Analysis of ultraviolet spectrophotometric data from Copernicus. Final report

Technical Report · Tue Apr 17 00:00:00 EST 1979

OSTI ID:5730840

Snow, Jr, T P

Ultraviolet spectral data from the OAO 3 satellite are being used to study interstellar absorption lines and stellar and circumstellar lines in hot stars. The interstellar data are beneficial in analyzing the depletions of heavy elements from the gas phase and in elucidating how these depletions depend on physical conditions. Abundances in separate velocity components were determined from line profiles. Observations were carried out for interstellar abundances, both atomic and molecular, towards a number of stars. The better quality data are being analyzed for profile information and the lesser data are being used in curve-of-growth analyses. Molecular observations were carried out as well; N/sup 2/ was sought, interstellar C/sup 2/ was detected and its rotational excitation utilized to establish limits in interstellar cloud temperatures. An extensive search for H/sup 2/O resulted in a tentative identification which will produce new information on chemical reaction rates. Interstellar depletions and grain properties in the rho Ophiuchi cloud, stellar wind variability, and circumstellar lines are also under study.

• Research Organization: Colorado Univ., Boulder (USA). Lab. for Atmospheric and Space Physics
• OSTI ID: 5730840
• Report Number(s): N-79-20942; TRN: 80-003709
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
COSMIC GASES
CHEMICAL COMPOSITION
INTERSTELLAR SPACE
ABSORPTION SPECTRA
STARS
ULTRAVIOLET SPECTRA
STELLAR ATMOSPHERES
ABUNDANCE
ASTRONOMY
CARBON
MASS
NITROGEN
SATELLITES
SPECTROPHOTOMETRY
STELLAR WINDS
WATER
ATMOSPHERES
CRYOGENIC FLUIDS
ELEMENTS
FLUIDS
GASES
HYDROGEN COMPOUNDS
NONMETALS
OXYGEN COMPOUNDS
SPACE
SPECTRA
640105* - Astrophysics & Cosmology- Galaxies
640102 - Astrophysics & Cosmology- Stars & Quasi-Stellar
Radio & X-Ray Sources