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astro.washington/balick/PNIC

PLANETARY NEBULA IMAGE CATALOGUE Bruce Balick, U. Washington. www.astro.washington.edu/balick/PNIC. A tribute to Donald E. Osterbrock, 1924–2007. ≈720 images of ≈620 PNe sorted by galactic coordinates and name search with your browser’s “Find”.

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astro.washington/balick/PNIC

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  1. PLANETARY NEBULA IMAGE CATALOGUE Bruce Balick, U. Washington www.astro.washington.edu/balick/PNIC A tribute to Donald E. Osterbrock, 1924–2007

  2. ≈720 images of ≈620 PNesorted by galactic coordinates and namesearch with your browser’s “Find” Special acknowledgements: Romano Corradi, Arturo Manhcado

  3. Ground-based, HST, and Large-Field Images when available Image Legend: name, coordinates, colors, attribution, source

  4. Morphology Classifications and Frequency Statistics ≈620 PNe; more HST images of PNe and pPNe to be added this summer

  5. Morphological Types • Primary: core outline, which is the most prominent structure seen in short exposures • DEPENDS ON GOOD SPATIAL RESOLUTION • Only one core classification per object, like a species • Secondary: large-scale symmetries • DEPENDS ON DEPTH OF EXPOSURES • Tertiary: relatively prominent extended features near the core • LOBES, SHELLS, HALOES, BOW WAVES… • DEPENDS ON DEPTH OF EXPOSURES • Tertiary: small-scale features • ANSAE, JETS, “SPIKES”, FILAMENTS, ETC. • DETECTION IS SENSITIVE TO RESOLUTION AND FILTER

  6. Primary: Core Outlines • Round (17% of classifiable, 13% of all) • Closed Elliptical (36%— 27%) • Barrel, or open elliptical (29%— 22%) • Pinched waist(9%— 6%) • Equatorial disk(9%— 7%) • Amorphous or complex (unclassifiable) (11%) • Poorly resolved (unclassifiable) (13%)

  7. Primary: Core Outlines • Roundthe core has a closed round outline • Closed Ellipticalthe core has a closed elliptical outline • Barrel, or open elliptical

  8. Primary: Core Outlines – Pinched waist the core has a pinched, perhaps darkened waist • Equatorial disk the core is dominated by a equatorial thin disk or ring

  9. Primary: Core Outlines – Amorphous or complex (unclassifiable) – Poorly resolved (unclassifiable)

  10. 2ry: Large-Scale Symmetry • Multiple Symmetry Axes (8%) • Spiral or Point Symmetry (5%) • Orthogonal Extensions (8%)

  11. 3ry: Prominent Core Extensions • Lobe Pairs (open and closed) (27%) • Peanut, or Pinched Barrel (4%) • Encapsulating Bow Wave (2%)

  12. 3ry: Prominent Core Extensions • Shells (adjacent to core; ≈smooth surface brightness) (20%) • Haloes (large, faint, limb brightened, sometimes irregular)(4%)

  13. 4ry: Small-Scale Features • Ansae or Knots (in regular pairs)(10%) • Jets or Bowshocks (in regular pairs)(3%) • Spikes and Necklaces(2%)

  14. 4ry: Small-Scale Features • Knotty Edges (9%) • Filamentary or Flocculent Edges (12%) • Possible Neutral Edges (3%)

  15. Remember! • The images come from highly biased and incomplete samples and surveys • The image details depend on exposure depth, spatial resolution, filters, field, other observables • Morphologies are a multidimensional continuum; names can create artificial boundaries • More HST images coming: prePNe and PNe • Combine with kinematic data • e.g., The SPM Kinematic Catalog of PNe (in progress) J.A. Lopez, M. Richer, H. Riesgo, W. Steffen, J. Meaburn, G. Garcia-Segura, M. Bryce, & K. Escalante • Combine with IR & x-ray images

  16. X-Ray vs Optical Core Morphologies • All nine extended x-ray PNe are contained within closed cores and lobes(so far, anyway) • All seven non-detections of PNe have open geometries • Suggests that “punctures” deflate the hot bubble; gas cools by expansion X-ray images from www.iaa.csic.es/xpn/xmm_axaf_det.html courtesy Martin A. Guerrero, You-Hua Chu, and Robert A. Gruendl

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