Results 1 to 10 of about 37,156 (224)

Automatic Classification of Spectra with IEF-SCNN

open access: yesUniverse, 2023
Telescopes such as the Large Sky Area Multi-Object Spectroscopic Telescope and the Sloan Digital Sky Survey have produced an extensive collection of spectra, challenging the feasibility of manual classification in terms of accuracy and efficiency.
Jingjing Wu   +4 more
doaj   +1 more source

Optical and Infrared Counterparts of the X-Ray Sources Detected in the Chandra Cygnus OB2 Legacy Survey

open access: yesThe Astrophysical Journal Supplement Series, 2023
The young massive OB association Cygnus OB2, in the Cygnus X complex, is the closest (∼1400 pc) star-forming region to the Sun hosting thousands of young low-mass stars and up to 1000 OB stars, among which are some of the most massive stars known in our ...
M. G. Guarcello   +6 more
doaj   +1 more source

The Eighteenth Data Release of the Sloan Digital Sky Surveys: Targeting and First Spectra from SDSS-V

open access: yesThe Astrophysical Journal Supplement Series, 2023
The eighteenth data release (DR18) of the Sloan Digital Sky Survey (SDSS) is the first one for SDSS-V, the fifth generation of the survey. SDSS-V comprises three primary scientific programs or “Mappers”: the Milky Way Mapper (MWM), the Black Hole Mapper (
Andrés Almeida   +154 more
doaj   +1 more source

WWW database of optical constants for astronomy [PDF]

open access: yesAstronomy and Astrophysics Supplement Series, 1999
The database we announce contains references to the papers, data les and links to the Internet resources related to measurements and calculations of the optical constants of the materials of astronomical interest: dier- ent silicates, ices, oxides, suldes, carbides, carbonaceous species from amorphous carbon to graphite and diamonds, etc.
Henning, T.   +4 more
openaire   +2 more sources

Responsible Metrics for Astronomy: Comparing ADS to Other Citation Databases

open access: yesBulletin of the AAS, 2022
The Astrophysics Data System is well established as one of the most prominent discipline specific citation databases. As such, it is a rich source of astronomy related metrics. It has been specified as “designed to be useful to astronomers, not bibliometricians”.
Isaksson, Eva, Hakulinen, Riku
openaire   +2 more sources

A GPU based single-pulse search pipeline (GSP) with database and its application to the Commensal Radio Astronomy FAST Survey (CRAFTS) [PDF]

open access: yesResearch in Astronomy and Astrophysics, 2021
Abstract We developed a GPU based single-pulse search pipeline (GSP) with a candidate-archiving database. Largely based upon the infrastructure of the open source PulsaR Exploration and Search Toolkit (PRESTO), GSP implements GPU acceleration of the de-dispersion and integrates a candidate-archiving database.
You, Shanping   +10 more
openaire   +2 more sources

The Benefits of Using XML Technologies in Astronomical Data Retrieval and Interpretation [PDF]

open access: yes, 2015
This paper describes a solution found during recent research that could provide improvements in the efficiency, reliability and cost of retrieving stored astronomical data.
Altieri, Bruno   +13 more
core   +13 more sources

All Spectral Type LAMOST Spectra Library (ATLAS)

open access: yesThe Astrophysical Journal Supplement Series, 2023
We present an empirical stellar spectra library, ATLAS, with resolution R ∼ 1800 and wavelength coverage from 3800–8700 Å. These spectra are homogeneously observed by the Large Sky Area Multi-Object Fiber Spectroscopic Telescope and have been released in
Wei Ji   +6 more
doaj   +1 more source

Toward Machine-learning-based Metastudies: Applications to Cosmological Parameters

open access: yesThe Astrophysical Journal Supplement Series, 2023
We develop a new model for automatic extraction of reported measurement values from the astrophysical literature, utilizing modern natural language processing techniques.
Tom Crossland   +10 more
doaj   +1 more source

Benchmarking SQL on MapReduce systems using large astronomy databases [PDF]

open access: yesDistributed and Parallel Databases, 2015
In the era of bigdata, with a massive set of digital information of unprecedented volumes being collected and/or produced in several application domains, it becomes more and more difficult to manage and query large data repositories. In the framework of the PetaSky project (http://com.isima.fr/Petasky), we focus on the problem of managing scientific ...
Mesmoudi, Amin   +2 more
openaire   +2 more sources

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