R Coronae Borealis star

[¦är kə¦rō‚nē ‚bȯr·ē′al·əs ‚stär]

(astrophysics)

A rare type of irregular variable star which has long periods of maximum brightness followed by a sudden, unpredictable reduction in brightness of several magnitudes, and a slower, sometimes erratic return to the original brightness.

References in periodicals archive ?

Recently astronomers used the European Southern Observatory's Very Large Telescope Interferometer to map two large, infrared-emitting smoke clouds as close as 30 astronomical units from RY Sagittarii, the second-brightest R Coronae Borealis star in the sky.

Stars that smoke

The stellar classes discussed in detail at the conference include R Coronae Borealis stars, extreme helium stars, Wolf-Rayet central stars of planetary nebulae, white dwarfs, and helium-rich subdwarf O and B stars.

Hydrogen-deficient stars; proceedings

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R alnifolia
R alnifolia
R and B
R and B
R and B
R and D
R and D
R and D
R and D
R and I
R and R
R and R
R antigen
R Ashman
R association
R aw
R Bjornstad
R Brian Lowry
R Browning
R Browning
R Browning
R Bruce Merrifield
R Bruce Merrifield
R Buckminster Fuller
R Buckminster Fuller
R center
R Coding Conventions
R corona borealis star
R corona borealis star
R corona borealis star
R Coronae Borealis star
R Coronae Borealis stars
R D'Oyly Carte
R D'Oyly Carte
R display
R E Lee
R E Lee
R E M
R E M
R E M
R F Scott
R F Scott
R factor
R factor
R factor
R factor
R factor
R factor plasmid
R factor plasmid
R factor plasmid
R factor, resistance factor
R factor, resistance factor
R factor, resistance factor
R factor, resistance factor
R factor, resistance factor
R factors
R from Python
R galaxy
R genes
R Gouverneur
R Hamilton Russell
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