Results 91 to 100 of about 4,646,519 (213)
Exploring Unobscured Quasi-stellar Objects in the Southern Hemisphere with KS4
The Astrophysical Journal Supplement SeriesWe present a catalog of unobscured quasi-stellar object (QSO) candidates in the Southern Hemisphere from the early interim data of the KMTNet Synoptic Survey of Southern Sky (KS4).
Yongjung Kim +9 more
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Asteroid spin-rate studies using large sky-field surveys
Geoscience Letters, 2017 Eight campaigns to survey asteroid rotation periods have been carried out using the intermediate Palomar Transient Factory in the past 3 years. 2780 reliable rotation periods were obtained, from which we identified two new super-fast rotators (SFRs ...
Chan-Kao Chang +7 more
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Radio Continuum Surveys of the Sky [PDF]
Symposium - International Astronomical Union, 1988 Radio continuum surveys give us the fundamental information about the distribution of the radio intensity across the sky. The radio waves originate in three fundamental emitting processes and are measured superposed in the antenna beam. At the lowest radio frequencies (below 10 GHz) the nonthermal emission process (synchrotron radiation) predominates ...
openaire +1 more source
SSSPM J0829–1309: a new nearby L dwarf detected in SuperCOSMOS Sky Surveys [PDF]
, 2002 The SuperCOSMOS Sky Surveys provide a complete coverage of the Southern skyin three passbands (photographic B J ,R and I) and at different epochs (Hambly et al.2001a,b,c).
R. Scholz +2 more
semanticscholar +1 more source
The Astrophysical JournalExtragalactic science and cosmology with Stage IV galaxy surveys will rely almost exclusively on redshift measurements derived solely from photometry, which are subject to systematic and statistical uncertainties with numerous analysis choices.
Bryan R. Scott +2 more
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Landscape surveys from the sky [PDF]
Nature Reviews Earth & Environment, 2020 No description ...
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The Astrophysical Journal Supplement SeriesThe observing strategy (OS) of an astronomical survey influences the degree to which its resulting data can be used to accomplish any science goal, necessitating upcoming programs, including those on the Rubin and Roman telescopes, to solicit metrics in ...
Alex I. Malz +4 more
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Nonparametric density estimation and clustering in astronomical sky surveys
Computational Statistics & Data Analysis, 2006 We present a nonparametric method for galaxy clustering in astronomical sky surveys. We show that the cosmological definition of clusters of galaxies is equivalent to density contour clusters (Hartigan, 1975) S"c={f>c} where f is a probability density ...
Woncheol Jang
semanticscholar +1 more source
Asteroid Impact Hazard Warning from the Near-Earth Object Surveyor Mission
The Planetary Science JournalNASA’s Near-Earth Object Surveyor mission, scheduled for launch in 2027 September, is designed to detect and characterize at least two-thirds of the potentially hazardous asteroids with diameters larger than 140 m in a nominal 5 yr mission. We describe a
Oliver Lay +5 more
doaj +1 more source
AstroSR: A Data Set of Galaxy Images for Astronomical Superresolution Research
The Astrophysical Journal Supplement SeriesIn the past decade, various sky surveys with a wide range of wavelengths have been conducted, resulting in an explosive growth of survey data. There may be overlapping regions between different surveys, but the data quality and brightness are different ...
Jiawei Miao +4 more
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