Spectrophotometric observations of symbiotic stars and related objects

Astronomy and Astrophysics – Astronomy

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Stellar Spectrophotometry, Symbiotic Stars, Ultraviolet Astronomy, Visible Spectrum, Abundance, Emission Spectra, Interstellar Extinction, Line Spectra

Scientific paper

Calibrated optical spectrophotometric observations of 16 symbiotic and symbiotic-like objects are presented. The objects observed include Z And, T CrB, CH Cyg, CI Cyg, V1016 Cyg, V1329 Cyg, AG Dra, YY Her, RS Oph, XX Oph, AG Peg, AX Per, CL Sco, HM Sge, AS 289, and M1-2. Integrated emission-line intensities are tabulated for comparison with ultraviolet and infrared data, as well as with previous optical studies. The reddening to each of the objects is derived by assuming that Balmer lines are emitted in their case B recombination ratios. However, the values so derived are often systematically higher than reddening estimates from the ultraviolet 2200 A feature. Comparisons with the available data from other wavelength ranges are noted.

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