Variable dust obscuration in the symbiotic Mira and very slow Nova, HM SGE

Details Variable dust obscuration in the symbiotic Mira and very slow Nova, HM SGE Variable dust obscuration in the symbiotic Mira and very slow Nova, HM SGE

Mar 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989mnras.237p..45m&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 237, March 1, 1989, p. 45P-50P.

Astronomy and Astrophysics

Astronomy

19

Cosmic Dust, Infrared Photometry, Mira Variables, Novae, Stellar Occultation, Symbiotic Stars, Interstellar Extinction, Light Curve, M Stars, Stellar Color

Scientific paper

New infrared photometry is presented for the symbiotic Mira, HM Sge. Using this and published data a pulsation period of 527 day is derived. In addition to the normal pulsational modulation, the light curve for HM Sge has shown a distinct fading and reddening, starting in 1985. This is interpreted as a dust-obscuration event, and its possible association with the binary orbit is discussed.

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