Results 1 to 10 of about 30,917 (231)
Crowded-field photometry from HST-imaging [PDF]
Astronomy and Astrophysics Supplement Series, 1997 We present a thorough investigation of stellar photometry based on HST imaging of crowded fields at 85 and 10 arcsec from the centre of the high-surface brightness elliptical M32.
Sodemann, Marianne, Thomsen, Bjarne
core +5 more sources
3D-HST WFC3-SELECTED PHOTOMETRIC CATALOGS IN THE FIVE CANDELS/3D-HST FIELDS: PHOTOMETRY, PHOTOMETRIC REDSHIFTS, AND STELLAR MASSES [PDF]
The Astrophysical Journal Supplement Series, 2014 Catalogs and images described are publicly available at the 3D-HST website: http://3dhst.research.yale.edu. v2: Updated to match version accepted by ApJS.
Rosalind E. Skelton +26 more
openalex +9 more sources
HST NIC3 Photometry of Metal-Rich Globular Clusters Palomar 6, Liller 1, and 47 Tuc (NGC 104) [PDF]
Journal of Astronomy and Space Sciences, 2004 We present HST NIC3 photometry of metal-rich globular clusters Palomar 6, Liller 1 and 47 Tuc (NGC 104). We discuss the interstellar reddening law for the HST NICMOS F110W/F160W photometric system which depends on the temperature of the source.
Jae-Woo Lee
doaj +3 more sources
HST photometry: Can UV colors probe the galaxy ages? [PDF]
Astronomy and Astrophysics Supplement Series, 1997 We present grids of magnitudes and colours for the WFPC2 of the refurbished HST using pass- bands from the far UV to the near infrared, i.e. the lters F170W, F218W, F255W, F300W, F336W, F439W, F450W, F555W, F606W, F702W, F814W, and F850LP. In addition to this, we consider also the lters F150W+F130LP, F175W, F220W and F342W of the old HST in the FOC ...
C. Chiosi, A. Vallenari, A. Bressan
openalex +2 more sources
Faint Photometry with the HST Wide Field Camera [PDF]
International Astronomical Union Colloquium, 1993 AbstractA series of 40 HST WFC exposures in v (F555W) and i (F785LP) have been obtained of two fields in M81, in order to search for Cepheid variables. This has provided an ideal opportunity to compare how the photometry programs DoPHOT and DAOPHOT cope with undersampled images, and present our ‘best solution’ to the problem of reducing WFC photometry ...
Shaun M. G. Hughes
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The HST Legacy Archival Uniform Reduction of Local Group Imaging (LAURELIN). I. Photometry and Star Formation Histories for 36 Ultra-faint Dwarf Galaxies [PDF]
The Astrophysical JournalWe present uniformly measured resolved stellar photometry and star formation histories (SFHs) for 36 nearby (≲400 kpc) ultra-faint dwarf galaxies (UFDs; −7.1 ≤ M _V ≤ +0.0) from new and archival Hubble Space Telescope (HST) imaging.
Meredith J. Durbin +16 more
doaj +3 more sources
A 1.3% distance to M33 from HST Cepheid photometry
, 2023 We present a low-dispersion period-luminosity relation (PL) based on 154 Cepheids in Messier 33 (M33) with Hubble Space Telescope (HST) photometry from the PHATTER survey. Using high-quality ground-based light curves, we recover Cepheid phases and amplitudes for multi-epoch HST data and we perform template fitting to derive intensity-averaged mean ...
Louise Breuval +9 more
openalex +4 more sources
deepCR on ACS/WFC: Cosmic-Ray Rejection for HST ACS/WFC Photometry
Research Notes of the AAS, 2021 Abstract deepCR is a deep-learning-based cosmic-ray rejection algorithm previously demonstrated to be superior to state-of-the-art LACosmic on Hubble Space Telescope (HST) Advanced Camera for Surveys (ACS)/WFC F606W imaging data. In this research note, we present a new deepCR model for use on all filters of HST ACS/WFC.
K. J. Kwon, Keming Zhang, J. S. Bloom
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Measuring Metallicities with HST/WFC3 photometry [PDF]
, 2013 We quantified and calibrated the metallicity and temperature sensitivities of colors derived from nine Wide Field Camera 3 (WFC3) filters aboard the Hubble Space Telescope using Dartmouth isochrones and Kurucz atmospheres models. The theoretical isochrone colors were tested and calibrated against observations of five well studied galactic clusters: M92,
Teresa L. Ross +6 more
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Unusual void galaxy DDO\,68: implications of the \textit{HST} resolved photometry [PDF]
Monthly Notices of the Royal Astronomical Society, 2016 DDO68 (UGC5340) is an unusual dwarf galaxy with extremely low gas metallicity (12+log(O/H) = 7.14) residing in the nearby Lynx-Cancer void. Despite its apparent isolation, it shows both optical and HI morphological evidence for strong tidal disturbance. Here, we study the resolved stellar populations of DDO68 using deep images from the HST archive.
D. I. Makarov +3 more
openalex +4 more sources