Dissertações de Mestrado PPGA: Recent submissions

  • DE LA VILLARMOIS, ELIZABETH ARTUR (Observatorio NacionalDivisão de Programas de Pós-Graduação - DIPPGBrasilONPrograma de Pós-Graduação em Astronomia, 2016-02-16)
    The process of low-mass star formation occurs in embedded regions, called molecular clouds. Due to the high extinction in optical wavelengths, the study of star formation takes place in the infrared (IR) and (sub-)millimeter ...
  • DE SOUZA FELICIANO, ANA CAROLINA (Observatorio NacionalDivisão de Programas de Pós-Graduação - DIPPGBrasilONPrograma de Pós-Graduação em Astronomia, 2016-03-30)
    The region beyond Neptune (transneptunian region) has more than 1900 objects composed of ices, which are considered the most pristine objects in the solar system. To analyze these objects from the ground, we utilize ...
  • VIEIRA DE MELO MONTEIRO, FILIPE (Observatorio NacionalDivisão de Programas de Pós-Graduação - DIPPGBrasilONPrograma de Pós-Graduação em Astronomia, 2016-07-25)
    Photometric data for 35 Near-Earth Asteroids (NEA) were obtained in the present work. The data were acquired at the 1-m telescope of the Observatório Astronômico do Sertão de Itaparica - OASI - (Itacuruba, PE) and were ...
  • PAPPACENA RORIZ, MICHELE (Observatorio NacionalDivisão de Programas de Pós-Graduação - DIPPGBrasilONPrograma de Pós-Graduação em Astronomia, 2016-08-24)
    Symbiotic stars are interacting binary system formed by a cool star (red giant) and a hot companion (white dwarf) accreting the material ejected for its companion by a stellar winds. Based in the cool companion, symbiotic ...
  • GARCIA, MATIAS JAVIER (Observatorio NacionalDivisão de Programas de Pós-Graduação - DIPPGBrasilONPrograma de Pós-Graduação em Astronomia, 2016-11-25)
    The main objective of this work is the search of astrobiologically interesting planets through the physical characterization of rocky exoplanets within the habitable zone (HZ) of their host stars. To do this, we calculated ...
  • LARANJEIRA, SERGIO EDUARDO (Observatorio NacionalDivisão de Programas de Pós-Graduação - DIPPGBrasilONPrograma de Pós-Graduação em Astronomia, 2017-07-07)
    Recent observational data suggest that, from the total content of the universe, ∼ 26% is in the form of the so-called Dark Matter (DM). At present, there is no settled understanding of its nature. On the other hand, galactic ...
  • BARROS DE CICCO, MARCELO ANTONIO (Observatorio NacionalDivisão de Programas de Pós-Graduação - DIPPGBrasilONPrograma de Pós-Graduação em Astronomia, 2017-09-27)
    EXOSS (Exploring Southerns Skies for New Radiants) it is a citizen science project that started its activities on May 2015 and later became a master graduate project developing its operational and scientific structure, ...
  • DA SILVA ARCOVERDE, PLICIDA MARIA (Observatorio NacionalDivisão de Programas de Pós-Graduação - DIPPGBrasilONPrograma de Pós-Graduação em Astronomia, 2018-02-23)
    In this work we present the results obtained from the study of the phase curve of 29 NEO through observations with the telescope of the Observatório Astronômico do Sertão de Itaparica (OASI), of the IMPACTON project. ...
  • DOS SANTOS ANDRADE, UENDERT (Observatorio NacionalDivisão de Programas de Pós-Graduação - DIPPGBrasilONPrograma de Pós-Graduação em Astronomia, 2018-02-27)
    The standard cosmology strongly relies upon the Cosmological Principle, which consists on the hypotheses of large scale isotropy and homogeneity of the Universe. Testing these assumptions is, therefore, crucial to determining ...
  • DA SILVA AVILA, FELIPE (Observatorio NacionalDivisão de Programas de Pós-Graduação - DIPPGBrasilONPrograma de Pós-Graduação em Astronomia, 2018-02-27)
    The standard model of cosmology is based on the Cosmological Principle (CP), which states that, on large scales, the Universe is homogeneous and isotropic. It predicts that the transition from an inhomogenous to a homogeous ...
  • BATALHA DE MELO, REBECA MARIA (Observatorio NacionalDivisão de Programas de Pós-Graduação - DIPPGBrasilONPrograma de Pós-Graduação em Astronomia, 2018-03-15)
    The phenomenon of Supernova is not completely understood. The explosion mechanisms of Supernovae (SNe) and the nature of their binary system still remain open. In the current literature, there are a variety of theoretical ...
  • DE JESUS SANTOS, WILTON (Observatorio NacionalDivisão de Programas de Pós-Graduação - DIPPGBrasilONPrograma de Pós-Graduação em Astronomia, 2018-08-27)
    Abstract DISTRIBUTIONS OF PROJECTED ROTATIONAL VELOCITIES IN 4 OPEN CLUSTERS IN THE CARINA REGION Wilton de Jesús Santos August/2018 Advisor: PhD. Simone Daflon Program: Astronomy Trumpler 14, 15 and 16 (Tr14, Tr15 and ...
  • QUISPE HUAYNASI, FREDI (Observatorio NacionalDivisão de Programas de Pós-Graduação - DIPPGBrasilONPrograma de Pós-Graduação em Astronomia, 2018-08-28)
    The study of transneptunian objects (TNOs) and Centaurs, because to their low brightness, is not simple. However, great contributions to the study and characterization of these objects have been obtained from the application ...
  • LOAIZA TACURI, VERONICA (Observatorio NacionalDivisão de Programas de Pós-Graduação - DIPPGBrasilONPrograma de Pós-Graduação em Astronomia, 2018-09-06)
    Chemical Abundances in red giants of the open clusters NGC 2420, NGC 6819 and NGC 6705 from APOGEE spectra Studying chemical abundances of stars belonging to open clusters helps in understanding the formation and evolution ...
  • MELO DE MENEZES, LUIZ FELIPE (Observatorio NacionalDivisão de Programas de Pós-Graduação - DIPPGBrasilONPrograma de Pós-Graduação em Astronomia, 2018-12-17)
    ABSTRACT: Protoclusters of galaxies, the progenitors of high-redshift galaxy clusters, are ideal laboratories to study dark matter assembly and galaxy evolution. However, despite of their importance, only a small and ...
  • POSSES NASCIMENTO, ANA CAROLINA (Observatorio NacionalDivisão de Programas de Pós-Graduação - DIPPGBrasilONPrograma de Pós-Graduação em Astronomia, 2019-03-26)
    Environmental effects in cluster RX J0152.7-1357, at z = 0.84 External mechanisms can transform galaxies over time. This occurs predominantly in denser environments such as groups and clusters of galaxies, where the ...
  • LOPES DE OLIVEIRA, NICOLAS OTAVIO (Observatorio NacionalDivisão de Programas de Pós-Graduação - DIPPGBrasilONPrograma de Pós-Graduação em Astronomia, 2020-03-13)
    The intracluster light (ICL) is defined as a low surface brightness component of galaxy clusters made up of stars that do not belong to any specific galaxy, but are linked to the system’s gravitational potential. Although ...
  • SOARES DA SILVA DE PINHO NOGUEIRA, PEDRO HENRIQUE (Observatorio NacionalDivisão de Programas de Pós-Graduação - DIPPGBrasilONPrograma de Pós-Graduação em Astronomia, 2020-04-30)
    Abstract The Kepler mission was designed to search for Earth-sized planets orbiting main-sequence stars. To achieve its goal, it used the transit method, analyzing light curves and searching for periodic decreases in flux ...
  • MASSON VICENTE, ALEXANDRE (Observatorio NacionalDivisão de Programas de Pós-Graduação - DIPPGBrasilONPrograma de Pós-Graduação em Astronomia, 2020-07-07)
    This work aims to obtain a non-parametric reconstruction of the temperature evolution law of the cosmic microwave background by the application of Gaussian Processes and to set constraints on cosmologies that violate the ...
  • BESSA RODRIGUES DUTRA, PEDRO HENRIQUE (Observatorio NacionalDivisão de Programas de Pós-Graduação - DIPPGBrasilONPrograma de Pós-Graduação em Astronomia, 2020-07-21)
    The Integrated Sachs-Wolfe effect is a Cold Microwave Background observable particularly sensitive to the change in cosmological eras dominated by different mat- ter components. Its temperature power spectrum is a strong ...