IUE high-dispersion spectrum of R Aquarii

Details IUE high-dispersion spectrum of R Aquarii IUE high-dispersion spectrum of R Aquarii

Mar 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981apj...244..552j&link_type=abstract

Astrophysical Journal, Part 1, vol. 244, Mar. 1, 1981, p. 552-554.

Other

6

Binary Stars, Iue, Stellar Spectra, Ultraviolet Spectra, Variable Stars, Emission Spectra, Line Spectra, Magnesium, Red Giant Stars

Scientific paper

Emission-line spectra of several ions were observed in R Aqr in the wavelength range 1900-3000 A. C II diagnostics gives an electron density of about 400,000/cu cm and an electron temperature of about 10,000 K. The Mg II doublet profiles are grossly asymmetric, of a P Cygni type with terminal ejection velocity of at least 200 km/s. This is like Mg II behavior in Omicron Cet, Zeta Aur, and 32 Cyg, but unlike smaller UV shifts of the Mg II self-absorptions reported so far in other red giants and supergiants.

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