A Study on the Universality and Linearity of the Leavitt Law in the LMC and SMC Galaxies

Abstract

The universality and linearity of the Leavitt law are hypotheses commonly adopted in studies of galaxy distances using Cepheid variables as standard candles. In order to test these hypotheses, we obtain slopes of the Leavitt law using linear regressions of fundamental-mode Cepheids observed by the Optical Gravitational Lensing Experiment project in the Magellanic Clouds. We find that the slopes in $VI$-bands and in the Wesenheit index behave exponentially, indicating non-linearity. We also find that the slopes obtained using long-period Cepheids can be considered as universal in the $VI$-bands, but not in the Wesenheit index.

arXiv comment8 pages, 3 figures. Accepted for publication in MNRAS

References in corpus (20)

• Maps of Dust IR Emission for Use in Estimation of Reddening and CMBR Foregrounds
• Final Results from the Hubble Space Telescope Key Project to Measure the Hubble Constant
• The Hubble Constant
• New Period-Luminosity and Period-Color Relations of Classical Cepheids: I. Cepheids in the Galaxy
• A new calibration of Galactic Cepheid Period-Luminosity relations from B to K bands, and a comparison to LMC PL relations
• Spectroscopic Survey of Red Giants in the SMC. I: Kinematics
• Insights into the Cepheid distance scale
• Direct Distances to Cepheids in the Large Magellanic Cloud: Evidence for a Universal Slope of the Period-Luminosity Relation up to Solar Abundance
• Calibrating the Cepheid Period-Luminosity relation from the infrared surface brightness technique II. The effect of metallicity, and the distance to the LMC
• Period-Luminosity Relations Derived from the OGLE-III Fundamental Mode Cepheids
• Period-color and amplitude-color relations in classical Cepheid variables
• The Araucaria Project. The Distance to the Local Group Galaxy NGC 6822 from Cepheid Variables discovered in a Wide-Field Imaging Survey
• The Araucaria Project. An improved distance to the Sculptor spiral galaxy NGC 300 from its Cepheid variables
• The Araucaria Project. First Cepheid Distance to the Sculptor Group Galaxy NGC 7793 from Variables discovered in a Wide-Field Imaging Survey
• Period-color and amplitude-color relations in classical Cepheid variables III: The Large Magellanic Cloud Cepheid models
• Period-colour and amplitude-colour relations in classical Cepheid variables II: the Galactic Cepheid model
• The Detailed Forms of the LMC Cepheid PL and PLC Relations
• Period-color and amplitude-color relations in classical Cepheid variables V: The Small Magellanic Cloud Cepheid models
• Investigations of the Non-Linear LMC Cepheid Period-Luminosity Relation with Testimator and Schwarz Information Criterion Methods
• Period-Luminosity Relations for Cepheid Variables: From Mid-Infrared to Multi-Phase

Cited by in corpus (14)

• A local resolution of the Hubble tension: The impact of screened fifth forces on the cosmic distance ladder
• Large Magellanic Cloud Near-Infrared Synoptic Survey. II. The Wesenheit relations and their application to the Distance scale
• High-precision distance measurements with classical pulsating stars
• Large Magellanic Cloud Near-Infrared Synoptic Survey. III. A Statistical Study of Non-Linearity in the Leavitt Laws
• On Cepheid Distance Scale Bias due to Stellar Companions and Cluster Populations
• The Carnegie Hubble Program: The Infrared Leavitt Law in IC 1613
• The M31 Near-Infrared Period-Luminosity Relation and its non-linearity for $\delta$ Cep Variables with $0.5\le \log (P)\le 1.7$
• Cepheids in M31 - The PAndromeda Cepheid sample
• Period-Luminosity Relations Derived From the OGLE-III Fundamental Mode Cepheids II: The Small Magellanic Cloud Cepheids
• Young and Intermediate-age Distance Indicators
• On calibration of some distance scales in astrophysics
• M31 PAndromeda Cepheid sample observed in four HST bands
• The influential effect of blending, bump, changing period and eclipsing Cepheids on the Leavitt law
• Distance determination from the Cepheids and RR Lyrae period-luminosity relations