Listar por autor "Manteiga, Minia"

Mostrando ítems 1-20 de 28

    • A Blended Artificial Intelligence Approach for Spectral Classification of Stars in Massive Astronomical Surveys 

      Dafonte, Carlos; Rodríguez, Alejandra; Manteiga, Minia; Gómez García, Ángel; Arcay, Bernardino (MDPI AG, 2020-05-01)
      [Abstract] This paper analyzes and compares the sensitivity and suitability of several artificial intelligence techniques applied to the Morgan–Keenan (MK) system for the classification of stars. The MK system is based ...

    • AI-based user authentication reinforcement by continuous extraction of behavioral interaction features 

      Garabato, D.; Dafonte, Carlos; Santovena, Raul; Silvelo, Arturo; Nóvoa, Francisco; Manteiga, Minia (Springer, 2022-07)
      [Abstract]: In this work, we conduct an experiment to analyze the feasibility of a continuous authentication method based on the monitorization of the users' activity to verify their identities through specific user profiles ...

    • Analysis and Knowledge Discovery by Means of Self-Organizing Maps for Gaia Data Releases 

      Álvarez, M. A.; Dafonte, Carlos; Garabato, D.; Manteiga, Minia (Springer, 2016)
      [Abstract]: A billion stars: this is the approximate amount of visible objects estimated to be observed by the Gaia satellite, representing roughly 1 % of the objects in the Galaxy. It constitutes the biggest amount of ...

    • Close Binary Stars in Planetary Nebulae through Gaia EDR3 

      González Santamaría, I.; Manteiga, Minia; Dafonte, Carlos (MDPI, 2021)
      [Abstract] The aim of this work is to search for evidence of close binary stars associated with planetary nebulae (ionized stellar envelopes in expansion) by mining the astronomical archive of Gaia EDR3. For this task, ...

    • Distributed Fast Self-Organized Maps for Massive Spectrophotometric Data Analysis 

      Dafonte, Carlos; Garabato, D.; Álvarez, M. A.; Manteiga, Minia (MDPI AG, 2018-05-03)
      [Abstract] Analyzing huge amounts of data becomes essential in the era of Big Data, where databases are populated with hundreds of Gigabytes that must be processed to extract knowledge. Hence, classical algorithms must be ...

    • Distributed Fast Self-Organized Maps for Massive Spectrophotometric Data Analysis 

      Dafonte, Carlos; Garabato, D.; Álvarez, M. A.; Manteiga, Minia (MDPI, 2018-11)
      [Abstract]: Analyzing huge amounts of data becomes essential in the era of Big Data, where databases are populated with hundreds of Gigabytes that must be processed to extract knowledge. Hence, classical algorithms must ...

    • Gaia Data Release 3: Analysis of RVS spectra using the General Stellar Parametriser from spectroscopy 

      Recio-Blanco, A.; Torralba Elipe, Guillermo; Manteiga, Minia; Dafonte, Carlos; Garabato, D.; Gómez, Ángel; González Santamaría, I.; Pallas-Quintela, Lara; Santoveña, Raúl; Silvelo, Arturo (EDP Sciences, 2023-06)
      [Abstract]: Context. The chemo-physical parametrisation of stellar spectra is essential for understanding the nature and evolution of stars and of Galactic stellar populations. A worldwide observational effort from the ...

    • Gaia Data Release 3: Analysis of the Gaia BP/RP spectra using the General Stellar Parameterizer from Photometry 

      Andrae, R.; Álvarez, M. A.; Dafonte, Carlos; Garabato, D.; Gómez, Ángel; González Santamaría, I.; Manteiga, Minia; Pallas-Quintela, Lara; Santoveña, Raúl; Silvelo, Arturo; Torralba Elipe, Guillermo (EDP Sciences, 2023-06)
      [Abstract]: Context. The astrophysical characterisation of sources is among the major new data products in the third Gaia Data Release (DR3). In particular, there are stellar parameters for 471 million sources estimated ...

    • Gaia Data Release 3: Apsis. II. Stellar parameters 

      Fouesneau, M.; Álvarez, M. A.; Garabato, D.; Dafonte, Carlos; Gómez, Ángel; González Santamaría, I.; Manteiga, Minia; Pallas-Quintela, Lara; Santoveña, Raúl; Silvelo, Arturo; Torralba Elipe, Guillermo (EDP Sciences, 2023-06)
      [Abstract]: Context. The third Gaia data release (Gaia DR3) contains, beyond the astrometry and photometry, dispersed light for hundreds of millions of sources from the Gaia prism spectra (BP and RP) and the spectrograph ...

    • Gaia Data Release 3: Apsis. III. Non-stellar content and source classification 

      Delchambre, L.; Garabato, D.; Dafonte, Carlos; Manteiga, Minia; Silvelo, Arturo; Álvarez, M. A.; Gómez, Ángel; González Santamaría, I.; Pallas-Quintela, Lara; Santoveña, Raúl; Torralba Elipe, Guillermo (EDP Sciences, 2023-06)
      [Abstract]: Context. As part of the third Gaia Data Release, we present the contributions of the non-stellar and classification modules from the eighth coordination unit (CU8) of the Data Processing and Analysis Consortium, ...

    • Gaia Data Release 3: Astrophysical parameters inference system (Apsis). I. Methods and content overview 

      Creevey, O. L.; Garabato, D.; Torralba Elipe, Guillermo; Álvarez, M. A.; Dafonte, Carlos; Gómez, Ángel; González Santamaría, I.; Manteiga, Minia; Pallas-Quintela, Lara; Santoveña, Raúl; Silvelo, Arturo (EDP Sciences, 2023-06)
      [Abstract]: Gaia Data Release 3 contains a wealth of new data products for the community. Astrophysical parameters are a major component of this release, and were produced by the Astrophysical parameters inference system ...

    • Gaia Data Release 3: Catalogue validation 

      Babusiaux, C.; Álvarez, M. A.; Dafonte, Carlos; Manteiga, Minia; Santoveña, Raúl; Torralba Elipe, Guillermo (EDP Sciences, 2023-06)
      [Abstract]: Context. The third Gaia data release (DR3) provides a wealth of new data products. The early part of the release, Gaia EDR3, already provided the astrometric and photometric data for nearly two billion sources. ...

    • Gaia Data Release 3: Chemical cartography of the Milky Way 

      Recio-Blanco, A.; Garabato, D.; Álvarez, M. A.; Dafonte, Carlos; Gómez, Ángel; González Santamaría, I.; Pallas-Quintela, Lara; Santoveña, Raúl; Silvelo, Arturo; Torralba Elipe, Guillermo; Manteiga, Minia (EDP Sciences, 2023-06)
      [Abstract]: Context. The motion of stars has been used to reveal details of the complex history of the Milky Way, in constant interaction with its environment. Nevertheless, to reconstruct the Galactic history puzzle in ...

    • Gaia Data Release 3: Exploring and mapping the diffuse interstellar band at 862 nm 

      Schultheis, M.; Garabato, D.; Álvarez, M. A.; Dafonte, Carlos; Gómez, Ángel; Manteiga, Minia; González Santamaría, I.; Pallas-Quintela, Lara; Santoveña, Raúl; Silvelo, Arturo; Torralba Elipe, Guillermo (EDP Sciences, 2023-01)
      [Abstract]: Context. Diffuse interstellar bands (DIBs) are common interstellar absorption features in spectroscopic observations but their origins remain unclear. DIBs play an important role in the life cycle of the ...

    • Gaia Data Release 3: Stellar chromospheric activity and mass accretion from Ca II IRT observed by the Radial Velocity Spectrometer 

      Lanzafame, A. C.; Álvarez, M. A.; Dafonte, Carlos; Garabato, D.; Gómez, Ángel; González Santamaría, I.; Manteiga, Minia; Pallas-Quintela, Lara; Santoveña, Raúl; Silvelo, Arturo; Torralba Elipe, Guillermo (EDP Sciences, 2023-06)
      [Abstract]: Context. The Gaia Radial Velocity Spectrometer (RVS) provides the unique opportunity of a spectroscopic analysis of millions of stars at medium resolution (λ/I λ'a '11'500) in the near-infrared (845'872 nm). ...

    • Gaia Data Release 3: The extragalactic content 

      Bailer-Jones, C. A. L.; Garabato, D.; Álvarez, M. A.; Dafonte, Carlos; Gómez, Ángel; González Santamaría, I.; Manteiga, Minia; Pallas-Quintela, Lara; Santoveña, Raúl; Silvelo, Arturo; Torralba Elipe, Guillermo (EDP Sciences, 2023-06)
      [Abstract]: The Gaia Galactic survey mission is designed and optimized to obtain astrometry, photometry, and spectroscopy of nearly two billion stars in our Galaxy. Yet as an all-sky multi-epoch survey, Gaia also observes ...

    • Gaia Data Release 3: The Galaxy in your preferred colours: Synthetic photometry from Gaia low-resolution spectra 

      Montegriffo, P.; Garabato, D.; Manteiga, Minia; Santoveña, Raúl; Álvarez, M. A.; Dafonte, Carlos; Gómez, Ángel; González Santamaría, I.; Pallas-Quintela, Lara; Silvelo, Arturo; Torralba Elipe, Guillermo (EDP Sciences, 2023-06)
      [Abstract]: Gaia Data Release 3 provides novel flux-calibrated low-resolution spectrophotometry for '220 million sources in the wavelength range 330 nm ≤ λ ≤ 1050 nm (XP spectra). Synthetic photometry directly tied to a ...

    • Gaia DR2 Distances to Planetary Nebulae 

      González Santamaría, I.; Manteiga, Minia; Manchado, Arturo; Ulla, Ana; Dafonte, Carlos (MDPI AG, 2020-04-01)
      [Abstract] The aim of this work is to examine distances to planetary nebulae (PNe) together with other properties that were derived from them, using the astrometry of Gaia Data Release 2 (DR2). We were able to identify ...

    • Gaia Early Data Release 3: Acceleration of the Solar System from Gaia Astrometry 

      Manteiga, Minia; Álvarez, M. A.; Dafonte, Carlos; Garabato, D.; Gómez García, Ángel; González Santamaría, I.; Santoveña, Raúl (EDP Sciences, 2021)
      [Abstract] Context. Gaia Early Data Release 3 (Gaia EDR3) provides accurate astrometry for about 1.6 million compact (QSO-like) extragalactic sources, 1.2 million of which have the best-quality five-parameter astrometric ...

    • Gaia Early Data Release 3: Structure and Properties of the Magellanic Clouds 

      Manteiga, Minia; Álvarez, M. A.; Dafonte, Carlos; Garabato, D.; Gómez García, Ángel; González Santamaría, I.; Santoveña, Raúl (EDP Sciences, 2021)
      [Abstract] Context. This work is part of the Gaia Data Processing and Analysis Consortium papers published with the Gaia Early Data Release 3 (EDR3). It is one of the demonstration papers aiming to highlight the improvements ...