Results 11 to 20 of about 165,609 (290)
Two new catalogs of blazar candidates in the WISE infrared sky [PDF]
, 2019 We present two catalogs of radio-loud candidate blazars whose WISE mid-infrared colors are selected to be consistent with the colors of confirmed gamma-ray emitting blazars.
Campana, Riccardo +11 more
core +2 more sources
The Future of Astrometry in Space
Frontiers in Astronomy and Space Sciences, 2018 This contribution focuses on the importance of astrometry and on its future developments. Over the centuries astrometry has greatly contributed to the advance of the knowledge of the Universe.
Antonella Vallenari
doaj +1 more source
Frontiers in Astronomy and Space Sciences, 2022 Supervised Machine Learning (ML) models for solar flare prediction rely on accurate labels for a given input data set, commonly obtained from the GOES/XRS X-ray flare catalog. With increasing interest in utilizing ultraviolet (UV) and extreme ultraviolet
Kiera van der Sande +4 more
doaj +1 more source
Deep u*- and g-band Imaging of the Spitzer Space Telescope First Look Survey Field : Observations and Source Catalogs [PDF]
, 2006 We present deep u*-, and g-band images taken with the MegaCam on the 3.6 m Canada-France-Hawaii Telescope (CFHT) to support the extragalactic component of the Spitzer First Look Survey (hereafter, FLS).
Dario Fadda +7 more
core +3 more sources
Artificial Star Test for Crowded Field CCD Photometry
Open Astronomy, 2015 A new method of performing an artificial star test (AST) for crowded field stellar CCD photometry is proposed. This AST method is superior in the cases when it is necessary to account for varying photometric quality across the study field, arising due to
Stonkutė R., Vansevičius V.
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RESULTS OF PROCESSING OF ASTRONEGATIVES WITH COMMERCIAL SCANNER
Odessa Astronomical Publications, 2014 Astrometric errors depending on the method of scanning with different spatial resolutions were studied with commercial scanner such as Epson Perfection V750 Pro.
Yu. I. Protsyuk +3 more
doaj +1 more source
Mock galaxy catalogs using the quick particle mesh method [PDF]
, 2013 Sophisticated analysis of modern large-scale structure surveys requires mock catalogs. Mock catalogs are used to optimize survey design, test reduction and analysis pipelines, make theoretical predictions for basic observables and propagate errors ...
McBride, Cameron K +2 more
core +3 more sources
Odessa Astronomical Publications, 2014 The paper discusses and illustrates the steps of basic processing of digitized image of astro negatives. Software for obtaining of a rectangular coordinates and photometric values of objects on photographic plates was created in the environment ...
Yu. I. Protsyuk +2 more
doaj +1 more source
Astrometric star catalogues as combination of Hipparcos/Tycho catalogues with ground-based observations [PDF]
Serbian Astronomical Journal, 2004 The successful ESA mission Hipparcos provided very precise parallaxes positions and proper motions of many stars in optical wavelength. Therefore it is a primary representation of International Celestial Reference System in this wavelength.
Vondrák J.
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Observational data on Galactic supernova remnants III: The supernova remnants within l = 270°-360° [PDF]
Serbian Astronomical Journal, 2004 We have collected all the available data of Galactic supernova remnants given in the literature. The data of Galactic supernova remnants located in the Galactic longitude interval l=270°-360°in all the spectral bands are represented in this work. We have
Guseinov O.H., Ankay A., Tagieva S.O.
doaj +1 more source