The Panchromatic Hubble Andromeda Treasury: Triangulum Extended Region (PHATTER) I. Ultraviolet to Infrared Photometry of 22 Million Stars in M33

Abstract

We present panchromatic resolved stellar photometry for 22 million stars in the Local Group dwarf spiral Triangulum (M33), derived from Hubble Space Telescope (HST) observations with the Advanced Camera for Surveys (ACS) in the optical (F475W, F814W), and the Wide Field Camera 3 (WFC3) in the near ultraviolet (F275W, F336W) and near-infrared (F110W, F160W) bands. The large, contiguous survey area covers $\sim$14 square kpc and extends to 3.5 kpc (14 arcmin, or 1.5-2 scale lengths) from the center of M33. The PHATTER observing strategy and photometry technique closely mimic those of the Panchromatic Hubble Andromeda Treasury (PHAT), but with updated photometry techniques that take full advantage of all overlapping pointings (aligned to within $<$5-10 milliarcseconds) and improved treatment of spatially-varying point spread functions. The photometry reaches a completeness-limited depth of F475W$\sim$28.5 in the lowest surface density regions observed in M33 and F475W$\sim$26.5 in the most crowded regions found near the center of M33. We find the young populations trace several relatively tight arms, while the old populations show a clear, looser two-armed structure. We present extensive analysis of the data quality including artificial star tests to quantify completeness, photometric uncertainties, and flux biases. This stellar catalog is the largest ever produced for M33, and is publicly available for download by the community.

arXiv comment38 pages, 6 tables, 25 figures, accepted for publication in ApJS

References in corpus (80)

• Array Programming with NumPy
• Astropy: A Community Python Package for Astronomy
• The NumPy array: a structure for efficient numerical computation
• Gaia Data Release 2. Summary of the contents and survey properties
• The Astropy Project: Building an inclusive, open-science project and status of the v2.0 core package
• Measuring Reddening with SDSS Stellar Spectra and Recalibrating SFD
• MESA Isochrones and Stellar Tracks (MIST). I: Solar-Scaled Models
• WFPC2 Stellar Photometry with HSTphot
• astroquery: An Astronomical Web-Querying Package in Python
• Star counts in the Galaxy. Simulating from very deep to very shallow photometric surveys with the TRILEGAL code
• Numerical Methods of Star Formation History Measurement and Applications to Seven Dwarf Spheroidals
• A Survey of Local Group Galaxies Currently Forming Stars. I. UBVRI Photometry of Stars in M31 and M33
• The Panchromatic Hubble Andromeda Treasury
• The formation and assembly history of the Milky Way revealed by its globular cluster population
• The Masses of the Milky Way and Andromeda galaxies
• Galaxy Disks
• Giant Molecular Clouds in M33 - I. BIMA All Disk Survey
• An Empirical Pixel-Based Correction for Imperfect CTE. I. HST's Advanced Camera for Surveys
• The Panchromatic Hubble Andromeda Treasury X. Ultraviolet to Infrared Photometry of 117 Million Equidistant Stars
• Giant Molecular Clouds in M33 -- II. High Resolution Observations
• The Molecular Gas Distribution and Schmidt Law in M33
• The large-scale structure of the halo of the Andromeda galaxy II. Hierarchical structure in the Pan-Andromeda Archaeological Survey
• Molecular and Atomic Gas in the Local Group Galaxy M33
• The M33 Metallicity Project: Resolving the Abundance Gradient Discrepancies in M33
• A 2-3 billion year old major merger paradigm for the Andromeda galaxy and its outskirts
• The Andromeda galaxy's most important merger about 2 billion years ago as M32's likely progenitor
• Panoramic GALEX FUV and NUV imaging of M31 and M33
• High Resolution Molecular Gas Maps of M33
• The Panchromatic Hubble Andromeda Treasury XI: The Spatially-Resolved Recent Star Formation History of M31
• The Detection of Inside-out Disk Growth in M33
• Star formation in M33: multiwavelength signatures across the disk
• The Contribution of Field OB Stars to the Ionization of the Diffuse Ionized Gas in M33
• First Gaia Dynamics of the Andromeda System: DR2 Proper Motions, Orbits, and Rotation of M31 and M33
• Metal production in M33: space and time variations
• The Panchromatic Hubble Andromeda Treasury VIII: A Wide-Area, High-Resolution Map of Dust Extinction in M31
• The red clump absolute magnitude based on revised Hipparcos parallaxes
• Old-Aged Stellar Population Distance Indicators
• The planetary nebula population of M33 and its metallicity gradient: A look into the galaxy's distant past
• Vaex: Big Data exploration in the era of Gaia
• PHAT Stellar Cluster Survey. II. Andromeda Project Cluster Catalog
• Carbon and oxygen abundance gradients in NGC300 and M33 from optical recombination lines
• Photometric metallicity map of the Large Magellanic Cloud
• PACS and SPIRE photometer maps of M33: First results of the Herschel M33 extended survey (HERM33ES)
• The building up of the disk galaxy M33 and the evolution of the metallicity gradient
• The M33 Variable Star Population Revealed by Spitzer
• The Stellar Populations of M33's Outer Regions IV: Inflow History and Chemical Evolution
• The Stellar Populations of M33's Outer Regions III: Star Formation History
• The photometric properties of a vast stellar substructure in the outskirts of M33
• Observational discovery of the AGB-bump in densely populated color-magnitude diagrams of galaxies and star clusters
• Cool and warm dust emission from M33 (HerM33es)
• Kinematics of the Atomic ISM in M33 on 80 pc scales
• Photometric metallicity map of the Small Magellanic Cloud
• The Outer Regions of the Nearby Sc Galaxies NGC 2403 and M33: Evidence for an Intermediate Age Population at Large Radii
• Luminous and Variable Stars in M31 and M33. IV. Luminous Blue Variables, Candidate LBVs, and the B[e] Supergiants; How to Tell Them Apart
• Luminous and Variable Stars in M31 and M33. III. The Yellow and Red Supergiants and Post-Red Supergiant Evolution
• Planetary nebulae in M33: probes of AGB nucleosynthesis and ISM abundances
• AGB stars as tracers of metallicity and mean age across M33
• Panchromatic Hubble Andromeda Treasury XII. Mapping Stellar Metallicity Distributions in M31
• The Chandra ACIS Survey of M33 (ChASeM33): The final source catalog
• The Stellar Populations of M33's Outer Regions II: Deep ACS Imaging
• Bar imprints on the inner gas kinematics of M33
• Spectroscopic Observation and Analysis of HII regions in M33 with MMT: Temperatures and Oxygen Abundances
• Toward an internally consistent astronomical distance scale
• The Structure and Stellar Content of the Central Region of M33
• Millimeter and Submillimeter Excess Emission in M33 revealed by Planck and LABOCA
• The stellar content of the COSMOS field as derived from morphological and SED based gtar/galaxy Separation
• Spatially Resolved Metal Loss from M31
• A new and unusual LBV-like outburst from a Wolf-Rayet star in the outskirts of M33
• A New, Deep JVLA Radio Survey of M33
• A Deep XMM-Newton Survey of M33: Point Source Catalog, Source Detection and Characterization of Overlapping Fields
• GeV $\gamma$-ray emission from M33 and Arp~299
• Mass-to-Light Ratios of Spatially Resolved Stellar Populations in M31
• Triangulum galaxy viewed by Planck
• Velocity resolved [CII] spectroscopy of the center and the BCLMP302 region of M33 (HerM33es)
• The elusive stellar halo of the Triangulum Galaxy
• Planck Observations of M33
• The Panchromatic Hubble Andromeda Treasury XVII. Examining Obscured Star Formation with Synthetic Ultraviolet Flux Maps in M31
• Keck spectroscopy and Spitzer Space Telescope analysis of the outer disk of the Triangulum Spiral Galaxy M33
• CLUES about M33: the reversed radial stellar age gradient in the outskirts of Triangulum galaxy
• On the Nature of the X-ray Emission from the Ultraluminous X-ray Source, M33 X-8: New Constraints from NuSTAR and XMM-Newton

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• Classifying spectra of emission-line regions with neural networks -- An application to integral field spectroscopic data of M33
• Monitoring the X-ray Variability of Bright X-ray Sources in M33
• A Catalog of Stellar and Dust Properties for 500,000 Stars in the Southwest Bar of the Small Magellanic Cloud
• Testing Evolutionary Models with Red Supergiant and Wolf-Rayet Populations
• Deriving physical parameters of unresolved star clusters. VIII. Limits of aperture photometry for star cluster studies
• The Panchromatic Hubble Andromeda Southern Treasury (PHAST). II. The Spatially Resolved Recent Star Formation History in M31
• The Panchromatic Hubble Andromeda Treasury: Triangulum Extended Region (PHATTER) II. The Spatially Resolved Recent Star Formation History of M33
• Optical Extinctions of Inter-Arm Molecular Clouds in M31: A Pilot Study for the Upcoming CSST Observations
• The Astrophysical Distance Scale: V. A 2% Distance to the Local Group Spiral M33 via the JAGB Method, Tip of the Red Giant Branch, and Leavitt Law
• M^3D: Mosaicking M33 with MUSE datacubes I. Unveiling the diversity of HII regions in M33 with MUSE