THE ABELL-35 NEBULA INSIDE-OUT

We present deep 6 cm continuum and narrowband optical emission-line im ages in H alpha lambda 6563, [O III] lambda 5007, [O II] lambda 3727, and [N II] lambda 6584 of the Abell 35 planetary nebula (PN), showing its unique features. First, surrounding the central binary system, the re is a bow shock, best seen predominantly in [O III], possibly weakly in H alpha, and not at all in [O II], [N II], or 6 cm continuum. Fabr y-Perot [O III] data are also presented which constrain the bow shock kinematical parameters. Second, external to the central bow shock, the re are two prominent parallel nebular features (the ''pipes''), seen a t 6 cm continuum and in H alpha, [O II], and [N II], which suggest dyn amical interaction between the nebular material and the interstellar m edium. Fabry-Perot [N II] data provide the kinematical parameters for the pipes. Archival IUE spectra are also presented which indicate that the temperature due to the hot companion with its accretion disk is o n the order of 150,000 K. We derive a mass-loss rate of less than or e qual to 3.0 x 10(-10) M. yr(-1), a systemic wind velocity of greater t han or equal to 530 km s(-1), and a total nebular mass of similar to 0 .23 M.. We discuss the data presented here in the context of a binary system with a systemic wind moving at Mach 1.3 with respect to the PN medium to give rise to the bow shock morphology. Further, we also disc uss the PN-ISM interaction as a Mach 10 shock which gives rise to two prominent linear features as a result of an inhomogeneous PN ejection mechanism.