Wikipedia

NGC 759

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]

NGC 759
2MASS image of NGC 759.
Observation data (J2000 epoch)
ConstellationAndromeda
Right ascension01h 57m 50.3s[1]
Declination36° 20′ 35″[1]
Redshift0.015567[1]
Heliocentric radial velocity4667 km/s[1]
Distance230 Mly (70.4 Mpc)[1]
Group or clusterAbell 262
Apparent magnitude (V)13.3[1]
Characteristics
TypeE[1]
Size~110,000 ly (33 kpc) (estimated)[1]
Apparent size (V)1.6 × 1.4[1]
Other designations
MCG 6-5-67, PGC 7397, UGC 1440[1]

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.[12][13]

Dust disk

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The central region of NGC 759 harbors a face-on dust disk with tightly wound spiral structure. The disk has a diameter of 11,000 ly (3.4 kpc).[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[15][16][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.[17] 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.[16]

 
The dust disk in NGC 759 as imaged by the Hubble Space Telescope

Molecular gas

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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 4,200 ly (1.3 kpc).[15] The gas may be the result of the same merger event that produced the circumnuclear molecular gas ring and the main disk.[16][15][17]

SN 2002fb

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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

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References

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  1. ^ a b c d e f g h i j "NASA/IPAC Extragalactic Database". Results for NGC 759. Retrieved 2019-01-06.
  2. ^ "Your NED Search Results". ned.ipac.caltech.edu. Retrieved 2019-01-08.
  3. ^ "New General Catalog Objects: NGC 750 – 799". cseligman.com. Retrieved 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. arXiv:astro-ph/0001140. Bibcode:2000ApJ...543..178G. doi:10.1086/317070. ISSN 0004-637X. S2CID 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. Bibcode:1993A&AS..100...47G. ISSN 0365-0138.
  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. Bibcode:1992A&AS...93..211F. ISSN 0365-0138.
  7. ^ "NGC 759". simbad. Retrieved 2019-01-08.
  8. ^ "Detailed Object Classifications". ned.ipac.caltech.edu. Retrieved 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. Bibcode:1988A&AS...73..173R. ISSN 0365-0138.
  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. Bibcode:1989AJ.....98...64Z. doi:10.1086/115128. ISSN 0004-6256.
  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. arXiv:astro-ph/0101114. Bibcode:2001ApJS..134..355M. doi:10.1086/320857. ISSN 0067-0049. S2CID 119052072.
  12. ^ a b Feretti, L.; Giovannini, G. (1994-01-01). "Structures of small-size radio galaxies in clusters". Astronomy and Astrophysics. 281: 375–387. Bibcode:1994A&A...281..375F. ISSN 0004-6361.
  13. ^ a b 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. Bibcode:2003ApJ...594..232V. doi:10.1086/376775. ISSN 0004-637X.
  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. 144 (3): 78. arXiv:1206.5768. Bibcode:2012AJ....144...78W. doi:10.1088/0004-6256/144/3/78. ISSN 1538-3881. S2CID 118679035.
  15. ^ a b c d 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. arXiv:astro-ph/9702080. Bibcode:1997A&A...323..727W. ISSN 0004-6361.
  16. ^ a b c d 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. Bibcode:2000A&A...354...28V. ISSN 0004-6361.
  17. ^ a b c 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. 677 (1): 249. arXiv:0801.0591. Bibcode:2008ApJ...677..249L. doi:10.1086/528838. ISSN 0004-637X. S2CID 14316328.
  18. ^ "List of supernovae sorted by host name". Bright Supernova – Archives. Retrieved 2019-01-03.
  19. ^ "Bright Supernovae – 2002". rochesterastronomy.org. Retrieved 2019-01-11.
  20. ^ "2002fb – The Open Supernova Catalog". Archived from the original on 2016-09-17. Retrieved 2019-01-11.
  21. ^ "SN 2002fb | Transient Name Server". wis-tns.weizmann.ac.il. Retrieved 2019-01-11.
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