The Luminosities and Distance Scales of Type II Cepheid and RR Lyrae variables

Abstract

Infrared and optical absolute magnitudes are derived for the type II Cepheids kappa Pav and VY Pyx from revised Hipparcos parallaxes and for kappa Pav, V553 Cen and SW Tau from pulsation parallaxes. Phase-corrected JHK mags are given for 142 RR Lyrae variables based on 2MASS data. RR Lyrae itself is overluminous compared with LMC RR Lyraes at the classical Cepheid modulus (18.39) consistent with a prediction of Catalan and Cortes. V553 Cen and SW Tau deviate by only 0.02 mag in the mean from the Matsunaga PL(K) relation for globular cluster type II Cepheids with a zero-point based on the same LMC modulus. Comparing directly these two stars with type II Cepheids in the LMC and in the Galactic Bulge leads to an LMC modulus of 18.37\pm0.09 and a distance to the Galactic Centre of 7.64\pm 0.21kpc. Kappa Pav may be a binary. V553 Cen and SW Tau show that at optical wavelengths PL relations are wider for field stars than for those in globular clusters (abridged).

29 pages, 13 figures, accepted for MNRAS

References in corpus (12)

• A new Cepheid distance to the maser-host galaxy NGC 4258 and its implications for the Hubble Constant
• A new calibration of Galactic Cepheid Period-Luminosity relations from B to K bands, and a comparison to LMC PL relations
• Cepheid Parallaxes and the Hubble Constant
• NGC 6441: another indication for a very high helium content in Globular Cluster stars
• The RR Lyrae Period - K Luminosity relation for Globular Clusters: an observational approach
• Kinematic Decoupling of Globular Clusters with Extended Horizontal-Branch
• The period-luminosity relation for type II Cepheids in globular clusters
• High resolution spectroscopy for Cepheids distance determination. III. A relation between gamma-velocities and gamma-asymmetries
• High resolution spectroscopy for Cepheids distance determination. II. A period- projection factor relation
• Evidence for an Overluminosity of the Variable Star RR Lyr, and a Revised Distance to the LMC
• The infrared JHK light curves of RR Lyr
• A Catalogue of RR Lyrae Stars from the Northern Sky Variability Survey

Cited by in corpus (46)

• Gaia DR3: Specific processing and validation of all-sky RR Lyrae and Cepheid stars -- The Cepheid sample
• AGB Stars in the Fornax Dwarf Spheroidal Galaxy
• Standard Galactic Field RR Lyrae. I. Optical to Mid-infrared Phased Photometry
• New near-infrared period-luminosity-metallicity relations for RR Lyrae stars and the outlook for Gaia
• The VMC Survey. XIII. Type II Cepheids in the Large Magellanic Cloud
• Kinematics of OB-associations in Gaia epoch
• Standard Galactic Field RR Lyrae II: A Gaia DR2 calibration of the period-Wesenheit-metallicity relation
• Variable stars in the VVV globular clusters. I. 2MASS-GC02 and Terzan10
• The influence of metallicity on the Leavitt Law from geometrical distances of Milky Way and Magellanic Clouds Cepheids
• Clustering of Local Group distances: publication bias or correlated measurements? IV. The Galactic Center
• New RR Lyrae variables in binary systems
• Large Magellanic Cloud Near-Infrared Synoptic Survey. IV. Leavitt Laws for Type II Cepheid Variables
• Baade-Wesselink distances and the effect of metallicity in classical cepheids
• Relative distances of Omega Centauri and 47 Tucanae
• The period-luminosity and period-radius relations of Type II and anomalous Cepheids
• High-precision distance measurements with classical pulsating stars
• RR Lyrae From Binary Evolution: Abundant, Young and Metal-Rich
• GALACTICNUCLEUS: A high-angular-resolution $JH{K}_s$ imaging survey of the Galactic centre. IV. Extinction maps and de-reddened photometry
• Galactic Bulge Population II Cepheids in the VVV Survey: Period-Luminosity Relations and a Distance to the Galactic Center
• Inspecting the Cepheid parallax of pulsation using Gaia EDR3 parallaxes. Projection factor and period-luminosity and period-radius relations
• Classical Cepheids in the Galactic outer ring R1R2'
• Near-Infrared Variability Study of the Central 2.3 arcmin x 2.3 arcmin of the Galactic Centre II. Identification of RR Lyrae Stars in the Milky Way Nuclear Star Cluster
• Evolutionary and pulsation properties of Type II Cepheids
• A thin shell of ionized gas explaining the IR excess of classical Cepheids
• RR Lyrae-based Distances for 39 Nearby Dwarf Galaxies Calibrated to Gaia eDR3
• Bulge RR Lyrae stars in the VVV tile $\text{b201}$
• An Updated Census of RR~Lyrae Stars in the Globular Cluster $\omega$~Centauri (NGC\,5139)
• Observational calibration of the projection factor of Cepheids I. The Type II Cepheid kappa Pavonis
• Analysing the spectral energy distributions of Galactic classical Cepheids
• Systematic uncertainties from halo asphericity in dark matter searches
• Kinematics and Multi Band Period-Luminosity-Metallicity Relation of RR Lyrae Stars via Statistical Parallax
• New type II Cepheids from VVV data towards the Galactic center
• An absolute calibration of the near-infrared Period-Luminosity Relations of Type II Cepheids in the Milky Way and in the Large Magellanic Cloud
• Reassessing the Constraints from SH0ES Extragalactic Cepheid Amplitudes on Systematic Blending Bias
• Type II Cepheids Pulsating in the First Overtone from the OGLE Survey
• Determination of Galactic Rotation Parameters and the Solar Galactocentric Distance Ro from 73 Masers
• Metal-Rich RRc stars in the Carnegie RR Lyrae Survey
• Near-infrared Census of RR Lyrae variables in the Messier 3 globular cluster and the Period--Luminosity Relations
• Extended envelopes around Galactic Cepheids. V. Multi-wavelength and time-dependent analysis of IR excess
• Estimation of the SolarGalactocentric Distance and Rotation Velocity from Near-Solar-Circle Objects
• Distance scale for high-luminosity stars in OB associations and in field with Gaia DR2. Spurious systematic motions
• Galactic resonance rings. Modelling of motions in the wide solar neighborhood
• Influence of the Galactic bar on the kinematics of the disc stars with Gaia EDR3 data
• Photometric study of the star with changing Blazhko effect: TV~Bootis
• The Carnegie-Chicago Hubble Program: Calibration of the Near-Infrared RR Lyrae Period-Luminosity Relation With HST
• A joint 1% calibration of the RR Lyrae & type-II Cepheid Leavitt laws yields homogeneous distances to 93 Galactic globular clusters