The star Gaia17bpp began brightening again after a 7-year eclipse by a strange companion star drew to a close, indicating it exists in a rare binary system.
An artistic rending of the star Gaia17bpp being partially eclipsed by the dust cloud surrounding a smaller companion star.
Gaia's observations of Gaia17bpp only date back to 2014, so along with collaborator University of Washington assistant professor of astronomy and associate director of the, James Davenport, Tzanidakis had to do extra investigative legwork to solve the mystery of the star's behavior. This revealed to Tzanidakis and Davenport that the star had become 4,500 times dimmer over the course of 7 years between 2012 to 2019 and that the rapid brightening of Gaia17bpp marked the end of this period. program, a digital catalog of over 100 years of astrophotographic plates stored at Harvard University, to track the star's brightness since the 1950s. They found no similar periods of dimming for Gaia17bpp or other stars in its vicinity.
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