... The Stars of NGC 1705 . ... Some 2,000 light-years across, NGC 1705 is small as galaxies go, similar to our Milky Way's own satellite galaxies, the Magellanic Clouds. ... Springtime on Mars . ... The Gum Nebula Supernova Remnant . ... Spiral Galaxy In Centaurus . ... A Crescent Nebula Star Field . ... Looking like an emerging space cocoon, the Crescent Nebula, visible on the right, was created by the brightest star in its center. ... A Gamma Ray Burst Supernova Connection . ...

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... 2015 December 4 . Cygnus: Bubble and Crescent . ... Explanation: These clouds of gas and dust drift through rich star fields along the plane of our Milky Way Galaxy toward the high flying constellation Cygnus. Caught within the telescopic field of view are the Soap Bubble (lower left) and the Crescent Nebula (upper right). ... Also known as NGC 6888, the Crescent was shaped as its bright, central massive Wolf-Rayet star , WR 136, shed its outer envelope in a strong stellar wind. ...

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• APOD: 2010 December 25 - Decorating the Sky
• APOD: 2005 December 29 - The Iris Nebula from CFHT
• APOD: December 23, 1998 - Ring Around the Galaxy

Laboratory of Stellar Physics . ... A study of close binaries with black holes, neutron stars and white dwarfs. ... A study of SS433 - the massive close binary with a black hole in the regime of supercritical accretion . ... A search for intermediate-mass black holes (IMBH). The black holes which are not supermassive black holes observed in quasars, and which were formed not in massive stars. ... A search for new magnetic stars, new CP stars, measurements of magnetic fields in stars . ...

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• Fabry-Perot Interferometer: Gallery Old

... Takuya Akahori "Faraday Rotation Measure due to the Intergalactic Magnetic Field" . Shae Brown "Cross-correlation of ATLAS and Spitzer-SWIRE Surveys: Probing intergalactic magnetic fields" . Roger Clay "Using low energy cosmic rays to investigate local galactic magnetic fields" . Roland Crocker "A new lower limit on the magnetic field around the Galactic Centre" . ... JinLin Han "Rotation measures of pulsars and radio sources for Galactic magnetic fields" . ...

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• Gas and Magnetic Fields in Galaxies with ASKAP
• ASKAP HI imaging of the galaxy group IC 1459
• Normal galaxies in the XMM-Newton fields: X-rays as a star formation indicator

... These Frontier Fields will combine the power of HST with the natural gravitational telescopes of high-magnification clusters of galaxies. ... We are soliciting gravitational lensing maps for the last four Hubble Frontier Fields clusters (MACSJ0717.5+3745, MACSJ1149.5+2223, AbellS1063, and Abell 370) based upon the exceptionally deep HST FF imaging and other new ancillary data. ... For the full set of proposal instructions and requirements, see the FY16 Frontier Fields Lensing Map Call for Proposals....

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• WFC3 Website
• HST/ACS Ultra-Deep Field
• Dust disk around a black hole in galaxy NGC 7052

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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• Kepler-10c: the First Mega-Earth | Astronotes
• Galaxy NGC 6744: the Milky Way's Cosmic Twin? | Astronotes
• Telescope nights at Armagh Planetarium | Astronotes

... Science . ... Science Users Information > Science Publications > Science Announcements . ... Observing Facilities . ... Observing with ESO Telescopes . ... Public Surveys . ... Data Handling and Products . ... Science Archive Facility . ... Science Announcements . ... Published: 17 Oct 2014 . ... Additional to the previous announcement , data from all three MUSE commissioning runs (February, April тАУ May and 25 July тАУ 03 August 2014) are now available for download together with calibration files....

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• ESO - Newsletter December 2015
• Wide-field view of the field around NGC 7252: the Atoms-for-Peace galaxy
• Wide-field view of the sky around the spiral galaxy NGC 1187

... Press Release Images . Individual Images . ... The right-hand image shows Hubble's close-up view of the galaxy's core, taken in December 1995 by the Wide Field and Planetary Camera 2. The bluish-purple clumps that form the ring are the clusters of infant stars. Two dark, wispy lanes of dust and a pair of blue spiral arms are just outside the star-forming ring. ... The gas is trapped inside the ring through the stars' gravitational attraction. ... Amazing Space | ...

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• APOD: December 6, 1999 - M83: The Southern Pinwheel Galaxy from VLT
• A new survey of X-ray clusters of galaxies with the Swift-X-ray Telescope
• Star formation

. Go Here for Hubble Ultra Deep Field . ___________________________________________________________________ The Electronic Universe Project e-mail: nuts@moo.uoregon.edu

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• The Galaxy Gallery: Messier Objects
• Astro-2 and the UIT Experiment

P. Frisch - Warm partially ionized interstellar gas at the Sun . ... W. M. Goss - Time variations in small-scale galactic HI structure toward 3C138 . S. Stanimirovic - Does tiny-scale atomic structure exist in the ISM? ... T. Bania - The distance to molecular clouds via HI self-absorption . ... C. Heiles - Arecibo Millennium Survey statistics of magnetic field, column density and turbulence in the CNM . R. Crutcher - Magnetic fields in molecular clouds . ...

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• First Galfa H I Map
• I-GALFA Survey Fields
• I-GALFA Reveals Dynamic Events in Our Galaxy

Magnetic Fields around Radio Galaxies Robert Laing (ESO) Laing et al. ... 2008) Negligible depolarization and 2 rotation Almost all Faraday effects must be due to foreground material How to fit depolarization caused by foreground Faraday rotation Complex polarization Rotation measure Integrate over a beam Observed RM for 0 2 rotation and depolarization Faraday rotation and depolarization 5.5 arcsec FWHM Faraday effects at high resolution FWHM = 1.5 ...

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• Retrieval of surface from data across the MUSTANG field
• Retrieval of surface from data across the MUSTANG field (Part 2)
• PPT Slide

... The are two main sources of magnetospheric electric fields. The other is the solar wind related, dawn-to-dusk directed ("convection") field, and the other is the co-rotation electric field related to the rotation of the Earth along its spin axis. The electric fields have a strong effect on the drift paths of the magnetospheric plasma . ... The energetic particles, following the magnetic drifts more readily, are also affected by the convection field. ... Space Physics Text Book of Oulu ...

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• The Acceleration of the Aurora
• Plasma sheet and PSBL [Oulu]
• Magnetic Fields

... Tonight's Sky . ... Observing . ... Sky this Month . ... Star Atlas . ... stars . ... Observing Podcasts . ... Astronomy for Kids . ... Observing springtime deep-sky objects with a large telescope . ... How do neutron stars generate steady magnetic fields? ... How can a neutron star exist if those neutrons are just going to pieces? Get instant access to subscriber content on Astronomy.com! ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ...

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• Magnetic fields, subatomic particles, etc., traveling in different directions
• As stars form, magnetic fields influence regions big and small | Astronomy.com
• Previously understood that magnetic fields were directly related to rotation,

... 2014: . Suppression of cooling by strong magnetic fields in white dwarf stars . ... 69, 439, 2014. Evidence of supercritical accretion in SS433 . ... We discovered a flat portion (white noise) in the power spectrum of SS433 due to an abrupt increase of the disk thickness in the supercritical region. ... Both the hard X-ray radiation and the visual light are seen reflected from the walls of the funnel that forms in the wind of the supercritical disk of SS433. ... Archive . ...

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• Galaxy sector, archive 2012
• Galaxy sector, archive 1995
• Solar activity

Aitoff Projection showing ChaMP Fields . ... Main survey: >20 from galactic plane. ... Galactic Plane Survey: No subarray fields: reduced area and more complicated processing . ... Short exposures included except NGC galaxies . Galactic Plane Survey: > 30 ksecs . ... Galactic Plane Survey: >10% contamination by a diffuse/distributed X-ray or optical source. ... E(B-V)= (B-V) - (B-V) 0 which translates to visual extinction A V via . ... Crudely, E(B-V) can be related to Galactic latitude via . ...

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• Period Determination
• The galaxy M100
• The AstroStat Slog Blog Archive [ArXiv] GRB host galaxies, Aug. 10, 2007

Bigbang Forum Message . Forums: . ... The Sun Energy Source Is Not Nuclear Fusion But Magnetic Fields. ... The sun is not heated by fusion reaction but by magnetic fields coming from the galactic center. The nuclear fusion is a by product of the magnetic fields heating. ... www.astronomy.net . About Astronomy Net | Advertise on Astronomy Net | ... Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

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Galaxy Detection within the RATS project Michael Campbell Zone of Avoidance Our solar system lies about two thirds, or 25,000 light years, away from the galactic centre of the Milky Way. ... The Galaxy Threshold Value After much trial and error it was discovered that the vast majority of object with a star class less than 0.35 were galaxies and the vast majority of objects above 0.35 were stars. I called this the Galaxy Threshold Value. ... Not every object of star class beneath 0.35 is a galaxy. ...

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• FETTU - Page 1
• Featured Image | International Year of Astronomy in Ireland | Astronomy 2009
• Latest News

... Aurora from Space . ... Magnetic Storms . ... 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 ). ... Why no aurora at the magnetic poles? ...

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• (S-7a) The Black Hole at the Center of our Galaxy
• Magnetic Fields
• A Brief History of Magnetospheric Physics Before the Spaceflight Era

... Measurements of magnetic fields on scales larger than galaxy clusters are needed to distinguish between fields generated in the primordial Universe and those generated at later epochs, with implications for particle physics, cosmology, and astrophysics. ... In this talk I will review mechanisms for generating magnetic fields across cosmic time, implications for post-recombination physics, and current observational constraints on intergalactic magnetic fields. ...

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• http://www.mso.anu.edu.au/seminars/abstracts/20150326-1100.html
• http://www.mso.anu.edu.au/~bessell/thumbnails/images.txt
• Dougal Mackey - Research

... 145Slee,Roy Savage We present detailed radio and optical parameters for the stronger radio sources in 58 Abell cluster fields observed with the Very Large Array (VLA) using scaled arrays at 1.5 and 4.9 GHz. ... The cluster fields were distributed over 24 h of RA and between declinations +35 deg and -30 deg. ... Optical identifications Cluster Source Radio Centroid Optical Position EF Ang. ...

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• A VLA Survey of Rich Clusters of Galaxies I.
• HyperLEDA documentation: HyperLEDA: catalogue of designations (a101)
• Catalog of Galaxies behind the Milky Way