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O Type Stars

All articles tagged with #o type stars

JWST Reveals Rare O-Type Star in Carina Nebula’s 'Treasure Chest' Globule
space1 month ago

JWST Reveals Rare O-Type Star in Carina Nebula’s 'Treasure Chest' Globule

The James Webb Space Telescope has captured a new image of the 'Treasure Chest' cometary globule in the Carina Nebula, revealing a cluster of approximately 70 newborn stars. The most massive of these is a rare O-type star, about 19 times the mass of the Sun. Located 7,500 light-years away, the cluster is estimated to be 1.3 million years old, though earlier estimates suggested it could be as young as 100,000 years. The globule’s distinctive shape is being sculpted by radiation and stellar winds from nearby massive stars, including Eta Carinae and the Trumpler 16 cluster. Over time, this external pressure will disperse the surrounding gas and dust, eventually exposing the hidden stars within.

Most Milky Way Runaway Stars Aren’t Born in Binaries, New Survey Finds
space8 months ago

Most Milky Way Runaway Stars Aren’t Born in Binaries, New Survey Finds

Spanish researchers using Gaia astrometry and the IACOB spectroscopic database analyzed 214 O-type runaway stars and found that most did not originate as binary companions; the fastest runaways tend to be single, while faster rotators are linked to binary-supernova ejections, indicating multiple ejection mechanisms. The study also identified 12 runaway binaries, including three X-ray binaries with neutron stars or black holes, underscoring complex pathways for how these stars leave their birthplaces and influence galactic evolution.