NGC 1376

NGC 1376
Image illustrative de l’article NGC 1376
La galaxie spirale NGC 1376
Données d’observation
(Époque J2000.0)
Constellation Éridan
Ascension droite (α) 03h 37m 05,9s[1]
Déclinaison (δ) −05° 02′ 34″ [1]
Magnitude apparente (V) 12,1[2]
12,8 dans la Bande B[2]
Brillance de surface 13,60 mag/am2[2]
Dimensions apparentes (V) 2,1′ × 1,9′[2]
Décalage vers le rouge +0,013850 ± 0,000009[1]
Angle de position 95°[2]

Localisation dans la constellation : Éridan

(Voir situation dans la constellation : Éridan)
Astrométrie
Vitesse radiale 4 152 ± 3 km/s [1]
Distance 59,12 ± 4,14 Mpc (∼193 millions d'al)[1]
Caractéristiques physiques
Type d'objet Galaxie spirale
Type de galaxie SA(s)cd[1] Sc[2] SA(s)cd[3]
Dimensions environ 21,80 kpc (∼71 100 al)[1]
Découverte
Découvreur(s) William Herschel[3]
Date [3]
Désignation(s) PGC 13352
MCG -1-10-11
IRAS 03346-0512[2]
Liste des galaxies spirales
modifier 

NGC 1376 est une galaxie spirale située dans la constellation de l'Éridan. Sa vitesse par rapport au fond diffus cosmologique est de 4 008 ± 10 km/s, ce qui correspond à une distance de Hubble de 59,1 ± 4,1 Mpc (∼193 millions d'al)[1]. Elle a été découverte par l'astronome germano-britannique William Herschel en 1785[3].

La classe de luminosité de NGC 1376 est III-IV et elle présente une large raie HI[1].

À ce jour, huit mesures non basées sur le décalage vers le rouge (redshift) donnent une distance de 36,710 ± 24,078 Mpc (∼120 millions d'al)[4], ce qui est à l'intérieur des valeurs de la distance de Hubble.


NGC 1376 par le télescope spatial Hubble.

Supernova

Trois supernovas ont été découvertes dans NGC 1376 : SN 1999go, SN 2003lo et SN 2011dx[5].

SN 1999go

Cette supernova a été découverte le par M. Papenkova et W. D. Li dans le cadre du programme LOSS (Lick Observatory Supernova Search) de l'observatoire Lick[6]. Le type de cette supernova n'a pas été déterminé[7].

SN 2003lo

Cette supernova a été découverte le par les astronomes amateurs américains Tim Puckett et Brian Kerns[8]. Cette supernova était de type IIn[9].

SN 2011dx

Cette supernova a été découverte le par l'astronome amateur sud africain Berto Monard[10]. Cette supernova était de type Ia[11].

Groupe de NGC 1417

NGC 1376 fait partie du groupe de NGC 1417 qui compte au moins 14 galaxies, dont NGC 1358, NGC 1417, NGC 1418, NGC 1441, NGC 1449, NGC 1451 et NGC 1453[12].

Notes et références

  1. ↑ a b c d e f g h et i (en) « Results for object NGC 1376 », 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 et d (en) Courtney Seligman, « Celestial Atlas Table of Contents, NGC 1376 » (consulté le ).
  4. ↑ « Your NED Search Results, Distance Results for NGC 1376 », sur ned.ipac.caltech.edu (consulté le )
  5. ↑ (en) « Central Bureau for Astronomical Telegrams » (consulté le )
  6. ↑ (en) « Central Bureau for Astronomical Telegrams, IAUC 7337: 1999go; 1999gp; 1999gq; V1494 Aql » (consulté le )
  7. ↑ (en) « Bright Supernovae - 1999 » (consulté le )
  8. ↑ (en) « Puckett Observatory » (consulté le )
  9. ↑ (en) « Bright Supernovae - 2003 » (consulté le )
  10. ↑ (en) « Berto Monard awarded 2004 Gill Medal » (consulté le )
  11. ↑ (en) « Bright Supernovae - 2011 » (consulté le )
  12. ↑ 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 1368  •  NGC 1369  •  NGC 1370  •  NGC 1371  •  NGC 1372  •  NGC 1373  •  NGC 1374  •  NGC 1375  •  NGC 1376  •  NGC 1377  •  NGC 1378  •  NGC 1379  •  NGC 1380  •  NGC 1381  •  NGC 1382  •  NGC 1383  •  NGC 1384

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