Elliptical galaxy in the constellation Coma Berenices
NGC 4869The elliptical galaxy NGC 4869.
Constellation Coma Berenices Right ascension 12h 59m 23.36s Declination 27° 54′ 41.78″ Redshift 0.022820 Heliocentric radial velocity 6,841 km/s Distance 343 Mly (105.16 Mpc ) Group or cluster Coma Cluster Apparent magnitude (V) 13.52 Apparent magnitude (B) 14.9 Type E3, PAS Size 37.62 kiloparsecs (122,700 light-years)2MASS K-band total isophote)[ 1] Notable features Radio galaxy MCG +05-31-065, CGCG 160-225, PGC 44587, B2 1256+58, 5C 04.081, TXS 1257+281, 7C 1256+2810, KUG 1256+375, ABELL 1656:[D80] 105
NGC 4869 is an elliptical galaxy located in the constellation of Coma Berenices . It is located 343 million light years from Earth .[ 1] William Herschel in April 1785 but also observed by both John Herschel and Heinrich d'Arrest , in March 1827 and May 1863 respectively.[ 2] Coma Cluster [ 1] [ 3] position angle of 325°.[ 4]
Characteristics
NGC 4869 is classified as a radio galaxy with a faint radio core with two oppositely directed radio jets and a lengthy low-surface brightness tail.[ 5] γ-ray luminosity of Lγ ≤ 4 x 1039 erg s−1 like NGC 4874 .[ 6] absorption feature in the galaxy, possibly representing an edge on disk .[ 3]
NGC 4869 contains a narrow angle tailed radio source .[ 7] [ 8] kpc .[ 5] polarization of 18% at 4.535 GHz and 21% at 8.465 GHz[ 7] [ 5] [ 5]
According to a Chandra X-ray image of NGC 4869, a straight collimated jet is seen flaring when traversing a surface brightness edge.[ 5]
Supermassive black hole
The supermassive black hole in NGC 4869 is estimated to be 1.32 x 108 Mʘ (108.12 Mʘ ) based on a study made by Jong-Hak Woo and Urry in 2002.[ 9]
References
^ a b c "By Name NASA/IPAC Extragalactic Database" . ned.ipac.caltech.edu . Retrieved 2024-10-13 .^ "New General Catalog Objects: NGC 4850 - 4899" . cseligman.com . Retrieved 2024-10-13 .^ a b Capetti, A.; de Ruiter, H.R.; Fanti, R.; Morganti, R.; Parma, P.; Ulrich, M.-H. (2000). "The HST snapshot survey of the B2 sample of low luminosity radio-galaxies: a picture gallery" . Astronomy & Astrophysics . 362 : 871– 885. arXiv :astro-ph/0009056 Bibcode :2000A&A...362..871C . ^ de Juan, L.; Colina, L.; Perez-Fournon, I. (1994). "Surface photometry of low-luminosity radio galaxies" . Astronomical Journal Supplement Series . 91 (2): 507– 551. Bibcode :1994ApJS...91..507D . doi :10.1086/191947 . ^ a b c d e Lal, Dharam V. (2020-09-11). "NGC 4869 in the Coma Cluster: Twist, Wrap, Overlap, and Bend" . The Astronomical Journal . 160 (4): 161. arXiv :2009.07146 Bibcode :2020AJ....160..161L . doi :10.3847/1538-3881/abacd1 ISSN 0004-6256 . ^ Baghmanyan, Vardan; Zargaryan, Davit; Aharonian, Felix; Yang, Ruizhi; Casanova, Sabrina; Mackey, Jonathan (2022-08-13). "Detailed study of extended γ-ray morphology in the vicinity of the Coma cluster with Fermi Large Area Telescope " . Monthly Notices of the Royal Astronomical Society . 516 (1): 562– 571. arXiv :2110.00309 doi :10.1093/mnras/stac2266 ISSN 0035-8711 . ^ a b Bonafede, A.; Feretti, L.; Murgia, M.; Govoni, F.; Giovannini, G.; Dallacasa, D.; Dolag, K.; Taylor, G. B. (April 2010). "The Coma cluster magnetic field from Faraday rotation measures" . Astronomy and Astrophysics . 513 : A30. arXiv :1002.0594 Bibcode :2010A&A...513A..30B . doi :10.1051/0004-6361/200913696 . ISSN 0004-6361 . ^ Feretti, L.; Dallacasa, D.; Giovannini, G.; Venturi, T. (June 1990). "Astrophysical implications of the study of the tailed radio source NGC 4869 in the Coma cluster" . Astronomy & Astrophysics . 232 (2): 337– 343. Bibcode :1990A&A...232..337F . ISSN 0004-6361 . ^ Woo, Jong-Hak; Urry, C. Megan (November 2002). "AGN Black Hole Masses and Bolometric Luminosities". The Astronomical Journal . 576 . arXiv :astro-ph/0207249 Bibcode :2002ApJ...579..530W . doi :10.1086/342878 .
External links
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NGC 4869 .
