The luminosity and kinematics of RR Lyraes. II - RR Lyraes and the distance to the LMC

Details The luminosity and kinematics of RR Lyraes. II - RR Lyraes and the distance to the LMC The luminosity and kinematics of RR Lyraes. II - RR Lyraes and the distance to the LMC

Aug 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986mnras.221..887r&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 221, Aug. 15, 1986, p. 887-896.

Other

42

Astrometry, Magellanic Clouds, Stellar Luminosity, Stellar Motions, Variable Stars, Cepheid Variables, Distance, Giant Stars, Mira Variables, Parallax, Stellar Magnitude

Scientific paper

Using a new determination of the absolute magnitude of RR Lyraes, derived from maximum-likelihood analysis of proper motions and radial velocities of galactic variables, the authors have calculated the distance modulus of the LMC as (m-M) = 18.37±0.15. They find that the RR Lyraes in the SMC lie at a distance of 57±4 kpc [(m-M) = 18.78±0.15]. The authors review other LMC stars, Cepheids, cluster main-sequence fitting and Miras. They have combined these results to derive a "best estimate" of 47±2 kpc [(m-M) = 18.35] as the distance of the LMC. Scaling the Sandage-Tammann and Aaronson, Mould and Huchra distance scales to this LMC modulus gives H0 ≡ 90 km s-1Mpc-1.

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