NGC 1023

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NGC 1023
Hubble Space Telescope image of NGC 1023.jpg
Hubble Space Telescope image of NGC 1023
Observation data (J2000 epoch)
Constellation Perseus
Right ascension 02h 40m 24.0s [1]
Declination +39° 03′ 48″ [1]
Redshift 0.002125 [1]
Heliocentric radial velocity 637 ± 4 km/s [1]
Distance ~19 Mly (Light Travel-Time redshift-based) [1]
30 to 64 Mly (measured) [1]
Apparent magnitude  (V)10.35 [1]
Absolute magnitude  (V)−21.2 [2]
Characteristics
Type SB0 [1]
Apparent size  (V)8.7' x 3.0' [1]
Other designations
UGC 2154, PGC 10123, MCG+06-06-073, Arp 135

NGC 1023, also known as the Perseus Lenticular Galaxy, [3] is a barred lenticular galaxy, a member of the NGC 1023 group of galaxies in the Local Supercluster. Distance measurements vary from 9.3 to 19.7 million parsecs (30 to 64 million light-years). [1] The supermassive black hole at the core has a mass of (4.4±0.5)×107  M☉ . [4] The black hole was discovered by analyzing the dynamics of the galaxy. [5]

NGC 1023 is included in Halton Arp's Atlas of Peculiar Galaxies, under the category "Galaxies with Nearby Fragments" under the number 135. [6]

NGC 1023 has been estimated to have about 490 globular clusters, consistent with similar early-type galaxies. [2] A number of small galaxies have been found around NGC 1023, the collection of which is labelled the "NGC 1023 Group." [7] NGC 1023 has a satellite galaxy named NGC 1023A, which is a Magellanic spiral galaxy; its globular cluster system is much smaller, estimated to be around six individuals. [2]

Related Research Articles

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<span class="mw-page-title-main">Sombrero Galaxy</span> Galaxy in the constellation Virgo

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<span class="mw-page-title-main">NGC 1316</span> Lenticular radio galaxy in the constellation Fornax

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<span class="mw-page-title-main">NGC 3226</span> Dwarf elliptical galaxy in the constellation Leo

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<span class="mw-page-title-main">NGC 4526</span> Lenticular galaxy in the constellation Virgo

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<span class="mw-page-title-main">NGC 7314</span> Galaxy in the constellation Piscis Austrinus

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<span class="mw-page-title-main">NGC 6166</span> Galaxy in the constellation Hercules

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<span class="mw-page-title-main">NGC 7727</span> Peculiar galaxy in the constellation Aquarius

NGC 7727 is a peculiar galaxy in the constellation Aquarius. It harbors two galactic nuclei, each containing a supermassive black hole, separated 1,600 light years apart.

<span class="mw-page-title-main">NGC 4473</span> Galaxy in the constellation Coma Berenices

NGC 4473 is an elliptical galaxy located about 50 million light-years away in the constellation of Coma Berenices. It was discovered by astronomer William Herschel on April 8, 1784. NGC 4473 has an inclination of about 71°. NGC 4473 is a member of a chain of galaxies called Markarian's Chain which is part of the larger Virgo Cluster of galaxies.

<span class="mw-page-title-main">NGC 4564</span> Elliptical galaxy in the constellation Virgo

NGC 4564 is an elliptical galaxy located about 57 million light-years away in the constellation Virgo. NGC 4564 was discovered by astronomer William Herschel on March 15, 1784. The galaxy is also a member of the Virgo Cluster.

<span class="mw-page-title-main">NGC 4596</span> Galaxy in the constellation Virgo

NGC 4596 is a barred lenticular galaxy located about 55 million light-years away in the constellation Virgo. NGC 4596 was discovered by astronomer William Herschel on March 15, 1784. NGC 4596 is a member of the Virgo Cluster and has an inclination of about 38°.

<span class="mw-page-title-main">NGC 708</span> Galaxy in the constellation Andromeda

NGC 708 is an elliptical galaxy located 240 million light-years away in the constellation Andromeda and was discovered by astronomer William Herschel on September 21, 1786. It is classified as a cD galaxy and is the brightest member of Abell 262. NGC 708 is a weak FR I radio galaxy and is also classified as a type 2 Seyfert galaxy.

<span class="mw-page-title-main">NGC 541</span> Galaxy in the constellation Cetus

NGC 541 is a lenticular galaxy located in the constellation Cetus. It is located at a distance of about 230 million light years from Earth, which, given its apparent dimensions, means that NGC 541 is about 130,000 light years across. It was discovered by Heinrich d'Arrest on October 30, 1864. It is a member of the Abell 194 galaxy cluster and is included in the Atlas of Peculiar Galaxies in the category galaxies with nearby fragments. NGC 541 is a radio galaxy of Fanaroff–Riley class I, also known as 3C 40A.

<span class="mw-page-title-main">NGC 5982</span> Galaxy in the constellation Draco

NGC 5982 is an elliptical galaxy located in the constellation Draco. It is located at a distance of circa 130 million light years from Earth, which, given its apparent dimensions, means that NGC 5982 is about 100,000 light years across. It was discovered by William Herschel on May 25, 1788.

<span class="mw-page-title-main">NGC 3585</span> Galaxy in the constellation Hydra

NGC 3585 is an elliptical or a lenticular galaxy located in the constellation Hydra. It is located at a distance of circa 60 million light-years from Earth, which, given its apparent dimensions, means that NGC 3585 is about 80,000 light years across. It was discovered by William Herschel on December 9, 1784.

<span class="mw-page-title-main">NGC 545</span> Galaxy in the constellation Cetus

NGC 545 is a lenticular galaxy located in the constellation Cetus. It is located at a distance of about 250 million light years from Earth, which, given its apparent dimensions, means that NGC 545 is about 180,000 light years across. It was discovered by William Herschel on October 1, 1785. It is a member of the Abell 194 galaxy cluster and is included along with NGC 547 in the Atlas of Peculiar Galaxies.

<span class="mw-page-title-main">NGC 4318</span> Galaxy in the constellation Virgo

NGC 4318 is a small lenticular galaxy located about 72 million light-years away in the constellation Virgo. It was discovered by astronomer John Herschel on January 18, 1828. NGC 4318 is a member of the Virgo W′ group, a group of galaxies in the background of the Virgo Cluster that is centered on the giant elliptical galaxy NGC 4365.

References

  1. 1 2 3 4 5 6 7 8 9 10 "NASA/IPAC Extragalactic Database". Results for NGC 1023. Retrieved 2012-10-17.
  2. 1 2 3 Young, Michael D.; Dowell, Jessica L.; Rhode, Katherine L. (2012). "Globular Cluster Systems of Spiral and S0 Galaxies: Results from WIYN Imaging of NGC 1023, NGC 1055, NGC 7332, and NGC 7339". The Astronomical Journal. 144 (4): 103. arXiv: 1210.4476 . Bibcode:2012AJ....144..103Y. doi:10.1088/0004-6256/144/4/103. S2CID   62792507.
  3. ↑ Stoyan, Ronald; Schurig, Stephan (2014). interstellarum Deep Sky Atlas. Erlangen: Cambridge University Press; Oculum-Verlag GmbH. ISBN   978-1-107-50338-0. OCLC   920437579.
  4. ↑ Graham, Alister W. (November 2008), "Populating the Galaxy Velocity Dispersion - Supermassive Black Hole Mass Diagram: A Catalogue of (Mbh, σ) Values", Publications of the Astronomical Society of Australia, 25 (4): 167–175, arXiv: 0807.2549 , Bibcode:2008PASA...25..167G, doi:10.1071/AS08013, S2CID   89905.
  5. ↑ Bower, G. A.; Green, R. F.; Bender, R.; Gebhardt, K.; Lauer, T. R.; Magorrian, J.; Richstone, D. O.; Danks, A.; Gull, T.; Hutchings, J.; Joseph, C. (2001-03-20). "Evidence of a Supermassive Black Hole in the Galaxy NGC 1023 from the Nuclear Stellar Dynamics". The Astrophysical Journal. 550 (1): 75–86. arXiv: astro-ph/0011204 . Bibcode:2001ApJ...550...75B. doi:10.1086/319730. ISSN   0004-637X. S2CID   118949563.
  6. ↑ Arp, Halton (1966). Atlas of Peculiar Galaxies. Pasadena, California: California Institute of Technology . Retrieved 5 Jan 2010. (webpage includes PDF link)
  7. ↑ Tully, R. B. (1980). "Nearby groups of galaxies. I. The NGC 1023 group". Astrophysical Journal. 237: 390–403. Bibcode:1980ApJ...237..390T. doi:10.1086/157881.


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