Radial velocities of LMC RR Lyrae (Borissova+, 2006)

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Stars: Variable, Magellanic Clouds, Radial Velocities

Scientific paper

In Paper I (Cat. J/A+A/423/97) we presented radial velocities, metallicities and K-band magnitudes of 74 RR Lyrae stars in the inner regions of the LMC. The optical low resolution spectra were obtained with the FORS1 at the ESO VLT and near-IR photometry images with the SOFI infrared array at the ESO NTT. We have chosen to extend this sample by using the MACHO (Alcock et al., 2000, Cat. J/ApJ/542/257) and OGLE (Zebrun et al., 2001AcA....51..317Z) databases to seven fields of the LMC bar, at distances from 0.4 to 2.5 degrees away from the rotation center (Soszynski et al., 2003, Cat. J/AcA/53/93). Two of these new fields are centered on the LMC clusters NGC 1835 and NGC 2019. We also observed additional stars in the fields LMC-4, LMC-9 and LMC-14 defined in Paper I.
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