Linear polarization of a group of symbiotic systems

Details Linear polarization of a group of symbiotic systems Linear polarization of a group of symbiotic systems

Aug 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000a%26as..145..197b&link_type=abstract

Astronomy and Astrophysics Supplement, v.145, p.197-214

Astronomy and Astrophysics

Astrophysics

7

Stars: Binaries: Symbiotic, Stars: Binaries Eclipsing, Stars: Variable Stars, Polarization

Scientific paper

We report linear polarization measurements of a set of symbiotic stars, made at several epochs during the period 1994-1998. Evidence of intrinsic polarization is looked for from the wavelength dependence of the polarization degree and position angle in UBVRI bands. The results have also been analysed to search for temporal variability of polarization. Several objects have shown a polarization spectrum different from that produced by interstellar dust grains and/or polarimetric variations on time scales as short as several days or months, indicating the presence of polarization component of circumstellar origin. Based on observations taken at Complejo Astronómico El Leoncito (CASLEO), operated under an agreement between the Consejo Nacional de Investigaciones Científicas y Técnicas de la República Argentina, the Secretaría de Ciencia y Tecnología de la Nación and the National Universities of La Plata, Córdoba and San Juan.

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