Arp 251

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Arp 251
Arp 251.png
Observation data (Epoch J2000)
Constellation(s) Cetus
Right ascension 00h53m
Declination -13°51'
Number of galaxies3
See also: Galaxy group, Galaxy cluster, List of galaxy groups and clusters

Arp 251 is a group of three spiral galaxies. The galaxies (2MASX J00534840-1351148, 2MASX J00534765-1351358 and 2MASX J00533671-1349541) are visible in the constellation Cetus. [1] Arp 251 is cataloged in the Atlas of Peculiar Galaxies, [2] which is a catalog of unusual galaxies put into groups based on purely morphological criteria. Arp 251 belongs to the class of galaxies with signs of splitting. [3]

Contents

Galaxies

Source: [4]

2MASX J00534840-1351148

2MASX J00534 is the northernmost galaxy in Arp 251. It spans 30 arc-seconds in apparent view, which corresponds to a diameter of 170,000 light years.  The upper arm is disturbed, meaning that galaxy interaction may be present.  

2MASX J00534765-1351358

2MASX J005347 is the southernmost galaxy out of the triplet and has a magnitude of 15.1. It's visual magnitude is unknown.

2MASX J00533671-1349541

2MASX J005446 has a magnitude of 16.4 and a redshift distance of 700 million+ light-years. It has a larger angular size than the other galaxies making up Arp 251.

See also

Related Research Articles

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NGC 497 is a barred spiral galaxy approximately 336 million light-years away from Earth in the constellation of Cetus. It was discovered by French astronomer Édouard Stephan on November 6, 1882.

<span class="mw-page-title-main">IC 4271</span> Spiral galaxy located in constellation Canes Venatici

IC 4271 is a spiral galaxy located some 800 million light-years away in the Canes Venatici constellation. It is 130,000 light-years in diameter. IC 4271 was first located on July 10, 1896, by Stephane Javelle, a French astronomer. It hosts a Seyfert type 2 nucleus, containing an acceleration disc around its supermassive black hole which releases large amounts of radiation, hence its bright appearance. IC 4271 appears to be interacting with its smaller neighboring galaxy, PGC 3096774.

<span class="mw-page-title-main">UGC 717</span> Spiral galaxy located in constellation Pisces

UGC 717 is a barred spiral galaxy located in Pisces. The galaxy is located 520 million light-years away from the solar system. It is designated as Arp 11 in the Atlas of Peculiar Galaxies which was produced by Halton Arp. UGC 717 falls under the category of spirals that have split-arms. It is known to have a LINER active galactic nucleus according to SIMBAD.

<span class="mw-page-title-main">Arp 146</span> Interacting galaxies in the constellation Cetus

Arp 146 are a pair of interacting galaxies located 1.05 billion light-years away from Earth in the Cetus constellation. According to a study, one galaxy appears to have passed through another, leaving behind a ring formed from the bridge material and remnants of the nucleus. Under the Atlas of Peculiar Galaxies created by Halton Arp, they are categorized under galaxies that have associated rings.

<span class="mw-page-title-main">PGC 4789</span> Spiral galaxy in the constellation Pisces

PGC 4789 is a distant barred spiral galaxy in the Pisces constellation. It is located 675 million light-years from the Milky Way and seems to be interacting with its neighboring galaxies. it is known as Arp 48 in the Atlas of Peculiar Galaxies catalogue. In this class, PGC 4789 falls into galaxies that have at least one low surface brightness companion.

<span class="mw-page-title-main">UGC 934</span> Galaxy in the constellation Pisces

UGC 934, known as PGC 5085, is a large spiral galaxy about 470 million light-years away from the solar system. It is located in the constellation of Pisces and about 285,000 thousand light-years in diameter. With its neighboring galaxy PGC 212740, they together form Arp 70, the 70th number in the Atlas of Peculiar Galaxies which was created by Halton Arp. In this class, they fall under spiral galaxies that have a small high-surface brightness companions.

<span class="mw-page-title-main">UGC 4881</span> Peculiar galaxies in the constellation Lynx

UGC 4881 is a pair of interacting galaxies, UGC 4881A and UGC 4881B. They are located in the constellation Lynx, some 500 million light-years away. UGC 4881, the brighter, is a peculiar spiral galaxy. It has been heavily documented by the Hubble Space Telescope, and is cataloged in the Atlas of Peculiar Galaxies.

<span class="mw-page-title-main">UGC 4653</span> Trio of interacting galaxies in the constellation Lynx

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<span class="mw-page-title-main">NGC 7393</span> Galaxy in the constellation Aquarius

NGC 7393 is a barred spiral galaxy in the constellation Aquarius. It is estimated to about 120 million light-years from the Milky Way and about 70,000 light-years in diameter. NGC 7393 belongs to the class of spiral galaxies with separated sections in the Arp catalog. Astronomer Halton Arp divided his catalog of unusual galaxies into groups based on purely morphological criteria. NGC 7393 was discovered by astronomer William Herschel on October 5, 1785.

<span class="mw-page-title-main">UGC 1840</span> Interacting galaxies in the constellation Andromeda

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<span class="mw-page-title-main">UGC 224</span> Interacting galaxies in the constellation Pisces

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<span class="mw-page-title-main">NGC 7829</span> Galaxy in the constellation Cetus

NGC 7829 is a lenticular galaxy in the constellation Cetus. NGC 7829 was discovered by American astronomer Francis Leavenworth in 1886. NGC 7829 forms with its neighbor NGC 7828 a pair of gravitationally interacting galaxies. The pair appears in Halton Arp's Atlas of Peculiar Galaxies as Arp 144.

<span class="mw-page-title-main">NGC 5279</span> Galaxy in the constellation Ursa Major

NGC 5279 is a spiral galaxy in the constellation Ursa Major. It was discovered by German-British astronomer William Herschel in 1789. NGC 5279 is in gravitational interaction with the galaxy NGC 5278. This pair of galaxies appears in Halton Arp's Atlas of Peculiar Galaxies under the designation Arp 239. The luminosity class of NGC 5279 is I1. NGC 5279 is a galaxy whose core shines in the ultraviolet region. It is listed in the Markarian catalog under the designation Mrk 271.

<span class="mw-page-title-main">NGC 3753</span>

NGC 3753 is a large spiral galaxy with a bar located in the Leo constellation. It is located 435 million light-years away from the Solar System and was discovered on February 9, 1874, by Ralph Copeland.

<span class="mw-page-title-main">NGC 3750</span>

NGC 3750 is a lenticular galaxy with a bar located in the constellation of Leo. It is located 450 million light-years from the Solar System and was discovered by Ralph Copeland on February 9, 1874.

<span class="mw-page-title-main">NGC 3751</span>

NGC 3751 is a type E-S0 lenticular galaxy located in the Leo constellation. It is located 450 million light-years away from the Solar System and was discovered by Ralph Copeland on April 5, 1874.

<span class="mw-page-title-main">Arp 60</span>

Arp 60 also known as PGC 1762846, is a barred spiral galaxy located in Coma Berenices. It is located 958 million light-years from the Solar System and has an approximate diameter of 95,000 light-years.

<span class="mw-page-title-main">NGC 3800</span> Galaxy in the constellation Leo

NGC 3800 is an intermediate spiral galaxy located in the constellation Leo. Its speed relative to the cosmic microwave background is 3,653 ± 24 km/s, which corresponds to a Hubble distance of 53.9 ± 3.8 Mpc. NGC 3800 was discovered by German-British astronomer William Herschel in 1784.

<span class="mw-page-title-main">NGC 3799</span> Galaxy in the constellation Leo

NGC 3799 is a barred spiral galaxy located in the constellation Leo. Its speed relative to the cosmic microwave background is 3,659 ± 24 km/s, which corresponds to a Hubble distance of 54.0 ± 3.8 Mpc. NGC 3799 was discovered by British astronomer John Herschel in 1832.

<span class="mw-page-title-main">NGC 6365</span> Galaxy pair in the constellation Draco

NGC 6365 is a pair of spiral galaxies in the constellation Draco. It consists of two galaxies, PGC 60174 to the south, and PGC 60171 to the north. These two galaxies are also designated respectively by the NASA/IPAC database as NGC 6365A and NGC 6365B. This pair of galaxies was discovered by German astronomer Lewis Swift in 1884.

References

  1. Ford, Dominic. "The Arp's Catalog Of Peculiar Galaxies in Cetus". In-The-Sky.org. Retrieved 2024-04-22.
  2. "Halton Arp's Atlas of Peculiar Galaxies". cseligman.com. Retrieved 2024-04-22.
  3. "ARP Atlas of Peculiar Galaxies". ned.ipac.caltech.edu. Retrieved 2024-04-22.
  4. "Your NED Search Results". ned.ipac.caltech.edu. Retrieved 2024-04-22.