High-resolution imaging and the H-R diagram of galactic bulge planetary nebulae

M. A. Dopita, J. P. Henry, I. R. Tuohy, B. L. Webster, E. H. Roberts, Yong-Ik Byun, L. L. Cowie, A. Songaila

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Images of six Galactic bulge planetary nebulae in the [O III] 5007 Å line have been obtained at Mauna Kea at the unprecedented resolution of 0″.35 (FWHM), by the technique of real-time photon counting followed by image reconstruction. The results are compared with those obtained at radio wavelengths, and optical spectrophotometry of the nebulae is used to construct a self-consistent photoionization model, to derive chemical abundances and to place the central stars on the H-R diagram. This method is shown to produce similar results to the classical Zanstra technique, but with the advantage that objects with high- or low-temperature central stars can be studied with equal facility. All our objects are observed during their excursion toward high temperatures on the H-R diagram. We find that these objects are optically thick, and lie on the good correlation between mass and nebular diameter found by previous authors. We also find a correlation between luminosity and metallicity, which is equivalent to a correlation between metallicity and mass of the planetary nebula nucleus, or between metallicity and stellar age.

Original languageEnglish
Pages (from-to)640-647
Number of pages8
JournalAstrophysical Journal
Volume365
Issue number2
DOIs
Publication statusPublished - 1990 Dec 20

Fingerprint

galactic bulge
planetary nebulae
metallicity
diagram
diagrams
high resolution
stars
spectrophotometry
image reconstruction
nebulae
photoionization
counting
luminosity
radio
wavelength
nuclei
photons
wavelengths

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Dopita, M. A., Henry, J. P., Tuohy, I. R., Webster, B. L., Roberts, E. H., Byun, Y-I., ... Songaila, A. (1990). High-resolution imaging and the H-R diagram of galactic bulge planetary nebulae. Astrophysical Journal, 365(2), 640-647. https://doi.org/10.1086/169517
Dopita, M. A. ; Henry, J. P. ; Tuohy, I. R. ; Webster, B. L. ; Roberts, E. H. ; Byun, Yong-Ik ; Cowie, L. L. ; Songaila, A. / High-resolution imaging and the H-R diagram of galactic bulge planetary nebulae. In: Astrophysical Journal. 1990 ; Vol. 365, No. 2. pp. 640-647.
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Dopita, MA, Henry, JP, Tuohy, IR, Webster, BL, Roberts, EH, Byun, Y-I, Cowie, LL & Songaila, A 1990, 'High-resolution imaging and the H-R diagram of galactic bulge planetary nebulae', Astrophysical Journal, vol. 365, no. 2, pp. 640-647. https://doi.org/10.1086/169517

High-resolution imaging and the H-R diagram of galactic bulge planetary nebulae. / Dopita, M. A.; Henry, J. P.; Tuohy, I. R.; Webster, B. L.; Roberts, E. H.; Byun, Yong-Ik; Cowie, L. L.; Songaila, A.

In: Astrophysical Journal, Vol. 365, No. 2, 20.12.1990, p. 640-647.

Research output: Contribution to journalArticle

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AU - Henry, J. P.

AU - Tuohy, I. R.

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AU - Roberts, E. H.

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AU - Songaila, A.

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