Near-infrared Mira PeriodLuminosity Relations in M33 Academic Article uri icon

abstract

  • 2018. The American Astronomical Society. All rights reserved. We analyze sparsely sampled near-infrared (JHK s) light curves of a sample of 1781 Mira variable candidates in M33, originally discovered using I-band time-series observations. We extend our single-band semi-parametric Gaussian process modeling of Mira light curves to a multiband version and obtain improved period determinations. We use our previous results on near-infrared properties of candidate Miras in the LMC to classify the majority of the M33 sample into oxygen- or carbon-rich subsets. We derive period-luminosity relations for O-rich Miras and determine a distance modulus for M33 of 24.80 0.06 mag.

published proceedings

  • The Astronomical Journal

author list (cited authors)

  • Yuan, W., Macri, L. M., Javadi, A., Lin, Z., & Huang, J. Z.

publication date

  • January 1, 2018 11:11 AM