The extreme carbon star CRL 3099

Details The extreme carbon star CRL 3099 The extreme carbon star CRL 3099

Jul 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985mnras.215p..63f&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 215, July 15, 1985, p. 63P-67P.

Astronomy and Astrophysics

Astronomy

7

Carbon Stars, Infrared Photometry, Infrared Stars, Light Curve, Stellar Envelopes, Variable Stars, Mira Variables, Stellar Color, Stellar Mass Ejection

Scientific paper

JHKL photometry of CRL 3099, which has a thick carbon-rich dust shell, shows it to be a Mira variable (Delta-K = 2 mag, P = 495 days). The four known extreme carbon Miras all have periods (495-650 days) longer than typical (optically selected) carbon Miras. They suggest therefore that dense shells occur preferentially at longer periods (as in oxygen-rich Miras), and that these objects are not simply normal carbon Miras undergoing episodic mass ejection.

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