NGC 4589

NGC 4589
NGC 4589 imaged by the Hubble Space Telescope
Observation data (J2000 epoch)
ConstellationDraco
Right ascension12h 37m 24.9875s
Declination+74° 11′ 30.903″
Redshift0.006617
Heliocentric radial velocity2,002 km/s
Galactocentric velocity2,154 km/s
Distance73.03 ± 0.46 Mly (22.39 ± 0.14 Mpc)
Apparent magnitude (V)10.73±0.15
Apparent magnitude (B)11.69±0.15
Absolute magnitude (V)−21.41±0.23
Characteristics
TypeE2
Apparent size (V)3.47′ × 2.75′
Other designations
IRAS F12353+7428, NGC 4589, UGC 7797, LEDA 42139

NGC 4589 is an elliptical galaxy located in the constellation of Draco. It was discovered by German-British astronomer William Herschel on November 22, 1797. This galaxy lies at a distance of 73.0 million light-years (22.39 Mpc) from the Milky Way, and is receding with a heliocentric radial velocity of 2,002 km/s. It is known by its designations PGC 42139 or UGC 7797.

The morphological classification of NGC 4589 is E2 in the De Vaucouleurs system, Indicating this is an elliptical galaxy with a ratio of 5:4 between the major and minor axes. It is a bright source of X-ray emission and is a LINER-type galaxy. There is a dusty disk that is aligned with the minor axis, which is likely the remnant of a merger with a gas-rich galaxy. NGC 4589 has a large population of globular clusters, estimated at 640±50. A small population of young star clusters with an age of less than a billion years are located in the central region.

The calcium-rich type Ib supernova SN 2005cz was discovered on July 28, 2005. The progenitor star may have formed near the young stellar clusters at the core of NGC 4589.

References

  1. 1 2 Myers, S. T.; et al. (2003). "The Cosmic Lens All-Sky Survey - I. Source selection and observations". Monthly Notices of the Royal Astronomical Society. 341 (1): 1–12. arXiv:astro-ph/0211073. Bibcode:2003MNRAS.341....1M. doi:10.1046/j.1365-8711.2003.06256.x. S2CID 18706420.
  2. ↑ Kochanek, C. S.; et al. (October 2001). "The K-Band Galaxy Luminosity Function". The Astrophysical Journal. 560 (2): 566–579. arXiv:astro-ph/0011456. Bibcode:2001ApJ...560..566K. doi:10.1086/322488. S2CID 119420446.
  3. 1 2 3 4 Tully, R. Brent; et al. (October 2013). "Cosmicflows-2: The Data". The Astronomical Journal. 146 (4): 25. arXiv:1307.7213. Bibcode:2013AJ....146...86T. doi:10.1088/0004-6256/146/4/86. S2CID 118494842. 86.
  4. 1 2 3 4 5 6 Lee, Myung Gyoon; et al. (January 2019). "Star Clusters in the Elliptical Galaxy NGC 4589 Hosting a Calcium-rich SN Ib (SN 2005cz)". The Astrophysical Journal. 871 (1). id. 33. arXiv:1812.01629. Bibcode:2019ApJ...871...33L. doi:10.3847/1538-4357/aaf72c.
  5. ↑ Paturel, G.; et al. (December 2003). "HYPERLEDA. I. Identification and designation of galaxies" (PDF). Astronomy and Astrophysics. 412: 45–55. Bibcode:2003A&A...412...45P. doi:10.1051/0004-6361:20031411.
  6. 1 2 "NGC 4589". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2021-01-14.
  7. ↑ "Compass and Scale Image of Galaxies NGC 2768 and NGC 4589". HubbleSite.org. HubbleSite. Retrieved 2020-08-07.
  8. ↑ Lee, M.; et al. (2018-12-04). "Star Clusters in the Elliptical Galaxy NGC 4589 Hosting a Calcium-rich SN Ib (SN 2005CZ)". Retrieved 2020-08-07.
  9. ↑ Kawabata, K. S.; et al. (2010-05-20). "A massive star origin for an unusual helium-rich supernova in an elliptical galaxy". Nature. 465 (7296): 326–328. arXiv:0906.2811. Bibcode:2010Natur.465..326K. doi:10.1038/nature09055. PMID 20485430. S2CID 205220629.
  10. ↑ Leonard, D. C. (August 2005). Green, D. W. E. (ed.). "Supernova 2005cz in NGC 4589". IAU Circular (8579): 2. Bibcode:2005IAUC.8579....2L.
  11. ↑ "SN 2005cz". Transient Name Server. IAU. Retrieved 14 August 2024.