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NGC 4526

Coordinates:Sky map12h34m03.029s,07° 41′ 56.90″
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NGC4526
NGC 4526 with SN 1994D @ bottom left
SupernovaSN 1994D(lower left) in the outskirts of NGC 4526's central disk
Observation data (J2000epoch)
ConstellationVirgo
Right ascension12h34m03.029s[1]
Declination+07° 41′ 56.90″[1]
Redshift0.001494±0.000027
Heliocentric radial velocity448±8 km/s[2]
Distance55±5Mly(16.9±1.6Mpc)[3]
52Mly(15.8Mpc)[4]
Apparent magnitude(V)10.7[2]
Characteristics
TypeSAB(s)0°[5]
Apparent size(V)7′.2 × 2′.4[2]
Other designations
NGC4560,[2]UGC7718,[2]PGC41772[2]

NGC 4526(also listed asNGC 4560) is alenticular galaxywith an embedded dusty disc, located approximately 55 millionlight-yearsfrom theSolar System[3]in theVirgoconstellationand discovered on 13 April 1784 byWilliam Herschel.[6]

The galaxy is seen nearly edge-on. Themorphological classificationis SAB(s)0°,[5]which indicates a lenticular structure with a weak bar across the center and purespiral armswithout a ring.[7]It belongs to theVirgo clusterand is one of the brightest known lenticular galaxies.[5] In the galaxy's outer halo,globular clusterorbital velocities[8]indicate abnormal poverty of dark matter: only 43±18% of the mass within 5effective 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 asupermassive black holewith about4.5+4.2
−3.0×108(450 million) times themass of the Sun.[9]This is the first object to have its black-hole mass estimated by measuring the rotation of gas molecules around its centre with anastronomical interferometer(in this case theCombined Array for Research in Millimeter-wave Astronomy).

SupernovaSN 1969Ewas discovered in this galaxy in 1969, reaching a peak magnitude of 16.[10]In 1994, atype Ia supernovawas discovered about two weeks before reaching peak brightness. DesignatedSN 1994D,it was caused by the explosion of awhite dwarfstar composed of carbon and oxygen.[11]

WiderHubble Space Telescopeimage showing the envelope of more distant orbiting stars

See also

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References

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  1. ^abSkrutskie, 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.ISSN0004-6256.S2CID18913331.
  2. ^abcdef"NASA/IPAC Extragalactic Database",Results for NGC 4526,retrieved2006-10-18.
  3. ^abTonry, 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,S2CID17628238.
  4. ^Hatt, Dylan; et al. (July 2018)."The Carnegie-Chicago Hubble Program. IV. The Distance to NGC 4424, NGC 4526, and NGC 4356 via the Tip of the Red Giant Branch".The Astrophysical Journal.861(2): 10.arXiv:1806.02900.Bibcode:2018ApJ...861..104H.doi:10.3847/1538-4357/aac9cc.S2CID119430198.104.
  5. ^abcBurstein, 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.
  6. ^Courtney Seligman."New General Catalog Objects: NGC 4500 - 4549".RetrievedOctober 17,2021.
  7. ^Buta, Ronald J.; et al. (2007),Atlas of Galaxies,Cambridge University Press,pp. 13–17,ISBN978-0521820486.
  8. ^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(4): 3838–3860.arXiv:1605.06101.Bibcode:2016MNRAS.460.3838A.doi:10.1093/mnras/stw1213.S2CID55054073.
  9. ^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,PMID23364690,S2CID205232307.{{citation}}:|last2=has generic name (help)
  10. ^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.
  11. ^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,S2CID119535927.
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