ARE THE NEARBY AND PHOTOMETRIC STELLAR LUMINOSITY FUNCTIONS DIFFERENT?

Abstract

The stellar luminosity function derived from the sample of stars within 5.2--20~pc is the nearby luminosity function. The luminosity function obtained from deep low spatial resolution surveys to distances of typically 100--200~pc is the photometric luminosity function. We obtain and tabulate a best estimate of the parent distribution from which Malmquist corrected photometric luminosity functions are sampled. This is presently the most {\it accurate} and {\it precise} available estimate of the true distribution of stars with absolute magnitude for $M_{\mathrm{V}}\le 16.5$, as derived from low-resolution surveys. Using rigorous statistical analysis we find that the hypothesis that the nearby and photometric luminosity functions estimate the same parent luminosity function can be discarded with 99~per~cent confidence or better for $M_{\mathrm{V}}>13,M_{\mathrm{bol}}>10$.

14 pages, plain TeX, figures available on request, ApJ (to appear in Nov.1 issue of Part I)

References in corpus (1)

• UNIFICATION OF THE NEARBY AND PHOTOMETRIC STELLAR LUMINOSITY FUNCTIONS

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