On the determination of absolute magnitude zero-points from HIPPARCOS parallaxes

Details On the determination of absolute magnitude zero-points from HIPPARCOS parallaxes On the determination of absolute magnitude zero-points from HIPPARCOS parallaxes

Dec 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998mnras.301..582k&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Volume 301, Issue 2, pp. 582-584.

Astronomy and Astrophysics

Astronomy

27

Stars: Distances

Scientific paper

The period-luminosity (PL) relation zero-point determination from Hipparcos trigonometric parallaxes of Cepheids is contentious. It is shown that the method used by Feast & Catchpole is equivalent to a standard minimization of sum of squares, and that it is free of Lutz-Kelker bias. The same technique is applied to RR Lyrae and field HB star data, the PL relation being replaced by a luminosity-metallicity relation.

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