companion

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Related to Companion star: Binary star system

companion

Social medicine An individual with whom a person has a close personal relationship Examples Spouses, lovers, children, parents, friends, pets and others, who provide an individual with a sense of belonging and of being needed. See Companionship.
References in periodicals archive ?
For example, the observations of the remnant of Kepler's supernova in 1604 and the recent supernova PTF 11kx have shown evidence that the companion star is a red giant.
The gravity of neutron stars pulls surrounding material from companion stars onto them and, as this material falls towards the neutron star, it heats up and glows with X-rays.
Caption: An artist's illustration depicts a white dwarf siphoning gas from its companion star.
They found 55 baby stars in 24 multiple-star systems, and all but five of them had companion stars.
The white dwarf component of a binary system slowly and relentlessly sips up the stellar material of its companion star.
In this report I would like to present a LC of the companion star that supports evidence for the expected tidal forces and will report on short period irregularities observed in the continuity of the LC.
Its companion star is a much bigger red giant that is nearing the end of its life and getting ready to explode.
However it is near a larger companion star that appears to be coming to the end of its life.
Material can be seen being dragged towards the black hole from the companion star and swirling round as it disappears like water down a drain.
The phenomenon is created when the intense pressure of light from WR104 blows particles off a nearby companion star.
Since the companion star could in neither case be seen, Bessel proposed that they were stars near the end of their lives, with their light fading toward extinction, and were now too dim to see.
They had witnessed a classical nova--the outburst of a white dwarf in a close binary system that has collected too much hydrogen from its companion star.