Results 11 to 20 of about 308,461 (247)

III. On photometry in connexion with physical optics [PDF]

open access: greenThe London, Edinburgh, and Dublin Philosophical Magazine and Journal of Science
n ...
Richard Potter
semanticscholar   +5 more sources

DDO68 C: The Actual Appearance of a Ghost Satellite Dwarf through Adaptive Optics at the Large Binocular Telescope [PDF]

open access: yesThe Astrophysical Journal Letters, 2023
Through adaptive optics (AO) imaging with the SOUL+LUCI instrument at the Large Binocular Telescope we were able to resolve, for the first time, individual stars in the gas-rich galaxy DDO68 C. This system was already suggested to be interacting with the
Francesca Annibali   +9 more
doaj   +2 more sources

Quantifying the Contamination from nearby Stellar Companions in Gaia DR3 Photometry [PDF]

open access: yesThe Astronomical Journal
Identifying and removing binary stars from stellar samples is a crucial but complicated task. Regardless of how carefully a sample is selected, some binaries will remain and complicate interpretation of results, especially via flux contamination of ...
Kendall Sullivan   +3 more
doaj   +2 more sources

OGLE-2016-BLG-1195Lb: A Sub-Neptune Beyond the Snow Line of an M-dwarf Confirmed by Keck Adaptive Optics

open access: yesThe Astronomical Journal, 2023
We present the analysis of high-resolution follow-up observations of OGLE-2016-BLG-1195 using Laser Guide Star Adaptive Optics with Keck, seven years after the event’s peak.
Aikaterini Vandorou   +20 more
doaj   +2 more sources

FORECASTOR. I. Finding Optics Requirements and Exposure Times for the Cosmological Advanced Survey Telescope for Optical and UV Research Mission [PDF]

open access: yesThe Astronomical Journal
The Cosmological Advanced Survey Telescope for Optical and ultraviolet Research (CASTOR) is a proposed Canadian-led 1 m class space telescope that will carry out ultraviolet and blue optical wide-field imaging, spectroscopy, and photometry.
Isaac Cheng   +23 more
doaj   +2 more sources

Optimal Stellar Photometry for Multi-conjugate Adaptive Optics Systems Using Science-based Metrics [PDF]

open access: bronze, 2017
We present a detailed discussion of how to obtain precise stellar photometry in crowded fields using images from multi-conjugate adaptive optics (MCAO) systems, with the intent of informing the scientific development of this key technology for the ...
Paolo Turri   +7 more
openalex   +3 more sources

PROBABILITY OF THE PHYSICAL ASSOCIATION OF 104 BLENDED COMPANIONS TOKEPLEROBJECTS OF INTEREST USING VISIBLE AND NEAR-INFRARED ADAPTIVE OPTICS PHOTOMETRY [PDF]

open access: green, 2016
We determine probabilities of physical association for stars in blended Kepler Objects of Interest (KOIs), and find that of companions within ∼4″ are consistent with being physically unassociated with their primary.
Dani Atkinson   +5 more
openalex   +3 more sources

Binary Star Differential Photometry Using the Adaptive Optics System at Mount Wilson Observatory [PDF]

open access: bronze, 2000
Theo A. ten Brummelaar   +6 more
openalex   +2 more sources

Pushing the Limits of Near-Infrared Photometry with the Gemini Multi-Conjugate Adaptive Optics System: Study of crowded fields in the Globular Cluster M5 [PDF]

open access: goldMonthly notices of the Royal Astronomical Society
We present the deepest J – Ks near-infrared photometry of the globular cluster M5 (NGC 5904) from observations taken with the Gemini South Adaptive Optics Imager in tandem with the Gemini Multi-conjugate adaptive optics System (GeMS) on the 8.1m Gemini-
Tarun Kumar   +6 more
openalex   +2 more sources

Accurate photometry with adaptive optics in the presence of anisoplanatic effects with a sparsely sampled PSF [PDF]

open access: bronze, 2009
Anisoplanatic effects can cause significant systematic photometric uncertainty in the analysis of dense stellar fields observed with adaptive optics. Program packages have been developed for a spatially variable PSF, but they require that a sufficient ...
R. Schödel
semanticscholar   +5 more sources

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