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spiral galaxy. Def. a galaxy having a smooth, featureless light-profile is called an elliptical galaxy. Def. a galaxy that like spiral galaxies has a flat
89 KB (10,425 words) - 03:18, 3 March 2021
Radiation astronomy/​Galaxy clusters
"​Galaxies and clusters of galaxies are not uniformly distributed in the Universe, instead they collect into vast clusters and sheets and walls of galaxies
123 KB (11,783 words) - 06:03, 12 June 2021
Radiation astronomy/​Galaxies
astronomy of galaxies generally is about the galaxy as a radiated or radiation emitting astronomical object. The stellar aspects of individual galaxies are in
106 KB (12,619 words) - 06:00, 4 June 2021
Radiation astronomy/High-velocity galaxies
irregular galaxy NGC 1427A is a spectacular example of the resulting stellar rumble. Under the gravitational grasp of a large gang of galaxies, called the
98 KB (9,922 words) - 02:52, 16 December 2020
define a galaxy. While it is part of the astronomy course principles of radiation astronomy, it is also independent. Some suggested galaxy entities to
11 KB (1,264 words) - 22:27, 5 January 2019
towards a coherent theory of galaxy evolution, the American astronomer Edwin Hubble, developed a classification scheme of galaxies in 1926. The image centered
4 KB (397 words) - 04:13, 23 January 2020
Stars/​Galaxies​/Milky Way
name for the galaxy we live in. It is a member of the Local Group of galaxies. Here's a theoretical definition: Def. a large spiral galaxy that includes
39 KB (4,488 words) - 01:36, 1 December 2020
Sources/Intergalactic medium (section Galaxy filaments​)
Drake et al. (1969)." Def. occurring between galaxies is called intergalactic. Def. originating outside the Milky Way galaxy or outside of a galaxy is called
101 KB (12,056 words) - 04:01, 30 November 2020
The spiral galaxy NGC 3319 in the image on the right is about 47 million light-years away. Def. "[a]ny of the collections of many millions of stars ..
38 KB (4,666 words) - 04:18, 18 December 2019
Radiation astronomy/Active galactic nuclei (section Circinus galaxy)
et al. (27 October 2016). "Observing—and Imaging—Active Galactic Nuclei with the Event Horizon Telescope". Galaxies 4 (4): 54. doi:10.3390/​galaxies​4040054
111 KB (13,863 words) - 22:45, 29 November 2020
Radiation astronomy/Hypervelocity stars
the central regions of the Galaxy, and then falls down to ≲ 400 km s−1 at Galactocentric distances ∼ 50 kpc (Williams et al. 2017)." On the right is an
99 KB (11,602 words) - 04:18, 6 December 2020
Radiation astronomy/Lithometeors​(section Whirlpool Galaxy)
the anomalous dust-correlated microwave emission (AME) in the galaxy [was] by Leitch et al (1997) [18] [Characteristics include] the AME constitutes a foreground
107 KB (13,630 words) - 18:39, 31 May 2021
Globulars in M31 (section M31, the Great Andomeda Galaxy)
he was able to conclusively show that M31, was indeed far beyond this galaxy. We now know it to be 2.2 million light-years away. A globular cluster is
3 KB (404 words) - 04:17, 6 January 2020
Radiation astronomy/Submillimeters​(section Whirlpool Galaxy)
(Taylor et al. 1998a, 1998b)." "This image [at right] from the Herschel Observatory reveals some of the coldest and darkest material in our galaxy. The choppy
101 KB (12,512 words) - 04:09, 5 December 2020
Radiation astronomy/Standard candles (section Andromeda galaxy)
spiral galaxy NGC 4414 was imaged by the Hubble Space Telescope as part of the HST Key Project on the Extragalactic Distance Scale. [The galaxy was] observed
110 KB (16,273 words) - 02:51, 30 November 2020
Radiation astronomy/Synchrotrons​(section Galaxies​)
are a number of types of astrophysical objects which emit X-rays, from galaxy clusters, through black holes in active galactic nuclei (AGN) to galactic
106 KB (13,401 words) - 01:41, 4 December 2020
Radiation/Meteors (section High-velocity galaxies​)
is the image on the right. "The invisible cloud is plummeting toward our galaxy at nearly 700,000 miles per hour." "This composite image shows the size
113 KB (13,326 words) - 23:15, 2 March 2021
the bright object seen slightly below and to the right of the galaxy's centre. The galaxy and its bright supernova were observed on the nights of 16, 19
16 KB (1,848 words) - 21:19, 2 December 2020
Radiation astronomy/Superluminals
David L. Meier et al. (February 11, 2009). What is the structure of Relativistic Jets in AGN on Scales of Light Days? In: Galaxies Across Cosmic Time
103 KB (13,570 words) - 05:04, 20 June 2021
Plasmas/Plasma objects
central galaxy, NGC 1275." "And the bay's shape doesn't match those predicted by computer models that simulate normal gas sloshing." "Galaxy cluster mergers
26 KB (3,350 words) - 19:11, 17 April 2021
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