NGC 4589

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NGC 4589
J2000 epoch)
ConstellationDraco
Right ascension12h 37m 24.9875s[1]
Declination+74° 11′ 30.903″[1]
Redshift0.006617[2]
Heliocentric radial velocity2,002 km/s[3]
Galactocentric velocity2,154 km/s[3]
Distance73.03 ± 0.46 Mly (22.39 ± 0.14 Mpc)[3]
Apparent magnitude (V)10.73±0.15[4]
Apparent magnitude (B)11.69±0.15[4]
Absolute magnitude (V)−21.41±0.23[4]
Characteristics
TypeE2[4]
Apparent size (V)3.47′ × 2.75′[5]
Other designations
IRAS F12353+7428, NGC 4589, UGC 7797, LEDA 42139[6]

NGC 4589 is an elliptical galaxy located in the Draco constellation.[7][8][9] 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.[3] It is known by its designations PGC 42139 or UGC 7797.[6]

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.[4]

The calcium-rich

type Ib supernova SN 2005cz was discovered on July 28, 2005.[10] The progenitor star may have formed near the young stellar clusters at the core of NGC 4589.[4]

Gallery

References

  1. ^
    S2CID 18706420
    .
  2. S2CID 119420446
    .
  3. ^
    S2CID 118494842
    . 86.
  4. ^
    doi:10.3847/1538-4357/aaf72c
    .
  5. doi:10.1051/0004-6361:20031411
    .
  6. ^ a b "NGC 4589". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2021-01-14.
  7. 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. S2CID 205220629
    .
  10. Bibcode:2005IAUC.8579....2L
    .

External links
Retrieved from "https://en.wikipedia.org/w/index.php?title=NGC_4589&oldid=1217740311"