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Extended Green Objects
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Title: A Water Maser and Ammonia Survey of GLIMPSE Extended Green Objects (EGOs) Authors: C.J. Cyganowski, J. Koda, E. Rosolowsky, S. Towers, J. Donovan Meyer, F. Egusa, R. Momose, T. P. Robitaille We present the results of a Nobeyama 45-m water maser and ammonia survey of all 94 northern GLIMPSE Ex...
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Supernova 2005hk
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Title: The Peculiar Type Ia Supernova 2005hk
Authors: V. Stanishev, S. Taubenberger, G. Blanc, G.C. Anupama, S. Benetti, E. Cappellaro, N. Elias-Rosa, C. Feron, A. Goobar, K. Krisciunas, A. Pastorello, D.K. Sahu, M.E. Salvo, B.P. Schmidt, J. Sollerman, C.C. Thone, M. Turatto...
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HD 5980
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Imagine two stars with winds so powerful that they eject an Earth's worth of material roughly once every month. Next, imagine those two winds colliding head-on. Such titanic collisions produce multimillion-degree gas, which radiates brilliantly in X-rays. Astronomers have conclusively...
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AU Monocerotis
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Title: CoRoT photometry and high-resolution spectroscopy of the interacting eclipsing binary AU Mon Authors: M. Desmet, Y. Fr'emat, F. Baudin, P. Harmanec, P. Lampens, E. Janot Pacheco, M. Briquet, P. Degroote, C. Neiner, P. Mathias, E. Poretti, M. Rainer, K. Uytterhoeven, P. J. Amado, J.-C. Va...
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Circumstellar disks
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Title: Tracing the potential planet-forming regions around seven pre-main-sequence stars Authors: A. A. Schegerer, S. Wolf, C. A. Hummel, S. P. Quanz, A. Richichi We investigate the nature of the innermost regions of seven circumstellar disks around pre-main-sequence stars. Our object sampl...
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WASP-3b
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Title: WASP-3b: a strongly-irradiated transiting gas-giant planet Authors: D. Pollacco, I. Skillen, A. Collier Cameron, B. Loeillet, H.C. Stempels, F. Bouchy, N.P. Gibson, L. Hebb, G. Hebrard, Y.C. Joshi, I. McDonald, B. Smalley, A.M.S. Smith, R.A. Street, S. Udry, R.G. West, D.M. Wilson, P.J...
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Hen 3-1475
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Hubble Sees a Planetary Nebula in the Making Each planetary nebula is complex and unique. Hen 3-1475 is a great example of a planetary nebula in the making, a phase which is known to astronomers as a protoplanetary or preplanetary nebula. Since the central star has not yet blown away its complete shel...
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Galactic collisions
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Data from ISO, the infrared observatory of the European Space Agency (ESA), have provided the first direct evidence that shock waves generated by galaxy collisions excite the gas from which new stars will form. The result also provides important clues on how the birth of the first stars was trigger...
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Lynds 1544
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Large water reservoirs at the dawn of stellar birth ESA's Herschel space observatory has discovered enough water vapour to fill Earth's oceans more than 2000 times over, in a gas and dust cloud that is on the verge of collapsing into a new Sun-like star. Stars form within cold, dark clouds of gas and du...
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XTE J1650-500
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Astronomers have identified the smallest known black hole. The puny object weighs only 3.8 times the Sun's mass and spans just 24 kilometres across. The black hole is believed to have formed from the collapse of a massive star when it ran out of fuel. Astronomers are not sure what the smallest possibl...
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Galactic bar
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Title: Galactic bar: normal mode of the stellar disk or superposition of transient spirals? Authors: Evgeny Polyachenko Several mechanisms of bar formation in stellar galactic disks are considered, including Toomre swing amplification and normal mode approach. On example of the well-known m...
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Mercer 81
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Title: Discovery and spectroscopic study of the massive Galactic cluster Mercer 81 Authors: Diego de la Fuente, Francisco Najarro, Ben Davies, Donald F. Figer During the last decade, hundreds of young massive cluster candidates have been detected in the disk of the Milky Way. We investigate one o...
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Swift J1745-26
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NASA's Swift Satellite Discovers A New Black Hole In Our Galaxy NASA's Swift satellite recently detected a rising tide of high-energy X-rays from a source toward the center of our Milky Way galaxy. The outburst, produced by a rare X-ray nova, announced the presence of a previously unknown stellar-...
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X-ray binaries
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Title: SS433, microquasars, and other transients Authors: Z. Paragi (JIVE), R. C. Vermeulen (Astron), R. E. Spencer (Univ. Manchester) X-ray binaries have been an important key in understanding the jet-disc symbiosis in accreting black holes on all mass scales, from stellar-mass to supermass...
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PSR J0737-3039A
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A rare cosmic phenomenon - a double pulsar - has enabled the Albert Einstein's theory of general relativity to be tested under extreme conditions, the British Association was told by Dr Michael Kramer of the Jodrell Bank Observatory.
The two exotic stars orbit each other at speeds of 621,000 mph,...
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