NGC 4603

NGC 4603
A Hubble Space Telescope (HST) image of NGC 4603.
Observation data (J2000 epoch)
Constellation	Centaurus
Right ascension	12^h 40^m 55.195^s^[1]
Declination	–40° 58′ 35.05″^[1]
Helio radial velocity	+7003256100000000000♠2561^[2] km/s
Distance	106.8 Mly (32.71 Mpc)^[2]
Apparent magnitude (V)	12.3^[3]
Characteristics
Type	SA(s)c
Apparent size (V)	3′.4 × 2′.5^[3]
Other designations
PGC 42510^[3]

NGC 4603 is a spiral galaxy located about 107^[2] million light years away in the constellation Centaurus. It is a member of the Centaurus Cluster of galaxies, belonging to the section designated "Cen30". The morphological classification is SA(s)c,^[4] which indicates it is a pure spiral galaxy with relatively loosely wound arms.^[5]

During 1999, this galaxy was the subject of an extended study using the Hubble Space Telescope to locate Cepheid variable stars. A total of 7001430000000000000♠43±7 were found, and the measurement of their periodicity gave a net distance estimate of 7024102838140236953♠108.7+5.5
−4.9 Mly (7024102753063462857♠33.3+1.7
−1.5 Mpc). This is consistent with the distance estimate determined through redshift measurements. As of the time of this study, NGC 4603 was the most distant galaxy for which a distance estimate had been made using Cepheid variable.^[6]

On May 21, 2008, supernova SN 2008cn was discovered at a position 23.″2 north and 4.″7 east of the galaxy center. It was determined to be a high-luminosity Type II-P supernova, with a progenitor tentatively identified as a red supergiant with 15 ± 2 solar masses. Based upon the yellowish color, it may have been a member of a binary star system.^[7]

References

1 2 Skrutskie, M. F.; et al. (February 2006), "The Two Micron All Sky Survey (2MASS)", The Astronomical Journal, 131 (2): 1163–1183, Bibcode:2006AJ....131.1163S, doi:10.1086/498708.
1 2 3 Crook, Aidan C.; et al. (February 2007), "Groups of Galaxies in the Two Micron All Sky Redshift Survey", The Astrophysical Journal, 655: 790–813, arXiv:astro-ph/0610732, Bibcode:2007ApJ...655..790C, doi:10.1086/510201.
1 2 3 "NASA/IPAC Extragalactic Database". Results for NGC 4603. Retrieved 2007-04-01.
↑ Martínez-García, Eric E.; González-Lópezlira, Rosa A. (March 2013), "Signatures of Long-lived Spiral Patterns", The Astrophysical Journal, 765 (2): 105, arXiv:1301.6634, Bibcode:2013ApJ...765..105M, doi:10.1088/0004-637X/765/2/105.
↑ Buta, Ronald J.; et al. (2007), Atlas of Galaxies, Cambridge University Press, pp. 13–17, ISBN 0521820480.
↑ Newman, Jeffrey A.; et al. (October 1999), "A Cepheid Distance to NGC 4603 in Centaurus", The Astrophysical Journal, 523 (2): 506–520, arXiv:astro-ph/9904368, Bibcode:1999ApJ...523..506N, doi:10.1086/307764.
↑ Elias-Rosa, Nancy; et al. (December 2009), "On the Progenitor of the Type II-Plateau SN 2008cn in NGC 4603", The Astrophysical Journal, 706 (2): 1174–1183, arXiv:0910.2275, Bibcode:2009ApJ...706.1174E, doi:10.1088/0004-637X/706/2/1174.

New General Catalogue 4500 to 4999

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Astronomical catalog List of NGC objects

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