Zwicky Transient Facility and Globular Clusters: The Period-Luminosity and Period-Wesenheit Relations for Anomalous Cepheids Supplemented with Large Magellanic Cloud Sample

November 2022 • 2022AJ....164..191N

Authors • Ngeow, Chow-Choong • Bhardwaj, Anupam • Graham, Matthew J. • Groom, Steven L. • Masci, Frank J. • Riddle, Reed

Abstract • We present the first gri-band period-luminosity (PL) and period-Wesenheit (PW) relations for the fundamental mode anomalous Cepheids. These PL and PW relations were derived from a combined sample of five anomalous Cepheids in globular cluster M92 and the Large Magellanic Cloud, both of which have distance accurate to ~1% available from literature. Our g-band PL relation is similar to the B-band PL relation as reported in previous study. We applied our PL and PW relations to anomalous Cepheids discovered in dwarf galaxy Crater II, and found a larger but consistent distance modulus than the recent measurements based on RR Lyrae. Our calibrations of gri-band PL and PW relations, even though less precise due to small number of anomalous Cepheids, will be useful for distance measurements to dwarf galaxies.

Links

• PREPRINT http://arxiv.org/abs/2208.13950
• NED https://ned.ipac.caltech.edu/uri/NED::InRefcode/2022AJ....164..191N
• ELECTR https://doi.org/10.3847%2F1538-3881%2Fac8df2
• SIMBAD http://simbad.u-strasbg.fr/simbo.pl?bibcode=2022AJ....164..191N
• PDF https://iopscience.iop.org/article/10.3847/1538-3881/ac8df2/pdf