NGC 3808

Galaxie
NGC 3808
{{{Kartentext}}}
Die Galaxien NGC 3808 (rechts) und NGC 3808A (links) aufgenommen vom Hubble-Weltraumteleskop
AladinLite
Sternbild Löwe
Position
ÄquinoktiumJ2000.0, Epoche: J2000.0
Rektaszension 11h 40m 44,2s [1]
Deklination +22° 25′ 46″ [1]
Erscheinungsbild
Morphologischer Typ SAB(rs)c: / pec / HII[1]
Helligkeit (visuell) 13,4 mag[2]
Helligkeit (B-Band) 14,1 mag[2]
Winkel­ausdehnung 1,6′ × 0,9′[2]
Positionswinkel [2]
Inklination °
Flächen­helligkeit 13,6 mag/arcmin²[2]
Physikalische Daten
Zugehörigkeit [1]
Rotverschiebung 0.023726 ± 0.000100[1]
Radial­geschwin­digkeit 7113 ± 30 km/s[1]
Hubbledistanz
H0 = 73 km/(s • Mpc)
(316 ± 22) · 106 Lj
(96,9 ± 6,8) Mpc [1]
Absolute Helligkeit mag
Masse M
Durchmesser Lj
Metallizität [Fe/H] {{{Metallizität}}}
Geschichte
Entdeckung Wilhelm Herschel
Entdeckungsdatum 10. April 1785
Katalogbezeichnungen
NGC 3808 • UGC 6643 • PGC 36227 • CGCG 127-025S • MCG +04-28-21 • Arp 87 • VV 300a • GC 2497 • H III 338 • KCPG 297A • PRC D-19 • LDCE 0823 NED011

NGC 3808 ist eine Balken-Spiralgalaxie mit ausgedehnten Sternentstehungsgebieten vom Hubble-Typ SBc/P im Sternbild Löwe nördlich der Ekliptik. Sie ist schätzungsweise 316 Millionen Lichtjahre von der Milchstraße entfernt und hat einen Durchmesser von etwa 150.000 Lichtjahren. Gemeinsam mit PGC 36228 (NGC 3808A) bildet sie das wechselwirkende Galaxienpaar ARP 87 oder KPG 297.

Halton Arp gliederte seinen Katalog ungewöhnlicher Galaxien nach rein morphologischen Kriterien in Gruppen. Diese Galaxie gehört zu der Klasse Spiralgalaxien mit einem großen Begleiter hoher Flächenhelligkeit auf einem Arm (Arp-Katalog).

Im selben Himmelsareal befinden sich u. a. die Galaxien NGC 3832, NGC 3748, NGC 3754, NGC 3772.

Die Typ-IIP-Supernova SN 2013db wurde hier beobachtet.[3]

Das Objekt wurde am 10. April 1785 von dem deutsch-britischen Astronomen Wilhelm Herschel entdeckt.[4]

Literatur

  • Jeff Kanipe und Dennis Webb: The Arp Atlas of Peculiar Galaxies – A Chronicle and Observer´s Guide, Richmond 2006, ISBN 978-0-943396-76-7
Commons: NGC 3808 – Sammlung von Bildern, Videos und Audiodateien

Einzelnachweise

  1. a b c d e NASA/IPAC EXTRAGALACTIC DATABASE
  2. a b c d e SEDS: NGC 3808
  3. Simbad
  4. Seligman

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