#arpgalaxy — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #arpgalaxy, aggregated by home.social.
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Image of Arp 289, also known as NGC 3981, from the Atlas of Peculiar Galaxies by Halton Arp (1966).
In the original catalog, it was in the category: Double and multiple galaxies - Wind effects. Its irregular arms are likely due to gravitational interactions with a neighboring galaxy.
NGC 3981 is a member of the NGC 4038 galaxy group, which also contains the Antennae Galaxies, a well-known example of interacting galaxies.
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Image of Arp 289, also known as NGC 3981, from the Atlas of Peculiar Galaxies by Halton Arp (1966).
In the original catalog, it was in the category: Double and multiple galaxies - Wind effects. Its irregular arms are likely due to gravitational interactions with a neighboring galaxy.
NGC 3981 is a member of the NGC 4038 galaxy group, which also contains the Antennae Galaxies, a well-known example of interacting galaxies.
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Image of Arp 82, also known as NGC 2535 and NGC 2536, from the Atlas of Peculiar Galaxies by Halton Arp (1966).
In the original catalog, it was in the category: Spiral galaxies - Large, high surface brightness companions. The larger galaxy's inner arms have evenly spaced "beads on a string" star clusters, suggesting recent gravitational interactions between the galaxy pair led to a burst of star formation.
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Image of Arp 82, also known as NGC 2535 and NGC 2536, from the Atlas of Peculiar Galaxies by Halton Arp (1966).
In the original catalog, it was in the category: Spiral galaxies - Large, high surface brightness companions. The larger galaxy's inner arms have evenly spaced "beads on a string" star clusters, suggesting recent gravitational interactions between the galaxy pair led to a burst of star formation.
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Kitt Peak National Observatory image of Arp 9, also known as NGC 2523.
NGC 2523 is the bright barred spiral galaxy on the left side of this image. The edge-on spiral galaxy to the right is NGC 2523 B. They are both in the same group of galaxies are are about 180 million light years away.
Credit: KPNO, NOIRLab, NSF, AURA, Adam Block
Source: https://noirlab.edu/public/images/noao-n2523block/ -
Kitt Peak National Observatory image of Arp 9, also known as NGC 2523.
NGC 2523 is the bright barred spiral galaxy on the left side of this image. The edge-on spiral galaxy to the right is NGC 2523 B. They are both in the same group of galaxies are are about 180 million light years away.
Credit: KPNO, NOIRLab, NSF, AURA, Adam Block
Source: https://noirlab.edu/public/images/noao-n2523block/ -
Kitt Peak National Observatory image of Arp 9, also known as NGC 2523.
NGC 2523 is the bright barred spiral galaxy on the left side of this image. The edge-on spiral galaxy to the right is NGC 2523 B. They are both in the same group of galaxies are are about 180 million light years away.
Credit: KPNO, NOIRLab, NSF, AURA, Adam Block
Source: https://noirlab.edu/public/images/noao-n2523block/ -
Kitt Peak National Observatory image of Arp 9, also known as NGC 2523.
NGC 2523 is the bright barred spiral galaxy on the left side of this image. The edge-on spiral galaxy to the right is NGC 2523 B. They are both in the same group of galaxies are are about 180 million light years away.
Credit: KPNO, NOIRLab, NSF, AURA, Adam Block
Source: https://noirlab.edu/public/images/noao-n2523block/ -
Kitt Peak National Observatory image of Arp 9, also known as NGC 2523.
NGC 2523 is the bright barred spiral galaxy on the left side of this image. The edge-on spiral galaxy to the right is NGC 2523 B. They are both in the same group of galaxies are are about 180 million light years away.
Credit: KPNO, NOIRLab, NSF, AURA, Adam Block
Source: https://noirlab.edu/public/images/noao-n2523block/ -
Kitt Peak image of Arp 26, also known as M101 or the Pinwheel Galaxy.
This image was taken in 1975 image with the 4-meter Mayall telescope.
Credit: NOIRLab, NSF, AURA
Source: https://noirlab.edu/public/images/noao-02269/ -
Kitt Peak image of Arp 26, also known as M101 or the Pinwheel Galaxy.
This image was taken in 1975 image with the 4-meter Mayall telescope.
Credit: NOIRLab, NSF, AURA
Source: https://noirlab.edu/public/images/noao-02269/ -
Spitzer image of Arp 188, also known as the Tadpole Galaxy.
The Tadpole is a result of a recent galactic interaction. A small intruder galaxy distorted the larger galaxy's shape, creating a 280,000 light-year-long tail of stars and gas.
Credit: NASA/JPL-Caltech/C. Lonsdale (IPAC/Caltech), SWIRE Team
Source: https://www.spitzer.caltech.edu/image/sig05-019b-spitzer-swire-view-of-the-tadpole-galaxy -
Spitzer image of Arp 188, also known as the Tadpole Galaxy.
The Tadpole is a result of a recent galactic interaction. A small intruder galaxy distorted the larger galaxy's shape, creating a 280,000 light-year-long tail of stars and gas.
Credit: NASA/JPL-Caltech/C. Lonsdale (IPAC/Caltech), SWIRE Team
Source: https://www.spitzer.caltech.edu/image/sig05-019b-spitzer-swire-view-of-the-tadpole-galaxy -
Image of Arp 317, also known as the Leo Triplet, from the Atlas of Peculiar Galaxies by Halton Arp (1966).
In the original catalog, it was in the category: Double and multiple galaxies - Groups. This small group of galaxies consists of the edge-on spiral galaxy NGC 3628 at lower right, and the nearly face-on spirals M66 at upper right and M65 at upper left.
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Image of Arp 317, also known as the Leo Triplet, from the Atlas of Peculiar Galaxies by Halton Arp (1966).
In the original catalog, it was in the category: Double and multiple galaxies - Groups. This small group of galaxies consists of the edge-on spiral galaxy NGC 3628 at lower right, and the nearly face-on spirals M66 at upper right and M65 at upper left.
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Image of Arp 23, also known as NGC 4618, from the Atlas of Peculiar Galaxies by Halton Arp (1966).
In the original catalog, it was in the category: Spiral galaxies - One-armed. Its unusual shape may come from gravitational interactions with a neighboring galaxy NGC 4625, seen to the left of center.
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Image of Arp 23, also known as NGC 4618, from the Atlas of Peculiar Galaxies by Halton Arp (1966).
In the original catalog, it was in the category: Spiral galaxies - One-armed. Its unusual shape may come from gravitational interactions with a neighboring galaxy NGC 4625, seen to the left of center.
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Hubble image of Arp 274, also known as NGC 5679.
NGC 5679 is a system of three interacting galaxies, the two large, overlapping spiral galaxies at center, and a smaller companion galaxy to the far left.
The galaxy on the far left and the galaxy on the far right are dotted with blue star clusters, a sign of recent star formation, likely caused by galaxy-galaxy interactions.
Credit: NASA, ESA, STScI, Hubble Heritage Team
Source: https://science.nasa.gov/asset/hubble/galaxy-triplet-arp-274/ -
Hubble image of Arp 274, also known as NGC 5679.
NGC 5679 is a system of three interacting galaxies, the two large, overlapping spiral galaxies at center, and a smaller companion galaxy to the far left.
The galaxy on the far left and the galaxy on the far right are dotted with blue star clusters, a sign of recent star formation, likely caused by galaxy-galaxy interactions.
Credit: NASA, ESA, STScI, Hubble Heritage Team
Source: https://science.nasa.gov/asset/hubble/galaxy-triplet-arp-274/ -
JWST NIRCam and MIRI image of Arp 142, also known as NGC 2936, NGC 2937, and UGC 5130, or the Penguin and the Egg.
The Penguin is a spiral galaxy whose shape has been distorted by the gravity of the elliptical Egg galaxy. The two are about 100,000 light-years apart and completed a close pass between 25 and 75 million years ago.
Credit: NASA, ESA, CSA, STScI
Source: https://webbtelescope.org/contents/media/images/2024/124/01J06XYGEDEE86D1H9N5EJ9EG0 -
JWST NIRCam and MIRI image of Arp 142, also known as NGC 2936, NGC 2937, and UGC 5130, or the Penguin and the Egg.
The Penguin is a spiral galaxy whose shape has been distorted by the gravity of the elliptical Egg galaxy. The two are about 100,000 light-years apart and completed a close pass between 25 and 75 million years ago.
Credit: NASA, ESA, CSA, STScI
Source: https://webbtelescope.org/contents/media/images/2024/124/01J06XYGEDEE86D1H9N5EJ9EG0 -
JWST NIRCam and MIRI image of Arp 142, also known as NGC 2936, NGC 2937, and UGC 5130, or the Penguin and the Egg.
The Penguin is a spiral galaxy whose shape has been distorted by the gravity of the elliptical Egg galaxy. The two are about 100,000 light-years apart and completed a close pass between 25 and 75 million years ago.
Credit: NASA, ESA, CSA, STScI
Source: https://webbtelescope.org/contents/media/images/2024/124/01J06XYGEDEE86D1H9N5EJ9EG0 -
JWST NIRCam and MIRI image of Arp 142, also known as NGC 2936, NGC 2937, and UGC 5130, or the Penguin and the Egg.
The Penguin is a spiral galaxy whose shape has been distorted by the gravity of the elliptical Egg galaxy. The two are about 100,000 light-years apart and completed a close pass between 25 and 75 million years ago.
Credit: NASA, ESA, CSA, STScI
Source: https://webbtelescope.org/contents/media/images/2024/124/01J06XYGEDEE86D1H9N5EJ9EG0 -
JWST NIRCam and MIRI image of Arp 142, also known as NGC 2936, NGC 2937, and UGC 5130, or the Penguin and the Egg.
The Penguin is a spiral galaxy whose shape has been distorted by the gravity of the elliptical Egg galaxy. The two are about 100,000 light-years apart and completed a close pass between 25 and 75 million years ago.
Credit: NASA, ESA, CSA, STScI
Source: https://webbtelescope.org/contents/media/images/2024/124/01J06XYGEDEE86D1H9N5EJ9EG0 -
Sloan Digital Sky Survey image of Arp 291, also known as UGC 5832.
This one-armed barred spiral galaxy may be interacting with the small galaxy above it and to the right.
Credit: SDSS
Source: https://commons.wikimedia.org/wiki/File:UGC5832_-_SDSS_DR14.jpg -
Sloan Digital Sky Survey image of Arp 291, also known as UGC 5832.
This one-armed barred spiral galaxy may be interacting with the small galaxy above it and to the right.
Credit: SDSS
Source: https://commons.wikimedia.org/wiki/File:UGC5832_-_SDSS_DR14.jpg -
Image of Arp 188, also known as Tadpole Galaxy, from the Atlas of Peculiar Galaxies by Halton Arp (1966).
In the original catalog, it was in the category: Amorphous galaxies - Narrow filament. The Tadpole is a result of a recent galactic interaction in the local universe. A small intruder galaxy distorted the larger galaxy's shape, creating a 280,000 light-year-long tail of stars and gas.
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Image of Arp 188, also known as Tadpole Galaxy, from the Atlas of Peculiar Galaxies by Halton Arp (1966).
In the original catalog, it was in the category: Amorphous galaxies - Narrow filament. The Tadpole is a result of a recent galactic interaction in the local universe. A small intruder galaxy distorted the larger galaxy's shape, creating a 280,000 light-year-long tail of stars and gas.
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Hubble Space Telescope image of Arp 15, also known as NGC 7393.
NGC 7393 is a barred spiral galaxy in the constellation Aquarius.
Credit: NASA, ESA, STScI, Julianne Dalcanton, Meli thev, Wikimedia Commons
Source: https://commons.wikimedia.org/wiki/File:Arp_15_HST.jpg -
Hubble Space Telescope image of Arp 15, also known as NGC 7393.
NGC 7393 is a barred spiral galaxy in the constellation Aquarius.
Credit: NASA, ESA, STScI, Julianne Dalcanton, Meli thev, Wikimedia Commons
Source: https://commons.wikimedia.org/wiki/File:Arp_15_HST.jpg -
Image of Arp 194, also known as UGC 6945, from the Atlas of Peculiar Galaxies by Halton Arp (1966).
In the original catalog, it was in the category: Amorphous galaxies - Material ejected from nuclei. This interacting galaxy group includes a pair of merging galaxies with trails of star clusters at top and a single large spiral galaxy at bottom. Together they form a question mark shape.
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Image of Arp 194, also known as UGC 6945, from the Atlas of Peculiar Galaxies by Halton Arp (1966).
In the original catalog, it was in the category: Amorphous galaxies - Material ejected from nuclei. This interacting galaxy group includes a pair of merging galaxies with trails of star clusters at top and a single large spiral galaxy at bottom. Together they form a question mark shape.
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New Technology Telescope image of Arp 271, also known as NGC 5426 and NGC 5427.
The mutual gravitational interaction of this pair of spiral galaxies distorts their shapes and creates a bridge of gas, dust and young stars that connect the galaxies.
Credit: ESO
Source: https://www.eso.org/public/images/potw1035a/ -
New Technology Telescope image of Arp 271, also known as NGC 5426 and NGC 5427.
The mutual gravitational interaction of this pair of spiral galaxies distorts their shapes and creates a bridge of gas, dust and young stars that connect the galaxies.
Credit: ESO
Source: https://www.eso.org/public/images/potw1035a/ -
Hubble image of Arp 140, also known as NGC 274 and NGC 275.
Arp 140 is a pair of interacting galaxies, a barred spiral galaxy and a lenticular galaxy. Lenticular galaxies have large central bulges and flattened disks like spirals, but no spiral arms.
Credit: NASA, ESA, R. Foley, G. Kober
Source: https://science.nasa.gov/missions/hubble/hubble-spies-side-by-side-galaxies/ -
Hubble image of Arp 140, also known as NGC 274 and NGC 275.
Arp 140 is a pair of interacting galaxies, a barred spiral galaxy and a lenticular galaxy. Lenticular galaxies have large central bulges and flattened disks like spirals, but no spiral arms.
Credit: NASA, ESA, R. Foley, G. Kober
Source: https://science.nasa.gov/missions/hubble/hubble-spies-side-by-side-galaxies/ -
Hubble image of Arp 91, also known as NGC 5953 and NGC 5954.
NGC 5953, the large galaxy at center, and NGC 5954 to the left show clear signs of gravitational interaction. A spiral arm or tidal tail from NGC 5954 extends downward and connects to its companion.
Credit: ESA, NASA, J. Dalcanton, J. Schmidt
Source: https://www.flickr.com/photos/geckzilla/49927782867 -
Hubble image of Arp 91, also known as NGC 5953 and NGC 5954.
NGC 5953, the large galaxy at center, and NGC 5954 to the left show clear signs of gravitational interaction. A spiral arm or tidal tail from NGC 5954 extends downward and connects to its companion.
Credit: ESA, NASA, J. Dalcanton, J. Schmidt
Source: https://www.flickr.com/photos/geckzilla/49927782867 -
Image of Arp 195, also known as UGC 4653, from the Atlas of Peculiar Galaxies by Halton Arp (1966).
In the original catalog, it was in the category: Amorphous galaxies - Material ejected from nuclei. This galaxy triplet is undergoing a three-way gravitational tug-of-war.
On the right end is a face-on spiral galaxy. On the left end is a disturbed spiral with a huge tidal tail. The middle galaxy might be an edge-on disk.
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Image of Arp 195, also known as UGC 4653, from the Atlas of Peculiar Galaxies by Halton Arp (1966).
In the original catalog, it was in the category: Amorphous galaxies - Material ejected from nuclei. This galaxy triplet is undergoing a three-way gravitational tug-of-war.
On the right end is a face-on spiral galaxy. On the left end is a disturbed spiral with a huge tidal tail. The middle galaxy might be an edge-on disk.
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VLT image of Arp 16, also known as M66.
M66 is a face-on spiral galaxy with a weak bar feature, seen in yellow, and loosely wound arms that are full of young, blue star clusters.
Credit: ESO, P. Barthel
Source: https://www.eso.org/public/images/eso0338c/ -
VLT image of Arp 16, also known as M66.
M66 is a face-on spiral galaxy with a weak bar feature, seen in yellow, and loosely wound arms that are full of young, blue star clusters.
Credit: ESO, P. Barthel
Source: https://www.eso.org/public/images/eso0338c/ -
JWST and Hubble image of Arp 142, also known as NGC 2936 and NGC 2937, or the Penguin and the Egg.
In Hubble’s visible light view (left), a dark dust lane begins across the Penguin’s beak and extends through its body. In JWST’s near-infrared view (right), the dust is much fainter. A bridge of stars and gas connects the galaxies in the JWST image, and there is a gap with Hubble.
Credit: NASA, ESA, CSA, STScI
Source: https://webbtelescope.org/contents/media/images/2024/124/01J0C9FY0J7F4E6PBXQ50YSHHP -
JWST and Hubble image of Arp 142, also known as NGC 2936 and NGC 2937, or the Penguin and the Egg.
In Hubble’s visible light view (left), a dark dust lane begins across the Penguin’s beak and extends through its body. In JWST’s near-infrared view (right), the dust is much fainter. A bridge of stars and gas connects the galaxies in the JWST image, and there is a gap with Hubble.
Credit: NASA, ESA, CSA, STScI
Source: https://webbtelescope.org/contents/media/images/2024/124/01J0C9FY0J7F4E6PBXQ50YSHHP -
Image of Arp 104, also known as NGC 5216 and NGC 5218, or Keenan’s System, from the Atlas of Peculiar Galaxies by Halton Arp (1966).
In the original catalog, it was in the category: Elliptical galaxies - Connected to spiral galaxies. A bridge of stars and gas about 7,000 light years wide and 150,000 light years long connects the two galaxies.
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Image of Arp 104, also known as NGC 5216 and NGC 5218, or Keenan’s System, from the Atlas of Peculiar Galaxies by Halton Arp (1966).
In the original catalog, it was in the category: Elliptical galaxies - Connected to spiral galaxies. A bridge of stars and gas about 7,000 light years wide and 150,000 light years long connects the two galaxies.
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Hubble image of Arp 224, also known as NGC 3921.
NGC 3921 is a pair of interacting disk galaxies that are in the late stages of a merger. The history of this merger is recorded in the tails and loops that surround the center.
The galaxies were about the same mass and likely collided about 700 million years ago.
Credit: ESA, NASA, J. Schmidt
Source: https://esahubble.org/images/potw1537a/ -
Hubble image of Arp 224, also known as NGC 3921.
NGC 3921 is a pair of interacting disk galaxies that are in the late stages of a merger. The history of this merger is recorded in the tails and loops that surround the center.
The galaxies were about the same mass and likely collided about 700 million years ago.
Credit: ESA, NASA, J. Schmidt
Source: https://esahubble.org/images/potw1537a/ -
Hubble and Pan-STARRS image of Arp 6, also known as NGC 2537 or the Bear’s Paw Galaxy.
NGC 2537's horseshoe structure may be the result of a shockwave from a nuclear starburst.
In this image, the luminosity comes from Hubble ACS/WFC observations, and color comes from PanSTARRS.
Credit: NASA, ESA, STScI, J. Dalcanton, Judy Schmidt, PanSTARRS
Source: https://www.flickr.com/photos/geckzilla/33882055308/in/album-72157706827406804 -
Hubble and Pan-STARRS image of Arp 6, also known as NGC 2537 or the Bear’s Paw Galaxy.
NGC 2537's horseshoe structure may be the result of a shockwave from a nuclear starburst.
In this image, the luminosity comes from Hubble ACS/WFC observations, and color comes from PanSTARRS.
Credit: NASA, ESA, STScI, J. Dalcanton, Judy Schmidt, PanSTARRS
Source: https://www.flickr.com/photos/geckzilla/33882055308/in/album-72157706827406804