Английская Википедия:CG 4
Шаблон:Short description Шаблон:Infobox nebula
CG 4, commonly referred to as God's Hand,[1] is a star-forming region located in the Puppis constellation, about Шаблон:Convert from Earth.[2] It is one of several objects referred to as "cometary globules", because its shape is similar to that of a comet.[3] It has a dense head formed of gas and dust,[3] which is around Шаблон:Convert in diameter,[1] and an elongated faint tail[3] around Шаблон:Convert in length.[1]
Шаблон:Nowrap, and the nearby cometary globules, generally point away from the Vela Supernova Remnant, located at the center of the Gum Nebula.[4]
Discovery
In 1976, photographs from the UK Schmidt Telescope—operated by the Australian Astronomical Observatory—showed several objects resembling comets, located in the Gum Nebula,[3] an emission nebula of the constellation. Due to their particular shape, these objects came to be known as cometary globules.[3] Each globule has a dense, dark, ruptured head and a very long tail, with the latter pointing away from the Vela Supernova Remnant. As a part of the ESO Cosmic Gems program, the European Southern Observatory released an image of Шаблон:Nowrap in January 2015 showing the head of the nebula.[3]
Structure
The head of cometary globule Шаблон:Nowrap resembles a comet with a dusty cavernous mouth, as photographed by the European Southern Observatory's Very Large Telescope in 2015.[5] Composed of relatively dense, dark matter, it is an opaque structure that is being illuminated by the glow of a nearby star.[6] An obscure red glow limbing the globule is possibly caused by emission from ionized hydrogen. The mouth of the globule appears to be ready to consume the edge-on spiral galaxy Шаблон:Nowrap. In reality, the galaxy is over a hundred million light-years further away from the globule.[2]
References
