The Cepheid period-luminosity zero-point from radial velocities and HIPPARCOS proper motions

Details The Cepheid period-luminosity zero-point from radial velocities and HIPPARCOS proper motions The Cepheid period-luminosity zero-point from radial velocities and HIPPARCOS proper motions

Aug 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998mnras.298l..43f&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Volume 298, Issue 2, pp. L43-l44.

Astronomy and Astrophysics

Astronomy

32

Cepheids, Galaxy: Fundamental Parameters, Distance Scale

Scientific paper

A value for the zero-point (rho) of the Cepheid period-luminosity relation, =2.81log P+rho, is deduced by comparing the value of the Oort constant, A, derived from radial velocities with that derived from Hipparcos proper motions. We find in this way that rho=-1.47+/-0.13, in excellent agreement with the value derived from Hipparcos trigonometrical parallaxes, rho=-1.43+/-0.10, by Feast & Catchpole in a recent paper.

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