Panchromatic Hubble Andromeda Treasury XIII: The Cepheid period-luminosity relation in M31

Abstract

Using Hubble Space Telescope Advanced Camera for Surveys (HST/ACS) and Wide Field Camera 3 (WFC3) observations from the Panchromatic Hubble Andromeda Treasury (PHAT), we present new period-luminosity (P-L) relations for Cepheid variables in M31. Cepheids from several ground-based studies are identified in the PHAT photometry to derive new P-L and Wesenheit P-L relations in the near infrared and visual filters. We derive a distance modulus to M31 of 24.51 +/- 0.08 in the IR bands and 24.32 +/- 0.09 in the visual bands, including the first P-L relations in the F475W and F814W filters for M31. Our derived visual and IR distance moduli disagree at slightly more than a 1σ level. Differences in the P-L relations between ground-based and HST observations are investigated for a subset of Cepheids. We find a significant discrepancy between ground-based and HST P-L relations with the same Cepheids, suggesting adverse effects from photometric contamination in ground-based Cepheid observations. Additionally, a statistically significant radial trend in the P-L relation is found which does not appear to be explained by metallicity.

17 pages, 15 figures

References in corpus (16)

• A new Cepheid distance to the maser-host galaxy NGC 4258 and its implications for the Hubble Constant
• The Panchromatic Hubble Andromeda Treasury X. Ultraviolet to Infrared Photometry of 117 Million Equidistant Stars
• A new calibration of Galactic Cepheid Period-Luminosity relations from B to K bands, and a comparison to LMC PL relations
• The influence of chemical composition on the properties of Cepheid stars. II-The iron content
• Cepheid Calibrations of Modern Type Ia Supernovae:Implications for the Hubble Constant
• On the distance of the Magellanic Clouds using Cepheid NIR and optical-NIR Period Wesenheit Relations
• Cepheids in external galaxies. I. The maser-host galaxy NGC 4258 and the metallicity dependence of P-L and P-W relations
• Classical Cepheid Pulsation Models. XI. Effects of convection and chemical composition on the Period-Luminosity and Period-Wesenheit relations
• Clustering of Local Group distances: publication bias or correlated measurements? II. M31 and beyond
• A comprehensive study of Cepheid variables in the Andromeda galaxy. Period distribution, blending and distance determination
• The Araucaria Project. Near-Infrared Photometry of Cepheid Variables in the Sculptor Galaxy NGC 55
• Properties of M31. II: A Cepheid disk sample derived from the first year of PS1 PAndromeda data
• The M31 Near-Infrared Period-Luminosity Relation and its non-linearity for $\delta$ Cep Variables with $0.5\le \log (P)\le 1.7$
• Panchromatic Hubble Andromeda Treasury XIII: The Cepheid period-luminosity relation in M31
• The ACS Nearby Galaxy Survey Treasury III: Cepheids in the Outer Disk of M81
• Infrared photometry of Cepheids in the LMC clusters NGC 1866 and NGC 2031

Cited by in corpus (18)

• A 2.4% Determination of the Local Value of the Hubble Constant
• Clarifying the Hubble constant tension with a Bayesian hierarchical model of the local distance ladder
• Interstellar Extinction Curve Variations Toward the Inner Milky Way: A Challenge to Observational Cosmology
• Radii of Young Star Clusters in Nearby Galaxies
• Large Magellanic Cloud Near-Infrared Synoptic Survey. II. The Wesenheit relations and their application to the Distance scale
• A sub-2% Distance to M31 from Photometrically Homogeneous Near-Infrared Cepheid Period-Luminosity Relations Measured with the Hubble Space Telescope
• On Cepheid Distance Scale Bias due to Stellar Companions and Cluster Populations
• Cepheids in M31 - The PAndromeda Cepheid sample
• Panchromatic Hubble Andromeda Treasury XIII: The Cepheid period-luminosity relation in M31
• A spectroscopic study of blue supergiant stars in Local Group spiral galaxies: Andromeda and Triangulum
• Panchromatic Hubble Andromeda Treasury. XIV. The Period-Age Relationship of Cepheid Variables in M31 Star Clusters
• Candidate LBV stars in galaxy NGC 7793 found via HST photometry + MUSE spectroscopy
• Resolving the Discrepancy of Distance to M60, a Giant Elliptical Galaxy in Virgo
• Reducing and Analyzing the PHAT Survey with the Cloud
• New insights into the use of Ultra Long Period Cepheids as cosmological standard candles
• Novae in M51: a New, Much Higher Rate from Multi-epoch HST Data
• M31 PAndromeda Cepheid sample observed in four HST bands
• Variable Stars in M31 Stellar Clusters from the Panchromatic Hubble Andromeda Treasury