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3C 75

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3C 75
Image illustrative de l’article 3C 75
Image en ondes radio (cyan) et en visible (rouge) de 3C 75.
Données d’observation
(Époque J2000)
Constellation Baleine
Ascension droite (α) 02h 57m 42,63s[1]
Déclinaison (δ) +06° 01′ 04,8″ [1]
Magnitude apparente (V) +13.93
Décalage vers le rouge 0.0231[2]

Localisation dans la constellation : Baleine

(Voir situation dans la constellation : Baleine)
Astrométrie
Distance ∼ 296 millions d'a.l. (∼ 90,8 Mpc)[2],[3]
Caractéristiques physiques
Type d'objet Galaxies actives en interaction
Dimensions 0,741' × 0,489'
Découverte
Désignation(s) MCG+01-08-027, NGC 1128
Liste des objets célestes
modifier 

3C75, ou 3C 75, est constitué de deux galaxies actives en interaction situées à ∼ 300 millions d'a.l. (∼ 92 Mpc) de la Terre dans la constellation de la Baleine, dans l'amas de galaxies Abell 400[3],[4]. On y retrouve deux trous noirs supermassifs distants l'un de l'autre de ∼ 25 000 a.l. (∼ 7,66 kpc) et formant un trou noir binaire[3].

3C 75 pourrait être la source de rayons X 2A 0252+060 (1H 0253+058, XRS 02522+060)[5].

Notes et références

(en) Cet article est partiellement ou en totalité issu de l’article de Wikipédia en anglais intitulé « 3C 75 » (voir la liste des auteurs).
  1. ↑ a et b (en) 3C 75 sur la base de données Simbad du Centre de données astronomiques de Strasbourg.
  2. ↑ a et b (en) « NASA/IPAC Extragalactic Database », Results for 3C 75 (consulté le ).
  3. ↑ a b et c (en) Robert Nemiroff & Jerry Bonnell, « Two Black Holes Dancing in 3C 75 », sur apod.nasa.gov, Astronomy Picture of the Day, (consulté le ).
  4. ↑ (en) Martin Gaskell, « Supermassive black holes: Together at last - Figure 1: Dual active galactic nuclei in the merging galaxy NGC 1128 », Nature Physics, vol. 10,‎ , p. 481–482 (DOI 10.1038/nphys3015, lire en ligne)
  5. ↑ (en) Wood KS, Meekins JF, Yentis DJ, Smathers HW, McNutt DP, Bleach RD, « The HEAO A-1 X-ray source catalog », Ap J Suppl Ser., vol. 56, no 12,‎ , p. 507–649 (DOI 10.1086/190992, Bibcode 1984ApJS...56..507W)

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