The Sky Tonight

August 30, 2016

ALMA finds unexpected trove of gas around larger stars
Charlottesville VA (SPX) Aug 29, 2016
Astronomers using the Atacama Large Millimeter/submillimeter Array (ALMA) surveyed dozens of young stars - some Sun-like and others approximately double that size - and discovered that the larger variety have surprisingly rich reservoirs of carbon monoxide gas in their debris disks. In contrast, the lower-mass, Sun-like stars have debris disks that are virtually gas-free. This finding runs counter to astronomers' expectations, which hold that stronger radiation from larger stars should strip away ... read more

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