NGC 1165

NGC 1165
NGC 1165 (Digitalized Sky Survey)
Observation data (J2000.0 epoch)
ConstellationFornax
Right ascension02h 58m 47.7s [1]
Declination−32° 05′ 57″ [1]
Redshift0.016415 [1]
Heliocentric radial velocity4921 ± 7 km/s [1]
Distance230 Mly [1]
Apparent magnitude (V)12.70 [1]
Apparent magnitude (B)13.20 [1]
Characteristics
TypeSB(rs)b [1]
Apparent size (V)1.8 x 1.4 [1]
Other designations
PGC 11270, MCG -05-08-009, ESO 417-G008

NGC 1165 is a barred spiral galaxy located in the constellation Fornax. It lies approximately 230 million light-years away from Earth and was discovered by astronomer John Herschel in 1835.[2][3][4]

Structure and characteristics

NGC 1165 is classified as an SB(rs)b type galaxy, indicating that it is a barred spiral galaxy with a prominent central bar and slightly loose spiral arms. The galaxy spans approximately 1.8 × 1.4 arcminutes in the sky and features active star-forming regions within its spiral arms.[5]

Observations using infrared and optical telescopes suggest the presence of a central supermassive black hole, a common feature in many barred spiral galaxies. The galaxy also exhibits regions of intense star formation, indicated by high concentrations of ionized hydrogen gas.

Discovery

NGC 1165 was discovered by the British astronomer John Herschel during his observations of the southern skies in 1835. Since its discovery, it has been a subject of interest for astronomers studying barred spiral galaxies and galactic evolution.[6]

Location and distance

NGC 1165 is situated in the constellation Fornax and is approximately 230 million light-years away from the Milky Way. Its radial velocity has been measured at around 4921 km/s, indicating its movement relative to our galaxy.

Significance

Barred spiral galaxies like NGC 1165 provide valuable insight into galactic dynamics and evolution. The study of such galaxies helps astronomers understand the role of bars in driving star formation and the distribution of interstellar matter.

See also

References

  1. ^ a b c d e f g h i NASA/IPAC Extragalactic Database
  2. ^ "New General Catalog Objects: NGC 1150 - 1199". cseligman.com. Retrieved 2024-12-23.
  3. ^ "NGC 1165 - Deep Sky Object Information". The Sky Live. Retrieved 2024-12-25.
  4. ^ "NGC 1165 Details". srku.edu.in. Retrieved 28 December 2024.
  5. ^ "NGC 1165". SEDS - Students for the Exploration and Development of Space. Retrieved 2024-12-25.
  6. ^ "NGC 1165". SIMBAD Astronomical Database. Retrieved 2024-06-27.

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