Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991a%26a...252..550b&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 252, no. 2, Dec. 1991, p. 550-556.
Astronomy and Astrophysics
Astrophysics
44
Hubble Constant, Luminous Intensity, Maximum Likelihood Estimates, Planetary Nebulae, Virgo Galactic Cluster, Distance, Galactic Evolution, Least Squares Method
Scientific paper
The use of bright planetary nebulae for distance determination is examined in terms of a dependence between the planetary nebulae luminosity function (PNLF) and the intrinsic luminosity of the parent galaxy. A study of the Leo I galaxies' PNLFs and the parent galaxies' magnitudes demonstrates a similar correlation. Using distance estimates derived with the surface-brightness-fluctuation method it is shown that smaller distances are consistently assigned to more luminous galaxies. An exponential portion of the bright end of the PNLFs accounts for the systematic effects including an increase in the specific PN density from luminous to faint galaxies. The use of an exponential LF is proposed as a distance indicator with attention given to the calibration of the Hubble's constant. An example is outlined in which the exponential LF method gives a value that varies significantly from previous estimates.
Bottinelli Lucette
Gouguenheim Lucienne
Paturel Georges
Teerikorpi Pekka
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