Published November 1978 | Version v1
Journal article Metadata-only

Condensation of a shell around HD 193793

Creators

  • 1. Royal Observatory, Edinburgh (UK)

Description

Infrared photometry of the Wolf-Rayet binary HD 193793 shows that grains condensed in its circumstellar shell between 1976 June and 1977 August. The observations can be fitted by an optically thin shell of 4 x 10-8 solar masses of graphite grains at a temperature of about 900 K. A spectrum in the 2-μm atmospheric window reveals an emission feature near 2.04 μm. The same feature has been found in the W-R system γ2 Vel and it has been provisionally ascribed to the 2.058-μm He I line. (author)

Additional details

Publishing Information

Journal Title
Mon. Not. R. Astron. Soc.
Journal Volume
185
Journal Issue
2
Series
Mon. Not. R. Astron. Soc.
Journal Page Range
467-472
ISSN
0035-8711

INIS

Country of Publication
United Kingdom
Country of Input or Organization
United Kingdom
INIS RN
10431703
Subject category
S79: ASTROPHYSICS, COSMOLOGY AND ASTRONOMY;
Descriptors DEI
BINARY STARS; COORDINATES; COSMIC DUST; COSMIC GASES; GRAPHITE; HELIUM; INFRARED RADIATION; INTERSTELLAR GRAINS; SPECTROPHOTOMETRY; STAR ACCRETION; STAR MODELS; WOLF-RAYET STARS
Descriptors DEC
CARBON; DUSTS; ELECTROMAGNETIC RADIATION; ELEMENTS; FLUIDS; GASES; MAIN SEQUENCE STARS; MATHEMATICAL MODELS; NONMETALS; PARTICLES; RADIATIONS; RARE GASES; STAR EVOLUTION; STARS