NGC 7603

NGC 7603 is a spiral Seyfert galaxy in the constellation Pisces.[1] It is listed (as Arp 92) in the Atlas of Peculiar Galaxies.[4] It is interacting with the smaller elliptical galaxy PGC 71041 nearby.[1]

NGC 7603
The spiral Seyfert galaxy NGC 7603 (upper right) is interacting with the smaller galaxy PGC 71041 (lower left).
Credit: Hubble Space Telescope
Observation data (J2000.0 epoch)
ConstellationPisces
Right ascension23h 18m 56.4s[1]
Declination+00° 14′ 38.2″[1]
Redshift0.029524±0.000073[1]
Heliocentric radial velocity8851±22 km/s[1]
Galactocentric velocity8978±22 km/s[1]
Distance412.9 ± 28 Mly (126.60 ± 8.58 Mpc)[2]
Apparent magnitude (V)14.04[1]
Characteristics
TypeSA(rs)b: pec Sy1.5[1]
Apparent size (V)1.5 × 1.0 moa[1]
Other designations
NGC 7603, UGC 12493, MCG 0-59-21, MK 530, PGC 71035, IRAS23163-0001, UM 156, ARP 92, ZWG 380.26[3]
References: NGC+7603[1]

This galaxy pair has long been a cornerstone for those who are critical of the view that the universe is expanding, and advocates for non-standard cosmology such as Halton Arp, Fred Hoyle, and others.[5][6] This is due to the position of two quasars, one at each edge of the filament connecting the two galaxies, with much more redshift than either galaxy.

NGC 7603 (SDSS DR14)

References
  1. "Results for object NGC 7603". NASA/IPAC Extragalactic Database. Retrieved 2017-07-06.
  2. "NGC 7603". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 6 July 2017.
  3. "Revised NGC Data for NGC 4889". spider.seds.org. Retrieved 2015-10-13.
  4. "ARP Atlas of Peculiar Galaxies 89-92". ARP ATLAS OF PECULIAR GALAXIES. Retrieved 7 July 2017.
  5. "NGC 7603". Quasars.org. Archived from the original on 12 October 2018. Retrieved 3 December 2018.
  6. "Universe: The Cosmology Quest 1 of 2". Youtube. Retrieved 3 December 2018.


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