Spectra and Fabry-Perot interferometry of AG Carinae and the nebula

Details Spectra and Fabry-Perot interferometry of AG Carinae and the nebula Spectra and Fabry-Perot interferometry of AG Carinae and the nebula

Jun 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976apj...206..469j&link_type=abstract

Astrophysical Journal, vol. 206, June 1, 1976, pt. 1, p. 469-473. Research supported by the Lockheed Independent Research Progr

Astronomy and Astrophysics

Astrophysics

19

Astronomical Spectroscopy, Fabry-Perot Interferometers, Line Spectra, Nebulae, Supergiant Stars, Electron Density (Concentration), Radiant Flux Density, Radio Waves, Spectrum Analysis, Stellar Evolution, Stellar Spectra, Tables (Data)

Scientific paper

Observations of the variable P Cygni-type supergiant and the unique ring nebula around it were made in 1974. Line identifications are tabulated, and an estimated electron density of 1700 per cu cm is combined with a radio flux density to derive a nebular mass of 0.18 (plus or minus 0.04) solar mass on the basis of a distance of 2 kpc. From the data, some ideas of the age and kinematics of the nebula are offered, tracing the evolution of P Cygni supergiants from the youthful prototype past the nebular stage of AG Carinae into more typical, relative old age without recognizable nebular envelopes.

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