Hickson 44

HCG 44
	Galaxy Group HCG 44 in Ultraviolet light as seen by GALEX
Observation data (Epoch )
Constellation(s)	Leo
Right ascension	10h 18m 02ss [1]
Declination	21° 49′ [1]
Number of galaxies	4
Distance ; (co-moving)	80 million
Other designations
	None
	See also: Galaxy groups, Galaxy clusters, List of galaxy clusters

Last updated April 07, 2019

Hickson 44 (HCG 44) is a group of galaxies in the constellation Leo. As Arp 316, a part of this group is also designated as group of galaxies in the Atlas of Peculiar Galaxies.

Leo is one of the constellations of the zodiac, lying between Cancer the crab to the west and Virgo the maiden to the east. Its name is Latin for lion, and to the ancient Greeks represented the Nemean Lion killed by the mythical Greek hero Heracles meaning 'Glory of Hera' as one of his twelve labors. Its symbol is . One of the 48 constellations described by the 2nd-century astronomer Ptolemy, Leo remains one of the 88 modern constellations today, and one of the most easily recognizable due to its many bright stars and a distinctive shape that is reminiscent of the crouching lion it depicts. The lion's mane and shoulders also form an asterism known as "The Sickle," which to modern observers may resemble a backwards "question mark."

The Atlas of Peculiar Galaxies is a catalog of peculiar galaxies produced by Halton Arp in 1966. A total of 338 galaxies are presented in the atlas, which was originally published in 1966 by the California Institute of Technology. The primary goal of the catalog was to present photographs of examples of the different kinds of peculiar structures found among galaxies.

Members

**Members of the HCG 87**
Name	Type ^[2]	R.A. (J2000)^[2]	Dec. (J2000)^[2]	Redshift (km/s)^[2]	Apparent Magnitude ^[2]
NGC 3185	(R)SB(r)a	10^h 17^m 38.584^s	+21° 41′ 17.82″	0.004060	12.17
NGC 3187	SB(s)c	10^h 17^m 47.865^s	+21° 52′ 24.00″	0.005274	12.77
NGC 3190	SA(s)0−	10^h 18^m 05.6^s	+21° 49′ 58″	0.004240	11.1
NGC 3193	SA(s)0−	10^h 18^m 24.9^s	+21° 53′ 4″	0.004607	10.81

Related Research Articles

Seyfert's Sextet is a group of galaxies about 190 million light-years away in the constellation Serpens. The group appears to contain six members, but one of the galaxies is a background object and another "galaxy" is actually a separated part of one of the other galaxies. The gravitational interaction among these galaxies should continue for hundreds of millions of years. Ultimately, the galaxies will merge to form a single giant elliptical galaxy.

HCG 87 is a compact group of galaxies listed in the Hickson Compact Group Catalogue. This group is about 400 million light-years away in the constellation Capricornus. The group distinguishes itself as one of the most compact groups of galaxies, hosting two active galactic nuclei and a starburst among its three members, all of which show signs of interaction. This interaction, which astronomers have called visually, and scientifically, intriguing is being examined to understand the influence of active nuclei on star formation histories.

NGC 2903 is a field barred spiral galaxy about 30 million light-years away in the constellation Leo. It was discovered by William Herschel who cataloged it on November 16, 1784. NGC 2905 is a bright star cloud within this galaxy. NGC 2903 has a very high speed of creating new stars in the central region.

NGC 6744 is an intermediate spiral galaxy about 30 million light-years away in the constellation Pavo. It is considered as a Milky Way mimic in our immediate vicinity, displaying flocculent (fluffy) arms and an elongated core. It also has at least one distorted companion galaxy superficially similar to one of the Magellanic Clouds. It was discovered from Parramatta in Australia by Scottish astronomer James Dunlop on 30 June 1826.

NGC 5112 is a barred spiral galaxy in the constellation Canes Venatici. This galaxy is in close physical proximity to the edge-on dwarf spiral NGC 5107.

Arp 87 is a pair of two interacting galaxies, NGC 3808A and NGC 3808B. They are situated in the Leo constellation. NGC 3808A, the brighter, is a peculiar spiral galaxy, while NGC 3808B is an irregular galaxy.

NGC 145 spiral galaxy in the constellation Cetus

NGC 145, also known as Arp 19, is a barred spiral galaxy in Cetus, notable for its three spiral arms.

UGC 2140 is an irregular galaxy in the constellation Aries. It was thought to be a compact group of galaxies, catalogued as HCG 18, but in 1999 the object was found to be a single galaxy with multiple star-forming regions.

NGC 13 is a spiral galaxy in the constellation Andromeda. It was discovered on November 26, 1790 by William Herschel

NGC 14 is an irregular galaxy in the Pegasus constellation. It was included in Halton Arp's Atlas of Peculiar Galaxies, under the section "Galaxies with the appearance of fission," since the irregular appearance of this galaxy causes it to look like it is separating apart. It was discovered on September the 18th 1786 by William Herschel.

NGC 27 spiral galaxy in the constellation Andromeda

NGC 27 is a spiral galaxy located in the Andromeda constellation. It was discovered on 3 August 1884 by Lewis Swift.

NGC 3185 is a spiral galaxy located 20.4 Mpc away in the Leo constellation. NGC 3185 is a member of a four-galaxy group called HCG 44.

NGC 201 is a spiral galaxy in the constellation of Cetus. It is one of the group members of HCG 7, with the other group members NGC 192, NGC 196, and NGC 197. It was discovered on December 28, 1790 by William Herschel.

NGC 1741 is a distant pair of interacting galaxies in the Eridanus constellation. It was discovered on 6 January 1878 by French astronomer Édouard Stephan. As a result of the collision, the galaxies are in a rapid starbust phase. The galaxies are classed as Wolf–Rayet galaxies due to their high content of rare Wolf–Rayet stars.

NGC 1190 is a lenticular galaxy approximately 109 million light-years away from Earth in the constellation of Eridanus. It was discovered by American astronomer Francis Leavenworth on December 2, 1885 with the 26" refractor at Leander McCormick Observatory.

NGC 1189 is a barred spiral galaxy approximately 105 million light-years away from Earth in the constellation of Eridanus. It was discovered by American astronomer Francis Leavenworth on December 2, 1885 with the 26" refractor at Leander McCormick Observatory.

NGC 1191 is a lenticular galaxy approximately 406 million light-years away from Earth in the constellation of Eridanus. It was discovered by American astronomer Francis Leavenworth on December 2, 1885 with the 26" refractor at Leander McCormick Observatory.

NGC 1199 is an elliptical galaxy approximately 107 million light-years away from Earth in the constellation of Eridanus. It was discovered by William Herschel on December 30, 1785.

NGC 1192 is a lenticular galaxy approximately 417 million light-years away from Earth in the constellation of Eridanus. It was discovered by American astronomer Francis Leavenworth on December 2, 1885 with the 26" refractor at Leander McCormick Observatory.

References

1 2 "NASA/IPAC Extragalactic Database". Results for HCG 44. Retrieved 2018-03-16.
1 2 3 4 5 "NASA/IPAC Extragalactic Database". Results for various galaxies. Retrieved 2018-03-16.

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[ned-1] 1 2 "NASA/IPAC Extragalactic Database". Results for HCG 44. Retrieved 2018-03-16.

[ned2-2] 1 2 3 4 5 "NASA/IPAC Extragalactic Database". Results for various galaxies. Retrieved 2018-03-16.