A catalogue of absolute fluxes and distances of planetary nebulae

Details A catalogue of absolute fluxes and distances of planetary nebulae A catalogue of absolute fluxes and distances of planetary nebulae

Sep 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992a%26as...94..399c&link_type=abstract

Astronomy and Astrophysics Supplement Series (ISSN 0365-0138), vol. 94, no. 3, Sept. 1992, p. 399-452.

Astronomy and Astrophysics

Astronomy

353

Astronomical Catalogs, Interstellar Extinction, Optical Thickness, Planetary Nebulae, Stellar Spectrophotometry, Galactic Bulge, H Alpha Line, H Beta Line, Helium, Hydrogen, Magellanic Clouds, Milky Way Galaxy, Radio Astronomy, Stellar Evolution

Scientific paper

The paper presents a complete list of averaged recalibrated absolute H-beta fluxes, global (where possible) relative He II lambda 4686 fluxes, 5 GHz radio flux densities, and H-alpha/H-beta interstellar extinction constants for 778 Galactic planetary nebulae. The catalog provides much of the fundamental data required to generate Zanstra temperatures. When data with the lowest errors are selected, the optical and radio/optical extinctions show a peculiar correlation, with the radio values slightly high at low extinction and notably low at high extinction. The data are used, along with the best estimates of angular diameters, to calculate Shklovsky distances according to the Daub scheme on the scale used earlier by Cahn and Kaler (1971). Use of this distance scale shows approximate equality of the death rates of optically thick and optically thin planetary nebulae. The method gives the correct distances to the Magellanic Clouds.

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