Mathematics – Logic
Scientific paper
Feb 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989apj...337..795h&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 337, Feb. 15, 1989, p. 795-802. Research supported by NASA.
Mathematics
Logic
11
Balmer Series, Binary Stars, Continuous Radiation, Emission Spectra, Nebulae, Radio Emission, Astronomical Spectroscopy, Bremsstrahlung, H Lines, High Temperature Gases, Mira Variables, Optical Thickness, Shock Heating
Scientific paper
The 6 cm radio continuum structure of the R Aquarii outer nebula is compared with CCD imagery of H-alpha and H-beta line emission. It is shown that the 6 cm VLA imagery is morphologically similar and quantitatively related spatially to Balmer line imagery. There is negligible interstellar or circumstellar absorption along the line of sight to the outer nebula. The 6 cm structure of the outer nebula is consistent with thermal bremsstrahlung emission by a hot, optically thin gas. Spectra of the outer R Aquarii nebula are suggestive of shock-wave heating. The approximate equality of mass loss and radiative cooling suggests that the system's wind is probably enough to power the outer nebula and may account for its long-term persistence.
Hollis Jan. M.
Oliversen Ronald James
Wagner Robert Marcus
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