NGC 3750

NGC 3750 is a lenticular galaxy with a bar^[1] located in the constellation of Leo.^[2][3] It is located 450 million light-years from the Solar System^[4] and was discovered by Ralph Copeland on February 9, 1874.^[5]

NGC 3750
NGC 3750 is located left of the image below NGC 3753 and NGC 3754 which was taken by Mount Lemmon Observatory
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]

References

1. "HyperLeda -object description". atlas.obs-hp.fr. Retrieved 2024-05-02.
2. Astronomy, Go. "NGC 3750 | galaxy in Leo | NGC List | GO ASTRONOMY". Go-Astronomy.com. Retrieved 2024-05-02.
3. "NGC 3750". spider.seds.org. Retrieved 2024-05-02.
4. "Your NED Search Results". ned.ipac.caltech.edu. Retrieved 2024-05-02.
5. "New General Catalog Objects: NGC 3750 - 3799". cseligman.com. Retrieved 2024-05-02.
6. "NGC 3750 - LINER-type Active Galaxy Nucleus". simbad.u-strasbg.fr. Retrieved 2024-05-02.
7. Bakich, Michael E. (2024-01-01). "Copeland's Septet". Astronomy Magazine. Retrieved 2024-05-02.
8. "Copeland's Septet (Hickson Compact Group 57) – Constellation Guide". www.constellation-guide.com. Retrieved 2024-05-02.
9. "NED Search Results for ARP 320". ned.ipac.caltech.edu. Retrieved 2024-05-02.
10. "Copeland's Septet (Arp 320) - Astronomy Magazine - Interactive Star Charts, Planets, Meteors, Comets, Telescopes". cs.astronomy.com. Retrieved 2024-05-02.
11. Hickson, P. (1982-04-01). "Systematic properties of compact groups of galaxies". The Astrophysical Journal. 255: 382–391. Bibcode:1982ApJ...255..382H. doi:10.1086/159838. ISSN 0004-637X.
12. "Data from Revised NGC and IC catalogue by Wolfgang Steinicke - NGC 3700 to 3799". astrovalleyfield.ca. Retrieved 2024-05-02.