Results 41 to 50 of about 2,408 (150)

The Open mulTiwavelength Transient Event Repository (OTTER): Infrastructure Release and Tidal Disruption Event Catalog

open access: yesThe Astrophysical Journal
Multiwavelength analyses of astrophysical transients are essential for understanding the physics of these events. To make such analyses more efficient and effective, we present the Open mulTiwavelength Transient Event Repository (OTTER), a publicly ...
Noah Franz   +12 more
doaj   +1 more source

Data Release 1 of the Dark Energy Spectroscopic Instrument

open access: yesThe Astronomical Journal
In 2021 May the Dark Energy Spectroscopic Instrument (DESI) collaboration began a 5 yr spectroscopic redshift survey to produce a detailed map of the evolving three-dimensional structure of the Universe between z = 0 and z  ≈ 4.
DESI Collaboration   +309 more
doaj   +1 more source

ASTROINFORMATICS AS A NEW RESEARCH FIELD: UKRVO AND VIRGO RESOURCES

open access: yesOdessa Astronomical Publications, 2016
. The data-oriented astronomy has allowed classifying the  Astroinformatics as a new academic research field, which covers various multi-disciplinary  applications of the e-Astronomy. Among  them  are  the data modeling, data mining, metadata  standards 
I. B. Vavilova
doaj   +1 more source

Application Of Open-Source Spatio-Temporal Database Systems In Wide-Field Time-Domain Astronomy

open access: yes, 2018
Poster presentation in the ADASS XXVI (2016) Abstract: - We present our on-going experience with open-source spatio-temporal database systems that are optimized to manage both spatial and time information for analyzing large volumes of astronomical data acquired by wide-field time-domain surveys, such as KMTNet (Korea Microlensing Telescope Network ...
Chang, Seo-Won, Shin, Min-Su
openaire   +2 more sources

The Hubble Image Similarity Project

open access: yesThe Astronomical Journal
We have created a large database of similarity information between subregions of Hubble Space Telescope images. These data can be used to assess the accuracy of image-search algorithms based on computer vision methods.
Richard L. White, J. E. G. Peek
doaj   +1 more source

Star Proper Motions Based on Two-epoch Observations from the SDSS and DESI Imaging Surveys

open access: yesThe Astronomical Journal
In this study, we present the construction of a new proper-motion catalog utilizing the photometric data from the Sloan Digital Sky Survey (SDSS) and Dark Energy Spectroscopic Instrument (DESI) imaging surveys, with a median time baseline of about 13 yr.
Yun-Ao Xiao   +11 more
doaj   +1 more source

The Near-infrared Ca ii Triplet as a Stellar Activity Indicator: A Library and Comparative Study

open access: yesThe Astrophysical Journal Supplement Series
We have established and released a new stellar index library of the Ca ii triplet, which serves as an indicator for characterizing the chromospheric activity of stars.
Xin Huang   +13 more
doaj   +1 more source

An 11 yr Catalog of Gamma-Ray Transients: A Comprehensive Search with Fermi Gamma-Ray Burst Monitor Data

open access: yesThe Astrophysical Journal Supplement Series
The Gamma-ray Burst Monitor (GBM) on board the Fermi Gamma-ray Space Telescope has produced the largest database of all-sky observations in gamma rays with its continuous data with high time and energy resolutions.
Yuki Kaneko   +5 more
doaj   +1 more source

IOP4, the Interactive Optical Photo-Polarimetric Python Pipeline

open access: yesThe Astronomical Journal
IOP4 is a pipeline to perform photometry and polarimetry analysis of optical data from Calar Alto (CAHA) and Sierra Nevada (OSN) observatories. IOP4 implements Object Relational Mapping to seamlessly integrate all information about the reduction and ...
Juan Escudero Pedrosa   +12 more
doaj   +1 more source

DRAFTS: A Deep-learning-based Radio Fast Transient Search Pipeline

open access: yesThe Astrophysical Journal Supplement Series
The detection of fast radio bursts (FRBs) in radio astronomy is a complex task due to the challenges posed by radio-frequency interference and signal dispersion in the interstellar medium.
Yong-Kun Zhang   +7 more
doaj   +1 more source

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