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FI Lyr: A Candidate Binary System Consisting of Carbon-Rich and Oxygen-Rich Companions

Published online by Cambridge University Press:  07 August 2017

J.J. Wang ,
J.Y. Hu  and
X. Zhou
J.J. Wang
Affiliation:
Beijing Observatory, Academia Sinica, Beijing, 100080, China
J.Y. Hu
Affiliation:
Beijing Observatory, Academia Sinica, Beijing, 100080, China
X. Zhou
Affiliation:
Beijing Observatory, Academia Sinica, Beijing, 100080, China

Extract

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FI Lyr=IRAS18401+2854 is listed in the GCVS as type of SRb, the spectral type is M. In the IRAS LRS Catalog it is classified as 41, namely having the SiC feature at 11.3μm from a carbon-rich dust shell. We have obtained optical and near infrared spectra in the same period, but they show different chemical natures. We suggest that FI Lyr is a good candidate of a binary system consisting of carbon-rich and oxygen-rich companions.

Type
IV. Planetary Nebulae Connection: Evolution from the AGB
Information
Symposium - International Astronomical Union , Volume 155: Planetary Nebulae , 1993 , pp. 334
Copyright
Copyright © Kluwer 1993 

References

Skinner, C.J., et al., 1990, MNRAS, 243, 78.Google Scholar