NGC 1407

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NGC 1407
Color cutout hst 9427 02 acs wfc f814w f435w sci NGC 1407.jpg
NGC 1407 by Hubble Space Telescope
Observation data (J2000 epoch)
Constellation Eridanus
Right ascension 03h 40m 11.9s [1]
Declination −18° 34′ 48″ [1]
Redshift 1,779 ± 9 km/s [1]
Distance 76 Mly (23.3 Mpc) [1]
Apparent magnitude  (V)9.7
Characteristics
Type E0 [1]
Apparent size  (V)4′.6 × 4′.3 [1]
Other designations
ESO 548- G 067, PGC 13505 [1]

NGC 1407 is an elliptical galaxy in Eridanus. It is at a distance of 76 million light-years from Earth. It is the brightest galaxy in the NGC 1407 Group, part of the Eridanus Group, with NGC 1407 being its brightest member. [2] NGC 1400, the second-brightest of the group lies 11.8 arcmin away.

Contents

NGC 1407 is X-ray luminous, with high hot gas Fe abundance, [3] and with evidence of recurrent radio outbursts. [4] In the central area of the galaxy are present old stars, with mean age 12.0 ± 1.1 Gyrs, that are metal rich and with supersolar abundances of α-elements. Observations indicate that NGC 1407 hasn't recently undergone strong star-formation activity. [5] The galaxy hosts a supermassive black hole with a mass 1.12 ± 0.42 billion solar masses, based on velocity dispersion. [6]

The galaxy was discovered by 6 October 1785 by William Herschel. [7]

References

  1. 1 2 3 4 5 6 7 "NASA/IPAC Extragalactic Database". Results for NGC 1407. Retrieved 2016-01-18.
  2. ↑ Su, Yuanyuan; Gu, Liyi; White III, Raymond E.; Irwin, Jimmy (10 May 2014). "Joint XMM-Newton and Chandra observations of the NGC 1407/1400 complex: a tail of an early-type galaxy and a tale of a nearby merging group". The Astrophysical Journal. 786 (2): 152. arXiv: 1403.6416 . Bibcode:2014ApJ...786..152S. doi:10.1088/0004-637X/786/2/152. S2CID   118452480.
  3. ↑ Su, Yuanyuan; Irwin, Jimmy A. (20 March 2013). "Investigating the potential dilution of the metal content of hot gas in early-type galaxies by accreted cold gas". The Astrophysical Journal. 766 (1): 61. arXiv: 1301.7706 . Bibcode:2013ApJ...766...61S. doi:10.1088/0004-637X/766/1/61. S2CID   118617980.
  4. ↑ Giacintucci, Simona; O’Sullivan, Ewan; Clarke, Tracy E.; Murgia, Matteo; Vrtilek, Jan M.; Venturi, Tiziana; David, Laurence P.; Raychaudhury, Somak; Athreya, Ramana M. (20 August 2012). "Recurrent radio outbursts at the center of the NGC 1407 galaxy group". The Astrophysical Journal. 755 (2): 172. arXiv: 1206.5751 . Bibcode:2012ApJ...755..172G. doi:10.1088/0004-637X/755/2/172. S2CID   119112642.
  5. ↑ Spolaor, Max; Forbes, Duncan A.; Proctor, Robert N.; Hau, George K. T.; Brough, Sarah (April 2008). "The early-type galaxies NGC 1407 and NGC 1400 – II. Star formation and chemical evolutionary history". Monthly Notices of the Royal Astronomical Society. 385 (2): 675–686. arXiv: 0801.2005 . Bibcode:2008MNRAS.385..675S. doi: 10.1111/j.1365-2966.2008.12892.x . S2CID   15326784.
  6. ↑ Sadoun, Raphael; Colin, Jacques (11 October 2012). "-σ relation between supermassive black holes and the velocity dispersion of globular cluster systems". Monthly Notices of the Royal Astronomical Society: Letters. 426 (1): L51 –L55. arXiv: 1204.0144 . Bibcode:2012MNRAS.426L..51S. doi: 10.1111/j.1745-3933.2012.01321.x . S2CID   117185846.
  7. ↑ Seligman. "NGC 1407 (= PGC 13505)".


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