New M92 stellar stream discovered

New M92 Stellar Stream Discovered
Residual map of the number of stars per pixel along the M92 stream. The residual was obtained by applying the matched-filter technics to the CFIS/PS1 data. The cyan line represents the center of the M92 stellar stream path. Image credits: CFIS team

A team of astronomers using the Canada-France-Hawaii Telescope discovered a new stellar stream emanating from the M92 globular cluster. This new stream suggests that M92 is actively being disrupted by tidal forces caused by our Milky Way Galaxy. This discovery utilized high quality data obtained as part of the Canada-France-Imaging-Survey (CFIS) using MegaCam at CFHT and from the Pan-STARRS 1 (PS1) survey on Haleakalā, Maui. The discovery of a stellar stream around M92 raises the question of the cluster’s origin and could be used in the future to probe the innermost region of our Galaxy. The team estimates that stellar stream has a mass equivalent to ~10% of

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