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    49 Ceti tagged posts

    Massive Gas Disk raises questions about Planet Formation Theory

    December 25, 2019, Categories  Astronomy/Space

    20191223_Higuchi_49Ceti_ALMA_separated_E
    ALMA image of the debris disk around the young star 49 Ceti. The distribution of dust is shown in red; the distribution of carbon monoxide is shown in green; and the distribution of carbon atoms is shown in blue.
    Credit: ALMA (ESO/NAOJ/NRAO), Higuchi et al.

    Astronomers using the Atacama Large Millimeter/submillimeter Array (ALMA) found a young star surrounded by an astonishing mass of gas. The star, called 49 Ceti, is 40 million years old and conventional theories of planet formation predict that the gas should have disappeared by that age. The enigmatically large amount of gas requests a reconsideration of our current understanding of planet formation.

    Planets are formed in gaseous dusty disks called protoplanetary disks around young stars...

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