Astronomy and Astrophysics – Astrophysics
Scientific paper
Sep 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991apj...378..708w&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 378, Sept. 10, 1991, p. 708-717. Research supported by McDonald Observatory
Astronomy and Astrophysics
Astrophysics
13
Cepheid Variables, Maximum Likelihood Estimates, Stellar Luminosity, Stellar Magnitude, Stellar Motions, Stellar Parallax, Kinematics, Radial Velocity, Stellar Models
Scientific paper
The relative solar motions, Oort constants, velocity ellipsoid parameters, and zero points of the PL and PLC relations are determined by performing a maximum likelihood statistical parallax analysis of classical Cepheids. The analysis is based on 90 proper motions drawn from the list of Karimova and Pavlovskaya (1981) and on the analytical approach of Hawley et al. (1986). The results give a best estimate for the mean absolute magnitude of Cepheids which, for the Cepheid absolute magnitude zero point, is highly stable against refinements in the mathematical technique and against additional Cepheid proper motion data of quality similar to the existing proper motions. The solar motion components along the axes of uncertainties less than + or - 2 km/s are also determined.
Barnes Thomas G. III
Hawley Suzanne L.
Jefferys William H.
Wilson Teresa D.
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