astro.wikisort.org - Galaxy

Search / Calendar

NGC 1022 is a barred spiral galaxy located approximately 68[1] million light years away in the equatorial constellation of Cetus. It was discovered on September 10, 1785 by William Herschel. NGC 1022 is a member of the Cetus-Aries group of galaxies.[3]

NGC 1022
Observation data (J2000 epoch)
ConstellationCetus
Right ascension02h 38m 32.74s[1]
Declination−06° 40′ 38.96″[1]
Redshift0.004847[1]
Helio radial velocity1,453 km/s
Distance67.7 Mly (20.75 Mpc)[1]
Apparent magnitude (V)11.34±0.13[2]
Apparent magnitude (B)12.09±0.13[2]
Characteristics
TypeSBa[1]
(R')SB(s)a;HII[2]
SBa(r)p[3]
Apparent size (V)2.4′ × 2.0′[2]
Other designations
NGC 1022, PGC 10010

This galaxy has a morphological classification SBa,[1] indicating a central bar and tightly-wound spiral arms. The elliptical outline of the galaxy has an isophotal axis ratio of 0.78[1] with an angular size of 2.4′ by 2.0′ and a position angle of 115°.[2] The galactic plane is inclined at an angle of 24° to the line of sight from the Earth. The central bar is boxy in shape with narrow spurs that are offset from the main axis.[4]

NGC 1022 is forming new stars at an estimated rate of 1.1 M☉·yr−1. Infrared observations of the nucleus suggests a high rate of star formation activity.[5] The circumnuclear region is home to three giant H II regions with one at the nucleus, a second to the northeast, and the third slightly to the northwest.[3] The galaxy was observed as part of a Hubble study of black holes.[6]


References


  1. Ann, H. B.; et al. (2015). "A Catalog of Visually Classified Galaxies in the Local (z ∼ 0.01) Universe". The Astrophysical Journal Supplement Series. 217 (2): 27–49. arXiv:1502.03545. Bibcode:2015ApJS..217...27A. doi:10.1088/0067-0049/217/2/27. S2CID 119253507.
  2. Gil de Paz, Armando; et al. (December 2007). "The GALEX Ultraviolet Atlas of Nearby Galaxies". The Astrophysical Journal Supplement Series. 173 (2): 185–255. arXiv:astro-ph/0606440. Bibcode:2007ApJS..173..185G. doi:10.1086/516636. S2CID 119085482.
  3. Franco, José; et al. (November 2000). "Decreasing Density Gradients in Circumnuclear H II Regions of Barred Galaxies NGC 1022, NGC 1326, and NGC 4314". The Astrophysical Journal. 544 (1): 277–282. arXiv:astro-ph/0007040. Bibcode:2000ApJ...544..277F. doi:10.1086/317189.
  4. Erwin, Peter; Debattista, Victor P. (June 2013). "Peanuts at an angle: detecting and measuring the three-dimensional structure of bars in moderately inclined galaxies". Monthly Notices of the Royal Astronomical Society. 431 (4): 3060–3086. arXiv:1301.0638. Bibcode:2013MNRAS.431.3060E. doi:10.1093/mnras/stt385.
  5. Garcia-Barreto, J. A.; et al. (December 1991). "Circumnuclear star formation in the barred galaxy NGC 1022". Astronomy and Astrophysics. 252: 19. Bibcode:1991A&A...252...19G.
  6. Garner, Rob (2020-01-24). "Hubble Sees Dusty Galaxy With Supermassive Center". NASA. Retrieved 2020-06-17.



На других языках

[de] NGC 1022

NGC 1022 ist eine Balken-Spiralgalaxie mit hoher Sternentstehungsrate vom Hubble-Typ SBa im Sternbild Walfisch südlich der Ekliptik. Sie ist schätzungsweise 65 Millionen Lichtjahre von der Milchstraße entfernt und hat einen Durchmesser von etwa 45.000 Lichtjahren. Im selben Himmelsareal befinden sich u. a. die Galaxien NGC 961, NGC 991, NGC 1051, IC 243.
- [en] NGC 1022

[ru] NGC 1022

NGC 1022 (другие обозначения — MCG -1-7-25, IRAS02360-0653, PGC 10010) — спиральная галактика с перемычкой (SBa) в созвездии Кит, находится от Земли на расстоянии примерно в 66 млн световых лет[4].


Текст в блоке "Читать" взят с сайта "Википедия" и доступен по лицензии Creative Commons Attribution-ShareAlike; в отдельных случаях могут действовать дополнительные условия.

Другой контент может иметь иную лицензию. Перед использованием материалов сайта WikiSort.org внимательно изучите правила лицензирования конкретных элементов наполнения сайта.

2019-2025
WikiSort.org - проект по пересортировке и дополнению контента Википедии