Results 21 to 30 of about 1,189,461 (268)

AI application to artificial satellite identification in CHEOPS data

open access: yesAstronomy & Astrophysics
Context. The rapid proliferation of artificial satellites poses a growing challenge to astronomical observations, calling for robust methods to flag and mitigate their impact on scientific data quality.
García-Martín Pablo   +4 more
doaj   +3 more sources

UkrVO Joint Digitized Archive and Scientific Prospects

open access: yesOpen Astronomy, 2012
The UkrVO (Ukrainian Virtual Observatory) database consists of about 200 000 astronomical photographic plates and 500 000 CCD frames containing unique astronomical information for formulating important scientific tasks.
Vavilova I. B.   +7 more
doaj   +1 more source

Visual Binary Stars: Data to Investigate Formation of Binaries

open access: yesOpen Astronomy, 2016
Statistics of orbital parameters of binary stars as well as statistics of their physical characteristics bear traces of star formation history. However, statistical investigations of binaries are complicated by incomplete or missing observational data ...
Kovaleva D.   +3 more
doaj   +1 more source

Multiband Study of Radio Sources of the RCR Catalogue with Virtual Observatory Tools

open access: yesOpen Astronomy, 2012
We present early results of our multiband study of the RATAN Cold Revised (RCR) catalogue obtained from seven cycles of the “Cold” survey carried with the RATAN-600 radio telescope at 7.6 cm in 1980-1999, at the declination of the SS 433 source.
Zhelenkova O. P.   +3 more
doaj   +1 more source

The CERES Astronomical Database

open access: yes, 1999
5 pages, 1 figure, to appear in the proceedings of the 4th Hellenic Astronomical ...
Xanthopoulos, E.   +4 more
openaire   +3 more sources

Querying an astronomical database using large language models: the ALeRCE text-to-SQL system

open access: yesAstronomy & Astrophysics
We developed a text-to-structured query language (SQL) system based on large language models (LLMs) using in-context learning and applied it to the Automatic Learning for the Rapid Classification of Events (ALeRCE) astronomical database.
Estévez P. A.   +12 more
doaj   +1 more source

Polvere di stelle The Italian platform for data-sharing and data-preserving of modern and ancient astronomical resources

open access: yesEPJ Web of Conferences, 2018
Polvere di stelle (Stardust) is the web portal of the National Institute for Astrophysics(INAF) dedicated to the Italian astronomical libraries, archives and museums.
Gargano Mauro   +3 more
doaj   +1 more source

Long-Term Multi-Band and Polarimetric View of Mkn 421: Motivations for an Integrated Open-Data Platform for Blazar Optical Polarimetry

open access: yesGalaxies, 2017
In this work, by making use of the large software and database resources made available through online facilities such as the ASI Science Data Center (ASDC), we present a novel approach to the modelling of blazar emission whereby the multi-epoch SED for ...
Ulisses Barres de Almeida   +5 more
doaj   +1 more source

A Decade of Linear and Circular Polarimetry with the POLISH2 Polarimeter

open access: yesThe Astrophysical Journal Supplement Series, 2023
The POLISH2 optical polarimeter has been in operation at the Lick Observatory 3 m Shane telescope since 2011, and it was commissioned at the Gemini North 8 m in 2016.
Sloane J. Wiktorowicz   +17 more
doaj   +1 more source

The Use of Multiwavelength Archival Observational Data for Scientific Discoveries: a Case of the Supernova Remnant Cassiopeia A

open access: yesOpen Astronomy, 2012
Most of the high-quality astronomical data after a proprietary period of typically one year are provided to open access, allowing researchers to complement their observations with the archival data in other wavelength bands, thus improving quality of the
Docenko Dmitrijs
doaj   +1 more source

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