NGC 298
| Galaxie NGC 298 | |
|---|---|
.jpg) (c) ESA/Hubble, CC BY 4.0 | |
| Aufnahme von NGC 298 und NGC 297 mithilfe des Hubble-Weltraumteleskops | |
| AladinLite | |
| Sternbild | Walfisch |
| Position Äquinoktium: J2000.0, Epoche: J2000.0 | |
| Rektaszension | 00h 55m 02,3s[1] |
| Deklination | −07° 19′ 59″[1] |
| Erscheinungsbild | |
| Morphologischer Typ | Scd: / sp[1] |
| Helligkeit (visuell) | 13,8 mag[2] |
| Helligkeit (B-Band) | 14,5 mag[2] |
| Winkelausdehnung | 1,6′ × 0,5′[2] |
| Positionswinkel | 90°[2] |
| Flächenhelligkeit | 13,2 mag/arcmin²[2] |
| Physikalische Daten | |
| Zugehörigkeit | NGC 337-Gruppe LGG 15[1][3] |
| Rotverschiebung | 0,005857 ± 0,000010[1] |
| Radialgeschwindigkeit | (1756 ± 3) km/s[1] |
| Hubbledistanz H0 = 73 km/(s • Mpc) | (81 ± 6) · 106 Lj (24,8 ± 1,7) Mpc [1] |
| Durchmesser | 40.000 Lj[4] |
| Geschichte | |
| Entdeckung | Albert Marth |
| Entdeckungsdatum | 27. September 1864 |
| Katalogbezeichnungen | |
| NGC 298 • PGC 3250 • MCG -01-03-303 • IRAS F00525-0736 • 2MASX J00550234-0719591 • GC 5125 • HIPASS J0054-07 • USGC S030 NED01 | |
NGC 298 ist eine Spiralgalaxie vom Hubble-Typ Sbc im Sternbild Walfisch südlich der Ekliptik. Sie ist schätzungsweise 81 Millionen Lichtjahre von der Milchstraße entfernt und hat einen Durchmesser von etwa 40.000 Lichtjahren.
Im selben Himmelsareal befinden sich u. a. die Galaxien NGC 293 und NGC 297.
Die Typ-II-Supernova SN 1986K wurde hier beobachtet.[5]
Das Objekt wurde am 27. September 1864 von dem deutschen Astronomen Albert Marth entdeckt.[6]
Weblinks
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Hubble explores explosive aftermath in NGC 298 (potw2322a).jpg
(c) ESA/Hubble, CC BY 4.0
The spiral galaxy NGC 298 basks in this image from the NASA/ESA Hubble Space Telescope. NGC 298 lies around 89 million light-years away in the constellation Cetus, and appears isolated in this image — only a handful of distant galaxies and foreground stars accompany the lonely galaxy. While NGC 298 seems peaceful, in 1986 it was host to one of astronomy's most extreme events: a catastrophic stellar explosion known as a Type II supernova. Hubble’s Advanced Camera for Surveys captured NGC 298 as part of an investigation into the origins of Type II supernovae. All Type II supernovae are produced by the collapse and subsequent explosion of young, massive stars, but they can produce a spectacular diversity of brightnesses and spectral features. Astronomers suspect that the diversity of this cosmic firework show might be due to gas and dust being stripped from the stars that will eventually produce Type II supernovae. Observing the region surrounding supernova explosions can reveal traces of the progenitor star’s history preserved in this lost mass, as well as revealing any companion stars that survived the supernova. Hubble used the brief periods between scheduled observations to explore the aftermath of a number of Type II supernovae, hoping to piece together the relationship between Type II supernovae and the stellar systems which give rise to them.[Image description: A spiral galaxy. It is tilted diagonally, and slightly towards the viewer, making its core and disc separately visible. Its disc is speckled by small stars, has threads of dark reddish dust and bubbles of bright, glowing gas. The core shines brightly in a warmer colour. Several tiny stars and small galaxies are included in the black background.]
(c) ESA/Hubble, CC BY 4.0
The spiral galaxy NGC 298 basks in this image from the NASA/ESA Hubble Space Telescope. NGC 298 lies around 89 million light-years away in the constellation Cetus, and appears isolated in this image — only a handful of distant galaxies and foreground stars accompany the lonely galaxy. While NGC 298 seems peaceful, in 1986 it was host to one of astronomy's most extreme events: a catastrophic stellar explosion known as a Type II supernova. Hubble’s Advanced Camera for Surveys captured NGC 298 as part of an investigation into the origins of Type II supernovae. All Type II supernovae are produced by the collapse and subsequent explosion of young, massive stars, but they can produce a spectacular diversity of brightnesses and spectral features. Astronomers suspect that the diversity of this cosmic firework show might be due to gas and dust being stripped from the stars that will eventually produce Type II supernovae. Observing the region surrounding supernova explosions can reveal traces of the progenitor star’s history preserved in this lost mass, as well as revealing any companion stars that survived the supernova. Hubble used the brief periods between scheduled observations to explore the aftermath of a number of Type II supernovae, hoping to piece together the relationship between Type II supernovae and the stellar systems which give rise to them.[Image description: A spiral galaxy. It is tilted diagonally, and slightly towards the viewer, making its core and disc separately visible. Its disc is speckled by small stars, has threads of dark reddish dust and bubbles of bright, glowing gas. The core shines brightly in a warmer colour. Several tiny stars and small galaxies are included in the black background.]