Ficheiro:Planets in the Making.jpg

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Resumo

Descrición
English: Our Solar System formed out of a huge, primordial cloud of gas and dust. The vast majority of that cloud formed the Sun, while the leftover disc of rotating material around it eventually coalesced into the orbiting planets we know — and live on — today.

Astronomers can observe similar processes happening around other stars in the cosmos. This splendid Picture of the Week shows a disc of rotating, leftover material surrounding the young star HD 163296. Using the observing power of the Atacama Large Millimeter/submillimeter Array (ALMA) in Chile, astronomers have been able to discern specific features in the disc, including concentric rings of material surrounding the central star. They were even able to use ALMA to obtain high-resolution measurements of the gas and dust constituents of the disc. With these data they could infer key details of the formation history of this young stellar system.

The three gaps between the rings are likely due to a depletion of dust and in the middle and outer gaps astronomers also found a lower level of gas. The depletion of both dust and gas suggests the presence of newly formed planets, each around the mass of Saturn, carving out these gaps on their brand new orbits.
Data
Orixe https://www.eso.org/public/images/potw1652a/; see original posting at https://www.almaobservatory.org/en/images/star-hd-163296/ and https://public.nrao.edu/news/2016-alma-planets-disk/#PRimageSelected
Autoría ALMA (ESO/NAOJ/NRAO); A. Isella; B. Saxton (NRAO/AUI/NSF)

Licenza

w:gl:Creative Commons
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w:gl:Creative Commons
recoñecemento
Este ficheiro está licenciado baixo a licenza Creative Commons recoñecemento 4.0 internacional.
Recoñecemento:
ALMA (ESO/NAOJ/NRAO); A. Isella; B. Saxton (NRAO/AUI/NSF)
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Pés de foto

Engade unha explicación dunha liña do que representa este ficheiro

Elementos retratados neste ficheiro

representa a

HD 163296

tamanho dos dados portugués

245.565 Byte

altura

2.000 píxel

ancho

2.000 píxel

suma de verificación

66a7cf2b4917e21c449287c9654be52fbf71e718

método de determinación: SHA-1

Historial do ficheiro

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actual10 de agosto de 2019 ás 08:19Miniatura da versión ás 08:19 do 10 de agosto de 20192.000 × 2.000 (240 kB)wikimediacommons>BevinKaconactual size from ESO original source

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