NGC 7619

NGC 7619 is an elliptical galaxy located in the constellation Pegasus.[1] NGC 7619 and NGC 7626[2] are the dominant and brightest members of the Pegasus galaxy cluster.[3] Both of them were discovered by William Herschel on September 26, 1785.

NGC 7619
NGC 7619 by the Sloan Digital Sky Survey
Credit: NASA/JPL-Caltech
Observation data
ConstellationPegasus
Right ascension23h 17m 14.524s
Declination+8° 12′ 22.63″
Helio radial velocity3,944 km/s
Apparent magnitude (B)12.7
References: "NGC 7619". Simbad. Université de Strasbourg/CNRS. Retrieved September 27, 2020.

The radial velocity of this galaxy was measured in 1929 and found to be double that of any galaxy observed at that time.[4] The measurement was consistent with the extrapolated value predicted by Edwin Hubble; a distance-velocity relation that would later become known as Hubble's Law.[5]

References
  1. Hodge, Paul W. (1961-07-01). "The Gravitattional Stability of the NGC 7619 Group of Galaxies". The Astrophysical Journal. 134: 262. Bibcode:1961ApJ...134..262H. doi:10.1086/147151. Retrieved 2020-09-27.
  2. Randall, S. W.; Jones, C.; Kraft, R.; Forman, W. R.; Sullivan, E. (April 2009). "Merging Cold Fronts In The Galaxy Pair NGC 7619 AND NGC 7626". The Astrophysical Journal. 696 (2): 1431–1440. doi:10.1088/0004-637X/696/2/1431. S2CID 14950971. Retrieved 27 September 2020.
  3. Edson, J. B.; Zwicky, F. (1941). "Remarks on the Pegasus Cluster of Nebulae". Proceedings of the National Academy of Sciences. 27 (8): 366–369. Bibcode:1941PNAS...27..366E. doi:10.1073/pnas.27.8.366. PMC 1078341. PMID 16588471.
  4. Humason, Milton L. (March 15, 1929). "The Large Radial Velocity of N.G.C. 7619". PNAS. 15 (3): 167–168. Bibcode:1929PNAS...15..167H. doi:10.1073/pnas.15.3.167. PMC 522426. PMID 16577159. Retrieved September 26, 2020.
  5. Hubble, E.P. (1929). "A Clue to the Structure of the Universe". Leaflet of the Astronomical Society of the Pacific. 1 (23): 93. Bibcode:1929ASPL....1...93H.
  • Media related to NGC 7619 at Wikimedia Commons


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