IC 5338
| Galaxie IC 5338 | |
|---|---|
 (c) Credit: ESA/Hubble & NASA, J. Dalcanton, Dark Energy Survey/DOE/FNAL/DECam/CTIO/NOIRLab/NSF/AURA, CC BY 4.0 | |
| Aufnahme mithilfe des Hubble-Weltraumteleskops von IC 5338 (o.) & IC 5337 (m.r.) | |
| AladinLite | |
| Sternbild | Pegasus |
| Position Äquinoktium: J2000.0, Epoche: J2000.0 | |
| Rektaszension | 23h 36m 30,433s[1] |
| Deklination | +21° 08′ 45,60″[1] |
| Erscheinungsbild | |
| Morphologischer Typ | cD/E?[1] |
| Helligkeit (visuell) | 14,0 mag[2] |
| Helligkeit (B-Band) | 15,0 mag[2] |
| Winkelausdehnung | 1,00′ × 0,7′[2] |
| Positionswinkel | 30°[2] |
| Flächenhelligkeit | 13,7 mag/arcmin²[2] |
| Physikalische Daten | |
| Zugehörigkeit | Abell 2626 WBL 719 IC 5338-Gruppe[1] |
| Rotverschiebung | 0.054628 ± 0.000097[1] |
| Radialgeschwindigkeit | (16.377 ± 29) km/s[1] |
| Hubbledistanz H0 = 73 km/(s • Mpc) | (739 ± 52) · 106 Lj (226,7 ± 15,9) Mpc [1] |
| Durchmesser | 220.000 Lj |
| Geschichte | |
| Entdeckung | Stéphane Javelle |
| Entdeckungsdatum | 25. November 1897 |
| Katalogbezeichnungen | |
| IC 5338 • UGC 12703 • PGC 71884 • CGCG 455-026 • MCG +03-60-013 • 2MASX J23363057+2108498 • GALEXASC J233630.44+210846.8 • NVSS J233630+210845 | |
IC 5338 ist eine cD-Galaxie vom Hubble-Typ E3, bestehend aus zwei Galaxiekernen, im Sternbild Pegasus am Nordsternhimmel. Sie ist schätzungsweise 739 Millionen Lichtjahre von der Milchstraße entfernt und hat einen Durchmesser von etwa 220.000 Lichtjahren. Vermutlich bildet sie gemeinsam mit IC 5337 ein gravitatives Galaxienpaar. Die Galaxie ist die hellste Galaxie des Galaxienhaufens Abell 2626.
Im selben Himmelsareal befinden sich u. a. die Galaxien NGC 7688, IC 5329, IC 5331, IC 5336.
Das Objekt wurde am 25. November 1897 von Stéphane Javelle entdeckt.[3]
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Einzelnachweise
Auf dieser Seite verwendete Medien
IC5337 IC5338 potw2312a.jpg
(c) Credit: ESA/Hubble & NASA, J. Dalcanton, Dark Energy Survey/DOE/FNAL/DECam/CTIO/NOIRLab/NSF/AURA, CC BY 4.0
The galaxy JW100 features prominently in this image from the NASA/ESA Hubble Space Telescope, with streams of star-forming gas dripping from the disc of the galaxy like streaks of fresh paint. These tendrils of bright gas are formed by a process called ram pressure stripping, and their resemblance to dangling tentacles has led astronomers to refer to JW100 as a‘jellyfish’ galaxy. It is located in the constellation Pegasus, over 800 million light-years away. Ram pressure stripping occurs when galaxies encounter the diffuse gas that pervades galaxy clusters. As galaxies plough through this tenuous gas it acts like a headwind, stripping gas and dust fromthe galaxy and creating the trailing streamers that prominently adorn JW100. The bright elliptical patches in the image are other galaxies in the cluster that hosts JW100. As well as JW100’s bright tendrils, this image also contains a remarkably bright area of diffuse light towards the top of this image which contains two bright blotches at its core. This is the core of IC 5338, the brightest galaxy in the galaxy cluster, known as a cD galaxy. It’s not unusual for cD galaxies to exhibit multiple nuclei, as they are thought to grow by consuming smaller galaxies, the nuclei of which can take a long time to be absorbed. The bright points of light studding its outer fringes are a rich population of globular clusters. This observation took advantage of the capabilities of Hubble’s Wide Field Camera 3, and is part of a sequence of observations designed to explore star formation in thetendrils of jellyfish galaxies. These tendrils represent star formation under extreme conditions, and could help astronomers understand the process of star formation elsewhere in the universe. [Image description: A thin spiral galaxy is seen edge-on in the lower right. Its bulge and arms are very bright, mixing reddish and bluish light. Patchy blue trails extend below it, resembling tentacles, made from star-forming regions. Six small, reddish elliptical galaxies are scattered around. A very large elliptical galaxy with two cores sits by the top of the frame.] Links First science paper in the Astrophysical Journal Second science paper in the Astrophysical Journal.
(c) Credit: ESA/Hubble & NASA, J. Dalcanton, Dark Energy Survey/DOE/FNAL/DECam/CTIO/NOIRLab/NSF/AURA, CC BY 4.0
The galaxy JW100 features prominently in this image from the NASA/ESA Hubble Space Telescope, with streams of star-forming gas dripping from the disc of the galaxy like streaks of fresh paint. These tendrils of bright gas are formed by a process called ram pressure stripping, and their resemblance to dangling tentacles has led astronomers to refer to JW100 as a‘jellyfish’ galaxy. It is located in the constellation Pegasus, over 800 million light-years away. Ram pressure stripping occurs when galaxies encounter the diffuse gas that pervades galaxy clusters. As galaxies plough through this tenuous gas it acts like a headwind, stripping gas and dust fromthe galaxy and creating the trailing streamers that prominently adorn JW100. The bright elliptical patches in the image are other galaxies in the cluster that hosts JW100. As well as JW100’s bright tendrils, this image also contains a remarkably bright area of diffuse light towards the top of this image which contains two bright blotches at its core. This is the core of IC 5338, the brightest galaxy in the galaxy cluster, known as a cD galaxy. It’s not unusual for cD galaxies to exhibit multiple nuclei, as they are thought to grow by consuming smaller galaxies, the nuclei of which can take a long time to be absorbed. The bright points of light studding its outer fringes are a rich population of globular clusters. This observation took advantage of the capabilities of Hubble’s Wide Field Camera 3, and is part of a sequence of observations designed to explore star formation in thetendrils of jellyfish galaxies. These tendrils represent star formation under extreme conditions, and could help astronomers understand the process of star formation elsewhere in the universe. [Image description: A thin spiral galaxy is seen edge-on in the lower right. Its bulge and arms are very bright, mixing reddish and bluish light. Patchy blue trails extend below it, resembling tentacles, made from star-forming regions. Six small, reddish elliptical galaxies are scattered around. A very large elliptical galaxy with two cores sits by the top of the frame.] Links First science paper in the Astrophysical Journal Second science paper in the Astrophysical Journal.
Coordinates
Position (RA): 23 36 26.66 Position (Dec): 21° 8' 43.50" Field of view: 2.70 x 2.26 arcminutes Orientation: North is 65.5° 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 V 606 nm Hubble Space Telescope WFC3 Optical I 814 nm Hubble Space Telescope WFC3 Optical H-alpha + N II 680 nm Hubble Space Telescope WFC3 Optical H-alpha 656 nm Hubble Space Telescope WFC3
.