A newly discovered nearby planetary nebula of old age

Details A newly discovered nearby planetary nebula of old age A newly discovered nearby planetary nebula of old age

Feb 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983apj...265..249w&link_type=abstract

Astrophysical Journal, Part 1, vol. 265, Feb. 1, 1983, p. 249-257. Research supported by the Fonds zur Foerderung der wissensch

Astronomy and Astrophysics

Astrophysics

30

Brightness Distribution, Planetary Nebulae, Stellar Evolution, Ubv Spectra, Blue Stars, Halos, Optical Emission Spectroscopy, Stellar Magnitude

Scientific paper

A new planetary nebula has been discovered with the following characteristics: an angular dimension of 17 x 14 arcmin; a red surface brightness of 23.6 mag/sq arcsec; a red integrated brightness of 10.45 mag; a distance (estimated with the Shklovskii method) of 0.32 kpc; a red absolute brightness of +2.9 mag; and a mean linear dimension of 1.44 pc. For the central star the following data were obtained: B equals 17.1 mag; M(B) equals +9.6 mag; Teff not less than 52,000 K; and r not greater than 0.008 solar radius. The data reveal that this planetary nebula is in a very late evolutionary stage, perhaps representing even the most evolved object of all the planetaries investigated. Data on the largest planetary nebulae are also examined.

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