In this gallery are many images of Low Surface Brightness Galaxies which have recently been discovered and analyzed. ... The central surface brightness of this galaxy is 24.28 . Malin 2 This galaxy is another huge disk galaxy with a scale length of 15 kpc and a redshift of 15000 km/a. The high surface brightness knot in one of its spiral arms actually has the same color, luminosity and H-alpha equivalent width as the entire Large Magellanic Cloud . ... Truly it is a Low Surface Brightness Galaxy. ...

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• The Galaxy Gallery: Messier Objects
• Galaxy Gallery Page III

... December 1, 1998 . Cepheus 1: Nearby Galaxy Hiding . ... Besides being hidden behind the dust and bright foreground stars of our Milky Way Galaxy , recently discovered Cepheus 1 was missed previously because it is so uniformly dim. ... Low-surface brightness (LSB) galaxies like Cepheus 1 are still being studied, but are known to have relatively large separations between bright stars, and to be more commonly found away from other galaxies. ... About APOD > . ...

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• APOD: 2005 December 18 - M83: The Southern Pinwheel Galaxy from VLT
• APOD: December 23, 1998 - Ring Around the Galaxy
• APOD: 2010 December 19 - M82: Galaxy with a Supergalactic Wind

Discover the cosmos! ... December 6, 1999 . M83: The Southern Pinwheel Galaxy from VLT . ... Explanation: M83 is one of the closest and brightest spiral galaxies on the sky. Visible with binoculars in the constellation of Hydra , majestic spiral arms have prompted its nickname as the Southern Pinwheel. Although discovered 250 years ago, only in this century was it appreciated that M83 was not a gas cloud but a barred spiral galaxy much like our own Milky Way Galaxy . ... About APOD > . ...

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• APOD: December 18, 1999 - Irregular Galaxy Sextans A
• APOD: December 13, 1997 - The Coma Cluster of Galaxies
• APOD: 2000 April 4 - A Superwind from the Cigar Galaxy

... 6.12.1999 . ... Credit: FORS Team , 8.2-meter VLT , ESO Explanation: M83 is one of the closest and brightest spiral galaxies on the sky. ... Although discovered 250 years ago, only in this century was it appreciated that M83 was not a gas cloud but a barred spiral galaxy much like our own Milky Way Galaxy . ... Publications with keywords: VLT - spiral galaxy - M83 - central bar . Publications with words: VLT - spiral galaxy - M83 - central bar . ... Spiral Galaxy M83: The Southern Pinwheel . ...

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• Cepheus 1: Nearby Galaxy Hiding
• Galaxy Dwingeloo 1 Emerges

... An artificial comet holds secrets to Earths life . ... Astronomers recently discovered that Scholz's star passed close to the Sun 70,000 years ago. Wouldn't its gravity have sent Oort Cloud comets raining into the inner planets? ... COMETS | OORT CLOUD . Based on the number of long-period comets that enter the inner solar system, astronomers estimate there are probably trillions of them in the Oort Cloud. Get instant access to subscriber content on Astronomy.com! ... Discover | ...

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• Astronomers recently discovered brown dwarfs of only a few hundred degrees
• Astronomy Magazine - Interactive Star Charts, Planets, Meteors, Comets,
• Bright galaxies | Astronomy.com

... By means of deep optical images obtained at the Special Astrophysical Observatory 6-m telescope it was discovered that some Seyfert galaxies that were earlier considered to be non-interacting objects displayed signatures of elongated tidal envelopes belonging to satellite debris. ... Our results suggest that statistic studies based on popular imaging surveys (for example SDSS) can lead to an underestimation of the fraction of minor mergers among galaxies with active nuclei (AGN). ...

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• New LBV Stars in the Andromeda Galaxy
• New LBV Star Discovered in the Galaxy
• NGC 4460

Astronotes Armagh Planetarium's Stellar Blog! ... Colin Johnston . ... Our Galaxy . ... To locate it, look along the imaginary line between the two end stars on the leading edge of the PloughтАЩs blade (Merak and Dubhe) and Polaris (the North Star), the galaxy M82 (also known as the Cigar Galaxy) along with its companion M81, lies just off this line about a third of the way between the Plough and Polaris. €а€аAs usual, the supernova is far brighter than its home galaxy, appearing as an extra star. ...

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• Baby stars of NGC 2841 | Astronotes
• Comet Lovejoy is on the Way | Astronotes
• Kepler 36b and c: Too Close for Comfort | Astronotes

Supernova 2002fk in NGC 1309 . This page is devoted to information on Supernova 2002fk in NGC 1309 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. ... 2002/09/19.848 . ... JM Llapasset image . ... 13.0 . ... Josep M. Bosch . ... Josep M. Bosch image . ... vsnet-campaign-sn 476 ] SN 2002fk in NGC 1309 . ...

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• Supernova 1994I in M51
• Supernova 1994D in NGC 4526
• Supernovae 2014dt in M61

... Bringing news from across the Universe to children all around the world . ... Galaxies are like cities of stars in the Universe. ... Dark galaxies are very far away in the Universe. They are thought to be the building blocks that helped to create the big star-filled galaxies that we see today, like our own Milky Way Galaxy. ... That s why the astronomers looked for dark galaxies around incredibly bright galaxies called quasars , which are also very far away. ...

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• Ultra-compact dwarf galaxies
• ESO - Newsletter December 2015
• The Unexpected Past of a Dwarf Galaxy | ESO

... NGC 6221 . NGC 6215 . NGC 6221 is a barred spiral galaxy which is interacting with its brightest neighbour, NGC 6215, and possibly also with two newly discovered low-surface brightness galaxies (see Figure). The galaxy group lies only 10 degrees below the Galactic plane which explains the rather crowded field in the optical. ... Not much is known about NGC 6215, which is classified as a non-barred spiral galaxy of type SAS5 (RC3). ...

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• NGC 6221
• ATNF Daily Astronomy Picture
• ATNF Media Release - December 1, 1998

. My astronomical research interests center on galaxy structure and evolution. Current topics include: . Polar-ring and interacting galaxies (see also new catalogue ) . Galaxy warps: statistics, properties and origin . Spiral galaxies at z~1: radial and vertical structure of stellar disks, statistics of interactions . Surface photometry and kinematics, dynamical modeling . Observational cosmology . Joomla Counter since Sep 1997

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... The Arecibo Galaxy Environment Survey . ... Gas Content of Galaxies with Extremely High Specific Star-formation Rates . ... SIGGMA: Survey of Ionized Gas in the Galaxy, Made with Arecibo . ... A Continuing Drift-Scan Pulsar Search at 327 MHz (AO327) . ... Followup Timing of 3 Pulsars Discovered in a 327 MHz Drift Survey . ... Arecibo Radar Orbit Refinement of Near-Earth Asteroid 99942 Apophis in June of 2013 . ... Arecibo Radar Observations of 18 Near-Earth Asteroids During July-December 2013 . ...

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• http://www.naic.edu/vscience/schedule/tpfiles/StocketagA2043tp.pdf
• http://www.naic.edu/vscience/schedule/tpfiles/StocketagA2043tp.ps
• http://www.naic.edu/vscience/schedule/tpfiles/StanimirovictagA2453tp.pdf

... January 8, 2007 . ... SENTINEL CORRESPONDENT . Astronomers at UC Santa Cruz have discovered a surprisingly massive halo of bright, old stars around our galactic neighbor Andromeda, pushing the outer limits of the galaxy to 1.5 million light years, and teaching them how spiral galaxies behave. ... Younger stars may be remnants of a galaxy devoured, but older stars could have formed with the birth of the galaxy. ... http://www.santacruzsentinel.com/archive/2007/January/08/local/stories/03local.htm . ...

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• Scientific American: Ask the Experts About Astronomy
• HST this week: 346
• Selected telescopes I have observed with

Dr John Butler making adjustments to the recently restored . Calver 18-inch telescope at the Armagh Observatory. The International Astronomical Union's Minor Planet Center recently named an asteroid after Armagh astronomer, Dr John Butler. ... Christopher John Butler (b. 1940) has worked on cool stars, the effects of solar variability on climate, and preserving Armagh Observatory's scientific heritage for future generations. ... John Butler was born in Cambridgeshire. ...

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• Spread of Life through the Galaxy
• Latest News
• Featured Image | International Year of Astronomy in Ireland | Astronomy 2009

... NOTE TO EDITORS: GALAXY FLY-THROUGH AVAILABLE ONLINE . HUGE GALAXY STRING CHALLENGES SPACE THEORY . An enormous string of galaxies 300 million light-years long has been discovered in the remote Universe, challenging existing theories about how the Universe evolved. ... ANU astronomer Dr Paul Francis, who coordinated the international research team, said the galaxy string lay 10,800 million light-years away. ... The research was funded by NASA and the Australian National University. ...

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• Emma Kirby
• Worked Example 01
• IAU Commission #34 (Interstellar Matter)

... Posts tagged ?host galaxy? ... Without an optical afterglow, a galaxy within the 2 arc second error region of a GRB x-ray afterglow is identified as a host galaxy; however confusion can rise due to the facts that 1. the edge of a galaxy is diffused, 2. multiple sources could exist within 2 arc second error region, 3.the distance between the galaxy and the x-ray afterglow is measured by projection, and 4. lensing causes increase of brightness and position shifts. ... ArXiv] GRB host galaxies, Aug. ...

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• The AstroStat Slog Blog Archive [ArXiv] GRB host galaxies, Aug. 10, 2007
• The AstroStat Slog 2009 December
• The AstroStat Slog Ptolemy

Next: Observations and data reduction Up: HS 0822+3542 - a Previous: HS 0822+3542 - a . ... I Zw 18, a BCG with the lowest known oxygen abundance among the galaxies (O/H 1/50 (O/H) , Searle & Sargent [ 1972 ]; Izotov & Thuan [ 1999 ]), has been suggested as a candidate to be a truly-local young galaxy, experiencing its first short SF episode. ... 1998 ]). ... In this paper we describe the data obtained for the third most metal-deficient galaxy, HS 0822+3542 with O/H = 1/36 (O/H) . ... 0822+3542 1 . ...

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• New nearby very metal-deficient blue compact galaxies
• Conclusions
• Author Query Results

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: Book Review
• ASP: Beacons in the Gloom
• ASP: An Ancient Universe - The Age of Light from the Most Distant Galaxies

... Our Sun is part of a huge wheel-shaped collection of stars. ... Astronomers have long suspected it was a very massive black hole, and that every galaxy had such a central mass, created early in the history of the universe. ... However, unless that object happens to be headed directly at the black hole (a relatively small target) it will just swing around and fly away again, like a comet making a pass at the Sun. The velocity acquired in falling towards the black hole also helps it escape. ...

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Astronomy Articles . Articles | ... Moon | ... Astronomy Binoculars - The Skies The Limit - by Scott Gray, September 2006 . ... Astronomy Terms - To Help You Study The Universe - by Scott Gray, October 2006 . ... Himalia is the only moon other than Europa, Ganymeade, Callisto and IO visible with small telescopes. ... The Harvest Moon refers to the Full Moon that comes closest to the autumnal equinox, or the first day of autumn. ... Think the study of stars is best left to professional astronomers? ...

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• Brightest Northern Hemisphere Galaxy - an Astronomy Net Education Forum Message
• The Astronomy Shop - Posters - by Astronomy Net
• Big Bang: Nagging Doubts Remain - an Astronomy Net Bigbang Forum Message