NGC 1483
| Galaxie NGC 1483 | |
|---|---|
 (c) ESA/Hubble & NASA, CC BY 4.0 | |
| Hubble-Weltraumteleskop | |
| AladinLite | |
| Sternbild | Pendeluhr |
| Position Äquinoktium: J2000.0, Epoche: J2000.0 | |
| Rektaszension | 03h 52m 47,64s[1] |
| Deklination | −47° 28′ 39,1″[1] |
| Erscheinungsbild | |
| Morphologischer Typ | SB(s)c[1] |
| Helligkeit (visuell) | 12,3 mag[2] |
| Helligkeit (B-Band) | 13,1 mag[2] |
| Winkelausdehnung | 1,6′ × 1,4′[2] |
| Positionswinkel | 125°[2] |
| Flächenhelligkeit | 13,0 mag/arcmin²[2] |
| Physikalische Daten | |
| Zugehörigkeit | NGC 1433-Gruppe NGC 1493-Gruppe LGG 106[1][3] |
| Rotverschiebung | 0,003833 ± 0,000003[1] |
| Radialgeschwindigkeit | (1149 ± 1) km/s[1] |
| Hubbledistanz H0 = 73 km/(s • Mpc) | (44 ± 3) · 106 Lj (13,6 ± 1,0) Mpc [1] |
| Geschichte | |
| Entdeckung | James Dunlop |
| Entdeckungsdatum | 2. September 1826 |
| Katalogbezeichnungen | |
| NGC 1483 • PGC 14022 • ESO 201-007 • IRAS 03512-4737 • 2MASX J03524760-4728390 • SGC 035116-4737.5 • GC 788 • h 2595 • HIPASS J0352-47 • LDCE 266 NED013 | |
NGC 1483 ist eine spiralförmige Zwerggalaxie vom Hubble-Typ SBbc im Sternbild Horologium am Südsternhimmel. Sie ist schätzungsweise 44 Millionen Lichtjahre von der Milchstraße entfernt und hat einen Durchmesser von etwa 20.000 Lichtjahren. Gemeinsam mit fünf weiteren Galaxien ist sie Mitglied der NGC 1493-Gruppe (LGG 106).
Das Objekt wurde am 2. September 1826 von James Dunlop entdeckt.[4]
Weblinks
- SIMBAD Astronomical Database
- Galaxies' El Dorado (engl.)
- astronews.com: Bild des Tages 5. März 2012
Einzelnachweise
Auf dieser Seite verwendete Medien
(c) ESA/Hubble & NASA, CC BY 4.0
Galaxies' El Dorado
The NASA/ESA Hubble Space Telescope has produced this beautiful image of the galaxy NGC 1483. NGC 1483 is a barred spiral galaxy located in the southern constellation of Dorado — the dolphinfish in Spanish. The nebulous galaxy features a bright central bulge and diffuse arms with distinct star-forming regions. In the background, many other distant galaxies can be seen.
The constellation Dorado is home to the Dorado Group of galaxies, a loose group comprising an estimated 70 galaxies and located some 62 million light-years away. The Dorado group is much larger than the Local Group that includes the Milky Way (and which contains around 30 galaxies) and approaches the size of a galaxy cluster. Galaxy clusters are the largest groupings of galaxies (and indeed the largest structures of any type) in the Universe to be held together by their gravity.
Barred spiral galaxies are so named because of the prominent bar-shaped structures found in their centre. They form about two thirds of all spiral galaxies, including the Milky Way. Recent studies suggest that bars may be a common stage in the formation of spiral galaxies, and may indicate that a galaxy has reached full maturity.
Colours & filters Band Wavelength Telescope Optical B 435 nm Hubble Space Telescope ACS Optical B+I Hubble Space Telescope ACS Infrared I 814 nm Hubble Space Telescope
ACS