The Carnegie Hubble Program

Abstract

We present an overview of and preliminary results from an ongoing comprehensive program that has a goal of determining the Hubble constant to a systematic accuracy of 2%. As part of this program, we are currently obtaining 3.6 micron data using the Infrared Array Camera (IRAC) on Spitzer, and the program is designed to include JWST in the future. We demonstrate that the mid-infrared period-luminosity relation for Cepheids at 3.6 microns is the most accurate means of measuring Cepheid distances to date. At 3.6 microns, it is possible to minimize the known remaining systematic uncertainties in the Cepheid extragalactic distance scale. We discuss the advantages of 3.6 micron observations in minimizing systematic effects in the Cepheid calibration of the Hubble constant including the absolute zero point, extinction corrections, and the effects of metallicity on the colors and magnitudes of Cepheids. We are undertaking three independent tests of the sensitivity of the mid-IR Cepheid Leavitt Law to metallicity, which when combined will allow a robust constraint on the effect. Finally, we are providing a new mid-IR Tully-Fisher relation for spiral galaxies.

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• Toward a New Distance to the Active Galaxy NGC 4258: II. Centripetal Accelerations and Investigation of Spiral Structure
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Cited by in corpus (48)

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• The Carnegie Supernova Project: Absolute Calibration and the Hubble Constant
• From Spitzer Galaxy Photometry to Tully-Fisher Distances
• The Carnegie Hubble Program: The Distance and Structure of the SMC as Revealed by Mid-infrared Observations of Cepheids
• A blinded determination of $H_0$ from low-redshift Type Ia supernovae, calibrated by Cepheid variables
• Final Targeting Strategy for the SDSS-IV APOGEE-2N Survey
• The Carnegie Hubble Program: The Leavitt Law at 3.6 and 4.5 micron in the Milky Way
• Palomar Gattini-IR: Survey overview, data processing system, on-sky performance and first results
• Calibration of the Mid-Infrared Tully-Fisher Relation
• An Improved Calibration of the Wavelength Dependence of Metallicity on the Cepheid Leavitt law
• The Eclipsing Binary Cepheid OGLE-LMC-CEP-0227 in the Large Magellanic Cloud: pulsation modelling of light and radial velocity curves
• Redshift-Independent Distances in the NASA/IPAC Extragalactic Database: Methodology, Content and Use of NED-D
• An accurate measurement of the baryonic Tully-Fisher relation with heavily gas-dominated ALFALFA galaxies
• Classical Cepheid period-Wesenheit-metallicity relation in the Gaia bands
• The Mid-Infrared Tully-Fisher Relation: Calibration of the SNIa Scale and Ho
• On the Application of Wesenheit Function in Deriving Distance to Galactic Cepheids
• High-precision distance measurements with classical pulsating stars
• Cosmicflows-2: SNIa Calibration and H0
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• A New Cepheid Distance Measurement and Method for NGC 6822
• The Carnegie Chicago Hubble Program: The Mid-Infrared Colours of Cepheids and the Effect of Metallicity on the CO Band-head at $4.6\mu$m
• The Carnegie Hubble Program: The Infrared Leavitt Law in IC 1613
• The mid-infrared Tully-Fisher relation: Spitzer Surface Photometry
• The horizontal branch luminosity vs metallicity in M31 globular clusters
• CORS Baade-Wesselink distance to the LMC NGC 1866 blue populous cluster
• The Carnegie RR Lyrae Program: Mid-infrared Period-Luminosity relations of RR Lyrae stars in Reticulum
• The Metallicity Dependence of the Cepheid P-L Relation in M101
• Galactic open cluster Cepheids -- a census based on Gaia EDR3
• Distance Probes of Dark Energy
• On the Form of the Spitzer Leavitt Law and its Dependence on Metallicity
• Theoretical Cepheid Period-Luminosity And Period-Color Relations In Spitzer IRAC Bands
• Mathematical Underpinnings of the Multi-Wavelength Structure of the TRGB
• Young and Intermediate-age Distance Indicators
• Geometry of the Large Magellanic Cloud Using Multi- wavelength Photometry of Classical Cepheids
• The mid-infrared Leavitt Law for Classical Cepheids in the Magellanic Clouds
• Search for Classical Cepheids in Galactic Open Clusters and Calibration of the Period Wesenheit Metallicity Relation in the Gaia Bands
• Bimodality of Galaxy Disk Central Surface Brightness Distribution in the Spitzer 3.6 micron band
• Testing Distance Estimators with the Fundamental Manifold
• Tully-Fisher Relation of Late-type Galaxies at $0.6\le z\le 2.5$
• Time-Series Surveys and Pulsating Stars: The Near-Infrared Perspective
• The first Palomar Gattini-IR catalog of J-band light curves: construction and public data release
• Evidence for Photometric Contamination in Key Observations of Cepheids in the Benchmark Galaxy IC 1613
• Asteroseismology, standard candles and the Hubble Constant: what is the role of asteroseismology in the era of precision cosmology?
• Cepheid Metallicity in the Leavitt Law (C--MetaLL) survey: VIII. High-Resolution IGRINS Spectroscopy of 23 Classical Cepheids: Validating NIR Abundances