Results 1 to 10 of about 1,014 (183)
JWST Photometry of Globular Cluster Populations in MACS0417.5−1154
The Astrophysical JournalDeep JWST imaging of the massive galaxy cluster MACS0417.5−1154, at redshift z = 0.443, reveals a huge population of globular clusters (GCs) and ultracompact dwarfs (UCDs) primarily distributed around its single central giant brightest cluster galaxy ...
William E. Harris +10 more
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Deep photometry of the Draco dwarf spheroidal galaxy [PDF]
The Astronomical Journal, 1986 We report the results of deep CCD photometry of two overlapping fields in the Draco dwarf spheroidal galaxy. We find (B-V)o,g = m0.69, indicating a mean [Fe/H] = −2.0. The width of the giant branch below the horizontal branch is somewhat wider than our observational errors permit, from which we infer there is a spread in metallicities amongst the Draco
Bruce W. Carney, P. Seitzer
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Photo-z Estimation with Normalizing Flow
The Astrophysical JournalAccurate photometric redshift (photo- z ) estimation is a key challenge in cosmology, as uncertainties in photo- z directly limit the scientific return of large-scale structure and weak lensing studies, especially in upcoming Stage IV surveys.
Yiming Ren +8 more
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PEARLS: Near-infrared Photometry in the JWST North Ecliptic Pole Time Domain Field
The Astrophysical Journal Supplement Series, 2023 We present near-infrared (NIR) ground-based Y , J , H , and K imaging obtained in the James Webb Space Telescope (JWST) North Ecliptic Pole Time Domain Field (NEP TDF) using the MMT-Magellan Infrared Imager and Spectrometer on the MMT.
Christopher N. A. Willmer +25 more
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The Structure of Galaxies I: Surface Photometry Techniques [PDF]
Publications of the Astronomical Society of Australia, 2012 AbstractThis project uses the 2MASS all-sky image database to study the structure of galaxies over a range of luminosities, sizes and morphological types. This first paper in this series will outline the techniques, reliability and data products to our surface photometry program.
Schombert, James, Smith, Anna K.
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pop-cosmos: A Comprehensive Picture of the Galaxy Population from COSMOS Data
The Astrophysical Journal Supplement SeriesWe present pop-cosmos : a comprehensive model characterizing the galaxy population, calibrated to 140,938 ( r < 25 selected) galaxies from the Cosmic Evolution Survey (COSMOS) with photometry in 26 bands from the ultraviolet to the infrared. We construct
Justin Alsing +6 more
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Surface Photometry of Spiral Galaxy NGC 5005 and Elliptical Galaxy NGC 4278
مجلة بغداد للعلوم, 2018 Two galaxies have been chosen, spiral galaxy NGC 5005 and elliptical galaxy NGC 4278 to study their photometric properties by using surface photometric techniques with griz-Filters. Observations are obtained from the Sloan Digital Sky Survey (SDSS).
Baghdad Science Journal
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The Astrophysical Journal Supplement SeriesWe present NIRCam and NIRISS modules for DOLPHOT, a widely used crowded-field stellar photometry package. We describe details of the modules including pixel masking, astrometric alignment, star finding, photometry, catalog creation, and artificial star ...
Daniel R. Weisz +40 more
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The Astrophysical JournalTraditional spectral energy distribution (SED)–fitting methods for stellar mass estimation face persistent challenges including systematic biases and computational constraints.
Vahid Asadi +2 more
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3D-Herschel: Constraining Dust Emission with Panchromatic Modeling of 3D-HST Galaxies
The Astrophysical JournalWe present 3D-Herschel, a new publicly released 0.3–350 μ m photometric catalog that combines deblended Herschel far-infrared (FIR) imaging with the CANDELS/3D-HST legacy fields to probe the dust-obscured Universe. Using the 17-parameter Bayesian fitting
Seamus McNulty +11 more
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