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Orion Nebula
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The Great Nebula in Orion is an immense nearby starbirth region. Glowing gas surrounds hot young stars at the edge of an immense interstellar molecular cloud only 1500 light-years away. In the image, faint wisps and sheets of dust and gas are particularly evident. [url=http://antwrp.gsf...
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Orion Nebula Cluster
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11061
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This Chandra x-ray observatory image shows the Orion Nebula Cluster, a rich cluster of young stars lo...
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Horsehead nebula
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5729
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Velocity field and star formation in the Horsehead nebula
Authors: Pierre Hily-Blant (IRAM), David Teyssier (SRON), Sabin Philipp (MPIFR), Rolf Gusten (MPIFR)
Using large scale maps in C18O(2-1) and in the continuum at 1.2mm obtained at the IRAM-30m antenna with the Hete...
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IC2118
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1450
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This reflection nebula is associated with the bright star Rigel in the constellation Orion.
The Witch Head Nebula, also known as IC 2118, glows primarily by light reflected from bright star Rigel, located just off the upper right edge of the full image. Fine dust in the nebula reflects the light. T...
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FU Orionis
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The magnetic fields surrounding a young star have been detected for the first time.
This discovery confirms models of how such stars grow.
Theoretical models predict that the magnetic fields in a dusty disc surrounding a young star will slow the disc's rotation, and allow dust to fall onto the s...
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V1174 Ori
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At this week's American Astronomical Society meeting in Minneapolis, Minnesota, Vanderbilt University astronomer Yilen Gómez Maqueo Chew and five colleagues presented detailed observations of the first known eclipsing binary system containing two brown dwarfs — star like gas balls not quit...
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Barnard's Loop
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Barnard's Loop (Sh 2-276[url=http://www.activeboard.com/forum.spark?forumID=58381&subForumID=150692&action=viewTopic&commentID=5654596]Horsehead[...
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NGC1999
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South of the large star-forming region known as the Orion Nebula, lies bright blue reflection nebula NGC 1999. The nebula is marked with a tiny dark inverted T-shaped dot in the middle of the bluewhite glow.
The dark shape is a dense gas and dust cloud, or Bok globule, seen in silhouette agai...
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Betelgeuse
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Water Vapour on Betelgeuse as Revealed by TEXES High-Resolution 12 Micron Spectra
Authors: N. Ryde, G. M. Harper, M. J. Richter, T. K. Greathouse, J. H. Lacy
The outer atmosphere of the M supergiant Betelgeuse is puzzling. Published observations of different kinds have she...
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Barnard 30
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A new image from NASA's Spitzer Space Telescope shows infant stars "hatching" in the head of Orion, the famous hunter constellation visible from northern hemispheres during winter nights. Astronomers suspect that shockwaves from a 3-million-year-old explosion of a massive star ma...
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Rigel
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That is no Moon!
It is the supergiant star, Rigel, emerging from behind Saturn.
This image was captured by the Cassini spaceprobe in orbit around the planet.
The image was taken in visible green light with the Cassini spacecraft narrow-angle camera at a distance of approximately 663,...
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4U 0614+091
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Cosmology News
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One of the most mysterious aspects of black holes is their ability to shoot small, steady jets of matter into space near the speed of light. Until the sensitive infrared eyes of NASA's Spitzer Space Telescope recently spotted one of these jets around a nearby neutron star, or super-dense dead star, b...
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Orion's belt
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Expand (362kb, 1024 x 768)Exposure: 10 sec Time: 5:20 UT, 10 Sept 2007
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Orion and Mars
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Expand (123kb, 1024 x 768) Orion and Mars 3:00 GMT, 18th October 2007.
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Blobs Orion constellation Highlights
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KMZ
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Google earth file: Orion.kmz (7kb, kmz)
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NGC 1980
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Title: Orion Revisited - I. The massive cluster in front of the Orion Nebula Cluster Authors: J. Alves, H. Bouy The aim of this work is to characterise the stellar population between Earth and the Orion A molecular cloud where the well known star formation benchmark Orion Nebula Cluster (ONC) is embe...
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Orion
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Expand (131kb, 1024 x 768) Expand (96kb, 1024 x 768) The constellation Orion Date: 4:20 GMT, 17th October, 2009.
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V1162 Orion
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Title: V1162 Orion: Updated Amplitude and Period Variation Authors: Pongsak Khokhuntod, Ai-Ying Zhou, Chayan Boonyarak, Shi-Yang Jiang In 2010 November 23-25, we found that the amplitude of V1162 Orion, a delta Scuti star, recovered to about 0.18 mag in V band. An updated (O-C) diagram is provid...
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Orion Molecular Cloud Complex
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Title: Molecular environments of 51 Planck cold clumps in Orion complex Authors: Tie Liu, Yuefang Wu, Huawei Zhang A mapping survey towards 51 Planck cold clumps projected on Orion complex was performed with J=1-0 lines of ^{12}CO and ^{13}CO at the 13.7 m telescope of Purple Mountain Observatory...
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U Orionis
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Maxima of the variable star U Orionis on the 12th January, 2012. Magnitude range: 4.8 - 13.0 Period=368.3days Type: Mira Position (J2000): R.A. 05 55 49.16994 | Dec. +20° 10' 30.6872'' Google earth file: U Orionis.kmz (1kb, kmz)
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CZ Orionis
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The dwarf nova CZ Orionis is in outburst Date of Outburst: 4th October 2008 Magnitude: 11.2 - 15.6 V Outburst Period: 25.73 days Satellite rotation: 0.2189 days Type: Dwarf Nova Position(2000): RA=06 16 43.23, Dec= +15 24 11.7
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V1647 Orionis
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A new star appeared in the constellation of Orion in late 2003 when the young pre-main sequence star V1647 Orionis went into outburst. The eruption and huge increase in brightness of the object resulted in the appearance of a reflection nebula called McNeils Nebula, named after the amateur astrono...
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S Orionis
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Stars/galaxy News
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Two of the World's Largest Interferometric Facilities Team-up to Study a Red Giant Star Using ESO's VLTI on Cerro Paranal and the VLBA facility operated by NRAO, an international team of astronomers has made what is arguably the most detailed study of the environment of a pulsating red giant star. T...
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V1820 Orionis
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Title: V1820 Orionis : an RR Lyrae star with strong and irregular Blazhko effect Authors: Pierre de Ponthiere, Franz-Josef Hambsch, Tom Krajci, Kenneth Menzies, Patrick Wils The Blazhko effect in V1820 Orionis and its period were reported for the first time by Wils et al. (2006) from a data analysi...
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V Orionis
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Maxima of the long period variable V Orionis on the 11th August, 2010. Magnitude: 9.4-14.1 Type: Mira Position(2000): RA 05 06 03.4574, Dec +04 06 08.756
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Sigma Orionis cluster
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Stars/galaxy News
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Title: Stars and brown dwarfs in the sigma Orionis cluster: the Mayrit catalogue Authors: Jose A. Caballero The young sigma Orionis cluster is an indispensable basis for understanding the formation and evolution of stars, brown dwarfs and planetary-mass objects. Our knowledge of its stellar po...
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V1159 Orionis
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The cataclysmic variable V1159 Orionis is in outburst. Date: 16th November 2008 Magnitude: 12.5 - 16.0 Period: ? days Satellite orbital period: 0.062178 days Type: UGSU Position(2000): RA=05h28m59.52s, Dec=-03°33'52.8"
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CN Orionis
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The dwarf nova CN Orionis is in outburst. Date: 25th March, 2011 Magnitude range: 11 - 16.2 V Period: 15.85 days Satellite period: 0.163199 days Type: UGZ Position(2000): RA=05 52 07.79, Dec=-05°25'00.5"
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V2775 Orionis
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Title: Multiwavelength Observations of V2775 Ori, an Outbursting Protostar in L 1641: Exploring the Edge of the FU Orionis Regime Authors: William J. Fischer, S. Thomas Megeath, John J. Tobin, Amelia M. Stutz, Babar Ali, Ian Remming, Marina Kounkel, Thomas Stanke, Mayra Osorio, Thomas Henning,...
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Mu Orionis
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Title: Masses, Luminosities, and Orbital Coplanarities of the mu Orionis Quadruple Star System from PHASES Differential Astrometry Authors: Matthew W. Muterspaugh (Berkeley), Benjamin F. Lane (Draper), Francis C. Fekel (Tennessee State), Maciej Konacki (NCAC Polish Academy of Sciences),...
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GW Orionis
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Stars
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Title: First astronomical unit scale image of the GW Ori triple. Direct detection of a new stellar companion Authors: J.-P. Berger, J. D. Monnier, R. Millan-Gabet, S. Renard, E. Pedretti, W. Traub, C. Bechet, M. Benisty, N. Carleton, P. Haguenauer, P. Kern, P. Labeye, F. Longa, M. Lacasse, F. Malbe...
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Orion 114-426
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Title: ALMA Observations of the Largest Proto-Planetary Disk in the Orion Nebula, 114-426: A CO Silhouette Author: John Bally, Rita K. Mann, Josh Eisner, Sean M. Andrews, James Di Francesco, Meredith Hughes, Doug Johnstone, Brenda Matthews, Luca Ricci, Jonathan P. Williams We present ALMA obse...
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