The equatorial disk at the center of the PN CPD-568032

O. Chesneau*, A. Collioud, O. De Marco, E. Lagadec, A. A. Zijlstra, S. Wolf, A. Acker, G. C. Clayton

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contributionpeer-review


We present N band observations of the planetary nebula CPD-568032 by VLTI/MIDI. The dusty environment of CPD-568032 exhibits a bright unresolved core and a diffuse environment evidenced by HST imaging. From MIDI 8.7μm acquisition images (dominated by PAHs emission), the extension and geometry of the core have been estimated and compared to the STIS/HST observations (De Marco et al., 1997 and 2002). The UT2 and UT3 telescopes were used providing projected baselines between 40 and 45 meters. The bright infrared core is almost fully resolved with these baselines although high SNR fringes at low level have been detected. This clear signal reveals a ring-like structure interpreted as the bright inner rim of the equatorial disk exposed to the flux from the Wolf-Rayet star at the center of the system. The geometrical parameters are well constrained by means of simple geometrical models and a radiative transfer model is under development to extract the physical parameters of the disk.

Original languageEnglish
Title of host publicationPlanetary Nebulae as astronomical tools
Subtitle of host publicationInternational Conference on Planetary Nebulae as Astronomical Tools
EditorsRyszard Szczerba, Grażyna Stasińska, Slawomir K. Górny
Place of PublicationMelville, NY
PublisherAmerican Institute of Physics
Number of pages5
ISBN (Print)0735402949, 9780735402942
Publication statusPublished - 28 Nov 2005
Externally publishedYes
EventInternational Conference on Planetary Nebulae as Astronomical Tools - Gdansk, Poland
Duration: 28 Jun 20052 Jul 2005

Publication series

NameAIP conference proceedings
PublisherAmerican Institute of Physics Inc.
ISSN (Print)0094-243X


OtherInternational Conference on Planetary Nebulae as Astronomical Tools


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