Colossal Star tagged posts

Stellar Surf’s up: Monster Waves as tall as Three Suns are Crashing upon a Colossal Star

Artist conception of the system, where the smaller star induces breaking surface waves in the more massive companion.
Credit: Melissa Weiss, CfA

An extreme star system is giving new meaning to the phrase “surf’s up.”

The star system intrigued researchers because it is the most dramatic “heartbeat star” on record. Now new models have revealed that titanic waves, generated by tides, are repeatedly breaking on one of the stars in the system—the first time this phenomenon has ever been seen on a star.

Heartbeat stars are stars in close pairs that periodically pulse in brightness, like the rhythm of a beating heart on an EKG machine. The stars in heartbeat systems loop through elongated oval orbits. Whenever they swing close together, the stars’ gravities generate tides—just as the Moon creates ocean tides on Earth...

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