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The Coalsack Nebula and the galactic area surrounding it played a large role in Jerry Pournelle's CoDominium Universe, particularly The Mote in God's Eye and the sequel The Gripping Hand, both co-authored with Larry Niven. In these novels, a human-colonized system, New Caledonia, is on the opposite side of the Coalsack from Earth.
HD 110432 is a Be star in the south-east of Crux, behind the center of the southern hemisphere's dark Coalsack Nebula. It has a stellar classification of B1IVe, which means it is a subgiant star of class B that displays emission lines in its spectrum.
NGC 4609 (also known as Caldwell 98) is an open cluster of stars in the southern constellation of Crux. It was discovered on May 12, 1826 by the Scottish astronomer James Dunlop . [ 4 ] The cluster has an apparent visual magnitude of 6.9 [ 2 ] and spans an angular size of 6.5 ′ . [ 1 ]
The Coalsack Nebula is a dark nebula in the constellation of Crux Australis.Dark nebulae consist of cold dense clouds of gas and dust, which are only seen because they obscure visible light from more distant objects.
Crux is backlit by the multitude of stars of the Scutum-Crux Arm (more commonly called the Scutum-Centaurus Arm) of the Milky Way. This is the main inner arm in the local radial quarter of the galaxy. Part-obscuring this is: The Coalsack Nebula lies partially within Crux and partly in the neighboring constellations of Musca and Centaurus. [3]
West of Epsilon Muscae is NGC 4071, a large, diffuse planetary nebula of magnitude 12.7 with a magnitude 12 central star, [63] thought to lie around 4000 light-years away from Earth. [64] The Coalsack Nebula is a dark nebula located mainly in neighbouring Crux that intrudes into Musca. [65] NGC 4463 is an open cluster located on its ...
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IRAS 12063-6259 is a compact H II region in the constellation of Crux. It lies at a heliocentric distance of roughly 9.5 kpc and a galactocentric distance of 9.3 kpc. [ 1 ] Although previously classified as a planetary nebula as well as an H II region , this source is now solely classified as a normal compact H II region , due to its colour ...