Infrared observations of symbiotic stars

Details Infrared observations of symbiotic stars Infrared observations of symbiotic stars

Mar 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993japa...14...37a&link_type=abstract

Journal of Astrophysics and Astronomy (ISSN 0250-6335), vol. 14, no. 1, p. 37-44.

Astronomy and Astrophysics

Astronomy

2

Hot Stars, Infrared Astronomy, Red Giant Stars, S Stars, Symbiotic Stars, White Dwarf Stars, Astronomical Observatories, M Stars, Spectral Energy Distribution, Stellar Mass Accretion, Stellar Spectrophotometry, Variable Stars

Scientific paper

Near infrared measurements in the J, H and K bands have been carried out for a number of symbiotic stars with the 1.5 m telescope at the Rothney Astrophysical Observatory (RAO). A comparison with the earlier observations shows that the S-type symbiotic stars do not have any significant variation in the infrared flux over the past five years. However a small variation about 0.3 magnitude in the infrared flux has been detected for CH Cygni. The observations of HM Sagittae show large decreases in the infrared flux compared to the previous measurements. The variability in the infrared fluxes of both these objects could be attributed to a variation in the temperature due to the cooling of the dust shell. The variability observed for V1016 Cygni is found consistent with the previous measurements.

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