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NGC 6738
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NGC 6738 (also KPR2004b 459, Collinder 396 and OCL 101) is a magnitude +8.3 open star cluster located in the constellation Aquila. The cluster was discovered by British astronomer John Herschel using a 47.5 cm (18.7 inch) f/13 speculum reflecting telescope at Slough, England, on the 29th July 182...
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NGC 2359
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NGC 2359, better known as the Thor's Helmet nebula, is actually more like an interstellar bubble, blown as a fast wind from the bright, massive star near the bubble's center sweeps through a surrounding molecular cloud. The central star is an extremely hot giant Wolf-Rayet star, thought to be in a br...
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Altair
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University of Michigan astronomers combined light from four widely separated telescopes to produce the first picture showing surface details on a sun-like star beyond our solar system. The image of the rapidly rotating, hot star Altair is the most detailed stellar picture ever made using an inno...
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Messier 71
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Title: Chandra X-Ray Observatory Observations of the Globular Cluster M71 Authors: R. F. Elsner, C. O. Heinke, H. N. Cohn, P. M. Lugger, J. E. Maxwell, I. H. Stairs, S. M. Ransom, J. W. T. Hessels, W. Becker, R. H. H. Huang, P. D. Edmonds, J. E. Grindlay, S. Bogdanov, K. Ghosh, M. C. Weisskopf We observed...
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NGC 6802
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NGC 6802 (also OCL 114 and Cr 400) is a magnitude +8.8V open cluster located 5800 light-years away in the constellation in Vulpecula. The open cluster was discovered by German-British astronomer William Herschel using a 47.5 cm (18.7 inch) f/13 speculum reflector at Datchet, Berkshire, on the 1...
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NGC 6388
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NGC 6388 (also ESO 279-SC2, GC 4307 and GCl 70) is a magnitude +6.8 globular star cluster located 32,300 light-years away in the constellation Scorpius. The nebula was discovered by Scottish astronomer James Dunlop using a homemade 9-foot 22.86 cm (9 inch) f/12 speculum Newtonian reflector at Par...
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Messier 56
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Messier 56 (also known as M56 or NGC 6779) is a globular cluster in the constellation Lyra. It was discovered by Charles Messier in 1779. M56 is at a distance of about 32,900 light-years from Earth and measures roughly 84 light-years across. [url=http://en.wikipedia.org/wiki/Messier_56]Read m...
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HgMn stars
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Title: Spots on the surface of HgMn stars: Clues to the origin of Hg and Mn peculiarities Authors: S. Hubrig, J.F. Gonzalez, R. Arlt The important result achieved in our recent study of a large sample of HgMn stars using UVES at the VLT and FEROS at the ESO 2.2m telescope is the finding that most HgMn star...
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HD49798 white dwarf companion
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XMM-Newton uncovers a celestial Rosetta stone ESA's XMM-Newton orbiting X-ray telescope has uncovered a celestial Rosetta stone: the first close-up of a white dwarf star, circling a companion star, that could explode into a particular kind of supernova in a few million years. These supernovae a...
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Gum 12
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VLT images cometary globule CG4 Like the gaping mouth of a gigantic celestial creature, the cometary globule CG4 glows menacingly in this new image from ESOs Very Large Telescope. Although it appears to be big and bright in this picture, this is actually a faint nebula, which makes it very hard for am...
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EX Hydrae
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Title: Updated Spin Ephemeris for the Cataclysmic Variable EX Hydrae Authors: C. W. Mauche (LLNL), N. S. Brickhouse (CfA), R. Hoogerwerf (Interactive Supercomputing), G. J. M. Luna (CfA), K. Mukai (GSFC), C. Sterken (Univ. Brussel) Historical optical data are combined with more recent optical...
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GM Aurigae
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New observations made with the Spitzer Space Telescope of a young star show that it is like our own solar system when it was forming.
The star is surrounded by a disk of dust, the sort of "protoplanetary" disk from which planets formed around our Sun, according to theory. In the disk is a gap that ast...
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SU UMa-type dwarf novae
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Title: Photometric Studies of New Southern SU UMa-type dwarf novae, FL Triangulum Australe and CTCV J0549-4921 Authors: Akira Imada, Taichi Kato, L.A.G. Monard, Rod Stubbings, Makoto Uemura, Ryoko Ishioka, Daisaku Nogami We report time-resolved optical CCD photometry on newly discovered SU...
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W75N
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Title: Evolution of the Water Maser Expanding Shell in W75N VLA 2 Authors: Jeong-Sook Kim (1,2), Soon-Wook Kim (2,), Tomoharu Kurayama (3,4), Mareki Honma (5), Tesuo Sasao (6), Gabriele Surcis (7), Jorge Canto (8), Jose M. Torrelles (9), Sang Joon Kim (1) ((1) Kyunghee University, (2) Korea Astro...
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Messier 44
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The Beehive Cluster (also known as Praesepe (Latin for "manger"), M44 or NGC 2632) is a magnitude +3.7 open cluster located ~520-610 light-years away in the constellation Cancer. It looks like a nebulous object to the naked eye under dark skies, and thus has been known since ancient time...
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