Astrophysical: Astronomical databases

  • Publication
    A fast version of the k-means classification algorithm for astronomical applications
    Context. K-means is a clustering algorithm that has been used to classify large datasets in astronomical databases. It is an unsupervised method, able to cope...
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    A universal method for solar filament detection from Hα observations using semi-supervised deep learning
    Filaments are omnipresent features in the solar atmosphere. Their location, properties, and time evolution can provide important information about changes in...
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    Abundances, Stellar Parameters, and Spectra from the SDSS-III/APOGEE Survey
    The SDSS-III/Apache Point Observatory Galactic Evolution Experiment (APOGEE) survey operated from 2011–2014 using the APOGEE spectrograph, which collects high...
  • Publication
    Automated Unsupervised Classification of the Sloan Digital Sky Survey Stellar Spectra using k-means Clustering
    Large spectroscopic surveys require automated methods of analysis. This paper explores the use of k-means clustering as a tool for automated unsupervised...
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    Automatic spectral classification of stellar spectra with low signal-to-noise ratio using artificial neural networks
    Context. As part of a project aimed at deriving extinction-distances for thirty-five planetary nebulae, spectra of a few thousand stars were analyzed to...
  • Publication
    CARMENES input catalogue of M dwarfs. V. Luminosities, colours, and spectral energy distributions
    Context. The relevance of M dwarfs in the search for potentially habitable Earth-sized planets has grown significantly in the last years. Aims: In our on-going...
  • Publication
    Dozens of virtual impactor orbits eliminated by the EURONEAR VIMP DECam data mining project
    Context. Massive data mining of image archives observed with large etendue facilities represents a great opportunity for orbital amelioration of poorly known...
  • Publication
    EURONEAR: Data mining of asteroids and Near Earth Asteroids
    Besides new observations, mining old photographic plates and CCD image archives represents an opportunity to recover and secure newly discovered asteroids, also...
  • Publication
    Gaia Focused Product Release: Sources from Service Interface Function image analysis. Half a million new sources in omega Centauri
    Context. Gaia's readout window strategy is challenged by very dense fields in the sky. Therefore, in addition to standard Gaia observations, full Sky Mapper (SM...