NGC 1079 | |
---|---|
Observation data ( J2000 epoch) | |
Right ascension | 02h 43m 44.3s [1] |
Declination | −29° 00′ 12″ [1] |
Redshift | 0.004843 ± 0.000017 km/s [2] |
Distance | ~61,5
Mly
[2] (18.8 ± 1.3 Mpc) |
Apparent magnitude (V) | 11.5 [2] |
Apparent magnitude (B) | 12.4 [2] |
Surface brightness | 14.4 mag/arcmin2 [2] |
Characteristics | |
Apparent size (V) | 5.50 x 3.1 arcmin [2] |
Other designations | |
ESO 416-13, MCG -5-7-17, IRAS02415-2913, PGC 10330 |
NGC 1079 is an isolated, weakly barred, grand-design spiral galaxy with transitional ring-like structures [3] containing a number of prominent A type stars. [1] It is located in the Fornax constellation and is part of the Eridanus supercluster. [4] It was first observed and catalogued by the astronomer John Herschel in 1835. [5]
NGC 1079 has unique characteristics when compared to other galaxies with a similar luminosity. Its H l content per unit blue luminosity is three times higher. Its mass and rotation velocity is twice as large as normal and it has a low surface brightness in its spiral arms, exterior to a high surface brightness center dominated by old stars. A study [6] suggests these characteristics occur due to a luminous matter deficiency relative to its dynamical mass within the Holmberg radius.
Astronomers first identified NGC 1079's ring structure in 1996 by studying its HST ultraviolet imaging. [7] Later studies have shown virtually all the star-formation activity in this galaxy occurs inside the ring. [8]
Other galaxies with star-forming rings include:
NGC 1079 | |
---|---|
Observation data ( J2000 epoch) | |
Right ascension | 02h 43m 44.3s [1] |
Declination | −29° 00′ 12″ [1] |
Redshift | 0.004843 ± 0.000017 km/s [2] |
Distance | ~61,5
Mly
[2] (18.8 ± 1.3 Mpc) |
Apparent magnitude (V) | 11.5 [2] |
Apparent magnitude (B) | 12.4 [2] |
Surface brightness | 14.4 mag/arcmin2 [2] |
Characteristics | |
Apparent size (V) | 5.50 x 3.1 arcmin [2] |
Other designations | |
ESO 416-13, MCG -5-7-17, IRAS02415-2913, PGC 10330 |
NGC 1079 is an isolated, weakly barred, grand-design spiral galaxy with transitional ring-like structures [3] containing a number of prominent A type stars. [1] It is located in the Fornax constellation and is part of the Eridanus supercluster. [4] It was first observed and catalogued by the astronomer John Herschel in 1835. [5]
NGC 1079 has unique characteristics when compared to other galaxies with a similar luminosity. Its H l content per unit blue luminosity is three times higher. Its mass and rotation velocity is twice as large as normal and it has a low surface brightness in its spiral arms, exterior to a high surface brightness center dominated by old stars. A study [6] suggests these characteristics occur due to a luminous matter deficiency relative to its dynamical mass within the Holmberg radius.
Astronomers first identified NGC 1079's ring structure in 1996 by studying its HST ultraviolet imaging. [7] Later studies have shown virtually all the star-formation activity in this galaxy occurs inside the ring. [8]
Other galaxies with star-forming rings include: