Now-Dead Radio Telescope Finds Bizarre Venomous-Spider Star
upstart writes in with an IRC submission for aristarchus:
Now-dead radio telescope finds bizarre venomous-spider star:
Astronomers have discovered black widows and redbacks in space. While these cosmic objects don't kill and eat their mates, the stars share their eight-legged counterparts' violent behavior toward companions.
In addition to the run-of-the-mill spider stars, the researchers also discovered a bizarre black widow-redback crossbreed. The scientists used the now-destroyed Arecibo telescope in Puerto Rico to discover the weirdo stars.
[...] In a new paper, researchers identify three new black widows and a redback in the Milky Way. They also found a spider star that defies categorization, almost like a crossbreed of the two species.
When a spider star has reduced its companion to significantly less than a tenth the mass of the sun (usually 0.02 to 0.03 times the sun's mass), that star is called a black widow. Redbacks have heftier companions that boast more than a tenth of the sun's mass. These binary companions of redbacks pass between the spider star and Earth periodically, creating temporary eclipses. The shriveled companions of black widows don't typically pull off that trick.
[...] The seeming crossbreed star is difficult to categorize. For now, researchers have labeled it a redback because its companion sometimes eclipses its ticking light. And that companion has a mass at least 0.055 times the mass of the sun (possibly larger), which would be quite heavy for a black widow, though quite light for a redback. For now, the exact mechanisms of that system are still a mystery.
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