Raman scattering in symbiotic stars. I. Spectropolarimetric observations.

Details Raman scattering in symbiotic stars. I. Spectropolarimetric observations. Raman scattering in symbiotic stars. I. Spectropolarimetric observations.

Oct 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996a%26as..119...61h&link_type=abstract

Astronomy and Astrophysics Supplement, v.119, p.61-90

Astronomy and Astrophysics

Astrophysics

45

Stars, Stars: Binaries: Symbiotic, Stars: Late-Type, Stars: Mass-Loss, Polarization

Scientific paper

We present high signal-to-noise, high-dispersion linear spectropolarimetry of the Raman-scattered λλ6825, 7082A emission lines in 27 southern-hemisphere symbiotic systems. We give continuum polarization measurements for all the targets (together with estimates of the foreground interstellar polarization), and new estimates of the red-giant spectral types in 23 systems. We confirm continuum-polarization variability in five out of eight systems with previous high-quality photopolarimetry. The Raman lines are fully resolved; although they display a wide variety of morphologies, both the intensity and polarization profiles appear basically to be triple-peaked. Spectra of five systems observed in both 1992 and 1994 show stable Raman-line intensity profiles, but with significant variations in the polarization structure.

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