The First DIRECT Distance Determination to a Detached Eclipsing Binary in M33

Abstract

We present the first direct distance determination to a detached eclipsing binary in M33, which was found by the DIRECT Project. Located in the OB 66 association at coordinates (alpha, delta)=(01:33:46.17,+30:44:39.9) for J2000.0, it was one of the most suitable detached eclipsing binaries found by DIRECT for distance determination, given its apparent magnitude and orbital period. We obtained follow-up BV time series photometry, JHKs photometry and optical spectroscopy from which we determined the parameters of the system. It contains two O7 main sequence stars with masses of 33.4+/-3.5 Mo and 30.0+/-3.3 Mo and radii of 12.3+/-0.4 Ro and 8.8+/-0.3 Ro, respectively. We derive temperatures of 37000+/-1500 K and 35600+/-1500 K. Using BVRJHKs photometry for the flux calibration, we obtain a distance modulus of 24.92+/-0.12 mag (964+/-54 kpc), which is ~0.3 mag longer than the Key Project distance to M33. We discuss the implications of our result and the importance of establishing M33 as an independent rung on the cosmological distance ladder.

36 pages, 12 figures, accepted for publication in ApJ

References in corpus (36)

• Final Results from the Hubble Space Telescope Key Project to Measure the Hubble Constant
• Spectral Irradiance Calibration in the Infrared. XIV: the Absolute Calibration of 2MASS
• A Grid of NLTE Line-Blanketed Model Atmospheres of O-type Stars
• Atmospheric NLTE-Models for the Spectroscopic Analysis of Blue Stars with Winds. II. Line-Blanketed Models
• A Survey of Local Group Galaxies Currently Forming Stars. I. UBVRI Photometry of Stars in M31 and M33
• ESI, a new Keck Observatory echellette spectrograph and imager
• A UBVR CCD Survey of the Magellanic Clouds
• Ten eclipsing binaries in the Small Magellanic Cloud: fundamental parameters and SMC distance
• Detailed Analysis of Early to Late-Time Spectra of Supernova 1993J
• The Mauna Kea Observatories Near-Infrared Filter Set. III. Isophotal Wavelengths and Absolute Calibration
• The Physical Properties and Effective Temperature Scale of O-type Stars as a Function of Metallicity. II. Analysis of 20 More Magellanic Cloud Stars, and Results from the Complete Sample
• The Distance to the Large Magellanic Cloud from the Eclipsing Binary HV2274
• Astrometry with Hubble Space Telescope: A Parallax of the Fundamental Distance Calibrator RR Lyrae
• The Geometric Distance and Proper Motion of the Triangulum Galaxy (M33)
• A Fast Algorithm for Cosmic Rays Removal from Single Images
• First Determination of the Distance and Fundamental Properties of an Eclipsing Binary in The Andromeda Galaxy
• CHORIZOS: a CHi-square cOde for parameteRized modelIng and characteriZation of phOtometry and Spectrophotometry
• The Planetary Nebula System of M33
• RR Lyrae Variables in M33. I. Evidence For a Field Halo Population
• The Physical Properties and Effective Temperature Scale of O-type Stars as a Function of Metallicity. I. A Sample of 20 Stars in the Magellanic Clouds
• Determining the Location of the Tip of the Red Giant Branch in Old Stellar Populations: M33, Andromeda I & II
• The distance of M33 and the stellar population in its outskirts
• Fundamental Properties and Distances of LMC Eclipsing Binaries: IV. HV 5936
• The DIRECT Project: Influence of Blending on the Cepheid Distance Scale. I. Cepheids in M31
• Determination of the Distance to M33 Based on the Tip of the Red Giant Branch and the Red Clump
• Quantitative H and K band spectroscopy of Galactic OB-stars at medium resolution
• The Stellar Populations in the Outer Regions of M33. I. Metallicity Distribution Function
• Photometric Solutions for Semi-Detached Eclipsing Binaries: Selection of Distance Indicators in the Small Magellanic Cloud
• DIRECT Distances to Nearby Galaxies Using Detached Eclipsing Binaries and Cepheids. IX. Variables in the Field M31Y Discovered with Image Subtraction
• DIRECT Distances to Nearby Galaxies Using Detached Eclipsing Binaries and Cepheids. VI. Variables in the Central Part of M33
• Determination of the Distance to M33 Based on Single Epoch I-band HST Observations of Cepheids
• DIRECT Distances to Nearby Galaxies Using Detached Eclipsing Binaries and Cepheids. III. Variables in the Field M31C
• DIRECT Distances to Nearby Galaxies Using Detached Eclipsing Binaries and Cepheids. IV. Variables in the Field M31D
• DIRECT Distances to Nearby Galaxies Using Detached Eclipsing Binaries and Cepheids. VII. Additional Variables in the Field M33A Discovered with Image Subtraction
• DIRECT Distances to Nearby Galaxies Using Detached Eclipsing Binaries and Cepheids. VIII. Additional Variables in the Field M33B Discovered with Image Subtraction
• DIRECT Distances to Nearby Galaxies Using Detached Eclipsing Binaries and Cepheids. V. Variables in the Field M31F

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• Photometric and Spectroscopic Studies of Massive Binaries in the Large Magellanic Cloud. I. Introduction and Orbits for Two Detached Systems: Evidence for a Mass Discrepancy?
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• SN 1993J VLBI (IV): A Geometric Determination of the Distance to M81 with the Expanding Shock Front Method
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• The UK Infrared Telescope M33 monitoring project. V. The star formation history across the galactic disc
• Census of Self-Obscured Massive Stars in Nearby Galaxies with Spitzer: Implications for Understanding the Progenitors of SN 2008S-Like Transients
• Near-infrared Mira Period-Luminosity Relations in M33
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• The UK Infrared Telescope M33 monitoring project. I. Variable red giant stars in the central square kiloparsec
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• Mass Transfer in Close, Rapidly Accreting Protobinaries: An Origin for Massive Twins?
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• Fundamental Parameters of four Massive Eclipsing Binaries in Westerlund 1
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• The Recent Stellar Archeology of M31 - The Nearest Red Disk Galaxy
• The M33 Synoptic Stellar Survey. II. Mira Variables
• Spitzer Point Source Catalogs of $\sim 300,000$ Stars in Seven Nearby Galaxies
• Absolute dimensions of detached eclipsing binaries. III. The metallic-lined system YZ Cassiopeiae
• The Value-Added Catalog of ASAS-SN Eclipsing Binaries: Parameters of Thirty Thousand Detached Systems
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• Properties of M31. V: 298 Eclipsing Binaries from PAndromeda
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• Tracing the structure of the Milky Way with detached eclipsing binaries from the VVV survey - I. The method and initial results
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• The Stellar Archeology of the M33 Disk: Recent Star-Forming History and Constraints on the Timing of an Interaction with M31
• Towards early-type eclipsing binaries as extragalactic milestones: II. NLTE spectral analysis and stellar parameters of the detached O-type system OGLE-LMC-ECL-06782 in the LMC
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