NGC 877

Source: Wikipedia, the free encyclopedia.
154 ± 25 Mly (47.1 ± 7.5 Mpc)[1]
Apparent magnitude (V)11.8 [2]
Characteristics
TypeSAB(rs)bc [1]
Apparent size (V)2.4′ × 1.8′ [1]
Notable featuresLuminous infrared galaxy
Other designations
UGC 1768, CGCG 438-052, MCG +02-06-058, PGC 8775[1]

NGC 877 is an

interacts with NGC 876
.

NGC 877 features two

H-alpha, the arms have numerous knots and appear brighter than the nucleus.[4] The northwest part of the galaxy has higher polarised emission than the rest of the galaxy. A bar appears in radio waves.[5]
The nucleus has activity that resembles that of a
HII region.[6] The galaxy has been categorised as a luminous infrared galaxy, a category of galaxies associated with high star formation rate. The total infrared luminosity of the galaxy is estimated to be between 1011.04 L☉[7] and 1011.1 L☉, lying near the threshold to classify a galaxy as luminous infrared. The total star formation rate in NGC 877 is estimated to be between 20 and 53 M☉ per year.[8]

One possible

cataclysmic variable or another type of variable star.[11]

NGC 877 forms a pair with the edge-on spiral galaxy NGC 876, which lies 2.1 arcminutes to the southwest. At the distance of NGC 877, this corresponds to a projected distance of 30 kpc.[4] A low surface brightness bridge connects the two galaxies.[5] NGC 870 and NGC 871 are two other nearby galaxies.[4] NGC 877 is the brightest and most massive member of a galaxy group known as the NGC 877 group or LGG (Lyon Groups of Galaxies) 53. Other members of the group include NGC 876 and NGC 871, as well as UGC 1693, IC 1791, UGC 1773, and UGC 1817.[12] The group contains large amounts of HI gas.[13]

Gallery

  • NGC 877 (left) and NGC 876 by GALEX
    NGC 877 (left) and NGC 876 by GALEX
  • View of the NGC 877 group, by Adam Block
    View of the NGC 877 group, by Adam Block

References

  1. ^ a b c d e f g h "NASA/IPAC Extragalactic Database". Results for NGC 877. Retrieved 2016-01-18.
  2. ^ "Revised NGC Data for NGC 877". spider.seds.org. Retrieved 25 November 2018.
  3. ^ Seligman, Courtney. "NGC 877 (= PGC 8775)". Celestial Atlas. Retrieved 19 November 2018.
  4. ^
    S2CID 18181421
    .
  5. ^
    S2CID 53558637
    .
  6. S2CID 17086638
    .
  7. S2CID 14825701
    .
  8. S2CID 2997010
    .
  9. ^ "ATel #12384: ATLAS19bdu (AT2019rn): discovery of a candidate SN in NGC 0877 (47 Mpc)". ATel. 13 January 2019.
  10. ^ "ATel #12388: Spectroscopic classification of SN2019rn as a Type II supernova with Keck-II". ATel. 14 January 2019.
  11. ^ "ATel #12391: SCAT classification of optical transients". ATel. 15 January 2019.
  12. ISSN 0365-0138
    .
  13. S2CID 119199197
    .

External links

Wikimedia Commons has media related to NGC 877.
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