Results 1 to 10 of about 38,670 (109)

Discovery of optically faint obscured quasars with Virtual Observatory tools [PDF]

open access: yesAstronomy & Astrophysics, 2004
We use Virtual Observatory (VO) tools to identify optically faint, obscured (i.e., type 2) active galactic nuclei (AGN) in the two Great Observatories Origins Deep Survey (GOODS) fields.
Alexander   +34 more
core   +4 more sources

Topic Maps as a Virtual Observatory tool [PDF]

open access: yesSPIE Proceedings, 2001
One major component of the VO will be catalogs measuring gigabytes and terrabytes if not more. Some mechanism like XML will be used for structuring the information. However, such mechanisms are not good for information retrieval on their own.
Brunner, R.   +3 more
core   +6 more sources

How to Make the Dream Come True: The Astronomers' Data Manifesto [PDF]

open access: yesData Science Journal, 2007
Astronomy is one of the most data-intensive of the sciences. Data technology is accelerating the quality and effectiveness of its research, and the rate of astronomical discovery is higher than ever. As a result, many view astronomy as being in a "Golden
Ray P Norris
doaj   +5 more sources

Luminous AGB stars in nearby galaxies. A study using Virtual Observatory tools [PDF]

open access: yesAstronomy & Astrophysics, 2005
Aims. This study focuses on very luminous Mbol1.5 mag and H-Ks>0.4 mag in the LMC, SMC, M31, and M33 from 2MASS data. Methods.The data were taken from the 2MASS All-Sky Point Source catalogue archive.
A. Dapergolas   +45 more
core   +3 more sources

A search for new hot subdwarf stars by means of Virtual Observatory tools [PDF]

open access: yesAstronomy & Astrophysics, 2011
Hot subdwarf stars are faint, blue objects, and are the main contributors to the far-UV excess observed in elliptical galaxies. They offer an excellent laboratory to study close and wide binary systems, and to scrutinize their interiors through ...
García-Torres, M.   +5 more
core   +2 more sources

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   +2 more sources

Safeguarding Old and New Journal Tables for the VO: Status for Extragalactic and Radio Data

open access: yesData Science Journal, 2009
Independent of established data centers, and partly for my own research, since 1989 I have been collecting the tabular data from over 2600 articles concerned with radio sources and extragalactic objects in general. Optical character recognition (OCR) was
Heinz Andernach
doaj   +4 more sources

Clusterix 2.0: a virtual observatory tool to estimate cluster membership probability [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2020
ABSTRACT Clusterix 2.0 is a web-based, Virtual Observatory compliant, interactive tool for the determination of membership probabilities in stellar clusters based on proper-motion data using a fully non-parametric method. In an area occupied by a cluster, the frequency function is made up of two contributions: cluster and field stars ...
L Balaguer-Núñez   +8 more
openaire   +6 more sources

TESELA: a new Virtual Observatory tool to determine blank fields for astronomical observations [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2011
Accepted for publication in Monthly Notices of the Royal Astronomical Society. 11 pages, 10 figures.
Cardiel López, Nicolás   +4 more
openaire   +5 more sources

VIRTUAL REPRESENTATIONS IN IMMERSIVE ENVIRONMENTS TO SUPPORT CULTURAL SIGNIFICANCE ASSESSMENT [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2023
This paper explores the potential of virtual representations of the built heritage integrated in immersive web-based platform to support the work of experts in collecting, formalizing, and communicating data about its Cultural Significance (CS) in a ...
P. Jouan, P. Hallot
doaj   +1 more source

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