... Credit Copyright: J-P Mets vainio ( Astro Anarchy ) Explanation: NGC 6888, also known as the Crescent Nebula, is a cosmic bubble about 25 light-years across, blown by winds from its central, bright, massive star. ... NGC 6888's central star is classified as a Wolf-Rayet star (WR 136). ... NASA Web Site Statements, Warnings, and Disclaimers . ... Publications with keywords: Crescent Nebula - Wolf-Rayet star - stellar wind . Publications with words: Crescent Nebula - Wolf-Rayet star - stellar wind . ...

... 2003 October 16 . NGC 6888: X-Rays in the Wind . ... X-ray; CXO / NASA , Optical; SDSU / MLO . Explanation: NGC 6888, also known as the Crescent Nebula , is a cosmic bubble of interstellar gas about 25 light-years across. ... Still, NGC 6888 seems to have accomplished this as slow moving winds from the central star's initial transition to a red supergiant were overtaken and rammed by faster winds driven by the intense radiation from the star's exposed inner layers. ... About APOD | ...

EMBARGOED UNTIL: 9:00 A.M. (EDT) June 10, 1999 PHOTO NO.: ... Credit: M. Heydari-Malayeri (Paris Observatory ) and NASA/ESA NOTE TO EDITORS: Image files are available on the Internet at: http :// oposite.stsci.edu / pubinfo /pr/ 1999 /23 or via links in: http :// oposite.stsci.edu / pubinfo /latest.html http :// oposite.stsci.edu / pubinfo /pictures.html Higher resolution digital versions (300 dpi JPEG and TIFF) of the release images are available at: http :// oposite.stsci.edu / ...

... Vink, J.S., de Koter, A. 2005, Astronomy Astrophysics 442, 587 - 596 . ... Vink, J.S., Harries, T.J., Drew, J.E. 2005, Astronomy Astrophysics 430, 213 . ... Vink, J.S., de Koter A. 2002, Astronomy Astrophysics, 393, 543 . ... Vink, J.S., de Koter, A., Lamers, H.J.G.L.M. 2001, Astronomy Astrophysics, 369, 574--588 . ... Vink, J.S., de Koter, A., Lamers, H.J.G.L.M. 2000, Astronomy Astrophysics, 362, 295--309 . ... Vink, J.S., de Koter, A., Lamers, H.J.G.L.M. 1999, Astronomy Astrophysics, 350, 181--196...

... GSAOI Home . ... Science . ... Deep imaging at J , H , and K is required to identify all stellar objects, brown dwarfs, and planetary mass objects in the central region of the Orion Nebula Cluster down to masses comparable to that of Jupiter. This is required to establish the initial mass function, i.e., the number of stars of each mass that have formed, in this region of intense massive star formation. ... The fields of the GSAOI detectors are shown as four green squares in each frame. ...

We report far-infrared and submillimeter observations of supernova 1987A, the star whose explosion was observed on 23 February 1987 in the Large Magellanic Cloud, a galaxy located 160,000 light years away. ... The intensity and spectral energy distribution of the emission suggest a dust mass of about 0.4 to 0.7 times the mass of the Sun. ... Our observations imply that supernovae can produce the large dust masses detected in young galaxies at very high redshifts. ... ADS Citation Query . ...

Supernova 2009js in NGC 918 . This page is devoted to information on Supernova 2009js in NGC 918 . Basic information on this SN, including the last reported brightness, on this Supernova can be found on the main page . Information on the original web pages for many of these images can be found on the updates and links web pages. Discovered independently by Lick Observatory Supernova Search (USA) and Koichi Itagaki (Japan). ... 2009/10/11.44 . 17.2 . ... Joseph Brimacombe . ...

home publications > mercury . SEARCH ASP SITE: Match ALL words Match ANY word . ... ASP Conference Series . Monograph Publications . IAU Publications . ... Publications of the ASP (PASP) . ... Mercury Magazine . ... Order Mercury Issues . Mercury Advertising Rates . ... The Universe in the Classroom . ... Mercury Magazine Contents . ... September/October 2003 . ... Sky Events, Richard Talcott . September Sky Map | October/November Sky Map . ... Society Scope . ...

... MNRAS, 337, 401-408 (2002). ... BHAT, N.D.R., CAMILO, F., CORDES, J.M., NICE, D.J., LORIMER, D.R. & CHATTERJEE, S. "Arecibo observations of Parkes multibeam pulsars". ... ApJ, 579, L25-L28 (2002). ... MNRAS, 338, 425-427 (2003) . ... MNRAS, 335, 1085-1090 (2002). ... GREENHILL, L.J., KONDRATKO, P.T., LOVELL, J.E.J., KUIPER, T.B.H., MORAN, J.M., JAUNCEY, D.L. & BAINES, G.P. "The discovery of H 2 O maser emission in seven active galactic nuclei and at high velocities in the Circinus galaxy". ...

... Armagh Planetarium . ... Universe . ... Posted on February 24, 2012 | 4 Comments Beautiful colour images of nebulae grace astronomy books and websites and have spread to mainstream culture. ... Continue Reading.. ... Hearing news like this certainly makes one sit up and pay attention, but is it is correct? ... This rock is about 9m (30ft) across, meaning that it [ ] . ... Posted on January 30, 2012 | ... Hello, IтАЩm Colin, welcoming you to Astronotes, the PlanetariumтАЩs official blog. ...

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 . ...

... Science . ... Science Users Information > Science and Technical Meetings > Conferences 2010 > Central Massive Objects: The Stellar Nuclei - Black Hole Connection . ... Science Users Information . ... Observing with ESO Telescopes . ... Science Software . ... ESO Science Newsletter . ... An ESO workshop for observers and theorists to discuss recent progress in our understanding of the formation and evolution of black holes and star clusters in the centres of galaxies and their connection to each...

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... The RAS Meteorite Collection: State on the 1 st of June, 1999 . ... About the laboratory . ... Find 1856. One mass of 16.5 kg . ... Chondrite . ... Hammadah al Hamra 163 . ... One mass of 680 g . ... One mass of 936 g . ... Find 1996. 5 masses totaling 1280 g . ... One mass of 333 g . ... One mass of 1267 g . ... One mass of 2540 g . ... One mass of 609 g . ... One mass of 4153 g . ... One mass of 3147 g . ... One mass of about 16.3 kg . ... One mass of 1544 g . ... One mass of 1084 g . ...

... Telescopes . ... The International Conference "Dark Ages and White Nights (Spectroscopy of the CMB)" (June 20-24, 2016) . ... The International Conference "Stars: from collapse to collapse" (October 3-7, 2016) . The traditional annual competition conference of scientific and scientific-engineering papers of the Observatory staff members . ... A session of the Dissertation Council (October 16, 2015) . ... International scientific conference "Large Optical Telescopes" (October, 10-13, 2011) . ...

... Elena Seifina and Lev Titarchuk "On the nature of the compact object in SS433: observational evidence of X-ray photon index saturation" 2010, Astrophysical. ... A.M. Cherepashchuk, R.A. Sunyaev, E.V. Seifina, E.A. Antokhina, D.I. Kosenko, S.V. Molkov, N.I. Shakura, K.A. Postnov, A.N. Timokhin, I.E. Panchenko "INTEGRAL Observations of SS433: Analysis of Precessional and Orbital X-ray Periodicities" 2007, 6th INTEGRAL Workshop, Eds. S. Grebenev, R.A. Sunyaev, p.411 (astro-ph/0610235) . ...

Next: The Evolutionary Status of Up: No Title Previous: Massive X-ray Binaries . After 25 years of pulsar studies, a radiopulsar has been discovered in a binary system with a massive optical companion (Johnston et al. ... As shown in the very first calculations of joint evolution of NS and normal stars in binaries (Kornilov and Lipunov, 1983b[ 86 ]) a considerable fraction (maybe, the majority) of NS in binary systems having an optical companion must be at the ejector љ (E) state. ... Systems . ...

... Measurement of the MASS detectors parameters with mass program January 24, 2015 [112707] . MASS/DIMM electronics. ... Turbina-core(D): Dimm User Guide. ... N.Shatsky, V.Kornilov, The revision of the MASS/DIMM star catalogue. ... О.Возякова, В.Корнилов, Н.Шатский, Новое программное обеспечение прибора MASS/DIMM. ... V.Kornilov, N.Shatsky, S.Potanin, O.Voziakova, B.Safonov Preliminary results of astroclimate parameters measurements at the Sternberg 2.5m telescope installation site. ...

... Sunday , October 6, 2013 Standard quasar-like AGN Standard AGN have: · · · · · Luminous accretion disk (with X-ray corona) Bright line emission (ionised by disk) Dusty obscuring torus (emits in IR/sub-mm) Orientation-dependent observed properties Sometimes, extended radio jets Sunday , October 6, 2013 Another class of AGN Other AGN , exemplified by weak radio ... Sunday, October 6, 2013 Summary · · · · · · Not all AGN follow the "standard" accretion disk picture. ...

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