Multiwavelength Characterization of the High Mass X-ray Binary Population of M33

Abstract

We present multi-wavelength characterization of 65 high mass X-ray binary (HMXB) candidates in M33. We use the Chandra ACIS survey of M33 (ChASeM33) catalog to select hard X-ray point sources that are spatially coincident with UV-bright point source optical counterparts in the Panchromatic Hubble Andromeda Treasury: Triangulum Extended Region (PHATTER) catalog, which covers the inner disk of M33 at near infrared, optical, and near ultraviolet wavelengths. We perform spectral energy distribution (SED) fitting on multi-band photometry for each point source optical counterpart to measure its physical properties including mass, temperature, luminosity, and radius. We find that the majority of the HMXB companion star candidates are likely B-type main sequence stars, suggesting that the HMXB population of M33 is dominated by Be-XRBs, as is seen in other Local Group galaxies. We use spatially-resolved recent star formation history (SFH) maps of M33 to measure the age distribution of the HMXB candidate sample and the HMXB production rate for M33. We find a bimodal distribution for the HMXB production rate over the last 80 Myr, with a peak at $\sim$10 Myr and $\sim$40 Myr, which match theoretical formation timescales for the most massive HMXBs and Be X-ray binaries (Be-XRBs), respectively. We measure an HMXB production rate of 107$-$136 HMXBs/(M${}_{\odot }$ yr${}^{-1}$) over the last 50 Myr and 150$-$199 HMXBs/(M${}_{\odot }$ yr${}^{-1}$) over the last 80 Myr. For sources with compact object classifications from overlapping NuSTAR observations, we find a preference for giant/supergiant companion stars in BH-HMXBs and main sequence companion stars in neutron star HMXBs (NS-HMXBs).

Accepted for publication in ApJ, 37 pages, 6 figures, 8 tables

References in corpus (29)

• Formation of Double Neutron Star Systems
• Catalogue of high-mass X-ray binaries in the Galaxy ($4^{th}$ edition)
• A 15.65 solar mass black hole in an eclipsing binary in the nearby spiral galaxy Messier 33
• The Panchromatic Hubble Andromeda Treasury X. Ultraviolet to Infrared Photometry of 117 Million Equidistant Stars
• On the formation of Be stars through binary interaction
• The Chemical Enrichment History of the Small Magellanic Cloud and Its Gradients
• The Panchromatic Hubble Andromeda Treasury XI: The Spatially-Resolved Recent Star Formation History of M31
• X-ray Binary Luminosity Function Scaling Relations for Local Galaxies Based on Subgalactic Modeling
• Star formation in M33: multiwavelength signatures across the disk
• The Metallicity Dependence of the High-Mass X-ray Binary Luminosity Function
• The Panchromatic Hubble Andromeda Treasury: Triangulum Extended Region (PHATTER) I. Ultraviolet to Infrared Photometry of 22 Million Stars in M33
• Clustering of Local Group distances: publication bias or correlated measurements? II. M31 and beyond
• M 33 X-7: ChASeM33 reveals the first eclipsing black hole X-ray binary
• Spatially Resolving a Starburst Galaxy at Hard X-ray Energies: NuSTAR, Chandra, AND VLBA Observations of NGC 253
• Chandra ACIS Survey of M33 (ChASeM33): A First Look
• Supernova Remnants in M33: X-ray Properties as Observed by XMM-Newton
• The Panchromatic Hubble Andromeda Treasury: Triangulum Extended Region (PHATTER). III. The Mass Function of Young Star Clusters in M33
• The Ionizing Spectra of Extremely Metal-Poor O Stars: Constraints from the Only HII Region in Leo P
• Phase-resolved spectroscopic analysis of the eclipsing black hole X-ray binary M33 X-7: System properties, accretion, and evolution
• The Panchromatic Hubble Andromeda Treasury: Triangulum Extended Region (PHATTER). IV. Star Cluster Catalog
• Three new high-mass X-ray binaries in the Large Magellanic Cloud
• Interstellar abundances in the neutral and ionized gas of NGC604
• A Deep XMM-Newton Survey of M33: Point Source Catalog, Source Detection and Characterization of Overlapping Fields
• The Triangulum Extended (TREX) Survey: The Stellar Disk Dynamics of M33 as a Function of Stellar Age
• Neutron Stars and Black Holes in the Small Magellanic Cloud: The SMC NuSTAR Legacy Survey
• Multiwavelength Characterization of the High Mass X-ray Binary Population of M31
• A multi-observatory database of X-ray pulsars in the Magellanic Clouds
• The First Candidate Colliding-Wind Binary in M33
• The Masses of Supernova Remnant Progenitors in M33

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