NGC 5333

NGC 5333
Image illustrative de l’article NGC 5333
La galaxie lenticulaire NGC 5333.
Données d’observation
(Époque J2000.0)
Constellation Centaure
Ascension droite (α) 13h 54m 24,2s[1]
Déclinaison (δ) −48° 30′ 45″ [1]
Magnitude apparente (V) 10,7[2]
11,7 dans la Bande B [2]
Brillance de surface 11,40 mag/am2[2]
Dimensions apparentes (V) 1,9′ × 1,0′[2]
Décalage vers le rouge 0,009180 ± 0,000150[1]
Angle de position 52°[2]

Localisation dans la constellation : Centaure

(Voir situation dans la constellation : Centaure)
Astrométrie
Vitesse radiale 2 752 ± 45 km/s [1]
Distance 43,82 ± 3,15 Mpc (∼143 millions d'al)[1]
Caractéristiques physiques
Type d'objet Galaxie lenticulaire
Type de galaxie SB0^0(r)?[1] SB-0/R[3] SB0[2] SB(r)0/a?[4]
Dimensions environ 25,40 kpc (∼82 800 al)[1],[a]
Découverte
Découvreur(s) John Herschel[4]
Date [4]
Désignation(s) PGC 49424
ESO 221-17[2]
Liste des galaxies lenticulaires
modifier 

NGC 5333 est une galaxie lenticulaire située dans la constellation du Centaure. Sa vitesse par rapport au fond diffus cosmologique est de 2 971 ± 48 km/s, ce qui correspond à une distance de Hubble de 43,8 ± 3,2 Mpc (∼143 millions d'al)[1]. NGC 5333 a été découverte par l'astronome britannique John Herschel en 1834.

À ce jour, quatre mesures non basées sur le décalage vers le rouge (redshift) donnent une distance de 27,500 ± 6,334 Mpc (∼89,7 millions d'al)[5], ce qui est à l'extérieur des valeurs de la distance de Hubble. Notons que c'est avec la valeur moyenne des mesures indépendantes, lorsqu'elles existent, que la base de données NASA/IPAC calcule le diamètre d'une galaxie et qu'en conséquence le diamètre de NGC 5333 pourrait être d'environ 40,5 kpc (∼132 000 al) si on utilisait la distance de Hubble pour le calculer.

Groupe de NGC 5266

Selon A. M. Garcia, NGC 5333 fait partie du groupe de NGC 5266. Ce groupe compte au moins huit galaxies. Les autres galaxies du groupe sont NGC 5266, NGC 5266A (PGC 48390), ESO 220-26, ESO 220-23, ESO 221-12, ESO 221-14 et ESO 221-22[6].

Notes et références

Notes

  1. ↑ Diamètre isophote du relevé ESO-LV Quick Blue"" IIa-O.

Références

  1. ↑ a b c d e f g et h (en) « Results for object NGC 5333 », NASA/IPAC Extragalactic Database (consulté le )
  2. ↑ a b c d e f et g « Les données de «Revised NGC and IC Catalog by Wolfgang Steinicke», NGC 5300 à 5399 », sur astrovalleyfield.com (consulté le )
  3. ↑ (en) « NGC 5333 sur HyperLeda » (consulté le )
  4. ↑ a b et c (en) Courtney Seligman, « Celestial Atlas Table of Contents, NGC 5333 » (consulté le ).
  5. ↑ « Your NED Search Results, Distance Results for NGC 5333 », sur ned.ipac.caltech.edu (consulté le )
  6. ↑ A.M. Garcia, « General study of group membership. II - Determination of nearby groups », Astronomy and Astrophysics Supplement Series, vol. 100 #1,‎ , p. 47-90 (Bibcode 1993A&AS..100...47G)

Voir aussi

Articles connexes

Liens externes

NGC 5325  •  NGC 5326  •  NGC 5327  •  NGC 5328  •  NGC 5329  •  NGC 5330  •  NGC 5331  •  NGC 5332  •  NGC 5333  •  NGC 5334  •  NGC 5335  •  NGC 5336  •  NGC 5337  •  NGC 5338  •  NGC 5339  •  NGC 5340  •  NGC 5341

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