WFPC2 Stellar Photometry with HSTphot

By A. Dolphin. 2000

831 citations recorded by the source corpus.

HSTphot, a photometry package designed to handle the undersampled point‐spread functions (PSFs) found in WFPC2 images, is introduced and described, as well as some of the considerations that have to be made in order to obtain accurate PSF‐fitting stellar photometry with WFPC2 data. Tests of HSTphot’s internal reliability are made using multiple observations of the same field, and tests of external reliability are made by comparisons with DoPHOT reductions of the same data.

Subfields: Astronomy and Astrophysics, Instrumentation

View Paper: https://www.semanticscholar.org/paper/52f72978f69c2dc384498de9e84062c97737c4d5

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Citations in the corpus

THE GHOSTS SURVEY. I. HUBBLE SPACE TELESCOPE ADVANCED CAMERA FOR SURVEYS DATA (2011, methodology): “We used the ACS module of dolphot (Dolphin 2000, a modified version of HSTphot) to identify stars and for photometric measurements.”
THE ACS NEARBY GALAXY SURVEY TREASURY. VIII. THE GLOBAL STAR FORMATION HISTORIES OF 60 DWARF GALAXIES IN THE LOCAL VOLUME (2011, methodology): “Using the ANGST data reduction pipeline, we performed photometry on each image with HSTPHOT2 (Dolphin 2000), designed for WFPC2 images, and DOLPHOT3, running in its ACS-optimized mode, for ACS observations, providing for a uniform treatment of all data.”
The search for failed supernovae with the Large Binocular Telescope: confirmation of a disappearing star (2016, methodology): “We calculated PSF magnitudes for the new HST data using the software package dolphot 2.0 (Dolphin 2000)1 with the same parameter settings as in Adams & Kochanek (2015).”
THE STAR FORMATION HISTORIES OF LOCAL GROUP DWARF GALAXIES. I. HUBBLE SPACE TELESCOPE/WIDE FIELD PLANETARY CAMERA 2 OBSERVATIONS (2014, methodology): “Even less is known about the the dSphs in the M31 system, where only recently has HST imaging captured the first oldest MSTOs in two M31 satellites, Andromeda II and Andromeda XVI (Weisz et al. Submitted).”
THE YELLOW SUPERGIANT PROGENITOR OF THE TYPE II SUPERNOVA 2011dh IN M51 (2011, methodology): “The WFPC2 images were processed and analysed using the HSTphot package (Dolphin 2000).”
Leo A: A Late-blooming Survivor of the Epoch of Reionization in the Local Group (2007, methodology): “The pipeline-processed data were combined using MultiDrizzle to eliminate cosmic rays, and photometered using DOLPHOT, a version of HSTPHOT (Dolphin 2000) incorporating the best available ACS calibrations.”
Tip of the Red Giant Branch Distances. II. Zero-Point Calibration (2007, methodology): “Conversion from the HST flight system to the JohnsonCousins system has been performed using the recipes presented in Sirianni et al. (2005) for ACS and those in Dolphin (2000a) and Holtzman et al. (1995) for WFPC2.”
New distances to galaxies in the Centaurus A group (2002, methodology): “Charge-transfer efficiency (CTE) corrections and calibrations were then applied, which are based on the Dolphin (2000b) formulae, producing V I photometry for all stars detected in both images.”
DISCOVERY, PROGENITOR AND EARLY EVOLUTION OF A STRIPPED ENVELOPE SUPERNOVA iPTF13bvn (2013, methodology): “We perform PSF photometry on the HST/ACS images with DOLPHOT (Dolphin 2000).”
THE NATURE OF STARBURSTS. I. THE STAR FORMATION HISTORIES OF EIGHTEEN NEARBY STARBURST DWARF GALAXIES (2010, methodology): “The photometry output of DOLPHOT and HSTphot includes a characterization of the quality of each point source including the sharpness of the source, the degree of crowding, and the quality of the fit, etc; a detailed explanation of these parameters can be found in Dolphin (2000).”
THE ACS NEARBY GALAXY SURVEY TREASURY (2007, methodology): “Photometry is performed using HSTphot (Dolphin 2000), a predecessor of DOLPHOT that is optimized for WFPC2 images.”
The Charge‐Transfer Efficiency and Calibration of WFPC2 (2000, methodology): “Summary An HSTphot-based CTE and zero point correction study, based on the Omega Cen and NGC 2419 observations, attempts to accomplish two goals.”
Tip of the Red Giant Branch Distances. I. Optimization of a Maximum Likelihood Algorithm (2006, methodology): “The stellar photometry was donewith the software HSTphot (Dolphin 2000) in the course of the snapshot programs with artificial star MAKAROV ET AL.2736 Vol. 132 photometry added.”
Cepheid Calibrations from the Hubble Space Telescope of the Luminosity of Two Recent Type Ia Supernovae and a Redetermination of the Hubble Constant (2004, methodology): “The estimated dimming of Cepheids observed byWFPC2 due to imperfect CTE reached 0.05 mag after 8 yr of radiation damage in orbit by the time NGC 3982 was observed (Whitmore et al. 1999; Dolphin 2000).”
Deviations from the Local Hubble Flow. I. The Tip of the Red Giant Branch as a Distance Indicator (2002, methodology): “The final stellar magnitudes are calibrated using the charge-transfer efficiency and zero-point corrections derived in Dolphin (2000a).”
COSMICFLOWS-2: THE DATA (2013, methodology): “The stellar photometry uses a program developed by one of us: HSTPHOT with WFPC2 images and the updated DOLPHOT with ACS images (Dolphin 2000)1.”
Numerical methods of star formation history measurement and applications to seven dwarf spheroidals (2001, neutral): “All were reduced identically with HSTphot and the CMD analysis program.”