Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988a%26a...203..361a&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 203, no. 2, Sept. 1988, p. 361-366. Research supported by the Department of Sp
Astronomy and Astrophysics
Astronomy
29
Binary Stars, Cosmic Dust, Stellar Spectrophotometry, Symbiotic Stars, Emission Spectra, Infrared Astronomy Satellite, Novae, Stellar Envelopes, Stellar Temperature, White Dwarf Stars
Scientific paper
The Infrared Astronomical Satellite (IRAS) data (photometric and low-resolution spectroscopic) on six symbiotic systems are analysed to find out the circumstellar dust parameters. The two S-type systems (UV Aur and CH Cyg) showed circumstellar dust-shell temperatures of ≡800K, while the other four systems, HM Sge, V1016 Cyg, RR Tel and RX Pup (which happen to be D type nova-like objects), showed much lower temperatures (≡300K). It is shown that among the nova-like systems themselves, the dust-shell temperatures decrease with increasing age of the nova-like outburst. Further, the observed ratio of the fluxes in the silicate features at 10 and 18 μm, for these systems, decreases with increasing age.
Anandarao Boddapati G.
Pottasch Stuart R.
Taylor Russ A.
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