Template RR Lyrae H alpha, H beta, and H gamma Velocity Curves

Abstract

We present template radial velocity curves of $ab$-type RR Lyrae stars constructed from high-precision measurements of $\mathrm{H}\alpha$, $\mathrm{H}\beta$, and $\mathrm{H}\gamma$ lines. Amplitude correlations between the Balmer line velocity curves, Johnson $V$-band, and SDSS $g$- and $r$-band light curves are also derived. Compared to previous methods, these templates and derived correlations reduce the uncertainty in measured systemic (center-of-mass) velocities of RR Lyrae stars by up to 15 {\kms}, and will be of particular interest to wide-area spectroscopic surveys such as the Sloan Digital Sky Survey (SDSS) and LAMOST Experiment for Galactic Understanding and Exploration (LEGUE).

10 pages, 3 figures, accepted to AJ

References in corpus (9)

• LAMOST Experiment for Galactic Understanding and Exploration (LEGUE) The survey science plan
• SDSS Standard Star Catalog for Stripe 82: the Dawn of Industrial 1% Optical Photometry
• Evidence for Distinct Components of the Galactic Stellar Halo from 838 RR Lyrae Stars Discovered in the LONEOS-I Survey
• Revealing Substructure in the Galactic Halo - The SEKBO RR Lyrae Survey
• Multiperiodic Galactic field RR Lyrae stars in the ASAS catalog
• Proper Motions in Kapteyn Selected Area 103: A Preliminary Orbit for the Virgo Stellar Stream
• The Origin of the Virgo Stellar Substructure
• Two Distant Halo Velocity Groups Discovered by the Palomar Transient Factory
• Exploring the Variable Sky with the Sloan Digital Sky Survey

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