Astronomy and Astrophysics – Astronomy
Scientific paper
May 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986mnras.220..413s&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 220, May 15, 1986, p. 413-427.
Astronomy and Astrophysics
Astronomy
83
Stellar Luminosity, Stellar Motions, Stellar Parallax, Interstellar Extinction, Maximum Likelihood Estimates, Metallicity, Radial Velocity
Scientific paper
We have used an improved maximum-likelihood statistic to determine the absolute magnitude and kinematics of local RR Lyrae variables from a statistical and secular parallax analysis of proper motions and radial velocities. Our analysis indicates a 'best-buy' absolute magnitude (at mean intensity) of (Mv)= +0.75±0.2. We show that our analysis reconciles the divergent results of Heck & Lakaye and Clube & Dawe. We find no statistically significant evidence for any correlation between absolute magnitude and metallicity. However, there is a correlation between systemic rotation and both metallicity and period.
Murray Andrew C.
Reid Neil
Strugnell P.
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