19
Jun 16

ALMA Observes Most Distant Oxygen Ever

Source: ESO Science Release eso1620

eso1620aSchematic diagram of the history of the Universe.
Image credits: NAOJ.

A team of astronomers has used the Atacama Large Millimeter/submillimeter Array (ALMA) to detect glowing oxygen in a distant galaxy seen just 700 million years after the Big Bang. This is the most distant galaxy in which oxygen has ever been unambiguously detected, and it is most likely being ionised by powerful radiation from young giant stars. This galaxy could be an example of one type of source responsible for cosmic reionisation in the early history of the Universe. (learn more)

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19
Jun 16

TW Hya Association: Smaller Stars Pack Big X-ray Punch For Would-be Planets

Source: Chandra

Black Seed_images_allTW Hya Association.
Image credits: X-ray: NASA/CXC/RIT/J.Kastner et al; Illustration: NASA/CXC/M.Weiss.

 Young stars much less massive than the Sun can unleash a torrent of X-ray radiation that can significantly shorten the lifetime of planet-forming disks surrounding these stars. This result comes from a new study of a group of nearby stars using data from NASA's Chandra X-ray Observatory and other telescopes.(learn more)

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