Spectropolarimetry of OJ287

Details Spectropolarimetry of OJ287 Spectropolarimetry of OJ287

Dec 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994aas...18511004d&link_type=abstract

American Astronomical Society, 185th AAS Meeting, #110.04; Bulletin of the American Astronomical Society, Vol. 26, p.1506

Astronomy and Astrophysics

Astronomy

Scientific paper

The polarization spectrum of OJ287 was obtained during the 1993/94 observing campaign within the OJ-94 International Collaboration. Data were taken on December 17-18-19/1993, an on Januarty 11-12/1994. Between both periods of observations, OJ287 showed minor flare activity, where brightness raised from V=15.75 to V=15.25, and the polarization degree varied between 0.5% and 8%. On the spectra taken on January 11, we have also observed large variations in the polarization angle ~ 90(deg) , associated with changes of ~ 2% in the polarization degreee. We have also observed the [OIII]5007 emission line; we investigate its appearance during change in brightening conditions, and preliminary results will be presented.

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