Planetary nebulae as standard candles. IV - A test in the Leo I group

Details Planetary nebulae as standard candles. IV - A test in the Leo I group Planetary nebulae as standard candles. IV - A test in the Leo I group

Sep 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989apj...344..715c&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 344, Sept. 15, 1989, p. 715-725.

Astronomy and Astrophysics

Astrophysics

96

Galactic Bulge, Planetary Nebulae, Stellar Luminosity, Distance, Luminosity, Oxygen Spectra, Stellar Evolution

Scientific paper

In this paper, PN are used to determine accurate distances to three galaxies in the Leo I group - The E0 giant elliptical NGC 3379, its optical companion, the SB0 spiral NGC 3384, and the smaller E6 elliptical NGC 3377. In all three galaxies, the luminosity-specific PN number densities are roughly the same, and the derived stellar death rates are in remarkable agreement with the predictions of stellar evolution theory. It is shown that the shape of the forbidden O III 5007 A PN luminosity function is the same in each galaxy and indistinguishable from that observed in M31 and M81. It is concluded that the PN luminosity function is an excellent standard candle for early-type galaxies.

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