Results 1 to 10 of about 9,262 (225)
Infrared photometry of z 1 3C quasars [PDF]
Monthly Notices of the Royal Astronomical Society, 2000 We present JHKL' photometry of a complete sample of steep-spectrum radio-loud quasars from the revised 3CR catalogue in the redshift range 0.65 < z < 1.20. After correcting for contributions from emission lines and the host galaxies, we investigate their spectral energy distributions (SEDs) around 1 micron.
Chris Simpson +2 more
exaly +4 more sources
Near-infrared photometry of carbon stars★ [PDF]
Monthly Notices of the Royal Astronomical Society, 2006 Abstract Near-infrared, JHKL, photometry of 239 Galactic C-rich variable stars is presented and discussed. From these and published data, the stars were classified as Mira or non-Mira variables, and amplitudes and pulsation periods, ranging from 222 to 948 d for the Miras, were determined for most of them.
Patricia A Whitelock +2 more
exaly +3 more sources
PLoS ONE, 2020 Near-infrared transillumination is used in the diagnosis and the management of different eye diseases. In particular, it enables the visualization of melanin in the pigment epithelium of the iris.
Maciej Czepita
doaj +2 more sources
Absolute Calibration. III. Improved Absolute Calibration for the Visible through the Mid-infrared
The Astronomical Journal, 2023 We propose Sirius as an improved zero-point-defining star and calibrate its spectrum to an accuracy of ∼0.6% in both the visible and infrared. This result is based on a newly derived independent calibration in the visible of similar accuracy to the ...
G. H. Rieke +3 more
doaj +1 more source
The Farmer: A Reproducible Profile-fitting Photometry Package for Deep Galaxy Surveys
The Astrophysical Journal Supplement Series, 2023 While space-borne optical and near-infrared facilities have succeeded in delivering a precise and spatially resolved picture of our Universe, their small survey area is known to underrepresent the true diversity of galaxy populations.
J. R. Weaver +19 more
doaj +1 more source
Astrometry and Photometry for ≈1000 L, T, and Y Dwarfs from the UKIRT Hemisphere Survey
The Astronomical Journal, 2023 We present the positions, proper motions, and near-infrared photometry for 966 known objects with spectral types later than M that were observed as part of the the UKIRT Hemisphere Survey (UHS).
Adam C. Schneider +7 more
doaj +1 more source
Measuring the Dust Attenuation Curves of SINGS/KINGFISH Galaxies Using Swift/UVOT Photometry
The Astrophysical Journal, 2023 We present Swift/Ultraviolet Optical Telescope (UVOT) integrated light photometry of the Spitzer Infrared Nearby Galaxies Survey (SINGS) and the Key Insights on Nearby Galaxies: A Far-Infrared Survey with Herschel (KINGFISH) samples of nearby galaxies ...
Alexander Belles +5 more
doaj +1 more source
On the Accuracy of Infrared Photometry [PDF]
Symposium - International Astronomical Union, 1985 Photometric errors due to scintillation are considered in detail. Given noise characteristics, the standard deviations, as deduced from observations, are computed for the quantities measured at successive steps of the photometric procedure. This allows us to understand better the errors computed on-line in observatories, and to understand better the ...
R. Papoular, B. Pégourié
openaire +1 more source
The Astrophysical Journal, 2023 Extinction toward the Galactic Center (GC) is extreme and limits observations of its stars to the infrared. In addition, the extinction varies on scales of arcseconds.
Shogo Nishiyama +2 more
doaj +1 more source
Optical and Infrared Photometry of SN 2005df* [PDF]
Research Notes of the AAS, 2017 12 pages, 3 figures, to be published in Research Notes of the ...
Kevin Krisciunas +5 more
openaire +2 more sources