NGC 7184

Source: Wikipedia, the free encyclopedia.
99.3 ± 22.5 Mly (30.5 ± 6.9 Mpc)[1]
Apparent magnitude (V)11.1
Characteristics
TypeSB(r)c [1]
Apparent size (V)6.0′ × 1.5′[1]
Other designations
UGCA 425, ESO 601- G009, MCG -04-52-009, PGC 67904[1]

NGC 7184 is a

light years from Earth, which, given its apparent dimensions, means that NGC 7184 is about 175,000 light years across. It was discovered by William Herschel on October 28, 1783.[2]

Characteristics

NGC 7184 has a small, bright nucleus and an elliptical

HII regions, and as they emerge from the ring are flocculent, based on the HII distribution, while they begin to split again at the outermost part of the galaxy.[5] Dust lanes are observed in the inner part of the disk.[6]

An outlying HII region has been discovered near NGC 7184. It is located on the major axis of the optical disk, on the northeasterly receding edge. Its size is estimated to be 270 pc at the distance of the galaxy and its

Hα luminosity, 1037.6 erg s−1. It could be an isolated extension of a spiral arm.[7]

Supernova

One

Anglo-Australian Observatory.[8] Initially it was thought to be a variable star in our galaxy,[9] but later study of the object revealed it was indeed a supernova.[10][11] It was identified as type I.[12]

Nearby galaxies

NGC 7184 is the foremost galaxy of a small galaxy group known as the NGC 7184 group, which also includes NGC 7183.[13] A satellite galaxy lies 3 arcminutes to the south, at a projected separation of 28 kpc.[14]

References

  1. ^ a b c d e f g h "NASA/IPAC Extragalactic Database". Results for NGC 7184. Retrieved 2016-01-18.
  2. ^ Seligman, Courtney. "NGC 7184". Celestial Atlas. Retrieved 19 November 2018.
  3. S2CID 15491635
    .
  4. S2CID 119295831
    .
  5. S2CID 9655238
    .
  6. ^ Sandage, A., Bedke, J. (1994), The Carnegie Atlas of Galaxies. Volume I, Carnegie Institution of Washington
  7. S2CID 119161733
    .
  8. ^ "IAUC 3962: Prob. SN IN NGC 7184; APPULSE OF SAO 186001 TO NEPTUNE; JUPITER I (IO)". www.cbat.eps.harvard.edu.
  9. ^ "IAUC 3994: 1983 TB; SN IN NGC 7184?". www.cbat.eps.harvard.edu.
  10. ^ "IAUC 3995: Poss. N IN Sgr; EDITORIAL NOTICE; 1984o". www.cbat.eps.harvard.edu.
  11. ^ "IAUC 4013: 1984t; SN IN NGC 7184". www.cbat.eps.harvard.edu.
  12. Bibcode:1987JAVSO..16...19S
    .
  13. S2CID 119194025. Archived from the original
    on 31 January 2016. Retrieved 12 December 2018.
  14. S2CID 119042983
    .

External links

Wikimedia Commons has media related to NGC 7184.
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