NGC 1947
| Galaxie NGC 1947 | |
|---|---|
 | |
| Aufnahme von NGC 1947 mittels Hubble-Weltraumteleskop | |
| AladinLite | |
| Sternbild | Schwertfisch |
| Position Äquinoktium: J2000.0, Epoche: J2000.0 | |
| Rektaszension | 05h 26m 47,6s[1] |
| Deklination | -63° 45′ 36″ [1] |
| Erscheinungsbild | |
| Morphologischer Typ | S0- pec / LINER [1][2] |
| Helligkeit (visuell) | 10,8 mag [2] |
| Helligkeit (B-Band) | 11,8 mag [2] |
| Winkelausdehnung | 3′ × 2,6′ [2] |
| Positionswinkel | 119° [2] |
| Flächenhelligkeit | 13,1 mag/arcmin² [2] |
| Physikalische Daten | |
| Rotverschiebung | 0.003669 ± 0.000080 [1] |
| Radialgeschwindigkeit | (1100 ± 24) km/s [1] |
| Hubbledistanz vrad / H0 | (40 ± 3) · 106 Lj (12,4 ± 0,9) Mpc [1] |
| Geschichte | |
| Entdeckung | James Dunlop |
| Entdeckungsdatum | 5. November 1826 |
| Katalogbezeichnungen | |
| NGC 1947 • PGC 17296 • ESO 085-087 • 2MASX J05264761-6345360 • SGC 052628-6348.1 • LDCE 0328 NED026 | |
NGC 1947 ist eine linsenförmige Galaxie vom Hubble-Typ E-S0 im Sternbild Dorado am Südsternhimmel. Sie ist schätzungsweise 40 Millionen Lichtjahre von der Milchstraße entfernt.
Das Objekt wurde am 5. November 1826 von dem Astronomen James Dunlop entdeckt.[3]
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Credit:
ESA/Hubble & NASA, D. Rosario
Acknowledgement: Leo Shatz, Lizenz: CC BY 4.0Faint Remnant Threads
This unusual lenticular galaxy, known as NGC 1947, has lost almost all the gas and dust from its signature spiral arms, which used to orbit around its centre. Discovered almost 200 years ago by James Dunlop, a Scottish-born astronomer who later studied the sky from Australia, NGC 1947 can only be seen from the southern hemisphere, in the constellation Dorado (The Dolphinfish).
Residing around 40 million light-years away from Earth, this galaxy shows off its structure by backlighting its remaining faint gas and dust disc with millions of stars. In this picture, taken with the NASA/ESA Hubble Space Telescope, the faint remnants of the galaxy’s spiral arms can still be made out in the stretched thin threads of dark gas encircling it. Without most of its star-forming material, it is unlikely that many new stars will be born within NGC 1947, leaving this galaxy to continue fading with time.
Credit:
ESA/Hubble & NASA, D. Rosario Acknowledgement: L. Shatz
Coordinates Position (RA): 5 26 48.10 Position (Dec): -63° 45' 43.77" Field of view: 2.03 x 2.29 arcminutes Orientation: North is 131.5° left of vertical
Colours & filters Band Wavelength Telescope Optical V 606 nm Hubble Space Telescope WFC3 Infrared H 1.6 μm Hubble Space Telescope WFC3.
