NGC 3753
Galaxy in Copeland Septet
From Wikipedia, the free encyclopedia
NGC 3753 is a large barred spiral galaxy located in the Leo constellation.[1] It is located 435 million light-years away from the earth[2] and was discovered on February 9, 1874, by Ralph Copeland.[3]
| NGC 3753 | |
|---|---|
| |
| Observation data (J2000 epoch) | |
| Constellation | Leo |
| Right ascension | 11h 37m 53.90s |
| Declination | +21d 58m 53.0s |
| Redshift | 0.029064 |
| Heliocentric radial velocity | 8,713 km/s |
| Distance | 435 Mly (133.37 Mpc) |
| Group or cluster | Copeland Septet |
| Apparent magnitude (V) | 14.52 |
| Characteristics | |
| Type | Sb, LINER, SAb |
| Size | 258,000 ly |
| Other designations | |
| PGC 36016, UGC 6602, VV 282a, KUG 1135+222, MCG +04-28-010, SPRC 203, Copeland Septet NED06, HCG 057A, 2MASS J11375380+2158520, 2MASX J11375378+2158520, SDSS J113753.78+215851.8, WBL 343-005, NSA 139944, SSTL2 J113753.80+215852.4, LEDA 36016 | |
NGC 3753 is classified as a LINER galaxy, meaning it presents an emission spectrum characterized by broad lines of weak ionized atoms. It also has a luminosity class of I-II.[2] NGC 3753 is viewed edge-on. The edge-on view is the reason why we see a dust lane in NGC 3753.
Copeland Septet
NGC 3753 is a member of the Copeland Septet which consists of 7 galaxies discovered by Copeland in 1874.[4] The other members are NGC 3746, NGC 3745, NGC 3748, NGC 3750, NGC 3751 and NGC 3754.[5]
Halton Arp noticed the 7 galaxies in the group, in which he published the article in 1966.[6] The group is designated as Arp 320 along another galaxy, PGC 36010.[7]
This group was observed by Paul Hickson in which he included them in his article in 1982.[8] The group is known as Hickson 57 in which NGC 3753 is the dominant member.[9]