NGC 5271

NGC 5271
Image illustrative de l’article NGC 5271
La galaxie spirale barrée NGC 5271.
Données d’observation
(Époque J2000.0)
Constellation Chiens de chasse
Ascension droite (α) 13h 41m 42,4s[1]
Déclinaison (δ) 30° 07′ 32″ [1]
Magnitude apparente (V) 14,1[2]
15,0dans la Bande B [2]
Brillance de surface 13,60 mag/am2[2]
Dimensions apparentes (V) 0,9′ × 0,7′[2]
Décalage vers le rouge 0,037035 ± 0,000011[1]
Angle de position 168°[2]

Localisation dans la constellation : Chiens de chasse

(Voir situation dans la constellation : Chiens de chasse)
Astrométrie
Vitesse radiale 11 103 ± 3 km/s [1]
Distance 167,16 ± 11,70 Mpc (∼545 millions d'al)[1]
Caractéristiques physiques
Type d'objet Galaxie spirale barrée
Type de galaxie S?[1] SBa/R[3] SBa[2] (R')SB(rs)bc?[4]
Dimensions environ 55,32 kpc (∼180 000 al)[1],[a]
Découverte
Découvreur(s) Édouard Stephan [4]
Date [4]
Désignation(s) PGC 48477
MCG 5-32-65
CGCG 161-120[2]
Liste des galaxies spirales barrées
modifier 

NGC 5271 est une vaste et lointaine galaxie spirale barrée située dans la constellation des Chiens de chasse. Sa vitesse par rapport au fond diffus cosmologique est de 11 333 ± 16 km/s, ce qui correspond à une distance de Hubble de 167 ± 12 Mpc (∼545 millions d'al)[1]. NGC 5271 a été découverte par l'astronome français Édouard Stephan en 1881.

Selon la base de données Simbad, NGC 5271 est une galaxie LINER, c'est-à-dire une galaxie dont le noyau présente un spectre d'émission caractérisé par de larges raies d'atomes faiblement ionisés[5].

Notes et références

Notes

  1. ↑ Diamètre isophote du relevé SDSS.

Références

  1. ↑ a b c d e f g et h (en) « Results for object NGC 5271 », 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 5200 à 5299 », sur astrovalleyfield.com (consulté le )
  3. ↑ (en) « NGC 5271 sur HyperLeda » (consulté le )
  4. ↑ a b et c (en) Courtney Seligman, « Celestial Atlas Table of Contents, NGC 5271 » (consulté le ).
  5. ↑ (en) « Simbad, NGC 5271 -- LINER-type Active Galaxy Nucleus », Simbad (consulté le )

Voir aussi

Articles connexes

Liens externes

NGC 5263  •  NGC 5264  •  NGC 5265  •  NGC 5266  •  NGC 5267  •  NGC 5268  •  NGC 5269  •  NGC 5270  •  NGC 5271  •  NGC 5272  •  NGC 5273  •  NGC 5274  •  NGC 5275  •  NGC 5276  •  NGC 5277  •  NGC 5278  •  NGC 5279

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