Results 1 to 10 of about 211,015 (286)
Verification of Photometric Parallaxes with Gaia DR2 Data
Galaxies, 2018 Results of comparison of Gaia DR2 parallaxes with data derived from a combined analysis of 2MASS (Two Micron All-Sky Survey), SDSS (Sloan Digital Sky Survey), GALEX (Galaxy Evolution Explorer), and UKIDSS (UKIRT Infrared Deep Sky Survey) surveys in four ...
Oleg Malkov +12 more
doaj +3 more sources
New Approaches to Object Classification in Synoptic Sky Surveys [PDF]
, 2008 Digital synoptic sky surveys pose several new object classification challenges. In surveys where real-time detection and classification of transient events is a science driver, there is a need for an effective elimination of instrument-related artifacts ...
C Donalek, A Mahabal, S G Djorgovski
exaly +4 more sources
Target Selection and Validation of DESI Quasars
The Astrophysical Journal, 2023 The Dark Energy Spectroscopic Instrument (DESI) survey will measure large-scale structures using quasars as direct tracers of dark matter in the redshift range 0.9 < z < 2.1 and using Ly α forests in quasar spectra at z > 2.1.
Edmond Chaussidon +56 more
doaj +1 more source
A Southern Photometric Quasar Catalog from the Dark Energy Survey Data Release 2
The Astrophysical Journal Supplement Series, 2022 We present a catalog of 1.4 million photometrically selected quasar candidates in the southern hemisphere over the ∼5000 deg ^2 Dark Energy Survey (DES) wide survey area. We combine optical photometry from the DES second data release (DR2) with available
Qian Yang, Yue Shen
doaj +1 more source
Multiscale Stamps for Real-time Classification of Alert Streams
The Astrophysical Journal Letters, 2023 In recent years, automatic classifiers of image cutouts (also called “stamps”) have been shown to be key for fast supernova discovery. The Vera C.
Ignacio Reyes-Jainaga +17 more
doaj +1 more source
Modeling and Simulation of Sky Survey
Applied Sciences, 2021 Sky surveys with wide and deep field are the key direction of international astronomy research for the next decades. It is worthwhile to study how to design a sky survey algorithm to obtain the maximum scientific output in a limited period of observation.
Kun Hu +4 more
doaj +1 more source
Supernovae Detection with Fully Convolutional One-Stage Framework
Sensors, 2021 A series of sky surveys were launched in search of supernovae and generated a tremendous amount of data, which pushed astronomy into a new era of big data.
Kai Yin +4 more
doaj +1 more source
Exploration of Large Digital Sky Surveys [PDF]
, 2000 We review some of the scientific opportunities and technical challenges posed by the exploration of the large digital sky surveys, in the context of a Virtual Observatory (VO).
A. A. Mahabal +12 more
core +3 more sources
Exploring the Time Domain With Synoptic Sky Surveys [PDF]
, 2011 Synoptic sky surveys are becoming the largest data generators in astronomy, and they are opening a new research frontier, that touches essentially every field of astronomy.
A. A. Mahabal +17 more
core +3 more sources
Long-Term Optical Monitoring of Blazars
Galaxies, 2019 Systematic monitoring of specific targets in the optical regime was historically applied on a very narrow sample of known variable stars. The discovery of blazars in the 20th century brought to the foreground the need for new global sky surveys, covering
Kosmas Gazeas
doaj +1 more source