[NASA/JPL/Caltech/UCLA] GW Ori is a system of three stars that are gravitationally bound. The bright star on the lower right part of the image is FU Orionis. "In the featured long-exposure image, thousands of stars in our Milky Way Galaxy can be seen in the background behind Betelgeuse, as well as dark dust from the Orion Molecular Cloud, and some red-glowing emission from hydrogen gas on the outskirts of the more distant Lambda Orionis Ring. Lambda Orionis Ring (Angelfish Nebula, Sh2-264) Technical card Basic astrometry details. The ring of molecular clouds surrounding Lambda Orionis can best be explained by a supernova about one million years ago. The Lambda Orionis ring is a large molecular ring, centered around Lambda Orioinis . Steve Coe, observing with a 17.5" f/4.5 at 100X, notes: "pretty Bright, somewhat elongated, brighter in the middle. Lambda Orionis Ring Sh2-264. It has an apparent magnitude of 8.3 and lies at an approximate distance of 1,600 light years from Earth. Betelgeuse, Alpha Orionis (α Ori), is a red supergiant star of the spectral type M1-2 located in the constellation Orion, the Hunter. In Arabic, the star Lambda Orionis is known as "Meissa" or "Al-Maisan," meaning "the shining one." Many low-mass stars parsecsaway were unaffected by this and represent the curren… The H II region is about 150 light years or over 10 degrees across and illuminated by the ultraviolet light from … Barnard 30 is the bright knob of gas and dust in the top center part of the image. In Arabic, the star Lambda Orionis is known as "Meissa" or "Al-Maisan," meaning "the shining one." Lambda Orionis is a hot, massive star that is surrounded by several other hot, massive stars, all of which are creating radiation that excites a ring of dust, creating the "Lambda Orionis molecular ring." Massive OB stars and low-mass stars formed in the central regions of these clouds. A wide angle view pointing deep into the region of the sky near Orion constellation, reveals the faint dark nebulosity which seems to spread between Barnard´s Loop nebula, located on the left edge, Lambda Orionis nebula, as seen in the bottom, and Rosette nebula, shinning in to top right corner. The Meissa Ring is of interest to astronomers because it contains clusters of young stars and proto-stars, or forming stars, embedded within the clouds. Sh2-264 (Lambda Orionis molecular ring) Orion OB1 Stellar Association, which can be further broken down into four parts: Orion OB1a (the group of stars northwest of the Orion Belt stars, including 25 Orionis) Orion OB1b (also known as Collinder 70, discussed below) It has a small nebulous cloud more geared towards the near-infrared than other parts of the neighbouring ionized regions across the Ring. and Bellatrix. Blue and cyan represent 3.4- and 4.6-microns, primarily light emitted by hot stars. It was suggested that this ring formed after a supernova happened inside the central star-forming region that once surrounded the Lambda Orionis Cluster, dispersing the material into the ring seen today. This star can be found at the centre of open cluster Collinder 69 composed of fourth and fifth-magnitude young hot stars, visible to the naked eye. Betelgeuse is well known for being a red supergiant star, yet in WISE's infrared view it appears blue, as do most stars in WISE images. It becomes clear in long-exposure photographs, such as in the first illustration on this page. The cluster might have formed in the central region of an elongated cloud, which is supported by the distribution of pre-main-sequence star candidates, which are concentrated in the cluster and nearby regions in an elongated shape. 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