NGC 4444 is an intermediate spiral galaxy in the constellation Centaurus. The morphological classification places it midway on the continuum between a barred spiral (SB) and an unbarred spiral (SA), with an inner region that lies between a ring-like (r) and a purely spiral form (s), and medium- (b) to loosely wound (c) outer spiral arms. This makes it a hybrid ringed, barred spiral galaxy.[6] It has an angular size of 2.4 × 1.6 arcminutes[5] and the estimated mass M is given log M = 9.76, yielding 5.8 billion solar masses.[4]
| NGC 4444 | |
|---|---|
 DSS image of NGC 4444 | |
| Observation data (J2000 epoch) | |
| Constellation | Centaurus |
| Right ascension | 12h 28m 36.419s[1] |
| Declination | −43° 15′ 42.15″[1] |
| Redshift | 0.009771[1] |
| Heliocentric radial velocity | 2915 km/s[1] |
| Distance | (38.8 ± 5.7 Mpc)[2] |
| Characteristics | |
| Type | SAB(rs)bc[3] |
| Mass | 5.8 × 109[4] M☉ |
| Apparent size (V) | 2′.4 × 1′.6[5] |
| Other designations | |
| MCG -07-26-007, PGC 41043[1] | |
References
edit- ^ a b c d e "NGC 4444". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2021-02-04.
- ^ "Distance Results for NGC 4444". NASA/IPAC Extragalactic Database. Retrieved 2011-05-11.
- ^ "NASA/IPAC Extragalactic Database", Results for NGC 4444, retrieved 2011-05-11
- ^ a b Koribalski, B. S.; et al. (July 2004). "The 1000 Brightest HIPASS Galaxies: H I Properties". The Astronomical Journal. 128 (1): 16–46. arXiv:astro-ph/0404436. Bibcode:2004AJ....128...16K. doi:10.1086/421744. S2CID 16229767.
- ^ a b Skrutskie, Michael F.; Cutri, Roc M.; Stiening, Rae; Weinberg, Martin D.; Schneider, Stephen E.; Carpenter, John M.; Beichman, Charles A.; Capps, Richard W.; Chester, Thomas; Elias, Jonathan H.; Huchra, John P.; Liebert, James W.; Lonsdale, Carol J.; Monet, David G.; Price, Stephan; Seitzer, Patrick; Jarrett, Thomas H.; Kirkpatrick, J. Davy; Gizis, John E.; Howard, Elizabeth V.; Evans, Tracey E.; Fowler, John W.; Fullmer, Linda; Hurt, Robert L.; Light, Robert M.; Kopan, Eugene L.; Marsh, Kenneth A.; McCallon, Howard L.; Tam, Robert; Van Dyk, Schuyler D.; Wheelock, Sherry L. (1 February 2006). "The Two Micron All Sky Survey (2MASS)". The Astronomical Journal. 131 (2): 1163–1183. Bibcode:2006AJ....131.1163S. doi:10.1086/498708. ISSN 0004-6256. S2CID 18913331.
- ^ Keel, William C. (August 2009). "Galaxy Classification". Galaxies and the Universe. Retrieved 2011-05-20.
External links
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Media related to NGC 4444 at Wikimedia Commons
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