interstellar bubble

interstellar bubble

(in-ter-stell -er) A large cavity in the distribution of gas in and near the plane of our Galaxy. The bubble is blown by the winds of multiple supernovae from the most massive (and hence shortest-lived) stars in a stellar cluster or association. The bubble is usually filled with coronal gas and is delineated by swept-up filaments and clouds of denser gas.
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Among the topics are gravitational wave foreground radiation from neutron star-dwarf binaries, the chromospheric activity of late-type stars of the different rotational periods, spectrophotometry and model atmosphere flux fitting, the light-time effect and tertiary companions in close binary stars, the age of the local interstellar bubble, and the current status and outreach activities of radio astronomy in Malaysia.
Thus, a delicate and beautiful shell emerges around the star, producing a new type of nebula: the interstellar bubble.
This interstellar bubble energized by a Wolf-Rayet star is located in Canis Major, near the center of the triangle formed by M46, M50, and Sirius.

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