SIMBAD references

1994A&A...288L...5L - Astronomy and Astrophysics, volume 288, L5-8 (1994/8-1)

"Fossil" symbiotic novae.


Abstract (from CDS):

While a symbiotic nova's outburst quickly degrades the molecular content of a circumstellar shell, it takes ∼1000yr to move fresh material out from a star to its OH masing zone. During this post-outburst phase a shell lacks its usual complement of molecules, and so bears a stamp from the nova outburst, even though it is no longer a soft X-ray, UV or radio source. These objects are "fossil" symbiotic novae. The number of potential "fossils" with dense shells is commensurate with the frequency of observed Galactic symbiotic novae. The densest O-rich shells exhibit the 9.7µm silicate line in absorption. This places them in the IRAS low resolution spectral type 38-39 class. About 50 % of these mass-losing giants have had comparably massive companions. Of 38 class members examined at 1612 MHz, 32 exhibit masers. But six (16 %) lack them. We identify these six with "fossil" symbiotic novae.

Abstract Copyright:

Journal keyword(s): binaries: symbiotic - stars: novae - stars: AGB

Simbad objects: 43

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