NGC 7079
Barred lenticular galaxy NGC 7079.
Observation data (J2000 epoch)
ConstellationGrus
Right ascension21h 32m 35.2s[1]
Declination−44° 04′ 03″[1]
Redshift0.00895[1]
Heliocentric radial velocity2,684 km/s[1]
Distance110.6 Mly
Apparent magnitude (V)11.6[1]
Characteristics
TypeSB0^0(s), LINER[1]
Apparent size (V)2.1 x 1.3'[1]
Other designations
ESO 287-36, AM 2129-441, MCG -7-44-22, PGC 66934[1]

NGC 7079 is a barred lenticular galaxy[2] located about 110.58 million light-years away[3] in the constellation of Grus.[4][5] NGC 7079 is also classified as a LINER galaxy.[3][5] It is tilted about 51° to the Earth's line of sight.[2] NGC 7079 was discovered by astronomer John Herschel on September 6, 1834.[4]

Physical characteristics

NGC 7079 has a faint cigar-shaped bar with ansae at the ends, and there is another very faint spiral structure surrounding it.[6][7] The rim of the disk also has a somewhat faint ring-like structure.[7]

Emission of doubly ionized oxygen gas

In NGC 7079, it has been indicated that there is a faint emission of doubly ionized oxygen. The ionized gas is rotating in the opposite direction of the stars in the galaxy. The counter-rotation has been attributed to the accretion of gas from outside of the galaxy.[2]

Group membership

NGC 7079 is a member of the NGC 7079 Group. The group, along with other nearby groups are part of the Pavo-Indus and Grus clouds of galaxies which form a connection between the Pavo–Indus and Virgo Superclusters. The other members of the NGC 7079 Group are NGC 7070, NGC 7070A, NGC 7097, NGC 7097A, ESO 287-37, ESO 287-39, ESO 287-41, and ESO 287-43.[8]

See also

References

  1. 1 2 3 4 5 6 7 8 "NASA/IPAC Extragalactic Database". Results for NGC 7079. Retrieved 2017-07-18.
  2. 1 2 3 Bettoni, D.; Galletta, G. (1997). "A survey of the stellar rotation in barred galaxies" (PDF). Astronomy and Astrophysics Supplement Series. 124: 61–74. Bibcode:1997A&AS..124...61B. doi:10.1051/aas:1997180.
  3. 1 2 Marino, A.; Rampazzo, R.; Bianchi, L.; Annibali, F.; Bressan, A.; Buson, L.M.; Clemens, M. S.; Panuzzo, P.; Zeilinger, W. W. (9 September 2010). "Nearby early-type galaxies with ionized gas: the UV emission from GALEX observations" (PDF). Monthly Notices of the Royal Astronomical Society. 411 (1): 311–331. arXiv:1009.1931. Bibcode:2011MNRAS.411..311M. doi:10.1111/j.1365-2966.2010.17684.x. S2CID 119204455.
  4. 1 2 "New General Catalog Objects: NGC 7050 - 7099". cseligman.com. Retrieved 2017-07-01.
  5. 1 2 "Your NED Search Results". ned.ipac.caltech.edu. Retrieved 2017-07-20.
  6. ↑ "Detailed Object Classifications". ned.ipac.caltech.edu. Retrieved 2017-07-20.
  7. 1 2 "NGC 7079 - (RL)SB(s)0o". Archived from the original on 2012-09-09. Retrieved 2017-07-22.
  8. ↑ Fouque, P.; Proust, D.; Quintana, H.; Ramirez, A. (30 September 1993). "Dynamics of the Pavo-Indus and Grus clouds of galaxies" (PDF). Astronomy and Astrophysics Supplement Series. 100: 493–500. Bibcode:1993A&AS..100..493F.
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