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P48 |
March 2000
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To be published in:
Astronomy & Astrophysics Letters
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Spectropolarimetry of the iron low ionization broad absorption line
quasar Q0059-2735+
H. Lamy1 and
D. Hutsemékers2,1,*
1 Institut d'Astrophysique et de Géophysique - Université de Liège, Avenue de Cointe 5, 4000 Liège, Belgium
2 European Southern Observatory, Casilla 19001, Santiago, CHile
* Chercheur Qualifié FNRS, Belgium
+ Based on observations collected at the European Southern Observatory (ESO, La Silla)
We present optical (ultraviolet rest-frame) spectropolarimetric
observations of the rare iron low ionization broad absorption line (BAL)
QSO Q0059-2735. The continuum polarization increases to the blue with
a regular rotation of the polarization position angle, suggesting that
at least two mechanisms are at the origin of the polarization. There is
also some evidence for dilution by a FeIIII blends in absorption are not more
polarized than the continuum, while they are clearly visible in the
polarized flux. These different polarization properties of
FeII absorption lines suggest a different
origin and/or geometry. The observed properties of Q0059-2735 are
consistent with a hybrid QSO / starburst model.
Quasars: absorption lines -- Quasars: individual: Q0059-2735 --
Polarization
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0059.ps.gz |
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