Results 1 to 10 of about 210,357 (290)
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
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Deep co-added sky from Catalina Sky Survey images [PDF]
Monthly Notices of the Royal Astronomical Society, 2021 ABSTRACT A number of synoptic sky surveys are underway or being planned. Typically, they are done with small telescopes and relatively short exposure times. A search for transient or variable sources involves comparison with deeper baseline images, ideally obtained through the same telescope and camera. With that in mind, we have stacked
Akshat Singhal +14 more
openaire +3 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
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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
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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
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, 2013 An invited chapter, to appear in Astronomical Techniques, Software, and Data (ed. H. Bond), Vol.2 of Planets, Stars, and Stellar Systems (ser. ed. T. Oswalt), Springer Verlag, in press (2012). 62 pages, incl.
Djorgovski, S. George +4 more
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The LOFAR LBA Sky Survey [PDF]
Astronomy & Astrophysics, 2023 Context. The Low Frequency Array (LOFAR) is the only existing radio interferometer able to observe at ultra-low frequencies (<100 MHz) with high resolution (<15") and high sensitivity (<1 mJy beam−1). To exploit these capabilities, the LOFAR Surveys Key Science Project is using the LOFAR Low Band Antenna (LBA) to carry out a sensitive wide ...
F. de Gasperin +29 more
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The VLA Low‐frequency Sky Survey [PDF]
Astronomische Nachrichten, 2006 AbstractWe present an overview of the ongoing VLA Low‐frequency Sky Survey (VLSS, formerly known as 4MASS). The VLSS will map an area of 9.1 sr covering the entire sky above a declination of –30 degrees (or 75% of the full sky), at a frequency of 74 MHz (4 meter wavelength) with an unprecedented combination of sensitivity and resolution at this low ...
Cohen, A. S. +7 more
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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
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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
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