IC 2220

Reflexionsnebel
IC 2220
Aufnahme des Very Large Telescopes, die die charakteristische Bogenstruktur des Nebels zeigt
Aufnahme des Very Large Telescopes, die die charakteristische Bogenstruktur des Nebels zeigt
Sternbild Kiel des Schiffs
Position
Äquinoktium: J2000.0
Rektaszension 07h 56m 51,3s[1]
Deklination −59° 07′ 31″[1]
Weitere Daten
Winkelausdehnung

5[2]

Entfernung

1419 ± 32 Lj[3]

Zentralstern

HR 3126, HD 65750 (V 341 Car)

Geschichte
Entdeckung

DeLisle Stewart

Datum der Entdeckung

30. März 1900

Katalogbezeichnungen
IC 2220 • ESO 124-3 • AM 0755-585
AladinLite

IC 2220 ist ein 1400 Lichtjahre entfernter Reflexionsnebel im Sternbild Kiel des Schiffs, der in dem Index-Katalog verzeichnet ist. Das Objekt wurde am 30. März 1900 von DeLisle Stewart entdeckt.[4]

Der Reflexionsnebel besteht aus einer Wolke aus Gas und Staub, die von innen heraus durch den Stern HD 65750 beleuchtet wird. Der Stern gehört zum Typ der Roten Riesen und besitzt die fünffache Masse unserer Sonne. Obwohl er mit seinen 50 Millionen Jahren vergleichsweise jung ist, befindet er sich in einem deutlich fortgeschrittenen Stadium seines Lebens. In dieser Phase verliert der Stern kontinuierlich einen Teil seiner Masse an die Umgebung. Dieses Material kühlt sich ab und bildet die Gas- und Staubwolke. Der Staub besteht dabei aus Elementen wie Kohlenstoff und einfachen, hitzeresistenten Molekülen wie Titandioxid und Calciumoxid. Für IC 2220 haben detaillierte Untersuchungen des Objekts im Infrarotlicht gezeigt, dass Siliziumdioxid wohl der Bestandteil ist, der am wahrscheinlichsten für die Reflexion des Sternlichts verantwortlich ist.[3]

Literatur

  • König, Michael & Binnewies, Stefan (2023): Bildatlas der Sternhaufen & Nebel, Stuttgart: Kosmos, S. 386

Einzelnachweise

  1. IC 2220. In: SIMBAD. Centre de Données astronomiques de Strasbourg;}
  2. SEDS: IC 2220
  3. a b Unter die Lupe genommen: Der Toby-Jug-Nebel In: ESO Press Release. Abgerufen am 19. Oktober 2013 
  4. Courtney Seligman: Index Catalog Objects: IC 2200 - 2249. In: Celestial Atlas. 18. Juni 2021, abgerufen am 7. November 2024.

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