#arpgalaxy — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #arpgalaxy, aggregated by home.social.
-
Hubble image of Arp 202, also known as NGC 2719 and NGC 2719A.
This pair of galaxies, an edge-on disk galaxy near the bottom of the frame and a smaller irregularly shaped galaxy above it, had a recent interaction which likely severely perturbed both galaxies. A small tidal tail trails off to the upper left corner of the image.
Credit: NASA, ESA, STScI, Julianne Dalcanton, Meli thev, Wikimedia Commons
Source: https://commons.wikimedia.org/wiki/File:Arp_202_HST.jpg -
Hubble image of Arp 202, also known as NGC 2719 and NGC 2719A.
This pair of galaxies, an edge-on disk galaxy near the bottom of the frame and a smaller irregularly shaped galaxy above it, had a recent interaction which likely severely perturbed both galaxies. A small tidal tail trails off to the upper left corner of the image.
Credit: NASA, ESA, STScI, Julianne Dalcanton, Meli thev, Wikimedia Commons
Source: https://commons.wikimedia.org/wiki/File:Arp_202_HST.jpg -
Hubble image of Arp 282, also known as NGC 169 and NGC 169A.
Both NGC 169 (bottom) and NGC 169A (top) have actively accreting supermassive black holes in their centers. The two galaxies are interacting, creating delicate streams of stars, gas and dust that visibly link the pair.
Credit: ESA/Hubble & NASA, J. Dalcanton, Dark Energy Survey, DOE, FNAL/DECam, CTIO/NOIRLab/NSF/AURA, SDSS, J. Schmidt
Source: https://esahubble.org/images/potw2206a/ -
Hubble image of Arp 282, also known as NGC 169 and NGC 169A.
Both NGC 169 (bottom) and NGC 169A (top) have actively accreting supermassive black holes in their centers. The two galaxies are interacting, creating delicate streams of stars, gas and dust that visibly link the pair.
Credit: ESA/Hubble & NASA, J. Dalcanton, Dark Energy Survey, DOE, FNAL/DECam, CTIO/NOIRLab/NSF/AURA, SDSS, J. Schmidt
Source: https://esahubble.org/images/potw2206a/ -
Hubble image of Arp 238, also known as UGC 8335.
Gravitational interactions between these two spiral galaxies created a bridge of material and two curved tails of gas and stars. These tails are full of clusters of young, hot, blue, stars, a sign of recent star formation. Both galaxies show dust lanes in their centers.
Credit: NASA, ESA, STScI
Source: https://science.nasa.gov/asset/hubble/hubble-interacting-galaxy-ugc-8335/ -
Hubble image of Arp 238, also known as UGC 8335.
Gravitational interactions between these two spiral galaxies created a bridge of material and two curved tails of gas and stars. These tails are full of clusters of young, hot, blue, stars, a sign of recent star formation. Both galaxies show dust lanes in their centers.
Credit: NASA, ESA, STScI
Source: https://science.nasa.gov/asset/hubble/hubble-interacting-galaxy-ugc-8335/ -
Kitt Peak image of Arp 84, also known as NGC 5394 and NGC 5395.
The center of the smaller distorted spiral NGC 5394 is undergoing a burst of star formation. Interactions between this galaxy pair funneled gas into the center of NGC 5394, providing the raw materials for new stars.
Credit: KPNO, NOIRLab, NSF, AURA, D. Matthews, E. J. Jones, A. Block
Source: https://noirlab.edu/public/images/noao-n5394matthews/ -
Kitt Peak image of Arp 84, also known as NGC 5394 and NGC 5395.
The center of the smaller distorted spiral NGC 5394 is undergoing a burst of star formation. Interactions between this galaxy pair funneled gas into the center of NGC 5394, providing the raw materials for new stars.
Credit: KPNO, NOIRLab, NSF, AURA, D. Matthews, E. J. Jones, A. Block
Source: https://noirlab.edu/public/images/noao-n5394matthews/ -
Image of Arp 16, also known as M66, from the Atlas of Peculiar Galaxies by Halton Arp (1966).
In the original catalog, it was in the category: Spiral galaxies - Detached segments. M66 is a face-on spiral galaxy with a weak bar and loosely wound arms that are full of young star clusters.
-
Image of Arp 16, also known as M66, from the Atlas of Peculiar Galaxies by Halton Arp (1966).
In the original catalog, it was in the category: Spiral galaxies - Detached segments. M66 is a face-on spiral galaxy with a weak bar and loosely wound arms that are full of young star clusters.
-
Chandra image of Arp 220, also known as IC 4553.
The merger of two spiral galaxies set of a burst of star formation in Arp 220.
This X-ray image shows the location of the hottest gas in the galaxy merger. The central bright point contains the remnant cores of the two galaxies, which are about 1,200 light-years apart.
Credit: NASA, CXC, SAO, L. Frattare, J. Major
Source: https://chandra.harvard.edu/photo/2024/25th/more.html -
Chandra image of Arp 220, also known as IC 4553.
The merger of two spiral galaxies set of a burst of star formation in Arp 220.
This X-ray image shows the location of the hottest gas in the galaxy merger. The central bright point contains the remnant cores of the two galaxies, which are about 1,200 light-years apart.
Credit: NASA, CXC, SAO, L. Frattare, J. Major
Source: https://chandra.harvard.edu/photo/2024/25th/more.html -
Legacy Surveys image of Arp 10, also known as UGC 1775.
About 85 million years ago, another galaxy likely collided with Arp 10 near its center. This created a density wave that spread outwards, like a ripple in a pond, forming a ring of new stars in the freshly compacted gas. The intruder galaxy appears as a knot below and left of the nucleus.
Credit: Legacy Surveys, D. Lang, NERSC, Meli thev, Wikimedia Commons
Source: https://commons.wikimedia.org/wiki/File:Arp_10_legacy_dr10.jpg -
Legacy Surveys image of Arp 10, also known as UGC 1775.
About 85 million years ago, another galaxy likely collided with Arp 10 near its center. This created a density wave that spread outwards, like a ripple in a pond, forming a ring of new stars in the freshly compacted gas. The intruder galaxy appears as a knot below and left of the nucleus.
Credit: Legacy Surveys, D. Lang, NERSC, Meli thev, Wikimedia Commons
Source: https://commons.wikimedia.org/wiki/File:Arp_10_legacy_dr10.jpg -
Image of Arp 1, also known as NGC 2857, from the Atlas of Peculiar Galaxies by Halton Arp (1966).
In the original catalog, it was in the category: Spiral galaxies - Low surface brightness. It is a spiral galaxy in the constellation Ursa Major.
-
Image of Arp 1, also known as NGC 2857, from the Atlas of Peculiar Galaxies by Halton Arp (1966).
In the original catalog, it was in the category: Spiral galaxies - Low surface brightness. It is a spiral galaxy in the constellation Ursa Major.
-
Hubble image of Arp 299, also known as NGC 3690.
Interactions between these two galaxies triggered a fierce burst of star formation, making Arp 299 one of the most powerful nearby starburst galaxies. At least 10 supernovae have been recorded in the galaxies, although there have likely been more, hidden by the large amount of interstellar dust in the merger.
Credit: NASA, ESA, the Hubble Heritage Team, A. Evans
Source: https://science.nasa.gov/asset/hubble/hubble-interacting-galaxy-ngc-3690/ -
Hubble image of Arp 299, also known as NGC 3690.
Interactions between these two galaxies triggered a fierce burst of star formation, making Arp 299 one of the most powerful nearby starburst galaxies. At least 10 supernovae have been recorded in the galaxies, although there have likely been more, hidden by the large amount of interstellar dust in the merger.
Credit: NASA, ESA, the Hubble Heritage Team, A. Evans
Source: https://science.nasa.gov/asset/hubble/hubble-interacting-galaxy-ngc-3690/ -
Kitt Peak image of Arp 297, also known as NGC 5755, NGC 5753, NGC 5754 and NGC 5752.
This wide view shows two interacting galaxy pairs. The pairs are actually unrelated and are at different distances.
Credit: KPNO, NOIRLab, NSF, AURA, B. Lofquist, A. Block
Source: https://noirlab.edu/public/images/noao-n5754lofquist/ -
Kitt Peak image of Arp 297, also known as NGC 5755, NGC 5753, NGC 5754 and NGC 5752.
This wide view shows two interacting galaxy pairs. The pairs are actually unrelated and are at different distances.
Credit: KPNO, NOIRLab, NSF, AURA, B. Lofquist, A. Block
Source: https://noirlab.edu/public/images/noao-n5754lofquist/ -
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.
-
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.
-
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.
-
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.
-
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/ -
Hubble image of Arp 302, also known as UGC 9618 or VV 340.
Arp 302 consists of a pair of very gas-rich spiral galaxies in the early stages of an interaction.
This image is part of a collection of 59 images of merging galaxies taken by the Hubble Space Telescope and released for its 18th anniversary in April 2008.
Credit: NASA, ESA, STScI, A. Evans
Source: https://science.nasa.gov/asset/hubble/hubble-interacting-galaxy-ugc-9618/ -
Hubble image of Arp 302, also known as UGC 9618 or VV 340.
Arp 302 consists of a pair of very gas-rich spiral galaxies in the early stages of an interaction.
This image is part of a collection of 59 images of merging galaxies taken by the Hubble Space Telescope and released for its 18th anniversary in April 2008.
Credit: NASA, ESA, STScI, A. Evans
Source: https://science.nasa.gov/asset/hubble/hubble-interacting-galaxy-ugc-9618/ -
Spitzer image of Arp 107, also known as UGC 5984.
In the shorter wavelength 3.6 micron band (left), the older stars in the small companion to the upper left and the bridge connecting the two galaxies are bright. the middle image at 8 microns provides a clear view of clumps of young stars. The multi-band picture (right) emphasizes this difference in stellar ages.
Credit: NASA, JPL-Caltech, B. J. Smith
Source: https://www.spitzer.caltech.edu/image/sig05-006-interacting-galaxy-pair-arp-107 -
Spitzer image of Arp 107, also known as UGC 5984.
In the shorter wavelength 3.6 micron band (left), the older stars in the small companion to the upper left and the bridge connecting the two galaxies are bright. the middle image at 8 microns provides a clear view of clumps of young stars. The multi-band picture (right) emphasizes this difference in stellar ages.
Credit: NASA, JPL-Caltech, B. J. Smith
Source: https://www.spitzer.caltech.edu/image/sig05-006-interacting-galaxy-pair-arp-107 -
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.
-
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.
-
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.
-
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.
-
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 -
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.
-
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.
-
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.
-
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.
-
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.
-
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.
-
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/