NGC 759 explained

NGC 759
Upright:1.15
Constellation Name:Andromeda
Epoch:J2000
Type:E[1]
Dist Ly:70.4Mpc
Z:0.015567
H Radial V:4667 km/s
Group Cluster:Abell 262
Appmag V:13.3
Size V:1.6 × 1.4
Size:~33kpc (estimated)
Names:MCG 6-5-67, PGC 7397, UGC 1440

NGC 759 is an elliptical galaxy located 230 million light-years away[2] in the constellation Andromeda. NGC 759 was discovered by astronomer by Heinrich d'Arrest on September 17, 1865.[3] It is a member of Abell 262.[4] [5] [6] [7] [8]

Despite being classified as a radio galaxy,[9] [10] [11] [12] [13] the radio emission in NGC 759 could be due to star formation rather than an active galactic nucleus.

Dust disk

The central region of NGC 759 harbors a face-on dust disk with tightly wound spiral structure. The disk has a diameter of 3.4kpc.[14] The dust disk also contains a smaller circumnuclear molecular gas ring that has star formation in H II regions.[15] [16] These features may be the result of a merger of gas-rich disk galaxies[17] or by the accretion of gas-rich material. In either scenario, the gas would have lost momentum and fallen to the center of the galaxy to produce the disk and current star formation. However, Vlasyuk et al. suggests that the disk and the smaller circumnuclear molecular gas ring with star formation inside the main disk formed from a tidal encounter between NGC 759 and a large spiral galaxy which was accompanied by a substantial gas accretion.

Molecular gas

NGC 759 contains 2.4 × 109 M☉ of molecular gas. Most of the gas is concentrated in a circumnuclear molecular gas ring with a diameter of 1.3kpc. The gas may be the result of the same merger event that produced the circumnuclear molecular gas ring and the main disk.

SN 2002fb

NGC 759 has had one supernova,[18] SN 2002fb which was discovered on September 6, 2002. It was classified as a type Ia supernova.[19] [20] [21]

See also

Notes and References

  1. Web site: NASA/IPAC Extragalactic Database . Results for NGC 759 . 2019-01-06.
  2. Web site: Your NED Search Results. ned.ipac.caltech.edu. 2019-01-08.
  3. Web site: New General Catalog Objects: NGC 750 – 799. cseligman.com. 2019-01-03.
  4. Giuricin. G.. Marinoni. C.. Ceriani. L.. Pisani. A.. November 2000. Nearby Optical Galaxies: Selection of the Sample and Identification of Groups. The Astrophysical Journal. 543. 1. 178–194. 10.1086/317070. 0004-637X. astro-ph/0001140. 2000ApJ...543..178G. 9618325.
  5. Garcia. A. M.. 1993-07-01. General study of group membership. II – Determination of nearby groups. Astronomy and Astrophysics Supplement Series. 100. 47–90. 0365-0138. 1993A&AS..100...47G.
  6. Fouque. P.. Gourgoulhon. E.. Chamaraux. P.. Paturel. G.. 1992-05-01. Groups of galaxies within 80 Mpc. II – The catalogue of groups and group members. Astronomy and Astrophysics Supplement Series. 93. 211–233. 0365-0138. 1992A&AS...93..211F.
  7. Web site: NGC 759. simbad. 2019-01-08.
  8. Web site: Detailed Object Classifications. ned.ipac.caltech.edu. 2019-01-08.
  9. Righetti. G.. Giovannini. G.. Feretti. L.. 1988-04-01. WSRT observations at 327 MHz of the cluster A262. Astronomy and Astrophysics Supplement Series. 73. 173–179. 0365-0138. 1988A&AS...73..173R.
  10. Zhao. Jun-Hui. Burns. Jack O.. Owen. Frazer N.. 1989-07-01. A 20 CM VLA survey of Abell clusters of galaxies. I – Distance class of not greater than 3 clusters. The Astronomical Journal. 98. 64–107. 10.1086/115128. 0004-6256. 1989AJ.....98...64Z. free.
  11. Miller. Neal A.. Owen. Frazer N.. 2001-06-01. The Radio Galaxy Populations of Nearby Northern Abell Clusters. The Astrophysical Journal Supplement Series. 134. 2. 355–383. 10.1086/320857. 0067-0049. 2001ApJS..134..355M. astro-ph/0101114. 119052072.
  12. Feretti. L.. Giovannini. G.. 1994-01-01. Structures of small-size radio galaxies in clusters. Astronomy and Astrophysics. 281. 375–387. 0004-6361. 1994A&A...281..375F.
  13. Vila-Vilaró. B.. Cepa. J.. Butner. H. M.. 2003-09-01. CO (3–2) Observations of Early-Type Galaxies with the Heinrich Hertz Telescope. The Astrophysical Journal. 594. 1. 232–246. 10.1086/376775. 0004-637X. 2003ApJ...594..232V. free.
  14. Wegner. G. A.. Corsini. E. M.. Thomas. J.. Saglia. R. P.. Bender. R.. Pu. S. B.. 2012. Further Evidence for Large Central Mass-to-light Ratios in Early-type Galaxies: The Case of Ellipticals and Lenticulars in the A262 Cluster. The Astronomical Journal. en. 144. 3. 78. 10.1088/0004-6256/144/3/78. 1538-3881. 2012AJ....144...78W. 1206.5768. 118679035.
  15. Wiklind. T.. Combes. F.. Henkel. C.. Wyrowski. F.. 1997-07-01. Molecular gas in the elliptical galaxy NGC 759. Interferometric CO observations.. Astronomy and Astrophysics. 323. 727–738. 0004-6361. 1997A&A...323..727W. astro-ph/9702080.
  16. Vlasyuk. V. V.. Sil'chenko. O. K.. 2000-02-01. NGC 759: A giant elliptical with a just-forming decoupled nucleus. Astronomy and Astrophysics. 354. 28–34. 0004-6361. 2000A&A...354...28V.
  17. Leeuw. Lerothodi L.. Davidson. Jacqueline. Dowell. C. Darren. Matthews. Henry E.. 2008. Spatially Resolved Imaging at 350 μm of Cold Dust in Nearby Elliptical Galaxies. The Astrophysical Journal. en. 677. 1. 249. 10.1086/528838. 0004-637X. 2008ApJ...677..249L. 0801.0591. 14316328.
  18. Web site: List of supernovae sorted by host name. Bright Supernova – Archives. 2019-01-03.
  19. Web site: Bright Supernovae – 2002.. rochesterastronomy.org. 2019-01-11.
  20. Web site: 2002fb – The Open Supernova Catalog. en-US. 2019-01-11. 2016-09-17. https://web.archive.org/web/20160917005846/https://sne.space/event/. dead.
  21. Web site: SN 2002fb Transient Name Server. wis-tns.weizmann.ac.il. 2019-01-11.

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