Results 21 to 30 of about 38,722 (161)
The paper discusses and illustrates the steps of basic processing of digitized image of astro negatives. Software for obtaining of a rectangular coordinates and photometric values of objects on photographic plates was created in the environment ...
Yu. I. Protsyuk +2 more
doaj +1 more source
Virtual Observatory as a tool for stellar spectroscopy [PDF]
The Virtual Observatory (VO) is often presented as an all-purpose tool for the astronomer to do all his current work in a single web browser, from which he can control all data searches, reductions and mainly the full data analysis. This idea seems to be already fulfilling in certain fields of astronomy like is the search of unknown correlations ...
openaire +1 more source
A proper motion study of the Lupus clouds using Virtual Observatory tools [PDF]
Context. The Lupus dark cloud complex is a well-known, nearby low-mass star-forming region, probably associated with the Gould Belt. In recent years, the number of stellar and substellar Lupus candidate members has been remarkably increased thanks to the Cores to Disks (c2d) Spitzer Legacy Program and other studies.
B. López Martí +2 more
openaire +1 more source
Astronomical Research Using Virtual Observatories
The Virtual Observatory (VO) for Astronomy is a framework that empowers astronomical research by providing standard methods to find, access, and utilize astronomical data archives distributed around the world.
M Tanaka +6 more
doaj +1 more source
iNaturalist is a large and growing open-source online platform connecting a global community of users to the natural world and to each other. iNaturalist makes it simple for anyone to share observations, get identifications, and make identifications of ...
Colleen Hitchcock +2 more
doaj +1 more source
Connecting the time domain community with the Virtual Astronomical Observatory [PDF]
The time domain has been identified as one of the most important areas of astronomical research for the next decade. The Virtual Observatory is in the vanguard with dedicated tools and services that enable and facilitate the discovery, dissemination and ...
Djorgovski, S. G. +7 more
core +2 more sources
J-PLUS: Discovery and characterisation of ultracool dwarfs using Virtual Observatory tools [PDF]
Context. Ultracool dwarfs are objects with spectral types equal to or later than M7. Most of them have been discovered using wide-field imaging surveys. The Virtual Observatory has proven to be very useful for efficiently exploiting these astronomical resources. Aims.
Solano, E. +25 more
openaire +5 more sources
Identification of new hot subdwarf binary systems by means of Virtual Observatory tools
ABSTRACT The estimation of the binary fraction of hot subdwarfs is key to shed light on the different evolution scenarios proposed to explain the loss of the hydrogen envelope during the red giant branch phase. In this paper, we analyse the spectral energy distribution of the hot subdwarfs included in a recent and comprehensive catalogue
E Solano +9 more
openaire +3 more sources
Method for estimating the accuracy of astrometric (rectangular coordinates) and photometric (diameters and magnitudes) characteristics of commercial scanners is proposed and applied.
Yu. I. Protsyuk +10 more
doaj +1 more source
A search for new hot subdwarf stars by means of virtual observatory tools II [PDF]
Recent massive sky surveys in different bandwidths are providing new opportunities to modern astronomy. The Virtual Observatory (VO) represents the adequate framework to handle the huge amount of information available and filter out data according to specific requirements.
Pérez-Fernández, E. +4 more
openaire +3 more sources

