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Project home page
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The MACHO RR Lyrae data are available online at the MACHO Project home page (www.macho. mcmaster.ca/). These RR Lyrae are classified on the basis of the MACHO light curves, with RRab being fundamental pulsators; RRc, first overtones; and RRe, double mode pulsators.
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0141717415
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note
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We eliminated a low-velocity star, discrepant by more than 4σ from the mean, which could be a misidentified foreground star.
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0141605605
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note
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We adopt a conservative error of 10 km/s for this quantity on the basis of uncertainties in the control samples.
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0141605607
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note
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The sample is not large enough and the velocities are not accurate enough to (i) detect tidal streams in front or behind the LMC and (ii) measure the systemic rotation of the halo RR Lyrae population. However, from a sample of this size, and with velocities measured to this accuracy, there is no difficulty in measuring the velocity dispersion and thus distinguishing a disk population from a halo population in the LMC.
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35
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0141828745
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B. K. Gibson, T. S. Axelrod, M. E. Putman, Eds. (ASP Conference Series 16S, San Francisco)
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Stubbs, C.1
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0141494043
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note
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We gratefully acknowledge suggestions from E. Olszewski, A. Drake, M. Catelan, and C. Alcock and support by the Fondap Center for Astrophysics 15010003; by the U.S. Department of Energy National Nuclear Security Administration to University of California's Lawrence Livermore National Laboratory under contract W-7405-Eng-48; and by the Bilateral Science and Technology Program of the Australian Department of Industry, Technology, and Regional Development; and by ESO Program 70.B-0547.
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