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#arpgalaxy

7 posts6 participants1 post today
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Arp Bot 🤖

JWST NIRCam image of Arp 142, also known as NGC 2936 and NGC 2937, or the Penguin and the Egg.

In this wide view, we see the Penguin (laying on its back) and the Egg, and the foreground edge-on spiral PGC 1237172. There are also a large number of distant galaxies, some seen as tiny spirals and ellipticals, and many appearing as dots.

Credit: NASA, ESA, CSA, STScI
Source: webbtelescope.org/contents/med

Arp 142, two interacting galaxies, take up less than a third of the frame. At the top is NGC 2937, nicknamed the Egg. Its center is brighter and whiter. There are six diffraction spikes atop its gauzy blue layers. At the center is NGC 2936, nicknamed the Penguin. In this view it is resting on its back, facing up. Its beak-like region points toward and above the Egg. Where the eye would be is a small, opaque yellow spiral. The Penguin’s distorted arms and thin red dust lanes from the bird’s beak, back, and tail. The tail is wide and layered, like a beta fish’s tail. A semi-transparent blue hue traces the Penguin and extends from the galaxy, creating an upside-down U over top of both galaxies. At bottom center-right is another galaxy seen from the side, pointing at an angle. It is largely light blue. Its length appears approximately as long as the Egg’s height. There are several foreground stars with large, bright blue diffraction spikes. The wide black background is filled with tiny, extremely distant galaxies.
#ArpGalaxy#Galaxy#Space
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GALEX and SDSS image of Arp 285, also known as NGC 2854 and NGC 2856.

The left image from GALEX shows Arp 285 in ultraviolet light. The right image is from the visible light Sloan Digital Sky Survey.

The upper galaxy, NGC 2856, has a clumpy tail perpendicular to its disk, an example of a “beads on a string” feature. Gravity creates knots of star formation at regular intervals.

Credit: Fig. 12 from Smith et al. 2010.
Source: iopscience.iop.org/article/10.

A two-panel image. The left panel is labeled Arp 285 GALEX. A scale bar marks 1 arcminute, which is about 1/8 the width of the frame. The panel shows a low-res image of a pair of interacting galaxies in shades of grey. The galaxy in the top left is oval-shaped and has a line extends above the galaxy, extending perpendicular to its disk. The galaxy in the lower right has two spiral arms. It has a brighter patch off-center in the core near the lower spiral arm. A bright foreground star appears as a red dot with four diffraction spikes in the upper right. The right panel is labeled Arp 285 SDSS and has a similar 1 arcminute scale bar. It shows the same galaxies at the same scale and is higher resolution. The galaxy in the top left has a bright yellow disk seen at a slight angle so that it appears oval-shaped. It's spiral arms are fainter and hard to see detail. A thin, blue, clumpy line extends above the galaxy, perpendicular to its disk. The galaxy in the lower right has a strong bar and two spiral arms, forming a distinct S shape. The bar is brighter and yellow-ish. The arms are bluer. A bright foreground star appears as a dot in the upper right.
#ArpGalaxy#Galaxy#Space
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Arp Bot 🤖

Spitzer, Hubble, and Chandra image of Arp 26, also known as M101 or the Pinwheel Galaxy.

In the infrared light Spitzer view we see a network of yellow-green of dust lanes. In the visible light Hubble view, the dust is dark and blue star clusters dot the spiral arms. In the X-ray Chandra view, we see million-degree gas, supernova remnants, neutron stars, and black holes.

Credit: NASA, ESA, CXC, JPL, Caltech, STScI
Source: spitzer.caltech.edu/image/ssc2

A three-panel image, showing Spitzer, Hubble, and Chandra views of the same Spiral Galaxy M101. On the left is the Spitzer view. From a small central core, several arms spiral clockwise. They are defined by a network of yellow-green filamentary dust lanes, which look somewhat like a cross section of a nautilus. The arms are dotted with pink star-forming regions and filled in with a haze of blue stars. One spiral arm curls from about 6 o'clock to 9 o'clock and is mostly separated from the body of the galaxy. The other spiral arms are less distinct. In the middle is the Hubble view. A face-on spiral galaxy has a yellow core. Several spiral arms, dotted with blue stars and star clusters, spiral clockwise around the core. They are crossed by filamentary dust lanes. The arms are somewhat well-defined but asymmetric. One arm curls from about 6 o'clock to 9 o'clock and is mostly separated from the body of the galaxy. Another arm follows more closely to the core, from about 6 o'clock to 12 o'clock. Three other arms cover the area from 12 o'clock to 6 o'clock. On the right is the Chandra view. In this panel, blue and purple splotches partially define spiral arms. These arms are smaller and less distinct than in the other views. White dots are scattered throughout the image, including a concentration of points at the galaxy's core. Credit: NASA, ESA, CXC, JPL, Caltech, STScI. ssc2009-03b
#ArpGalaxy#Galaxy#Space
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Hubble image of Arp 284, also known as NGC 7714 and NGC 7715.

In this image of NGC 7714, we see a golden loop of of Sun-like stars that has been separated from the young, blue stars in the arms and bar of the galaxy. They were pulled like taffy during a close encounter with its companion galaxy, NGC 7715 (out of frame), about 100 million to 200 million years ago.

Credit: NASA, ESA, A. Gal-Yam
Source: hubblesite.org/contents/media/

The galaxy is offset on the left side of the frame. Its center is a bright white-blue. From the center extends a wispy tan spiral arm, first going toward the top and then circling counterclockwise before dissipating just below the center of the galaxy. Two bright blue spiral arms, dotted with whiter areas of star formation, follow a similar counterclockwise path, but the blue spiral arms end in thin, dim lines that extend to the left side of the image, going off frame, and toward the right. There are tiny red background galaxies along the top third of the frame, and one prominent foreground star toward the bottom third.
#ArpGalaxy#Galaxy#Space
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Gemini North image of Arp 336, also known as NGC 2685 or the Helix Galaxy.

NGC 2685 is a polar ring galaxy. It has a ring of gas, stars, and dust that orbits perpendicular to the plane of the galaxy. This structure likely formed through an interaction which captured material from another galaxy.

Credit: International Gemini Observatory, NOIRLab, NSF, AURA, L. Bassino
Source: noirlab.edu/public/images/iotw

A lenticular galaxy has an pale yellow central core that forms a fuzzy bar structure. Surrounding this is an almond-shaped area with bluer stars and star clusters. Together, they somewhat resemble an eye. Several brown, slightly curved dust lanes cross the galaxy vertically on its left half. The black background of space is dotted with stars and smaller galaxies.
#ArpGalaxy#Galaxy#Space
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Arp Bot 🤖

Hubble image of Arp 298, also known as NGC 7469 and IC 5283.

NGC 7469, a face-on spiral galaxy, and its companion galaxy IC 5283, seen to the upper right, form an interacting pair.

IC 5283 shows signs of significant gravitational perturbations caused by its companion, including a tidal tail dotted with young, blue star clusters that trails off to the right.

Credit: ESA, NASA, A. Evans, R. Chandar
Source: esahubble.org/images/potw2208a/

The image is dominated by a pair of galaxies, a large, face-on spiral to the lower left and its smaller companion galaxy to the upper right. The galaxy has a bright pink-white central core that is surrounded by a wide, yellow bar. Several somewhat poorly defined spiral arms begin at the edge of the bar, made of blue stars and star clusters. They are dotted with pink star-forming regions and crossed by brown dust lanes primarily on the right side of the galaxy closer to the companion galaxy. A foreground star with Hubble's characteristic 4-pointed diffraction spikes sits on top of one of the arms to the upper left. The companion galaxy sits above and to the right of the large spiral. It appears to be a distorted, almost edge-on disk galaxy. It has an elongated oval shape of yellow stars, sitting diagonally, roughly parallel to the bar of the large spiral. Brown dust lanes cross the center of the oval, dotted with pink star-forming regions. Below the galaxy is a line of stars and gas that trails off down and to the right. In the center of the tail are bright blue dots, which are young star clusters. Several smaller background galaxies and foreground stars appear on the black background of space.
#ArpGalaxy#Galaxy#Space
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Hubble image of Arp 148, also known as Mayall's Object.

The nickname comes from astronomer Nicholas Mayall, who first imaged the object in 1940 and noted it looked like a question mark.

The galaxy to the left likely crashed through the galaxy on the right, creating a ring and triggering a burst of star formation.

Credit: NASA, ESA, STScI, A. Evans, K. Noll, and J. Westphal
Source: hubblesite.org/contents/media/

A pair of interacting galaxies. The galaxy on the left is likely an edge-on disk galaxy, appearing as a slightly warped, fuzzy, white horizontal line with dust filaments at its center. The galaxy on the right is a ring galaxy, appearing as a blue circular ring, dotted with blue star clusters, that also has its center partially filled in with blue star clusters. The two galaxies overlap so that the right end of the edge-on galaxy intersects with the ring galaxy's center. It looks a bit like a big blue hand holding the Enterprise in a classic episode of Star Trek.
#ArpGalaxy#Galaxy#Space
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Hubble image of Arp 299, also known as NGC 3690.

This image was taken in 2000 with Hubble's WFPC2 instrument to study the galaxies' hottest and brightest stars in ultraviolet light. Blue and green are ultraviolet, red is visible light. The observations show large amounts of interstellar dust in these merging galaxies.

Credit: NASA, R. Windhorst, and the Hubble mid-UV team
Source: hubblesite.org/contents/media/

Two merging galaxies form an orange and blue abstract butterfly shape. Within the shape are bright blue areas, which are clusters of young, hot stars. These are found in the center, the upper right "wing", and the bottom left "wing".
#ArpGalaxy#Galaxy#Space
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Hubble image of Arp 194, also known as UGC 6945.

The upper component of this interacting galaxy group has two nuclei that appear to be connected and in the early stages of merging along with trails of blue super star clusters. The lower component of the group is a single large spiral galaxy with its own star clusters.

Credit: NASA, ESA, and the Hubble Heritage Team
Source: hubblesite.org/contents/media/

A group of three interacting spiral galaxies which resembles a question mark. At the top of the frame are two spiral galaxies in the process of merging. One of these galaxies has a bright yellow core connected to a short bar and two loose spiral arms. This forms a S-shape. Above this is another circular, yellow galaxy core which overlaps with the top spiral arm of the S-shaped galaxy. On the outer edges of the spiral arms are blue star clusters. Together these form the top curved half of the question mark. To the right of the S-shaped galaxy is a small, relatively normal-looking spiral galaxy, which is likely in the background. At the bottom of the frame is another large spiral galaxy. This galaxy has a bright core and somewhat ill-defined spiral arms which wind counterclockwise around the core. On the bottom half of the galaxy are blue star clusters. This forms the dot of the question mark. Connecting the merging galaxies at the top of the frame and the spiral at the bottom of the frame is a string of blue super star clusters, seen as large blue dots. This forms the straight part of the question mark. On the black background of space are several yellow and red dots, which are background galaxies.
#ArpGalaxy#Galaxy#Space
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Hubble image of Arp 300, also known as UGC 05028 and UGC 05029 .

UGC 05028 (the smaller spiral galaxy) and UGC 05029 (the larger spiral) form an interacting pair.

Interactions with its companion likely gave UGC 05028 its asymmetric structure. The bright knot in the bottom right of UGC 05028 may be yet another small galaxy that is in the process of merging.

Credit: NASA, ESA, J. Dalcanton, R. Windhorst, Gladys Kober
Source: science.nasa.gov/missions/hubb

The frame is dominated by a pair of spiral galaxies. The larger galaxy to the bottom right is seen nearly face-on. It has a small yellow core and many spiral arms that are dotted with blue star clusters, with more star clusters appearing on the top of the galaxy, the side that faces its companion. There are a few brown dust lanes, concentrated near the inner spiral arms. The smaller spiral galaxy to the upper right has a yellow bar structure that is surrounded by blue star clusters that only very roughly form spiral arms. On the right side of the galaxy is a yellow knot of stars that is brightest in its center, crossed by brown dust lanes. This may be a seperate dwarf galaxy that is either in front of the smaller spiral or is in the process of merging with it. Other distant galaxies and stars fill the black background of space.
#ArpGalaxy#Galaxy#Space
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Hubble image of Arp 107, also known as UGC 5984.

The one-armed spiral and its smaller elliptical companion galaxy are gravitationally interacting with one another, which is likely responsible for the spiral galaxy's unusual shape, as well as the bridge of gas and stars that connects the two galaxies.

Credit: ESA, NASA, J. Dalcanton, Dark Energy Survey, DOE, FNAL, NOIRLab, NSF, AURA, SDSS
Source: esahubble.org/images/potw2338a/

A pair of merging galaxies. The galaxy on the left has a single, large spiral arm curving out from the core and around to below it, with very visible glowing dust and gas. The right-hand galaxy has a bright core but only a bit of very faint material. A broad curtain of gas connects the two galaxies’ cores and hangs beneath them. A few small stars and galaxies are scattered around the black background.
#Hubble#ArpGalaxy#Galaxy
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Arp Bot 🤖

Image of Arp 85, also known as the Whirlpool Galaxy or M51, 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. Halton Arp mistakenly believed that the smaller galaxy, NGC 5195, was being ejected from the Whirlpool. In reality, the two galaxies are in the process of merging.

Source: ned.ipac.caltech.edu/level5/Ar

A grainy, black and white image of two galaxies. The larger of the two galaxies, a spiral, is on the left side of the image. Two well-defined arms extend to from its center and form loose spirals around the middle. The smaller galaxy on the far-right side is fuzzy sphere. The view of this smaller galaxy is partially obstructed by the tip of one of the arms of the spiral galaxy, which appears to cover the top third of the smaller galaxy. Many white dots, stars, are seen on the black background.
#ArpGalaxy#Galaxy#Space
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Image of Arp 285, also known as NGC 2854 and NGC 2856, from the Atlas of Peculiar Galaxies by Halton Arp (1966).

In the original catalog, it was in the category: Double and multiple galaxies - Infall and attraction. The upper galaxy, NGC 2856, has a clumpy tail perpendicular to its disk. It's an example of a “beads on a string” feature, where gravity creates knots of star formation at regular ~3,000 light year intervals.

Source: ned.ipac.caltech.edu/level5/Ar

A grainy, black and white image of a a pair of widely-space interacting spiral galaxies. The galaxy in the lower right has a bright disk seen at a slight angle so that it appears oval-shaped. It's spiral arms are fainter, but its lower arm is slightly brighter. A thin, clumpy line extends below the galaxy, perpendicular to its disk. The galaxy in the upper left has a strong bar and two spiral arms, forming a distinct S shape. The arms are dotted with star clusters. Faint streams of material extend out from the ends of the spiral arms. Several foreground stars are seen as bright dots. The brightest star, in the upper left, has four diffraction spikes.
#ArpGalaxy#Galaxy#Space
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Hubble image of Arp 87, also known as NGC 3808 and NGC 3808A.

NGC 3808 (right) is a nearly face-on spiral galaxy with a bright ring of star formation and two spiral arms. It is interacting with its companion NGC 3808A (left). NGC 3808A is seen edge-on and is surrounded by a ring of stars and gas perpendicular to the plane of its disk, making it a polar ring galaxy.

Credit: NASA, ESA, and the Hubble Heritage Team
Source: hubblesite.org/contents/media/

A pair of interacting galaxies. On the right is a nearly face-on spiral. It has a small, bright central core, surrounded by a haze of yellow stars. Surrounding this is a ring of blue stars, dotted by blue star clusters. Two wide spiral arms emerge from the ring, crossed by dark brown dust lanes. They fan out, almost connecting back to the main body of the galaxy. A line of blue star clusters begins at the left spiral arm and arcs around the body of the galaxy. The left arm extends out connecting to its companion galaxy at left. The left galaxy is an edge-on disk, seen as a wide, angled line of yellowish stars. A stream of blue stars, star clusters, and gas appears to come from its companion's spiral arm and wrap one and a half times around the disk galaxy. A third galaxy, a smaller edge-on spiral, is seen to the left of the disk galaxy. The black background of space is dotted with a few foreground stars and tiny background galaxies.
#ArpGalaxy#Galaxy#Space
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