NGC 1003

NGC 1003
Galassia a spirale
NGC 1003 nelle immagini Pan-STARRS
Scoperta
ScopritoreWilliam Herschel
Data6 ottobre 1784 [1]
Dati osservativi
(epoca J2000)
CostellazionePerseo
Ascensione retta02h 39m 16.9s [2]
Declinazione40° 52′ 20″ [2][1]
Distanza30,94 milioni di a.l.
(9,486 Mpc) [2]
Magnitudine apparente (V)11,5 [3]

nella banda B: 12,0 [3]

Redshift+0,002081 ± 0,000002 [2]
Luminosità superficiale13,37
Angolo di posizione97° [3]
Velocità radiale624 ± 1 [2] km/s
Caratteristiche fisiche
TipoGalassia a spirale
ClasseSA(s)cd[2] Sc[3] SA(s)cd?[1]
Dimensioni63 000 a.l.
(19 320 [2] pc)
Altre designazioni
PGC 10052
MCG 7-6-50
UGC 2137
CGCG 539-69
IRAS 02360+4039 [3]
Mappa di localizzazione
NGC 1003
Categoria di galassie a spirale

NGC 1003 è una galassia a spirale situata sul bordo occidentale della costellazione di Perseo, a una distanza di circa 31 milioni di anni luce dalla nostra Via Lattea.[1]

Scoperta

La galassia è stata scoperta il 6 ottobre 1784 dall'astronomo britannico di origine tedesca William Herschel.[1]

Descrizione

NGC 1003 è stata utilizzata da Gérard de Vaucouleurs come esempio di tipo morfologico SAB(s:)d nel suo atlante di classificazione delle galassie.[4][5]

NGC 1003 ha una classe di luminosità III-IV e presenta una larga riga a 21 cm dell'idrogeno neutro.[2]

NGC 1003 vista dal Telescopio spaziale Hubble

Supernova

Il 9 settembre 1937, all'interno di NGC 1003 è stata scoperta la supernova SN 1937D dall'astrofisico statunitense di origine svizzera Fritz Zwicky. La supernova è stata classificata di tipo Ia.[6]

Gruppo di NGC 1023

NGC 1003 fa parte del Gruppo di NGC 1023 situato nel Superammasso della Vergine. Il gruppo comprende tra le altre le galassie NGC 891, NGC 925, NGC 949, NGC 959, NGC 1023, NGC 1058 e IC 239.[7]

Note

  1. ^ a b c d e (EN) Courtney Seligman, Celestial Atlas Table of Contents, NGC 1003, su cseligman.com. URL consultato il 4 ottobre 2024.
  2. ^ a b c d e f g h Results for object NGC 1003, su ned.ipac.caltech.edu, National Aeronautics and Space Administration / Infrared Processing and Analysis Center. URL consultato il 4 ottobre 2024.
  3. ^ a b c d e (FR) Les données de «Revised NGC and IC Catalog by Wolfgang Steinicke», NGC 1000 à 1099, su astrovalleyfield.ca. URL consultato il 4 ottobre 2024.
  4. ^ Gérard de Vaucouleurs' Atlas of Galaxies, NGC 1003
  5. ^ (EN) The Galaxy Morphology Website, NGC 1003, su kudzu.astr.ua.edu. URL consultato il 4 ottobre 2024.
  6. ^ (EN) TRANSIENT NAME SERVER, SN 1937D, su wis-tns.weizmann.ac.il. URL consultato il 4 ottobre 2024.
  7. ^ (EN) Neil Trentham e R. Brent Tully, Dwarf galaxies in the NGC 1023 Group, in Monthly Notices of the Royal Astronomical Society, vol. 398, n. 2, 11 settembre 2009, pp. 722-734, DOI:10.1111/j.1365-2966.2009.15189.x. URL consultato il 4 ottobre 2024.

Voci correlate

Altri progetti

Collegamenti esterni

New General Catalogue: NGC 1001  •  NGC 1002  •  NGC 1003  •  NGC 1004  •  NGC 1005
  Portale Astronomia

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