Linear spectropolarimetry of the Hα emission line of ζ Puppis.

Details Linear spectropolarimetry of the Hα emission line of ζ Puppis. Linear spectropolarimetry of the Hα emission line of ζ Puppis.

Jun 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996a%26a...310..533h&link_type=abstract

Astronomy and Astrophysics, v.310, p.533-546

Astronomy and Astrophysics

Astrophysics

29

Stars: Early Type, Stars: Mass-Loss, Stars: Individual: {Zeta} Puppis, Polarization, Instrumentation: Polarimeters

Scientific paper

We present high-S/N spectropolarimetry of the Hα emission line of ζ Puppis. We discuss, and successfully remove, a high-frequency instrumental signature. The corrected data show polarization structure through the emission line, which we attribute to an equatorial density enhancement of the wind. We employ simple (core-halo) numerical models to derive a lower limit of a factor of 1.3 to the implied equator-to-pole density ratio, and to demonstrate that the wind structure predicted by wind-compression theory is capable of reproducing the gross characteristics of the polarization spectrum.

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