Ondas misteriosas na nossa galáxia

Posted on outubro 14, 2015

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Using images from ESO’s Very Large Telescope and the NASA/ESA Hubble Space Telescope, astronomers have discovered fast-moving wave-like features in the dusty disc around the nearby star AU Microscopii. These odd structures are unlike anything ever observed, or even predicted, before now. The top row shows a Hubble image of the AU Mic disc from 2010, the middle row Hubble from 2011 and the bottom row VLT/SPHERE data from 2014. The black central circles show where the brilliant light of the central star has been blocked off to reveal the much fainter disc, and the position of the star is indicated schematically. The scale bar at the top of the picture indicates the diameter of the orbit of the planet Neptune in the Solar System (60 AU). Note that the brightness of the outer parts of the disc has been artificially brightened to reveal the faint structure.

Using images from ESO’s Very Large Telescope and the NASA/ESA Hubble Space Telescope, astronomers have discovered fast-moving wave-like features in the dusty disc around the nearby star AU Microscopii. These odd structures are unlike anything ever observed, or even predicted, before now. The top row shows a Hubble image of the AU Mic disc from 2010, the middle row Hubble from 2011 and the bottom row VLT/SPHERE data from 2014. The black central circles show where the brilliant light of the central star has been blocked off to reveal the much fainter disc, and the position of the star is indicated schematically. The scale bar at the top of the picture indicates the diameter of the orbit of the planet Neptune in the Solar System (60 AU). Note that the brightness of the outer parts of the disc has been artificially brightened to reveal the faint structure.

Usando imagens de Very Large Telescope do ESO eo Telescópio da NASA / ESA Hubble, os astrônomos descobriram características wave-like fast-móveis no disco empoeirado em torno da estrela próxima AU Microscopii. As imagens acima mostram o movimento dos ondulações ao longo de quatro anos.naturewordreport

Este vídeo leva o telespectador a partir de uma visão ampla de todo o sul da Via Láctea em um close up da estrela próxima AU Microscopii, cerca de 32 anos-luz da Terra. Esta estrela é jovem e cercado por um disco empoeirado que apresenta wave-like, movendo-se rapidamente características ímpares que não são totalmente compreendidos.

Mais informações e download opções: http: //www.eso.org/public/videos/eso1 …

Crédito: ESO / Digitized Sky Survey 2 / N. Risinger (skysurvey.org)
Música: Johan Monell

 

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