Properties of circumstellar grains in R coronae borealis

Details Properties of circumstellar grains in R coronae borealis Properties of circumstellar grains in R coronae borealis

Nov 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989ap%26ss.161..201m&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 161, no. 2, Nov. 1989, p. 201-207.

Astronomy and Astrophysics

Astrophysics

4

Cosmic Dust, Interstellar Extinction, R Coronae Borealis Stars, Stellar Envelopes, Variable Stars, Far Ultraviolet Radiation, Glassy Carbon, Peculiar Stars, Stellar Mass Ejection

Scientific paper

Extinction curves for core-mantle and multicored grains containing two allotropic carbons are compared with far-UV extinction observations of the variable star R CrB. A good agreement is reached by multicore grains; but it is found that only during deep minimum considered models of grain do not fit the observational UV extinction. It indicates the existence, in this phase, of another type of grains like those of Platt particles.

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