Origin of the cyanopolyynes in the envelope of IRC +10216

Journal Article · Mon Jul 01 04:00:00 EDT 1985 · Sov. Astron. Lett. (Engl. Transl.); (United States)

OSTI ID:6100476

Shmeld, I K; Strel'nitskii, V S; Gurvich, L V

Over wide temperature and pressure ranges and for numerous element compositions, chemical-equilibrium abundances are calculated for 94 molecular species including the n = 1--4 cyanopolyynes HC/sub 2//sub n/CN, whose thermodynamic constants are newly estimated. The cyanopolyynes and most of the other saturated molecules observed in the envelope of IRC +10216 are evidently formed in an equilibrium state near the stellar surface, their relative abundances becoming frozen as the envelope rapidly expands and cools.

• Research Organization: Radioastrophysical Observatory, Latvian Academy of Sciences, Riga
• OSTI ID: 6100476
• Journal Information: Sov. Astron. Lett. (Engl. Transl.); (United States), Journal Name: Sov. Astron. Lett. (Engl. Transl.); (United States) Vol. 11:4; ISSN SALED
• Country of Publication: United States
• Language: English

Related Subjects

640102* -- Astrophysics & Cosmology-- Stars & Quasi-Stellar
Radio & X-Ray Sources
640105 -- Astrophysics & Cosmology-- Galaxies
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ABUNDANCE
CARBON STARS
CHEMICAL COMPOSITION
CHEMISTRY
COSMIC DUST
COSMIC GASES
COSMOCHEMISTRY
CYANIDES
DUSTS
ELEMENT ABUNDANCE
EQUILIBRIUM
FLUIDS
GASES
MAIN SEQUENCE STARS
PRESSURE DEPENDENCE
STARS
TEMPERATURE DEPENDENCE
THERMODYNAMICS