Browsing by Subject "Astrometry"

Now showing items 1-7 of 7

    • Feasibility study of the PEC compressor in HDFS file format 

      Estepa Sánchez, Carlos (Universitat Politècnica de Catalunya, 2011-11-15)
      Master thesis (pre-Bologna period)
      Open Access
      English: Improvement of the astrometric format GBIN using HFG5+ PEC.

    • Gaia DR2 white dwarfs in the Hercules stream 

      Torres Gil, Santiago; Cantero, Carles; Camisassa, María E.; Antoja, T.; Rebassa Mansergas, Alberto; Althaus, Leandro G.; Thelemaque, Thomas; Canovas Cabrera, Héctor (EDP Sciences, 2019-09-01)
      Article
      Open Access
      We analyzed the velocity space of the thin- and thick-disk Gaia white dwarf population within 100 pc by searching for signatures of the Hercules stellar stream. We aimed to identify objects belonging to the Hercules stream, ...

    • Hunting for open clusters in Gaia DR2: 582 new open clusters in the galactic disc 

      Castro Ginard, Alfred; Jordi Nebot, Carme; Luri Carrasco, Xavier; Álvarez Cid-Fuentes, Javier; Casamiquela, Laia; Anders, Friedrich; Cantat Gaudin, Tristan; Monguió Montells, Maria; Balaguer Núñez, Lola; Solà Martinell, Salvi; Badia Sala, Rosa Maria (EDP Sciences, 2020-03-04)
      Article
      Open Access
      Context. Open clusters are key targets for studies of Galaxy structure and evolution, and stellar physics. Since the Gaia data release 2 (DR2), the discovery of undetected clusters has shown that previous surveys were ...

    • Implementation of a random forest machine learning algorithm in the context of Gaia space mission 

      Cantero Mitjans, Carles (Universitat Politècnica de Catalunya, 2018-02-14)
      Master thesis
      Open Access
      Gaia space astrometry mission will scan about one billion stars an average of 70 times each over five years. During the mission time repeated astrometric, photometric and spectroscopic observations of the entire sky down ...

    • Statistical analysis of a massive astronomical cross-matching process 

      Nuño Gómez, Daniel-Juan (Universitat Politècnica de Catalunya, 2016-04-08)
      Master thesis (pre-Bologna period)
      Open Access
      Gaia is an ESA mission to create a 3D map of our Galaxy. The main objective is to provide positional measurements for about one billion stars. Gaia will scan the same sky region about 85 times in different directions. This ...

    • TESS first look at evolved compact pulsators: Known ZZ Ceti stars of the southern ecliptic hemisphere as seen by TESS 

      Raddi, Roberto (EDP Sciences, 2020-06-01)
      Article
      Open Access
      Context. We present our findings on 18 previously known ZZ Ceti stars observed by the TESS space telescope in 120 s cadence mode during the survey observation of the southern ecliptic hemisphere. Aims. We focus on the ...

    • Testing Precessing Bar Models in Gaia Data 

      Pardo Araujo, Celsa (Universitat Politècnica de Catalunya, 2020-10)
      Master thesis
      Restricted access - confidentiality agreement
      In this work we explore the origin of the Galactic warp, which is a deformation of the Galactic disc forming its typical S-shape when viewed edge-on. This novel theory is based on the idea of a small misalignment between ...