This page describes an image The planet PDS 70b inside a protoplanetary disk
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Image caption:
An image of the planet PDS 70b. The young star PDS 70b has a protoplanetary disk surrounding it. Disks like these contains gas, fine sandy particles that astronomers refer to as dust and also larger bodies ranging from objects the size of pebbles to protoplanets (planets that are still forming).
This image was taken in infrared light using adaptive optics. Adaptive optics is a technique that uses flexible mirrors and computer analysis to remove the blurring effect of the Earth's atmosphere. This allows astronomers to search regions close to stars like PDS 70 that would otherwise be swamped by light from the star spread out by the Earth's atmosphere. In the center is a black circle. This is caused by a coronograph, a small circle that blocks out light from the parent star. This is surrounded by a bright oval, infrared light emitted from the material in the protoplanetary disk. To the right of the black circle covering the star is a bright dot. This is PDS 70b, a giant planet that is still forming .
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Image credit: ESO/ A. Müller, MPIA Credit Link
Related glossary terms:
Adaptive Optics
, Planet Formation
, Protoplanet
, Protoplanetary Disk
Categories:
Exoplanets & Astrobiology
Image license: Creative Commons Attribution 4.0 International (CC BY 4.0) Creative Commons Attribution 4.0 International (CC BY 4.0) icons
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Captions in Different Languages:
Image caption: Ein Bild des Planeten PDS 70b. Der junge Stern PDS 70b ist von einer protoplanetaren Scheibe umgeben. Scheiben wie diese enthalten Gas, feine sandige Partikel, die Astronomen als Staub bezeichnen, und auch größere Körper, von kieselsteingroßen Objekten bis hin zu Protoplaneten (Planeten, die sich noch im Entstehen befinden).
Dieses Bild wurde mit Hilfe einer adaptiven Optik im Infrarotlicht aufgenommen. Bei der adaptiven Optik handelt es sich um eine Technik, bei der flexible Spiegel und eine Computeranalyse eingesetzt werden, um die durch die Erdatmosphäre verursachte Bildunschärfe zu beseitigen. Dadurch können die Astronomen in der direkten Umgebung von Sternen wie PDS 70 nach Regionen suchen, die andernfalls vom Licht des Sterns, welches durch die Erdatmosphäre gestreut wird, überblendet würde. In der Mitte der Scheibe ist ein schwarzer Kreis zu sehen. Dieser wird durch einen Koronographen verursacht, einer kleinen Kreisscheibe, die das Licht des Muttersterns abblockt. Der Stern selbst ist von einem hellen Oval aus Infrarotlicht umgeben, das von dem Material der protoplanetaren Scheibe ausgestrahlt wird. Rechts neben dem schwarzen Kreis, der den Stern bedeckt, befindet sich ein heller Fleck. Dies ist PDS 70b, ein Riesenplanet, der sich noch in der Entstehung befindet.
Image credit: ESO/ A. Müller, MPIA
Related glossary terms: Adaptive Optik , Planetenentstehung , Protoplanet , Protoplanetare Scheibe Caption translation status: Not yet approved by a reviewer
Caption translators: Simon Kraus
Image caption: Un'immagine del pianeta PDS 70b. La giovane stella PDS 70b è circondata da un disco protoplanetario. Dischi come questo contengono gas, particelle sabbiose fini che gli astronomi chiamano polvere e anche corpi più grandi che vanno da oggetti grandi come sassolini a protopianeti (pianeti ancora in formazione).
Questa immagine è stata ripresa in luce infrarossa utilizzando l'ottica adattiva. L'ottica adattiva è una tecnica che utilizza specchi flessibili e analisi computerizzate per eliminare l'effetto di sfocatura dovuta all'atmosfera terrestre. Questo permette agli astronomi di cercare regioni vicine a stelle come PDS 70 che altrimenti sarebbero nascoste dalla luce della stella diffusa dall'atmosfera terrestre. Al centro c'è un cerchio nero. Questo è causato da un coronografo, un piccolo cerchio che blocca la luce della stella madre. Questo è circondato da un ovale luminoso, luce infrarossa emessa dal materiale del disco protoplanetario. A destra del cerchio nero che copre la stella c'è un punto luminoso. Si tratta di PDS 70b, un pianeta gigante che si sta ancora formando.
Image credit: ESO/ A. Müller, MPIA
Related glossary terms: Disco protoplanetario , Formazione dei pianeti , ottica adattiva , Protopianeta Caption translation status: Not yet approved by a reviewer
Caption translators: Francesco Salvestrini
