IC 5332
| Galaxie IC 5332 | |
|---|---|
 | |
| mit LEDA 132690 (ro) und 2MASX J23342871-3602117 (ru), Aufnahme des Gemini-Teleskops | |
| AladinLite | |
| Sternbild | Bildhauer |
| Position Äquinoktium: J2000.0, Epoche: J2000.0 | |
| Rektaszension | 23h 34m 27,49s[1] |
| Deklination | −36° 06′ 03,9″[1] |
| Erscheinungsbild | |
| Morphologischer Typ | SA(s)d[2] |
| Helligkeit (visuell) | 10,4 mag[2] |
| Helligkeit (B-Band) | 11,1 mag[2] |
| Winkelausdehnung | 8,9′ × 8,2′[2] |
| Positionswinkel | 159°[2] |
| Flächenhelligkeit | 14,9 mag/arcmin²[2] |
| Physikalische Daten | |
| Zugehörigkeit | IC 5332-Gruppe LGG 478 SSRS Gruppe 49[1][3] |
| Rotverschiebung | 0.002338 ± 0.000003[1] |
| Radialgeschwindigkeit | (701 ± 1) km/s[1] |
| Hubbledistanz H0 = 73 km/(s • Mpc) | (31 ± 2) · 106 Lj (9,54 ± 0,67) Mpc [1] |
| Durchmesser | 60.000 Lj[4] |
| Geschichte | |
| Entdeckung | Lewis Swift |
| Entdeckungsdatum | 19. November 1897 |
| Katalogbezeichnungen | |
| IC 5332 • PGC 71775 • ESO 408-9 • MCG -6-51-12 • IRAS IRAS F23318-3622 • 2MASX J23342748-3606038 • SGC 233148-3622.7 • 2MASS J23342739-3606049 • HIPASS • WISEA J233427.56-360603.7 J2334-36 | |
IC 5332 ist eine Spiralgalaxie vom Hubble-Typ SAcd mit aktivem Galaxienkern im Sternbild Bildhauer am Südsternhimmel. Sie ist schätzungsweise 31 Millionen Lichtjahre von der Milchstraße entfernt und hat einen Durchmesser von etwa 60.000 Lichtjahren.
Das Objekt wurde am 19. November 1897 von Lewis Swift entdeckt.[5]
Mithilfe des Hubble-Weltraumteleskops wurde die Galaxie hochaufgelöst abgebildet
Infrarotaufnahme mithilfe des James Webb-Weltraumteleskops. Die Staubverteilung in der Galaxie wird deutlich.
IC 5332-Gruppe (LGG 478)
| Galaxie | Alternativname | Entfernung/Mio. Lj |
|---|---|---|
| NGC 7713 | PGC 71866 | 31 |
| IC 5332 | PGC 71775 | 31 |
| PGC 72525 | ESO 348-09 | 28 |
Literatur
- König, Michael & Binnewies, Stefan (2019): Bildatlas der Galaxien: Die Astrophysik hinter den Astrofotografien, Stuttgart: Kosmos, S. 107
Weblinks
- CDS Portal
- SIMBAD Astronomical Database
- Herbert Walter: Amateuraufnahme in Spektrum.de vom 2. Februar 2023
- ‘S’ is for ‘Spiral’, ‘AB’ is for … ‘Weakly Barred’ (engl.)
Einzelnachweise
Auf dieser Seite verwendete Medien
Autor/Urheber: Judy Schmidt, Lizenz: CC BY 2.0
Dust lanes of IC5332. Processed in much the same way as NGC628. A visible / Hubble view of this galaxy is here:
Red (screen layer mode): MIRI F2100W Orange: MIRI F1130W Cyan: MIRI F770W
Extra overall brightness in grayscale: MIRI F1000W
This glittering image shows the spiral galaxy IC 5332, which lies about 30 million light-years away in the constellation Sculptor, and has an almost face-on orientation to Earth. To explain what is meant by ‘face-on’, it is helpful to visualise a spiral galaxy as an (extremely) large disc. If the galaxy is oriented so that it appears circular and disc-shaped from our perspective here on Earth, then we can say that it is ‘face-on’. In contrast, if it is oriented so that it appears squashed and oval-shaped, then we would say that it is ‘edge-on’. The key thing is that the same galaxy would look extremely different from our perspective depending on whether it was face-on or edge-on as seen from Earth. Check out these previous Hubble Pictures of the Week for examples of another face-on spiral galaxy and an almost edge-on spiral galaxy.
IC 5332 is designated as an SABc-type galaxy in the De Vaucouleurs system of galaxy classification. The ‘S’ is straightforward, identifying it as a spiral galaxy, which it clearly is, given the well-defined arms of bright stars and darker dust that curl outwards from the galaxy’s dense and bright core. The ‘AB’ is a little more complex. It means that the galaxy is weakly barred, which refers to the shape of the galaxy’s centre. The majority of spiral galaxies do not spiral out from a single point, but rather from an elongated bar-type structure. SAB galaxies — which are also known as intermediate spiral galaxies — do not have a clear bar-shape at their core, but also do not spiral out from a single point, instead falling somewhere in between. The lowercase ‘c’ describes how tightly wound the spiral arms are: ‘a’ would indicate very tightly wound, and ‘d’ very loosely wound. Thus, IC 5332 is quite an intermediate spiral galaxy on many fronts: weakly barred, with quite loosely wound arms, and almost completely face-on!
[Image Description: A close-in view of a spiral galaxy. It is seen face-on, showing itscircular shape and tightly winding spiral arms. The galaxy glows brightly in the centre and dims to cool colours towards the edge. Dark, faint filaments of dust and brightly glowing, pink and orange bubbles of star formation mark the face of the galaxy.]
Credit:
ESA/Hubble & NASA, R. Chandar, J. Lee and the PHANGS-HST teamAutor/Urheber: Credit: International Gemini Observatory, Lizenz: CC BY 4.0
A Graceful Spiral in a Blizzard of Galaxies
This stunning image shows the dynamic spiral galaxy IC 5332 in a field of view studded with smaller, more distant, galaxies. Popularly known as the Corsage Galaxy, IC 5332 displays beautifully symmetric spiral arms that unwind gracefully from a small and compact central bulge. Actually, IC 5332 features two main spiral arms that continually split into more feathery ones as they extend outwards. Pink “bubbles” of nebulous matter dot the arms. These are massive regions of glowing hydrogen gas and the sites of active star formation. The abundance of galaxies surrounding IC 5332 is a chance alignment with an assortment of more distant galaxies providing a extragalactic backdrop. Astronomers suspect that IC 5332 belongs to the Sculptor group of galaxies — one of the closest to our Local Group at a distance of about 10 million light years. Isobelle Teljega (a student at St. Margaret’s Anglican Girls School in the Brisbane suburb of Ascot, Queensland, Australia) suggested Gemini South take this image as part of her winning entry in the student division of Australia’s 2013 Gemini Astronomy Imaging Contest.