Supernova SN 1994D (lower left) in the outskirts of NGC 4526
|Observation data (J2000 epoch)|
|Right ascension||12h 34m 03.029s|
|Declination||+07° 41′ 56.90″|
|Helio radial velocity||±8 km/s448|
|Distance||±5 Mly ( 55±1.6 Mpc) 16.9|
|Apparent magnitude (V)||10.7|
|Apparent size (V)||7′.2 × 2′.4|
|NGC 4560, UGC 7718, PGC 41772|
NGC 4526 (also listed as NGC 4560) is a lenticular galaxy located approximately 55 million light-years from the Solar System in the Virgo constellation and discovered on 13 April 1784 by William Herschel.
The galaxy is seen nearly edge-on. The morphological classification is SAB(s)0°, which indicates a lenticular structure with a weak bar across the center and pure spiral arms without a ring. It belongs to the Virgo cluster and is one of the brightest known lenticular galaxies. In the galaxy's outer halo, globular cluster orbital velocities indicate abnormal poverty of dark matter: only 43±18% of the mass within 5 effective radii.
The inner nucleus of this galaxy displays a rise in stellar orbital motion that indicates the presence of a central dark mass. The best fit model for the motion of molecular gas in the core region suggests there is a supermassive black hole with about +4.2
−3.0×108 (450 million) times the 4.5mass of the Sun. This is the first object to have its black-hole mass estimated by measuring the rotation of gas molecules around its centre with an Astronomical interferometer (in this case the Combined Array for Research in Millimeter-wave Astronomy).
Supernova SN 1969E was discovered in this galaxy in 1969, reaching a peak magnitude of 16. In 1994, a Type 1a supernova was discovered about two weeks before reaching peak brightness. Designated SN 1994D, it was caused by the explosion of a white dwarf star composed of carbon and oxygen.
NGC 4526 as photographed by the Hubble Space Telescope.
- NGC 4526 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
- Lost Galaxy (NGC4526) in Virgo
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- Davis, Timothy A.; et al. (February 2013), "A black-hole mass measurement from molecular gas kinematics in NGC4526", Nature, 494 (7437): 328–330, arXiv:1301.7184, Bibcode:2013Natur.494..328D, doi:10.1038/nature11819, PMID 23364690.
- Kowal, C. T.; Sargent, W. L. W. (November 1971), "Supernovae discovered since 1885", Astronomical Journal, 41: 756–764, Bibcode:1971AJ.....76..756K, doi:10.1086/111193.
- Lentz, Eric J.; et al. (August 2001), "Non-LTE Synthetic Spectral Fits to the Type Ia Supernova 1994D in NGC 4526", The Astrophysical Journal, 557 (1): 756–764, arXiv:astro-ph/0104225, Bibcode:2001ApJ...557..266L, doi:10.1086/322239.
- "The whirling disc of NGC 4526". www.spacetelescope.org. ESA/Hubble. Retrieved 20 October 2014.