IC 1954
| Galaxie IC 1954 | |
|---|---|
 | |
| IC 1954, Aufnahme des Hubble-Weltraumteleskops | |
| AladinLite | |
| Sternbild | Pendeluhr |
| Position Äquinoktium: J2000.0, Epoche: J2000.0 | |
| Rektaszension | 03h 31m 31,39s[1] |
| Deklination | −51° 54′ 17,4″[1] |
| Erscheinungsbild | |
| Morphologischer Typ | SA(s)c[1] |
| Helligkeit (visuell) | 11,4 mag[2] |
| Helligkeit (B-Band) | 12,2 mag[2] |
| Winkelausdehnung | 3,00 × 1,5[2] |
| Positionswinkel | 66°[2] |
| Flächenhelligkeit | 12,9 mag/arcmin²[2] |
| Physikalische Daten | |
| Zugehörigkeit | SSRS Gruppe 13 IC 1954-Gruppe LGG 93[1][3] |
| Rotverschiebung | 0,003542 ± 0,000007[1] |
| Radialgeschwindigkeit | (1062 ± 2) km/s[1] |
| Hubbledistanz H0 = 73 km/(s • Mpc) | (41 ± 3) · 106 Lj (12,5 ± 0,9) Mpc [1] |
| Geschichte | |
| Entdeckung | Robert Innes |
| Entdeckungsdatum | 1898 |
| Katalogbezeichnungen | |
| IC 1954 • PGC 13090 • ESO 033006-5204.4 • IRAS 03300-5204 • 2MASX J03313139-5154175 • SGC 033006-5204.4 • GALEXASC J033131.29-515417.9 • HIPASS J0331-51 • LDCE 266 NED006 | |
IC 1954 ist eine Balken-Spiralgalaxie vom Hubble-Typ SBb im Sternbild Pendeluhr am Südsternhimmel. Sie ist schätzungsweise 41 Millionen Lichtjahre von der Milchstraße entfernt und hat einen Durchmesser von etwa 20.000 Lichtjahren. Gemeinsam mit vier weiteren Galaxien bildet sie die IC 1954-Gruppe (LGG 93).
Im selben Himmelsareal befinden sich u. a. die Galaxien IC 1946, IC 1957, IC 1958, IC 1966.
Das Objekt wurde im Jahr 1898 von Robert Innes entdeckt.[4]
IC 1954-Gruppe (LGG 93)
| Galaxie | Alternativname | Entfernung/Mio. Lj |
|---|---|---|
| NGC 1249 | PGC 11836 | 41 |
| NGC 1311 | PGC 12460 | 19 |
| IC 1933 | PGC 12807 | 41 |
| IC 1954 | PGC 13090 | 41 |
| IC 1959 | PGC 13163 | 22 |
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Autor/Urheber: (Credit) ESA/Hubble & NASA, J. Lee and the PHANGS-HST Team, Lizenz: CC BY 4.0
Portrait of a Swirling Galaxy
The spiral galaxy IC 1954 takes centre stage in this image from the NASA/ESA Hubble Space Telescope. The galaxy, which lies approximately 45 million light-years from Earth in the constellation Horologium (The Clock), boasts a bright central bar and lazily winding spiral arms threaded with dark clouds of dust.
This portrait of IC 1954 was captured with Hubble’s Wide Field Camera 3, and is one of a set of observations designed to take advantage of some telescope teamwork. Hubble observed groups of young stars in nearby galaxies at ultraviolet and optical wavelengths while the Atacama Large Millimeter/submillimeter Array — a ground-based radio telescope — gathered data on star-forming discs and clouds of cold gas. Combining the two sets of observations allowed astronomers to join the dots and understand the connections between young stars and the clouds of cold gas which give rise to them.
These observations also lay the groundwork for future observations with the upcoming NASA/ESA/CSA James Webb Space Telescope, which will peer into nearby galaxies and observe the earliest phases of star formation.
Credit:
ESA/Hubble & NASA, J. Lee and the PHANGS-HST Team
Coordinates Position (RA): 3 31 31.56 Position (Dec): -51° 54' 14.91" Field of view: 2.69 x 2.57 arcminutes Orientation: North is 286.2° right of vertical Colours & filters Band Wavelength Telescope Ultraviolet UV 275 nm Hubble Space Telescope WFC3 Optical U 336 nm Hubble Space Telescope WFC3 Optical B 438 nm Hubble Space Telescope WFC3 Optical V 555 nm Hubble Space Telescope WFC3 Optical I 814 nm Hubble Space Telescope WFC3.