NGC 7713 | |
---|---|
Observation data (J2000 epoch) | |
Constellation | Sculptor |
Right ascension | 23h 36m 15s |
Declination | −37° 56’ 17” |
Apparent magnitude (B) | 11.63 |
Surface brightness | 22.97 mag/arcsec2 |
Characteristics | |
Type | SAcd |
Other designations | |
NGC 7713 • PGC 71866 • ESO 347-028 • MCG -06-51-013 • 2MASX J23361515-3756221 • SGC 233335-3813.0 • AM 2333-381 • GC 4992 • h 4000 |
NGC 7713 is a barred spiral galaxy with extensive Hubble-type SBcd star-forming regions that is located in the constellation Sculptor in the southern sky. It is estimated to be 31 million light-years from the Milky Way and about 40,000 light-years in diameter. [1] [2] [3] It was discovered by John Herschel on October 4, 1836. [4]
One supernova has been observed in NGC 7713: SN 1982L (type II, mag. 16) was discovered by Marina Wischnjewsky on 21 July 1982. [5] [6]
NGC 7331, also known as Caldwell 30, is an unbarred spiral galaxy about 40 million light-years (12 Mpc) away in the constellation Pegasus. It was discovered by William Herschel in 1784. NGC 7331 is the brightest galaxy in the field of a visual grouping known as the NGC 7331 Group of galaxies. In fact, the other members of the group, NGC 7335, NGC 7336, NGC 7337 and NGC 7340, lie far in the background at distances of approximately 300–350 million light years.
NGC 1532, also known as Haley's Coronet, is an edge-on barred spiral galaxy located approximately 50 million light-years from the Solar System in the constellation Eridanus. The galaxy was discovered by James Dunlop on 29 October 1826.
NGC 6118 is a grand design spiral galaxy located 83 million light-years away in the constellation Serpens. It was discovered on 14 April 1785 by German-British astronomer William Herschel.
Arp 271 is a pair of similarly sized interacting spiral galaxies, NGC 5426 and NGC 5427, in the constellation of Virgo. It is not certain whether the galaxies are going to eventually collide or not. They will continue interacting for tens of millions of years, creating new stars as a result of the mutual gravitational attraction between the galaxies, a pull seen in the bridge of stars already connecting the two. Located about 130 million light-years away, the Arp 271 pair is about 130,000 light-years across. It was originally discovered in 1785 by William Herschel. It is speculated, that the Milky Way will undergo a similar collision in about five billion years with the neighbouring Andromeda Galaxy, which is currently located about 2.6 million light-years away.
NGC 3938 is an unbarred spiral galaxy in the Ursa Major constellation. It was discovered on 6 February 1788 by William Herschel. It is one of the brightest spiral galaxies in the Ursa Major South galaxy group and is roughly 67,000 light years in diameter. It is approximately 43 million light years away from Earth. NGC 3938 is classified as type Sc under the Hubble sequence, a loosely wound spiral galaxy with a smaller and dimmer bulge. The spiral arms of the galaxy contain many areas of ionized atomic hydrogen gas, more so towards the center.
NGC 6850 is a barred lenticular galaxy in the constellation Telescopium, discovered by John Herschel on 9 June 1836.
NGC 6984 is a barred spiral galaxy located 180 million light years away in the constellation Indus. It is a Type II Seyfert galaxy, a type of Active galactic nucleus (AGN). It is situated south of the celestial equator, and is visible with the help of a telescope having an aperture of 10 inches or more. It was discovered on 8 July 1834 by British astronomer John Herschel.
NGC 2441 is a barred spiral galaxy located in the northern constellation of Camelopardalis. Its velocity with respect to the cosmic microwave background is 3492 ± 2 km/s, which corresponds to a Hubble distance of 168.0 ± 11.8 Mly (51.51 ± 3.61 Mpc). In addition, 16 non-redshift measurements give a distance of 176.16 ± 16.80 Mly (54.012 ± 5.151 Mpc). The galaxy was discovered by German astronomer Wilhelm Tempel on 8 August 1882.
NGC 105 is a spiral galaxy estimated to be about 240 million light-years away in the constellation of Pisces. It was discovered by Édouard Stephan in 1884 and its apparent magnitude is 14.1.
NGC 7033 is a lenticular galaxy located about 390 million light-years away in the constellation of Pegasus. It is part of a pair of galaxies that contains the nearby galaxy NGC 7034. NGC 7033 was discovered by astronomer Albert Marth on September 17, 1863.
NGC 7038 is an intermediate spiral galaxy located about 210 million light-years away in the constellation of Indus. Astronomer John Herschel discovered NGC 7038 on September 30, 1834.
NGC 7083 is an unbarred spiral galaxy located about 134 million light-years away in the constellation of Indus. It is also classified as a flocculent spiral galaxy. NGC 7083 was discovered by astronomer James Dunlop on August 28, 1826.
NGC 521, also occasionally referred to as PGC 5190 or UGC 962, is a barred spiral galaxy located approximately 224 million light-years from the Solar System in the constellation Cetus. It was discovered on 8 October 1785 by astronomer William Herschel.
NGC 3923 is an elliptical galaxy located in the constellation Hydra. It is located at a distance of about 90 million light years from Earth, which, given its apparent dimensions, means that NGC 3923 is about 155,000 light years across. NGC 3923 is an example of a shell galaxy where the stars in its halo are arranged in layers. It has more than twenty shells. It was discovered by William Herschel on March 7, 1791.
NGC 3841 is an elliptical or lenticular galaxy located about 300 million light-years away in the constellation Leo. It was discovered by astronomer John Herschel on March 25, 1827 is a member of the Leo Cluster.
NGC 1332 is an almost edge-on elliptical galaxy located in constellation of Eridanus. Situated about 70 million light years away, it is a member of the Eridanus cluster of galaxies, a cluster of about 200 galaxies. It is also the brightest member of the NGC 1332 Group. It was discovered by William Herschel on 9 December 1784.
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 3978 is a large intermediate spiral galaxy with a bar located in the constellation of Ursa Major. It is located 460 million light-years away from the Solar System and was discovered by William Herschel on March 19, 1790, but also observed by John Herschel on April 14, 1831.
NGC 3177 is a spiral galaxy located in the constellation Leo. Its speed relative to the cosmic microwave background is 1,627 ± 22 km/s, which corresponds to a Hubble distance of 24.0 ± 1.7 Mpc. NGC 3177 was discovered by the German-British astronomer William Herschel in 1784.
NGC 6646 is a spiral galaxy located in the constellation Lyra. Its velocity relative to the cosmic microwave background is 5,641 ± 35 km/s, which corresponds to a Hubble distance of 83.2 ± 5.9 Mpc. NGC 6646 was discovered by the German-British astronomer William Herschel on 26 June 1802. The luminosity class of NGC 6646 is I.