NGC 1808

Galaxie
NGC 1808
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Aufnahme mithilfe des Víctor M. Blanco Telescope
AladinLite
SternbildTaube
Position
ÄquinoktiumJ2000.0, Epoche: J2000.0
Rektaszension05h 07m 42,3s [1]
Deklination−37° 30′ 47″ [1]
Erscheinungsbild
Morphologischer Typ(R'_1)SAB(s:)b Sy2[1]
Helligkeit (visuell)9,9 mag[2]
Helligkeit (B-Band)10,8 mag[2]
Winkel­ausdehnung6,5′ × 3,9′[2]
Positionswinkel133°[2]
Inklination°
Flächen­helligkeit13,3 mag/arcmin²[2]
Physikalische Daten
ZugehörigkeitNGC-1808-Gruppe, LGG 127[1][3]
Rotverschiebung0.003339 ± 0.000013[1]
Radial­geschwin­digkeit(1001 ± 4) km/s[1]
Hubbledistanz
H0 = 73 km/(s • Mpc)
(37 ± 3) · 106 Lj
(11,4 ± 0,8) Mpc [1]
Absolute Helligkeitmag
MasseM
Durchmesser70.000 Lj[4]
Metallizität [Fe/H]{{{Metallizität}}}
Geschichte
EntdeckungJames Dunlop
Entdeckungsdatum10. Mai 1826
Katalogbezeichnungen
NGC 1808 • PGC 16779 • ESO 305-008 • MCG -06-12-05 • IRAS 05059-3734 • 2MASX J05074234-3730469 • SGC 050559-3734.6 • AM 0505-373 • GC 1021 • h 2740 • Dun 549 • LDCE 0384 NED002

NGC 1808 ist eine Balkenspiralgalaxie im Sternbild Taube, die etwa 37 Millionen Lichtjahre von der Milchstraße entfernt ist. NGC 1808 ist eine Starburstgalaxie mit heftiger Sternentstehung in ihrem Zentralbereich.

Das Objekt wurde am 10. Mai 1826 von dem schottischen Astronomen James Dunlop entdeckt.[5]

NGC 1808-Gruppe (LGG 127)

GalaxieAlternativnameEntfernung / Mio. Lj
NGC 1808PGC 1677937
NGC 1792PGC 1670946
NGC 1827PGC 1684938
PGC 16790ESO 305-938
PGC 16976ESO 305-1740
PGC 17027ESO 362-1152
PGC 17157ESO 362-1950

Einzelnachweise

  1. a b c d e NASA/IPAC EXTRAGALACTIC DATABASE
  2. a b c d e SEDS: NGC 1808
  3. VizieR
  4. NASA/IPAC
  5. Seligman

Auf dieser Seite verwendete Medien

NGC 1808 HST 9788 06 ACS 06872 01 wfpc R658N G B814.png
Autor/Urheber: Fabian RRRR, Lizenz: CC BY-SA 3.0
Color rendering is done by by Aladin-software (2000A&AS..143...33B.)
The Many Layers of NGC 1808 (iotw2320a).jpg
Autor/Urheber: Dark Energy Survey/DOE/FNAL/DECam/CTIO/NOIRLab/NSF/AURA, Lizenz: CC BY 4.0
NGC 1808 is a barred spiral galaxy located in the southern constellation Columba (the dove). This image was captured using the Dark Energy Camera (DECam), which is mounted on the Víctor M. Blanco 4-meter Telescope at Cerro Tololo Inter-American Observatory (CTIO), a Program of NSF’s NOIRLab, in Chile. The core of NGC 1808 is thought to house a supermassive black hole, characterized by its accretion of material and higher-than-normal brightness. The smoldering center is closely surrounded by a faint blue ring populated with star clusters and supernova remnants. This region is defined by its starburst activity, producing an exceptional number of hot, bright, young stars. The abundance of rapid star formation is thought to be the result of past tidal interactions with the nearby galaxy NGC 1792. Laced throughout this middle region of NGC 1808 are dark dust lanes resulting from large outflows of hydrogen gas from the galactic nucleus. The softly glowing outer arms surrounding the galaxy are slightly warped, again pointing to tidal interactions with NGC 1792. Such an interaction could have created the asymmetrical shape of NGC 1808 and hurled gas towards the nucleus, igniting the rapid star formation in its surrounding ring.You can find a square view of this Image of the Week here.Image processing: R. Colombari and M. Zamani (NSF’s NOIRLab)
NGC 1808HSTCenter.jpg
The Center of NGC 1808