... The sample includes 101 Cepheids with radial velocities, 99 Cepheids with proper motions (mostly from Hipparcos and Tycho-2) and 91 Cepheids with space velocities. ... The thick-disc and halo local populations of Galactic field RR Lyrae stars are analyzed by applying a bimodal version of the statistical parallax (maximum-likelihood) technique to a sample of 361 RR Lyraes with known periods, radial-velocities, metallicities, 2MASS K-band photometry, and absolute proper motions on the ICRS system. ...
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Ссылки http://lnfm1.sai.msu.ru/~rastor/Papers/Gaia_2004_Proceedings_707.pdf -- 784.2 Кб -- 06.02.2009 Похожие документы