Adding RR Lyrae <i>y</i>-Band Template Light Curves to <tt>gatspy</tt>

Abstract We complement the y -band template light curves for RR Lyrae to the well-established template light curves in the ugriz-band, where the latter have been adopted in the astroML/gatspy python package as one of the period-search methods for RR Lyrae. These y -band template light curves were constructed based on the z -band time series data taken from the Sloan Digital Sky Survey (SDSS), the y -band light curves from the Pan-STARRS1 survey, and dedicated y -band observations using the Lulin One-meter Telescope for RR Lyrae located in the SDSS Stripe 82 region. These y -band template light curves, 9 for the ab-type RR Lyrae and 3 for the c-type RR Lyrae, can be applied in conjunction to the ugriz-band template light curves for upcoming sky surveys involving the y -band, such as the Vera C. Rubin Observatory Legacy Survey of Space and Time.