, from its glow and dark dust lanes, appears like a billowing fire. ... Rather the bright star Alnitak , the easternmost star in the Belt of Orion visible to the nebula's right, shines energetic light into the Flame that knocks electrons away from the great clouds of hydrogen gas that reside there. ...

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... The Flame Nebula in Infrared . ... IPAC Explanation: What lights up the Flame Nebula? Fifteen hundred light years away towards the constellation of Orion lies a nebula which, from its glow and dark dust lanes, appears like a billowing fire. ... Rather the bright star Alnitak , the easternmost star in the Belt of Orion visible to the nebula's right, shines energetic light into the Flame that knocks electrons away from the great clouds of hydrogen gas that reside there. ...

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• Астронет > The Flame Nebula in Infrared
• Journal "Peremennye Zvezdy"
• XWare > APOD

... 2010 January 12 . The Flame Nebula in Infrared . ... Explanation: What lights up the Flame Nebula? Fifteen hundred light years away towards the constellation of Orion lies a nebula which, from its glow and dark dust lanes, appears, on the left, like a billowing fire. ... The above false-color picture of the Flame Nebula (NGC 2024) was taken in infrared light , where a young star cluster becomes visible . ... About APOD | ... NASA Official: Phillip Newman Specific rights apply . ...

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• APOD: 2004 September 18 - M55: Globular Star Cluster
• APOD: 2000 September 22 - M55: Globular Star Cluster
• APOD: 2000 July 19 - Globular Cluster M19

... 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. ...

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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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• The Galaxy Gallery: Messier Objects

... Large-scale production and analysis of mock galaxy images. ... Recently I've been involved in a collaboration ( The Illustris Project ) to create and analyze large-scale simulations of galaxy formation. ... Click to see a comparison between the Hubble Ultra Deep Field and a galaxy formation experiment run on a supercomputer: . ... Today, stars and planets form in clouds of gas and dust in galaxies, clumps of matter denser than the universal average by roughly 30 orders of magnitude. ...

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• Fundamental Parameters, Integrated Red Giant Branch Mass Loss, and Dust
• Lists
• STScI Preprint #1250

The Experiment: To find the first galaxies . Understand basic properties of star formation/galaxies ? guess how a young galaxy, or protogalaxy would appear . ... New stars very blue: will appear redder at large distances (redshift). Dust protects gas from radiation. Dust is heated and is luminous at infrared wavelengths. ... Gas in close to a group of galaxies (cluster) may become very hot and emit X-rays. Previous slide . Next slide . Back to first slide . ...

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• Astrophysics Group AMI Science
• Leverhulme Collaboration
• Astrophysics Group AMI Publications

... ATNF Home . ... About ATNF overview . ... Australia Telescope Steering Committee . ... Australian Square Kilometre Array Pathfinder . Murchison Radio-astronomy Observatory . ... Parkes radio telescope . Australia Telescope Compact Array . ... Parkes | ... I work mainly as a radio astronomer, using powerful telescopes such as the Australia Telescope Compact Array, the Very Large Array, the Greenbank Telescope, and the Westerbork Synthesis Radio Telescope array. ... E-Mail: shea.brown@csiro.au . ...

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• Ivy's research
• Australia-Japan Collaborative Workshops
• ESO Collaboration

... Главная . ... Новости . ... Проекты . Любителям астрономии . Проект ISON . ... Подробнее . ... Категория: Новости проекта ISON . ... Метки: Космический мусор ,љ Астероиды ,љ Гамма-всплески ,љ Любителям астрономии ,љ Кометы љ . ... Метки: Космический мусор ,љ Астероиды ,љ Любителям астрономии љ . ... Новости обсерваторий проекта] - Обсерватория Кубанского государственного университета от Иванов А - 09.04.2016 11:08:49 . ... 1999-2013 Copyright "Астрономия и Телескопостроение" . ...

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In autumn 1994, two groups of astronomers announced that they had discovered Cepheid variable stars in a distant cluster of galaxies. ... As the term suggests, variable stars change in brightness over time. ... Variable stars are an ideal way to get high-school students doing real science, with real data, from the real sky. ... a sky chart to find the stars . ... Students can use the nearby stars to estimate the magnitude of Delta. ... Locate the star Delta in Cepheus and estimate its brightness . ...

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• ASP: Indiana Jones and the Astronomers of Yore
• ASP: An Ancient Universe - Changes in Stars

Astronomy Education News . ... T he SELB Schools Cluster Programme is an innovative learning strategy developed by the Armagh Rhymers in collaboration with the Armagh Observatory to teach children science and the arts in a new and fun way. During this programme, children from seven schools in Armagh have learnt astronomy through storytelling and music; and creative writing and music through science and astronomy. ... Schools involved: . ... Armagh Observatory - Astronomy Education . ...

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• SELB Schools Cluster Programme Show | OASES Over us All is the SElfsame Sky |
• SELB Schools Cluster Programme Show | OASES for Peace Over us All is the
• C.J. Butler, Research Astronomer

[ CATS home ] [ Back to CATS list ] [ ftp ] . 1986USydn.T00J....Reynolds

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• Density Determination
• The Spectrophotometrical complex in Nasmyth-1 focus
• A 20 cm VLA survey of Abell clusters of galaxies

... self-absorption - the absorption of light shining on an object by a process similar to that which produced the light originally; if a cloud emits less light than it absorbs from other clouds behind it, this net loss of light, termed self-absorption , causes the foreground cloud to appear darker than the background field (the term is from spectroscopy, where small absorption dips sometimes occur in larger emission lines, making the latter look as if it is absorbing part of itself) . ... HISA Main ...

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• The Pleiades
• ALFALFA Dark Cloud
• Pulsar Highlights - A Dozen new MSPs in Globular Clusters

Astronotes Armagh Planetarium's Stellar Blog! ... Stars . ... Telescopes and Observatories . ... The majestic star-forming region in the Lagoon Nebula. The pale ring to the right is an internal reflection in the telescope.€а (Image credit: ESO/ VPHAS+/ V. Kalari and J. Vink (Armagh Observatory) . ... The 18 component images were further processed twice. ... Venu and his colleagues use images like this to identify individual young forming stars in the Lagoon Nebula and determine their ages. ...

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• M55 globular cluster seen by ESO | Astronotes
• Leonid meteors 2011 | Astronotes
• NGC4666: Secrets of a Starburst Galaxy | Astronotes

... Tonight's Sky . ... SUN MOON MERCURY VENUS MARS, JUPITER SATURN . ... Observing . ... Why do the constellations and the Moon appear upside down from the Southern Hemisphere? ... From the Southern Hemisphere, any object or constellation that lies near the celestial equator (the imaginary line that divides the northern and southern halves of the sky) would appear both upside down and reversed left to right compared to a northern perspective. ... Get instant access to subscriber content on Astronomy...

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• How were the constellation boundaries set? They appear pretty arbitrary. |
• Astronomers discover how lowly dwarf galaxy becomes star-forming powerhouse |
• Can you explain Mercury's retrograde motion? Do other planets appear to do this

... 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 . ...

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• The AstroStat Slog IMF
• The AstroStat Slog Blog Archive [ArXiv] classifying spectra
• PAUL J. GREEN - Contributing ConcepTests

Supernova Cosmology: Legacy and Future, (preprint) . Goobar, A. and Leibundgut, B. Annual Reviews of Nuclear and Particle Science , 2011, 61, 251 . Cosmological Implications from observations of Type Ia Supernovae, . ... Type Ia Supernovae, . ... Leibundgut, B., Suntzeff, N. B. in "Supernovae and Gamma-Ray Bursts", 2003, . ... Cosmology with Supernovae, . ... Leibundgut, B. in Frontiers of Cosmology, 2005, . ... Twenty Years of SN 1987A . ... ApJS, accepted . ... ApJ, 782, 28 . ...

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• ESO - Obscured star cluster population in the Milky Way
• VISTA Reveals the Secret of the Unicorn | ESO
• AdelePlunkettAstro

... In 1930, Trumpler noticed that linear diameters (LD) of open clusters increase with distance (D) from the Sun. ... Since that time, the interstellar absorption has become one of the best studied factor in astrophysics, and we may hope that current OCL distance scales are free from this LD-D correlation. To verify if this is the case we have chosen several modern OCL distance scales and test them with the same clusters and the same angular diameters that Trumpler had used back in 1930. ...

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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 . ...

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

Seven months ago, on Mar 19, 2008, at 09:12 Moscow time, a new star appeared on the sky. The Sun had already risen over the Russia, but people of the Western hemisphere might be able to see by their eyes a faint starlet near one of Bootes constellation stars. This starlet appeared and faded by an order of magnitude in a minute. Astronomers named it GRB080319B or, informally, the Naked-Eye Burst, as it was twice as bright as human eye can see a star. ... Royal Astronomical Society . ...

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• Galaxy sector, archive 2012
• Origin of the internal structures in HL Tauri jet (HH 151)
• Northern Lights and GLORIA