NGC 1382

NGC 1382
Image illustrative de l’article NGC 1382
La galaxie lenticulaire NGC 1382
Données d’observation
(Époque J2000.0)
Constellation Fourneau
Ascension droite (α) 03h 37m 08,9s[1]
Déclinaison (δ) −35° 11′ 42″ [1]
Magnitude apparente (V) 12,9[2]
13,9 dans la Bande B[2]
Brillance de surface 13,63 mag/am2[2]
Dimensions apparentes (V) 1,5′ × 1,3′[2]
Décalage vers le rouge +0,005804 ± 0,000057[1]
Angle de position 26°[2]

Localisation dans la constellation : Fourneau

(Voir situation dans la constellation : Fourneau)
Astrométrie
Vitesse radiale 1 740 ± 17 km/s [1]
Distance 24,26 ± 1,72 Mpc (∼79,1 millions d'al)[1]
Caractéristiques physiques
Type d'objet Galaxie lenticulaire
Type de galaxie SAB(s)0-[1]: E/SB0[2] E/S0?[3]
Dimensions environ 12,19 kpc (∼39 800 al)[1],[a]
Découverte
Découvreur(s) Julius Schmidt[3]
Date [3]
Désignation(s) PGC 13354
MCG -6-9-9
FCC 190
ESO 358-37[2]
Liste des galaxies lenticulaires
modifier 

NGC 1382 est une galaxie lenticulaire située dans la constellation du Fourneau. Sa vitesse par rapport au fond diffus cosmologique est de 1 645 ± 18 km/s, ce qui correspond à une distance de Hubble de 24,3 ± 1,7 Mpc (∼79,3 millions d'al)[1]. Elle a été découverte par l'astronome allemand Julius Schmidt en 1865[3].

À ce jour, neuf mesures non basées sur le décalage vers le rouge (redshift) donnent une distance de 18,856 ± 2,419 Mpc (∼61,5 millions d'al)[4], 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 1382 pourrait être d'environ 15,7 kpc (∼51 200 al) si on utilisait la distance de Hubble pour le calculer.

Groupe de NGC 1316

NGC 1382 fait partie du groupe de NGC 1316. Ce groupe est aussi membre de l'amas du Fourneau[3],[5] et il comprend au moins 20 galaxies, dont les galaxies IC 335, NGC 1310, NGC 1316, NGC 1317, NGC 1341, NGC 1350, NGC 1365, NGC 1380, NGC 1381, NGC 1382 et NGC 1404[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 1382 », 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 1300 à 1399 », sur astrovalleyfield.com (consulté le )
  3. ↑ a b c d et e (en) Courtney Seligman, « Celestial Atlas Table of Contents, NGC 1382 » (consulté le ).
  4. ↑ « Your NED Search Results, Distance Results for NGC 1382 », sur ned.ipac.caltech.edu (consulté le )
  5. ↑ « Richard Powell, «Les amas du Fourneau et de l'Éridan» »
  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 1374  •  NGC 1375  •  NGC 1376  •  NGC 1377  •  NGC 1378  •  NGC 1379  •  NGC 1380  •  NGC 1381  •  NGC 1382  •  NGC 1383  •  NGC 1384  •  NGC 1385  •  NGC 1386  •  NGC 1387  •  NGC 1388  •  NGC 1389  •  NGC 1390

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