The MACHO Project Large Magellanic Cloud Variable-Star Inventory. XIII. Fourier Parameters for the First-Overtone RR Lyrae Variables and the LMC Distance
Alcock, Charles; Alves, David R; Axelrod, Tim S; Becker, Andrew C; Bennett, D P; Clement, C; Cook, Kem H; Drake, Andrew J; Freeman, Kenneth; Geha, M; Griest, K; Lehner, M J; Marshall, S L; Minniti, Dante; Muzzin, A; Nelson, C A; Peterson, Bruce; Popowski, P; Quinn, Peter J; Rodgers, Alexander; Rowe, J F; Sutherland, William J; Vandehei, T; Welch, D L
Shapes of RR Lyrae light curves can be described in terms of Fourier coefficients that past research has linked with physical characteristics such as luminosity, mass, and temperature. Fourier coefficients have been derived for the V and R light curves of 785 overtone RR Lyrae variables in 16 MACHO fields near the bar of the LMC. In general, the Fourier phase differences φ21, φ31, and φ41 increase and the amplitude ratio R21 decreases with increasing period. The coefficients for both the V and...[Show more]
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