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Stars/Galaxies
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
Stars/​Galaxies​/Laboratory
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
Stars/​Galaxies​/Evolution
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
Stars/​Galaxies​/Spirals
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
Stars/Violets
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
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
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
Stars/Novas
shows the Andromeda galaxy, a neighbor to our Milky Way galaxy. The main image (top) highlights the contrast between the galaxy's choppy waves of dust
35 KB (4,116 words) - 20:35, 30 November 2020
Radiation astronomy/Spectroscopy
et al. (18 December 2003). Galaxy IRAS F00183-7111. Pasadena, California USA: Caltech. http://www.spitzer.caltech.edu/images/1098-ssc2003-06h-​Galaxy​-IRAS-F00183-7111
38 KB (4,451 words) - 01:30, 1 December 2020
Stars/Galaxies/Milky Way/Quiz
effort, in a lecture/article format, to describe the Milky Way, our home galaxy, often as applied in the performance of radiation astronomy. You are free
5 KB (454 words) - 22:49, 21 January 2019
Radiation/Astronomy (section Galaxy clusters)
et al. (18 December 2003). Galaxy IRAS F00183-7111. Pasadena, California USA: Caltech. http://www.spitzer.caltech.edu/images/1098-ssc2003-06h-​Galaxy​-IRAS-F00183-7111
200 KB (22,943 words) - 04:24, 26 May 2021
Stars/Supernovas
Kupfer; U. Heber; A. Irrgang; B. Wang; Z. Liu et al. (2015-03-06). "The fastest unbound star in our Galaxy ejected by a thermonuclear supernova". Science
82 KB (9,368 words) - 01:37, 1 December 2020
Stars/Reds (section Starburst galaxy)
such stars are present in the old stellar populations of all galaxies (but see Foss et al. 1991), there is good reason to believe that Type Ia supernovae
46 KB (5,409 words) - 20:38, 30 November 2020
Radiation astronomy/Reds (section Starburst galaxy)
Fischer et al. (December 10, 2000). "The very red afterglow of GRB 000418: Further evidence for dust extinction in a gamma-ray burst host galaxy". The Astrophysical
117 KB (13,375 words) - 08:08, 28 June 2021
Intergalactic medium/Laboratory
VV340A is the face-on galaxy, and VV340B is the edge-on galaxy. In both images of UGC 9618, 50 mm corresponds to 2.4' of arc. The galaxy on edge is 16 mm in
15 KB (1,889 words) - 00:49, 19 January 2019
Radiation astronomy/First X-ray source in Andromeda
(UTC) Andromeda Galaxy 10 May 2012 at 15:37 Wikipedia article. Marshallsumter (talk) 00:05, 11 May 2012 (UTC). The Andromeda Galaxy is also known as
26 KB (3,456 words) - 04:32, 18 December 2020
Stars/Star-forming regions (section Starburst galaxy)
Fischer et al. (December 10, 2000). "The very red afterglow of GRB 000418: Further evidence for dust extinction in a gamma-ray burst host galaxy". The Astrophysical
95 KB (12,072 words) - 20:44, 30 November 2020
Sources/Interstellar medium
medium is the matter that exists in the space between the star systems in a galaxy. At right is a visual negative of the LW Cassiopeia Nebula (ISM). Within
100 KB (11,031 words) - 05:09, 6 December 2020
Stars/Sun/Heliospheres
the interstellar medium (the hydrogen and helium gas that permeates the galaxy) by the solar wind. Although electrically neutral atoms from interstellar
11 KB (1,308 words) - 20:48, 30 November 2020
Stars/Infrareds
survey included: Detection of galaxies in the "Zone of Avoidance", a strip of sky obscured in visible light by our own galaxy, the Milky Way. Detection of
17 KB (2,298 words) - 22:20, 21 February 2019
Stars/Quasars
most powerful quasars have luminosities thousands of times greater than a galaxy such as the Milky Way. High-resolution images of quasars, particularly from
47 KB (6,165 words) - 20:35, 30 November 2020
Radiation astronomy/Objects
Teräsranta; A.P. Lobanov; T.P. Krichbaum et al. (May 2000). "II Zw 2, the first superluminal jet in a Seyfert galaxy". Astronomy and Astrophysics 357: L45-8
137 KB (15,697 words) - 04:48, 2 January 2021
Sources/First astronomical X-ray source
Cirasuolo; J.S. Dunlop; J.A. Peacock; D. Farrah et al. (April 2010). "X-ray groups and clusters of galaxies in the Subaru-XMM Deep Field". Monthly Notices
137 KB (16,454 words) - 00:15, 7 December 2020
Object astronomy (section Galaxies)
light-years wide, it is only 8,000 light-years from our Galaxy's disk. It is careening toward our Galaxy at more than 150 miles per second, aimed to strike
100 KB (11,825 words) - 00:02, 7 December 2020
Plasmas/Plasma objects/Coronal clouds(section Galaxy clusters)
of light-years, depending on the size of the associated object such as a galaxy. Once an entity, source, or object [such as a corona or coronal cloud] has
104 KB (11,766 words) - 06:59, 17 June 2021
Radiation astronomy/Clouds
astronomical environments, in particular, the diffuse interstellar medium of the Galaxy. ... silicon nanoparticles provide the best match to the spectrum and the
102 KB (11,547 words) - 02:52, 11 June 2021
Microquasar
jets in the Galaxy” Annual Review of Astronomy and Astrophysics, 37, 409 Mirabel, I.F. & Rodríguez, L.F. (1998) “Microquasars in our Galaxy” Nature, 392
8 KB (1,163 words) - 03:13, 16 October 2020
Radiation astronomy/Continua
Continuum "radiation ... diffuse gamma rays with energies above 10 MeV. In the galaxy these are produced primarily by bremsstrahlung from cosmic ray electrons
24 KB (2,819 words) - 05:30, 2 November 2020
Radiation astronomy/Radios (section Galaxies)
1998; Taylor et al. 1998b), and/or the redshift was large (Fruchter 1999)." The image at right is a "composite image of the Whirlpool Galaxy (also known as
100 KB (12,254 words) - 17:00, 22 November 2020
Radiation astronomy/Sources
within our own galaxy they are usually hidden by interstellar absorption in the galactic disk. They are readily evident in external galaxies, with ~10 found
37 KB (4,172 words) - 21:09, 2 December 2020
Radiation astronomy/Laboratories (section Galaxy verification)
Neal J. Evans II; Remco C. E. van den Bosch et al. (May 2013). "The VIRUS-P Exploration of Nearby Galaxies (VENGA): Survey, Design, Data Processing, and
152 KB (22,238 words) - 01:28, 1 December 2020
Radiation astronomy/Microwaves
the anomalous dust-correlated microwave emission (AME) in the galaxy [was] by Leitch et al (1997) [18] [Characteristics include] the AME constitutes a foreground
99 KB (11,457 words) - 07:55, 9 June 2021
Sources/First astronomical sources
Shintaro Koshida et al. (March 1, 2006). "Reverberation Measurements of the Inner Radius of the Dust Torus in Nearby Seyfert 1 Galaxies". The Astrophysical
85 KB (10,706 words) - 04:11, 5 December 2020
Radiation astronomy/Astrometry (section Galaxies)
al. 2000; de Blok et al. 2001) reveal a steeper rise for some, but not all, of the galaxies studied previously at 21-cm." "Dwarf galaxies, galaxies of
96 KB (11,117 words) - 01:04, 10 June 2021
Radiation astronomy/Cyans
containing materials, including CN detected in comet haloes. "The spiral galaxy, Messier 83, NGC 5236 [is shown in the image at right]. [The t]ri-colour
99 KB (11,947 words) - 18:37, 29 May 2021
Radiation astronomy/​Galaxies​/Quiz
Galaxies is a lecture studying a specific type of radiated astronomical objects. It is also a mini-lecture for a quiz section as part of the radiation
7 KB (369 words) - 14:55, 2 March 2021
Empirical astronomy/Quiz
on the right record emission events for AT2018cow. The first shows the galaxy Z 137-068. The second down on the right has two markers ending close to
6 KB (664 words) - 04:46, 2 January 2021
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