A 0.9% Calibration of the Galactic Cepheid luminosity scale based on Gaia DR3 data of open clusters and Cepheids

Abstract

We have conducted a search for open clusters in the vicinity of classical Galactic Cepheids based on high-quality astrometry from the third data release (DR3) of the ESA mission Gaia to improve the calibration of the Leavitt law (LL). Our approach requires no prior knowledge of existing clusters, allowing us to both detect new host clusters and cross-check previously reported associations. Our Gold sample consists of 34 Cepheids residing in 28 open clusters, including 27 fundamental mode and 7 overtone Cepheids. Three new bona fide cluster Cepheids are reported (V0378 Cen, ST Tau, and GH Lup) and the host cluster identifications for three others (VW Cru, IQ Nor, and SX Vel) are corrected. The fraction of Cepheids occurring in open clusters within 2 kpc of the Sun is $f_{CC,2kpc}=0.088_{-0.019}^{+0.029}$. By combining cluster and field Cepheids, we calibrate the LL for several individual photometric passbands, together with reddening-free Wesenheit magnitudes based on Gaia and HST photometry, while solving for the residual offset applicable to Cepheid parallaxes, $\Delta {\varpi }_{\mathrm{Cep}}$. The most direct comparison of our results with the SH0ES distance ladder yields excellent ($0.3\sigma$) agreement for both the absolute magnitude of a 10d solar metallicity Cepheid in the near-IR HST Wesenheit magnitudes, $M_{H,1}^W=-5.914\pm 0.017$ mag, and the residual parallax offset, $\Delta {\varpi }_{\mathrm{Cep}}=-13\pm 5\mu$as. Using the larger sample of 26 Gold cluster Cepheids and $225$ MW Cepheids with recent Gaia DR3 astrometry and photometry, we determine at solar metallicity $M_{G,1}^W=-6.004\pm 0.019$\,mag and $\Delta {\varpi }_{\mathrm{Cep}}=-19\pm 3\mu$as. These results mark the currently most accurate absolute calibrations of the Cepheid luminosity scale based purely on observations of MW Cepheids.

arXiv comment24 pages, Version accepted in A&A

References in corpus (73)

• Astropy: A Community Python Package for Astronomy
• The Gaia mission
• Binary companions of evolved stars in APOGEE DR14: Search method and catalog of ~5,000 companions
• Correcting for the Effects of Interstellar Extinction
• A Comprehensive Measurement of the Local Value of the Hubble Constant with 1 km/s/Mpc Uncertainty from the Hubble Space Telescope and the SH0ES Team
• A 2.4% Determination of the Local Value of the Hubble Constant
• Large Magellanic Cloud Cepheid Standards Provide a 1% Foundation for the Determination of the Hubble Constant and Stronger Evidence for Physics Beyond LambdaCDM
• Gaia Early Data Release 3: Parallax bias versus magnitude, colour, and position
• Gaia Early Data Release 3: Photometric content and validation
• Cosmic Distances Calibrated to 1% Precision with Gaia EDR3 Parallaxes and Hubble Space Telescope Photometry of 75 Milky Way Cepheids Confirm Tension with LambdaCDM
• Global survey of star clusters in the Milky Way II. The catalogue of basic parameters
• A Gaia DR2 view of the Open Cluster population in the Milky Way
• A distance to the Large Magellanic Cloud that is precise to one per cent
• Astrophysical parameters of Galactic open clusters
• Milky Way Cepheid Standards for Measuring Cosmic Distances and Application to Gaia DR2: Implications for the Hubble Constant
• Painting a portrait of the Galactic disc with its stellar clusters
• New Parallaxes of Galactic Cepheids from Spatially Scanning the Hubble Space Telescope: Implications for the Hubble Constant
• Gaia EDR3 view on Galactic globular clusters
• A million binaries from Gaia eDR3: sample selection and validation of Gaia parallax uncertainties
• Gaia Early Data Release 3 -- Catalogue validation
• Gaia Data Release 3 Properties and validation of the radial velocities
• A First Catalog of Variable Stars Measured by the Asteroid Terrestrial-impact Last Alert System (ATLAS)
• Clusters and mirages: cataloguing stellar aggregates in the Milky Way
• Parallax Systematics and Photocenter Motions of Benchmark Eclipsing Binaries in Gaia EDR3
• The Distribution of the Elements in the Galactic Disk III. A Reconsideration of Cepheids from l = 30 to 250 Degrees
• The influence of chemical composition on the properties of Cepheid stars. II-The iron content
• Gaia Early Data Release 3: Summary of the contents and survey properties
• On the fine structure of the Cepheid metallicity gradient in the Galactic thin disk
• A new method for unveiling Open Clusters in Gaia: new nearby Open Clusters confirmed by DR2
• On the Effect of Rotation on Populations of Classical Cepheids II. Pulsation Analysis for Metallicities 0.014, 0.006, and 0.002
• Confirmation of the $Gaia$ DR2 parallax zero-point offset using asteroseismology and spectroscopy in the $Kepler$ field
• Distances and parallax bias in Gaia DR2
• OGLE-ing the Magellanic System: Optical Reddening Maps of the Large and Small Magellanic Cloud from Red Clump Stars
• Cluster Cepheids with High Precision Gaia Parallaxes, Low Zeropoint Uncertainties, and Hubble Space Telescope Photometry
• The effect of metallicity on the Cepheid Period-Luminosity relation from a Baade-Wesselink analysis of Cepheids in the Galaxy and in the Small Magellanic Cloud
• A re-classification of Cepheids in the Gaia Data Release 2
• The Distribution of the Elements in the Galactic Disk II. Azimuthal and Radial Variation in Abundances from Cepheids
• Improving the open cluster census. I. Comparison of clustering algorithms applied to Gaia DR2 data
• Hunting for open clusters in Gaia EDR3: $628$ new open clusters found with OCfinder
• Gaia DR3: Specific processing and validation of all-sky RR Lyrae and Cepheid stars -- The Cepheid sample
• The Cepheid period -- luminosity -- metallicity relation based on Gaia DR2 data
• Cepheids in Open Clusters: An 8-D All-sky Census
• Validation of the accuracy and precision of Gaia EDR3 parallaxes with globular clusters
• On the alpha-element gradients of the Galactic thin disk using Cepheids
• The Milky Way Cepheid Leavitt law based on Gaia DR2 parallaxes of companion stars and host open cluster populations
• The effect of metallicity on Cepheid Period-Luminosity relations from a Baade-Wesselink analysis of Cepheids in the Milky Way and Magellanic Clouds
• An Improved Calibration of the Wavelength Dependence of Metallicity on the Cepheid Leavitt law
• Very accurate Distances and Radii of Open Cluster Cepheids from a Near-Infrared Surface Brightness Technique
• The Parallax Zero-Point of Gaia Early Data Release 3 from LAMOST Primary Red Clump Stars
• New light on the Gaia DR2 parallax zero-point: influence of the asteroseismic approach, in and beyond the Kepler field
• Gaia EDR3 Parallax Zero-point Offset based on W Ursae Majoris-type Eclipsing Binaries
• An estimation of the Gaia EDR3 parallax bias from stellar clusters and Magellanic Clouds data
• Fundamental parameters of Cepheids. V. Additional photometry and radial velocity for southern Cepheids
• The influence of metallicity on the Leavitt Law from geometrical distances of Milky Way and Magellanic Clouds Cepheids
• Multiplicity of Galactic Cepheids and RR Lyrae stars from Gaia DR2 -- II. Resolved common proper motion pairs
• New Open Cluster candidates Found in Galactic Disk Using Gaia DR2/EDR3 Data
• Classical Cepheid period-Wesenheit-metallicity relation in the Gaia bands
• On Cepheid Distance Scale Bias due to Stellar Companions and Cluster Populations
• Vetting Galactic Leavitt Law Calibrators using Radial Velocities: On the Variability, Binarity, and Possible Parallax Error of 19 Long-period Cepheids
• Classical Cepheids in the Galactic outer ring R1R2'
• A search for open cluster Cepheids in the Galactic plane
• Gaia Data Release 3: The Gaia Andromeda Photometric Survey
• A tale of caution: the tails of NGC 752 are much longer than claimed
• Current Challenges in Cepheid Distance Calibrations Using Gaia EDR3
• Cepheids in M31 - The PAndromeda Cepheid sample
• Relativistic corrections for measuring Hubble's constant to 1% using stellar standard candles
• A revisited study of Cepheids in open clusters in the Gaia era
• A spatially dependent correction of Gaia EDR3 parallax zero-point offset based on 0.3 million LAMOST DR8 giant stars
• Galactic open cluster Cepheids -- a census based on Gaia EDR3
• On the dynamical evolution of Cepheids in star clusters
• Cluster membership for the long period Cepheid calibrator SV Vul
• X-ray Detection of the Cluster Containing the Cepheid S Mus
• The 800pc long tidal tails of the Hyades star cluster: Possible discovery of candidate epicyclic overdensities from an open star cluster

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