NGC 3750 is a barred

lenticular galaxy A lenticular galaxy (denoted S0) is a Galaxy morphological classification, type of galaxy intermediate between an elliptical galaxy, elliptical (denoted E) and a spiral galaxy in galaxy morphological classification schemes. It contains a large-s ...

located in the constellation of

Leo Leo is the Latin word for lion. It most often refers to: * Leo (constellation), a constellation of stars in the night sky * Leo (astrology), an astrological sign of the zodiac * Leo (given name), a given name in several languages, usually mas ...

. It is located 450 million

light years A light-year, alternatively spelled light year (ly or lyr), is a unit of length used to express astronomical distances and is equal to exactly , which is approximately 9.46 trillion km or 5.88 trillion mi. As defined by the International Astro ...

away from Earth. and was discovered by

Ralph Copeland Ralph Copeland FRSE FRAS (3 September 1837 – 27 October 1905) was an English astronomer and the third Astronomer Royal for Scotland. Life Copeland was born at Moorside Farm, near Woodplumpton in Lancashire, England the son of Robert Cope ...

on February 9, 1874. NGC 3750 has a

surface brightness In astronomy, surface brightness (SB) quantifies the apparent brightness or flux density per unit angular area of a spatially extended object such as a galaxy or nebula, or of the night sky background. An object's surface brightness depends on ...

magnitude Magnitude may refer to: Mathematics *Euclidean vector, a quantity defined by both its magnitude and its direction *Magnitude (mathematics), the relative size of an object *Norm (mathematics), a term for the size or length of a vector *Order of ...

23.7 and is classified a

LINER Liner or LINER may refer to: Line drawing * Eye liner, a type of makeup * Marker pen, a porous-tip pen with its own ink source * Multiple lining tool used in engraving * A sable brush used by coach painters Linings * Acoustic liner, a no ...

galaxy by

SIMBAD SIMBAD (the Set of Identifications, Measurements and Bibliography for Astronomical Data) is an astronomy, astronomical database of objects beyond the Solar System. It is maintained by the Centre de données astronomiques de Strasbourg (CDS), Fr ...

, meaning it has a nucleus, presenting an

emission spectrum The emission spectrum of a chemical element or chemical compound is the Spectrum (physical sciences), spectrum of frequencies of electromagnetic radiation emitted due to electrons making a atomic electron transition, transition from a high energ ...

characterized by broad lines of weakly ionized

atom Atoms are the basic particles of the chemical elements. An atom consists of a atomic nucleus, nucleus of protons and generally neutrons, surrounded by an electromagnetically bound swarm of electrons. The chemical elements are distinguished fr ...

Copeland Septet

NGC 3750 is a member of the

Copeland Septet The Copeland Septet (also Copeland's Septet, Hickson Compact Group 57) 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 Brit ...

which is made up of 7 seven galaxies discovered by Copeland. The other members are NGC 3745, NGC 3746, NGC 3748, NGC 3751, NGC 3753 and NGC 3754.

Halton Arp Halton Christian "Chip" Arp (March 21, 1927 – December 28, 2013) was an American astronomer. He is remembered for his 1966 book ''Atlas of Peculiar Galaxies'', which catalogued unusual-looking galaxies and presented their images. Arp was als ...

noticed the

galaxies A galaxy is a system of stars, stellar remnants, interstellar gas, dust, and dark matter bound together by gravity. The word is derived from the Greek ' (), literally 'milky', a reference to the Milky Way galaxy that contains the Solar Sys ...

in the group, whom he published in his article in 1966. This group is designated as Arp 320 along with another galaxy, PGC 36010. This group was also observed by Paul Hickson whom he included in his article in 1982. The group is known as Hickson 57, in which NGC 3750 is designated is HCG 57C.{{Cite web , title=Data from Revised NGC and IC catalogue by Wolfgang Steinicke - NGC 3700 to 3799 , url=http://astrovalleyfield.ca/AstronomieCompl/NGC%20et%20autres/WolfgangS/N3700_exc_web.htm , access-date=2024-05-02 , website=astrovalleyfield.ca

References

3750 036011 Leo (constellation) Lenticular galaxies Discoveries by Ralph Copeland Astronomical objects discovered in 1874 036011

320 __NOTOC__ Year 320 ( CCCXX) was a leap year starting on Friday of the Julian calendar. At the time, it was known as the Year of the Consulship of Constantinus and Constantinus (or, less frequently, year 1073 ''Ab urbe condita''). The denomin ...

Hickson Compact Groups 2MASS objects SDSS objects +04-28-008 Copeland Septet