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Revision as of 22:41, 1 June 2017 by Galaxy Mantis (talk | contribs) (Refer to dark matter measurement.)(diff) ← Previous revision | Latest revision (diff) | Newer revision → (diff)| NGC 4526 | |
|---|---|
 Supernova SN 1994D (lower left) in the outskirts of NGC 4526 | |
| Observation data (J2000 epoch) | |
| Constellation | Virgo |
| Right ascension | 12 34 03.029 |
| Declination | +07° 41′ 56.90″ |
| Redshift | 0.001494±0.000027 |
| Heliocentric radial velocity | 448±8 km/s |
| Distance | 55±5 Mly (16.9±1.6 Mpc) |
| Apparent magnitude (V) | 10.7 |
| Characteristics | |
| Type | SAB(s)0° |
| Apparent size (V) | 7′.2 × 2′.4 |
| Other designations | |
| NGC 4560, UGC 7718, PGC 41772 | |
NGC 4526 is a lenticular galaxy in the Virgo constellation that is seen nearly edge-on. In the Catalogue of Named Galaxies, it is called Superciliosa Virginis, or the heavy-eyebrow galaxy. 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 4.5+4.2
−3.0×10 (450 million) times the mass 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.
Gallery
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NGC 4526 as photographed by the Hubble Space Telescope.
See also
References
- ^ Skrutskie, M. F.; et al. (February 2006), "The Two Micron All Sky Survey (2MASS)", Astronomical Journal, 131 (2): 1163–1183, Bibcode:2006AJ....131.1163S, doi:10.1086/498708.
- ^ "NASA/IPAC Extragalactic Database", Results for NGC 4526, retrieved 2006-10-18.
- Tonry, J. L.; et al. (2001), "The SBF Survey of Galaxy Distances. IV. SBF Magnitudes, Colors, and Distances", Astrophysical Journal, 546 (2): 681–693, arXiv:astro-ph/0011223, Bibcode:2001ApJ...546..681T, doi:10.1086/318301.
- ^ Burstein, D. (November 1979), "Structure and origin of S0 galaxies. I - Surface photometry of S0 galaxies", Astrophysical Journal Supplement Series, 41: 435–450, Bibcode:1979ApJS...41..435B, doi:10.1086/190625.
- Bodifee, Gerard. "Catalogue of One Thousand Named Galaxies" (PDF). Retrieved 21 May 2017.
- Buta, Ronald J.; et al. (2007), Atlas of Galaxies, Cambridge University Press, pp. 13–17, ISBN 0521820480.
- Adebusola B. Alabi; Duncan A. Forbes; Aaron J. Romanowsky; Jean P. Brodie; Jay Strader; Joachim Janz; Christopher Usher; Lee R. Spitler; Sabine Bellstedt; Anna Ferre-Mateu (2016-05-20). "The SLUGGS survey: the mass distribution in early-type galaxies within five effective radii and beyond". Monthly Notices of the Royal Astronomical Society. 460 (04): 3838–3860. doi:10.1093/mnras/stw1213. Retrieved 2017-06-01.
{{cite journal}}: CS1 maint: unflagged free DOI (link) - 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.
{{citation}}:|last2=has generic name (help) - 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.
External links
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