NGC 3754 | |
---|---|
Observation data (J2000 epoch) | |
Constellation | Leo |
Right ascension | 11h 37m 54.921s |
Declination | +21d 59m 07.80s |
Redshift | 0.029952 |
Heliocentric radial velocity | 8,979 km/s |
Distance | 447 Mly (137 Mpc) |
Group or cluster | Copeland Septet |
Apparent magnitude (V) | 14.3 |
Characteristics | |
Type | SBc |
Size | 58,000 ly |
Other designations | |
PGC 36018, CGCG 127-012N, MCG +04-28-011, VV 282b, Copeland Septet NED07, 2MASS J1137549+2159080, SDSS J113754.92+215907.8, HCG 057D, NSA 112842, AGC 210537, NVSS J113754+215910, 2XMM J113755.0+215908, LEDA 36018 |
NGC 3754 is a small barred spiral galaxy [1] located in Leo. [2] It is located 447 million light-years away from the Solar System [3] and was discovered on April 5, 1874, by Ralph Copeland. [4]
The luminosity class of NGC 3754 is II [3] and it is listed as a LINER galaxy by SIMBAD, meaning, a nucleus presenting an emission spectrum characterized by broad lines of weak ionized atoms. [5]
NGC 3754 is a member of the Copeland Septet which is made up of 7 galaxies discovered by Copeland in 1874. [6] The other members of the group, are NGC 3745, NGC 3746, NGC 3748, NGC 3750, NGC 3751 and NGC 3753. [7]
Halton Arp noticed the 7 galaxies in an article published in 1966. [8] This group is designated as Arp 320 in which PGC 36010 is part of them. [9]
The 7 galaxies were also observed by Paul Hickson, in which he included them inside his article in 1982. [10] This group is known as Hickson 57, in which NGC 3754 is designated as HCG 57D. [11]
NGC 5829 is a spiral galaxy located in the constellation Boötes. It is 281 million light-years away from Earth and was discovered by astronomer, Edouard Stephan in May 1882.
NGC 3718, also called Arp 214, is a galaxy located approximately 52 million light years from Earth in the constellation Ursa Major. It is either a lenticular or spiral galaxy.
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 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.
The Copeland Septet is a group of galaxies in the constellation Leo that includes NGC 3748, NGC 3754, NGC 3750, NGC 3751, NGC 3745, NGC 3753 and NGC 3746. The group was discovered by British astronomer Ralph Copeland in 1874. The location of Copeland's Septet is right ascension 11h 37m 50s / declination +21° 59′ (2000.0), about three degrees northwest of third magnitude star 93 Leonis.
NGC 5910 is an elliptical galaxy located about 540 million light-years away in the constellation Serpens. It was discovered by astronomer William Hershel on April 13, 1785. NGC 5910 is also a strong radio source with a conspicuous nuclear jet.
NGC 5278 is a spiral galaxy in the constellation Ursa Major. It was discovered by German-British astronomer William Herschel in 1789. NGC 5278 is in gravitational interaction with the galaxy NGC 5279. This pair of galaxies appears in the Halton Arp's Atlas of Peculiar Galaxies under the symbol Arp 239. The luminosity class of NGC 5278 is II. The nucleus of this galaxy presents a burst of star formation and it is an active Seyfert 2 type galaxy. In addition, NGC 5278 is possibly a LINER galaxy, a galaxy whose nucleus presents an emission spectrum characterized by broad lines of weakly ionized atoms. NGC 5278 is also a galaxy whose core shines in the ultraviolet spectrum. It is listed in the Markarian catalog under the reference Mrk 271.
NGC 5008 is a massive barred spiral galaxy located in the Boötes constellation.
NGC 3758 known as the Owl Galaxy, is a type Sb spiral galaxy in the constellation of Leo. It is located 447 million light-years from the Solar System and an approximate diameter of 70,000 light-years. NGC 3758 was discovered by Ralph Copeland on March 18, 1874, but also independently discovered by Edouard Stephan ten years later.
NGC 3746 is a large barred spiral galaxy with a ring structure located in the Leo constellation. It is located 449 million light-years from the Solar System and has an approximate diameter of 165,000 light-years. NGC 3746 was discovered by Ralph Copeland on 9 February 1874 with subsequent observations made by Hermann Kobold, Lawrence Parsons and John Louis Emil Dreyer.
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.
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.
NGC 3748 is a lenticular galaxy with a bar located in the Leo constellation. It is located 440 million light-years away from the Solar System and was discovered by Ralph Copeland on April 5, 1874, but also observed by Hermann Kobold, Lawrence Parsons and John Louis Emil Dreyer.
NGC 3745 is a lenticular galaxy with a bar structure located in the constellation of Leo. NGC 3745 is located 471 million light-years away from the Solar System and was discovered by Ralph Copeland on April 5, 1874, but also observed by Hermann Kobold, Lawrence Parsons and John Louis Emil Dreyer.
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.
IC 2759 is a small type E elliptical galaxy located in the constellation of Leo. It is located 350 million light-years away from the Solar System and was discovered on April 24, 1897, by Guillaume Bigourdan. Sometimes IC 2759 is confused with the spiral galaxy, PGC 34882 which is located south of the galaxy.
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.
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.
NGC 7609 or known as Arp 150 and HCG 95A, is a large elliptical galaxy located in Pegasus. Its speed relative to the cosmic microwave background is 11,879 km/s, which corresponds the galaxy to be located 554 million light-years away from Earth. NGC 7609 was discovered on October 5, 1864, by Albert Marth and included in Halton Arp's, Atlas of Peculiar Galaxies in galaxies that produces jets.
NGC 3187, also known as HGC 44D, is a large barred spiral galaxy located in the constellation Leo. Its velocity relative to the cosmic microwave background is 1,901 ± 22 km/s, which corresponds to a Hubble distance of 28.0 ± 2.0 Mpc. NGC 3187 was discovered by Irish physicist George Stoney in 1850.