NGC 3750
Galaxy in the Copeland Septet
From Wikipedia, the free encyclopedia
NGC 3750 is a barred lenticular galaxy[1] located in the constellation of Leo.[2][3] It is located 450 million light years away from Earth.[4] and was discovered by Ralph Copeland on February 9, 1874.[5]
| NGC 3750 | |
|---|---|
NGC 3750 with NGC 3753 beneath it | |
| Observation data (J2000 epoch) | |
| Constellation | Leo |
| Right ascension | 11h 37m 51.637s |
| Declination | +21d 58m 27.26s |
| Redshift | 0.030258 |
| Heliocentric radial velocity | 9,071 km/s |
| Distance | 450 Mly (138 Mpc) |
| Group or cluster | Copeland Septet |
| Apparent magnitude (V) | 13.9 |
| Surface brightness | 23.7 mag/arcsec |
| Characteristics | |
| Type | SAB0?, E-S0 |
| Size | 156,000 ly |
| Other designations | |
| PGC 36011, CGCG 127-009, VV 282c, MCG +04-28-008, Copeland Septet NED04, HCG 057C, 2MASS J11375165+2158272, SDSS J113751.63+215827.2, NSA 112843, 2XMM J113751.7+215827, LEDA 36011 | |
NGC 3750 has a surface brightness of magnitude 23.7[2] and is classified a LINER galaxy by SIMBAD, meaning it has a nucleus, presenting an emission spectrum characterized by broad lines of weakly ionized atoms.[6]
Copeland Septet
NGC 3750 is a member of the Copeland Septet which is made up of 7 seven galaxies discovered by Copeland.[7] The other members are NGC 3745, NGC 3746, NGC 3748, NGC 3751, NGC 3753 and NGC 3754.[8]
Halton Arp noticed the galaxies in the group, whom he published in his article in 1966.[9] This group is designated as Arp 320 along with another galaxy, PGC 36010.[10]
This group was also observed by Paul Hickson whom he included in his article in 1982.[11] The group is known as Hickson 57, in which NGC 3750 is designated is HCG 57C.[12]