IRC + 10216 circumstellar envelope. I. Models for the dust and gas

Journal Article · Tue Mar 01 04:00:00 EST 1988 · Astrophys. J.; (United States)

DOI:https://doi.org/10.1086/166141· OSTI ID:7251947

Keady, J J; Hall, D N.B.; Ridgway, S T

Very high resoluton infrared spectra for the gas flow from the IRC + 10216 photosphere is interpreted using a detailed empirical model of the density, temperature, and velocity profiles of the gas. Amorphous carbon is shown to condense at about 3 stellar radii. Results give a mass-loss rate of 2 x 10 to the -5th solar masses/yr and suggest that most of the 2.3 micron CO absorption is produced by gas at distances greater than about 3 stellar radii. The CO column density into 3 stellar radii is found to be 2 x 10 to the 20th/sq cm, and the microturbulence in the region of 2-micron line formation is found to be about 1.0 km/s. 42 references.

• Research Organization: Los Alamos National Lab., NM (USA); Hawaii Univ., Honolulu (USA); Kitt Peak National Observatory, Tucson, AZ (USA)
• OSTI ID: 7251947
• Journal Information: Astrophys. J.; (United States), Journal Name: Astrophys. J.; (United States) Vol. 326; ISSN ASJOA
• Country of Publication: United States
• Language: English

Related Subjects

640102* -- Astrophysics & Cosmology-- Stars & Quasi-Stellar
Radio & X-Ray Sources
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ABUNDANCE
AMORPHOUS STATE
ATMOSPHERES
CARBON
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CHALCOGENIDES
COSMIC DUST
COSMIC GASES
DENSITY
DUSTS
ELEMENTS
FLUID FLOW
FLUIDS
GAS FLOW
GASES
INFRARED SPECTRA
MASS TRANSFER
NONMETALS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
SPECTRA
STELLAR ACTIVITY
STELLAR ATMOSPHERES
STELLAR WINDS
TURBULENCE