NGC 3821

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NGC 3821
SDSS NGC 3821.jpg
SDSS image of NGC 3821.
Observation data (J2000 epoch)
Constellation Leo
Right ascension 11h 42m 09.1s [1]
Declination 20° 18′ 56″ [1]
Redshift 0.019227 [1]
Helio radial velocity 5764 km/s [1]
Distance 271  Mly (83.1  Mpc) [1]
Group or cluster Leo Cluster
Apparent magnitude  (V)13.7 [1]
Characteristics
Type (R)SAB(s)ab [1]
Size~123,000  ly (37.7  kpc) (estimated) [1]
Apparent size  (V)1.4 x 1.3 [1]
Other designations
CGCG 127-32, MCG 4-28-30, PGC 36314, UGC 6663 [1]

NGC 3821 is a low surface brightness [2] spiral galaxy [3] and a ring galaxy [4] about 270 million light-years away [3] in the constellation Leo. [5] The galaxy was discovered by astronomer William Herschel on April 26, 1785 [6] and is a member of the Leo Cluster. [7]

Contents

See also

Related Research Articles

NGC 278 Spiral galaxy in the constellation Cassiopeia

NGC 278 is an isolated spiral galaxy in the northern circumpolar constellation of Cassiopeia, near the southern constellation boundary with Andromeda. It lies at a distance of approximately 39 megalight-years from the Milky Way, giving it a physical scale of 190 ly (58 pc) per arcsecond. The galaxy was discovered on December 11, 1786 by German-born astronomer William Herschel. J. L. E. Dreyer described it as, "considerably bright, pretty large, round, 2 stars of 10th magnitude near".

NGC 4639 Galaxy in the constellation Virgo

NGC 4639 is a barred spiral galaxy located in the equatorial constellation of Virgo. It was discovered by German-born astronomer William Herschel on April 12, 1784. John L. E. Dreyer described it as "pretty bright, small, extended, mottled but not resolved, 12th magnitude star 1 arcmin to southeast". This is a relatively nearby galaxy, lying approximately 72 million light-years away from the Milky Way. It is a companion to NGC 4654, and the two appear to have interacted roughly 500 million years ago. NGC 4639 is a member of the Virgo Cluster.

NGC 3862

NGC 3862 is an elliptical galaxy located 300 million light-years away in the constellation Leo. Discovered by astronomer William Herschel on April 27, 1785, NGC 3862 is an outlying member of the Leo Cluster.

NGC 4492 Spiral galaxy in the constellation Virgo

NGC 4492 is a spiral galaxy located about 90 million light-years away in the constellation Virgo. NGC 4492 was discovered by astronomer William Herschel on December 28, 1785. It was rediscovered by astronomer Arnold Schwassmann on January 23, 1900 and was listed as IC 3438. NGC 4492 lies in the direction of the Virgo Cluster. However, it is not considered to be a member of that cluster.

NGC 3860

NGC 3860 is a spiral galaxy located about 340 million light-years away in the constellation Leo. NGC 3860 was discovered by astronomer William Herschel on April 27, 1785. The galaxy is a member of the Leo Cluster and is a low-luminosity AGN (LLAGN). Gavazzi et al. however classified NGC 3860 as a strong AGN which may have been triggered by a supermassive black hole in the center of the galaxy.

NGC 3883

NGC 3883 is a large low surface brightness spiral galaxy located about 330 million light-years away in the constellation Leo. NGC 3883 has a prominent bulge but does not host an AGN. The galaxy also has flocculent spiral arms in its disk. It was discovered by astronomer William Herschel on April 13, 1785 and is a member of the Leo Cluster.

NGC 3884

NGC 3884 is a spiral galaxy located about 330 million light-years away in the constellation Leo. The galaxy was discovered by astronomer William Herschel on April 27, 1785 and is a member of the Leo Cluster.

NGC 3893

NGC 3893 is a spiral galaxy located in the constellation Ursa Major. It is located at a distance of circa 50 million light years from Earth, which, given its apparent dimensions, means that NGC 3893 is about 70,000 light years across. It was discovered by William Herschel on February 9, 1788. NGC 3893 interacts with its satellite, NGC 3896.

NGC 753 Galaxy in constellation Andromeda

NGC 753 is a spiral galaxy located 220 million light-years away in the constellation Andromeda. The galaxy was discovered by astronomer by Heinrich d'Arrest on September 16, 1865 and is a member of Abell 262.

NGC 759 Galaxy in constellation Andromeda

NGC 759 is an elliptical galaxy located 230 million light-years away in the constellation Andromeda. NGC 759 was discovered by astronomer by Heinrich d'Arrest on September 17, 1865. It is a member of Abell 262.

NGC 4076 Galaxy in the constellation Coma Berenices

NGC 4076 is a spiral galaxy located 290 million light-years away in the constellation Coma Berenices. The galaxy was discovered by astronomer William Herschel on April 27, 1785 and is a member of the NGC 4065 Group.

NGC 4065 Group

The NGC 4065 Group is a group of galaxies located about 330 Mly (100 Mpc) in the constellation Coma Berenices. The group's brightest member is NGC 4065 and located in the Coma Supercluster.

NGC 4294 Barred spiral galaxy in the constellation Virgo

NGC 4294 is a barred spiral galaxy with flocculent spiral arms located about 55 million light-years away in the constellation Virgo. The galaxy was discovered by astronomer William Herschel on March 15, 1784 and is a member of the Virgo Cluster.

NGC 4298 Galaxy in the constellation Coma Berenices

NGC 4298 is a flocculent spiral galaxy located about 53 million light-years away in the constellation Coma Berenices. The galaxy was discovered by astronomer William Herschel on April 8, 1784 and is a member of the Virgo Cluster.

NGC 4299 Galaxy in the constellation Virgo

NGC 4299 is a spiral galaxy located about 55 million light-years away in the constellation Virgo. It was discovered by astronomer William Herschel on March 15, 1784 and is a member of the Virgo Cluster.

NGC 4302

NGC 4302 is an edge-on spiral galaxy located about 55 million light-years away in the constellation Coma Berenices. It was discovered by astronomer William Herschel on April 8, 1784 and is a member of the Virgo Cluster.

NGC 4305 Galaxy in the constellation Virgo

NGC 4305 is a dwarf spiral galaxy located about 100 million light-years away in the constellation Virgo. The galaxy was discovered by astronomer John Herschel on May 2, 1829.

NGC 4306 Galaxy in the constellation Virgo

NGC 4306 is a dwarf barred lenticular galaxy located about 100 million light-years away in the constellation Virgo. The galaxy was discovered by astronomer Heinrich d'Arrest on April 16, 1865.

NGC 4307 Galaxy in the constellation Virgo

NGC 4307 is an edge-on spiral galaxy located about 65 million light-years away in the constellation Virgo. It was discovered by astronomer Christian Peters in 1881 and is a member of the Virgo Cluster. It is also a LINER galaxy.

NGC 4312 Galaxy in the constellation Coma Berenices

NGC 4312 is an edge-on unbarred spiral galaxy located about 55 million light-years away in the constellation Coma Berenices. It was discovered by astronomer William Herschel on January 14, 1787. NGC 4312 is a member of the Virgo Cluster and is a LINER galaxy.

References

  1. 1 2 3 4 5 6 7 8 9 10 "NASA/IPAC Extragalactic Database". Results for NGC 3821. Retrieved 2018-07-09.
  2. ↑ Honey, M; van Driel, W; Das, M; Martin, J-M (2018-03-03). "A study of the H i and optical properties of Low Surface Brightness galaxies: spirals, dwarfs, and irregulars". Monthly Notices of the Royal Astronomical Society. 476 (4): 4488–4500. arXiv: 1802.06408 . Bibcode:2018MNRAS.476.4488H. doi:10.1093/mnras/sty530. ISSN   0035-8711. S2CID   118843004.
  3. 1 2 "Your NED Search Results". ned.ipac.caltech.edu. Retrieved 2018-07-09.
  4. ↑ P., Kostyuk, I.; I., Kopylov, A. (June 1982). "Radial Velocities of Ring-Shaped Galaxies - Part Two". Soviet Astronomy Letters. 8: 280. Bibcode:1982SvAL....8..280K.
  5. ↑ "Revised NGC Data for NGC 3821". spider.seds.org. Retrieved 2018-07-09.
  6. ↑ "New General Catalog Objects: NGC 3800 - 3849". cseligman.com. Retrieved 2018-07-09.
  7. ↑ Deharveng, J.-M.; Boselli, A.; Donas, J. (October 2002). "The far-ultraviolet emission of early-type galaxies". Astronomy & Astrophysics. 393 (3): 843–854. arXiv: astro-ph/0208578 . Bibcode:2002A&A...393..843D. doi:10.1051/0004-6361:20021082. ISSN   0004-6361. S2CID   16016383.


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