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A stellar association is a very loose star cluster, looser than an open cluster. A moving group is the remnant of such a stellar association. [ 1 ] Members of stellar associations and moving groups share similar kinematic properties, as well as similar ages and chemical composition.
Auner — (for example: open star cluster Auner 1 at 7:04:16 / -19°45'00" in Canis Major) (Auner 1 is the cluster which was "lost" in the disturbing ghost reflection of nearby Alpha Canis Majoris, aka Sirius, this during the Palomar Observatory Sky Survey, POSS)
A 1.0 m (39 in) Cassegrain reflector built by Rademakers Aandrijvingen B.V. of Amsterdam saw first light in 1961. [11] The primary and secondary mirrors were figured by Don Hendrix of Mount Wilson Observatory. It was automated in the 1990s and is now used by students at UNAM in Mexico City. [12]
The following is a list of NGC objects, that is objects listed in the New General Catalogue (NGC). It is one of the largest comprehensive astronomical catalogues for deep sky objects such as star clusters, nebulae, and galaxies. List of NGC objects (1–1000) List of NGC objects (1001–2000) List of NGC objects (2001–3000)
Composite image showing young stars in and around molecular cloud Cepheus B.. This is a list of star-forming regions located in the Milky Way Galaxy and in the Local Group.Star formation occurs in molecular clouds which become unstable to gravitational collapse, and these complexes may contain clusters of young stars and regions of ionized gas called H II regions.
Tonantzintla, Mexico Observatorio Solar Carl Sagan: 2000 Hermosillo, Sonora, Mexico Observatory House (defunct) 1789 Slough, UK Observatory of the rue Serpente (defunct) 1890–1968 Paris, France Oil Region Astronomical Observatory: Venango County, Pennsylvania, US Onan Observatory: 1990 Norwood Young America, Minnesota, US
Messier 30 (also known as M30, NGC 7099, or the Jellyfish Cluster) is a globular cluster of stars in the southeast of the southern constellation of Capricornus, at about the declination of the Sun when the latter is at December solstice.
This is a list of open clusters located in the Milky Way. An open cluster is an association of up to a few thousand stars that all formed from the same giant molecular cloud . There are over 1,000 known open clusters in the Milky Way galaxy, but the actual total may be up to ten times higher. [ 1 ]