TEDE ON: Recent submissions

  • AYALA LOERA, MA DEL CARMEN (Observatorio NacionalDivisão de Programas de Pós-Graduação - DIPPGBrasilONPrograma de Pós-Graduação em Astronomia, 2019-07-25)
    This work reports the results of photometric studies of transNeptunian objetcs (TNOs). Absolute magnitudes and phase coefficient from TNOs were computed (H V and β V for 124 TNOs and H R and β R for 123 TNOs). We computed ...
  • MORGADO, BRUNO EDUARDO (Observatorio NacionalDivisão de Programas de Pós-Graduação - DIPPGBrasilONPrograma de Pós-Graduação em Astronomia, 2019-09-19)
    Progress in astrometry and in dynamical modeling of planetary systems have made possible the accurate estimation of tidal effects in natural moons and their planets. These studies have provided essential constraints on ...
  • FRAGA GUERCO, RAFAEL (Observatorio NacionalDivisão de Programas de Pós-Graduação - DIPPGBrasilONPrograma de Pós-Graduação em Astronomia, 2019-09-26)
    The astrophysical origin of fluorine is not yet well known, but it is suggested that this element might be produced in four sites: stars on the asymptotic giant branch, via neutron and proton captures during He-burning ...
  • LUCIO MEDEIROS, HISSA MARIA (Observatorio NacionalDivisão de Programas de Pós-Graduação - DIPPGBrasilONPrograma de Pós-Graduação em Astronomia, 2019-07-25)
    In order to contribute to a better understanding of the origin and evolution from different populations of small bodies, we did studies about some physical properties both obtained and from our observations. Initially, it ...
  • BAELLA PAJUELO, NOBAR OCTAVIO (Observatorio NacionalDivisão de Programas de Pós-Graduação - DIPPGBrasilONPrograma de Pós-Graduação em Astronomia, 2012-03-30)
    Entre as 180 estrelas simbióticas conhecidas existe um grupo especial classificado como simbióticas amarelas Tipo-S (SATS). Esses objetos apresentam uma alta velocidade radial e baixa metalicidade que correspondem a ...
  • DE CARVALHO FILHO, EDILSON (Observatorio NacionalDivisão de Programas de Pós-Graduação - DIPPGBrasilONPrograma de Pós-Graduação em Astronomia, 2019-12-11)
    Abstract The large scale structure of the Universe has been studied at several redshifts using different cosmic tracers. Among the methods employed, the search for the signature of the baryon acoustic oscillations (BAO) ...
  • DE FIGUEIREDO GSCHWEND, JULIA (Observatorio NacionalDivisão de Programas de Pós-Graduação - DIPPGBrasilONPrograma de Pós-Graduação em Astronomia, 2019-12-18)
    The Dark Energy Survey (DES) is an ongoing 5-year program that covers 5000 deg2 of the sky area in five optical-near infrared photometric bands (grizY), designed to measure the dark energy and dark matter densities and the ...
  • CACERES REATEGUI, JESSICA GIOVANNA (Observatorio NacionalDivisão de Programas de Pós-Graduação - DIPPGBrasilONPrograma de Pós-Graduação em Astronomia, 2020-01-29)
    Large The Influence of Planet Nine on the TNOs Orbits Abstract The hypothesis about the existence of an additional planet residing in the external solar system was recently proposed to explain the orbital confinements ...
  • BANDA HUARCA, MARTIN VALENTIN (Observatorio NacionalDivisão de Programas de Pós-Graduação - DIPPGBrasilONPrograma de Pós-Graduação em Astronomia, 2020-03-23)
    The Dark Energy Survey (DES) is an international collaborative effort to reveal the nature of the mysterious dark energy which is responsible for the accelerated expansion of the universe. For this, the survey mapped about ...
  • COSTA DE SOUZA, ALAN (Observatorio NacionalDivisão de Programas de Pós-Graduação - DIPPGBrasilONPrograma de Pós-Graduação em Astronomia, 2020-03-30)
    GPU PARALLELIZATION OF N-BODY ALGORITHMS AND APPLICATIONS TO EXTRASOLAR PLANETARY SYSTEMS Alan Costa de Souza ABSTRACT In this thesis, we analyzed the feasibility and implemented the parallelization of algorithms to solve ...
  • DE SOUZA FELICIANO, ANA CAROLINA (Observatorio NacionalDivisão de Programas de Pós-Graduação - DIPPGBrasilONPrograma de Pós-Graduação em Astronomia, 2020-04-14)
    In order to contribute to a better understanding of small bodies, we conducted an observational study of different groups of these objects. We developed an algorithm that uses the wavelet technique to improve the spectra ...
  • VIEIRA DE MELO MONTEIRO, FILIPE (Observatorio NacionalDivisão de Programas de Pós-Graduação - DIPPGBrasilONPrograma de Pós-Graduação em Astronomia, 2020-06-22)
    The population of near-Earth objects (NEOs) is one of the most interesting to be studied because, in addition to its members offering risk to Earth, they are also the smallest bodies in the Solar System whose physical ...
  • DE SOUZA, SANDRO RICARDO (Observatorio NacionalDivisão de Programas de Pós-Graduação - DIPPGBrasilONPrograma de Pós-Graduação em Astronomia, 2020-07-02)
    Title: Instability effects of giant planets on the dynamic evolution of terrestrial planets Abstract: In this thesis, we present studies on the effects of planetary migration in jumping-Jupiter models. Based on a variant ...
  • SAMPAIO DOS SANTOS, HILLYSSON BRUNO (Observatorio NacionalDivisão de Programas de Pós-Graduação - DIPPGBrasilONPrograma de Pós-Graduação em Astronomia, 2020-08-28)
    ABSTRACT DIFFUSE LIGHT IN GALAXY CLUSTERS ON DARK ENERGY SURVEY AND ITS CONNECTION WITH THEIR MASS We explore the relation between diffuse intracluster light (central galaxy included) and galaxy cluster mass using a sample ...
  • HOLANDA LUCIANO JUNIOR, JOSE NACIZO (Observatorio NacionalDivisão de Programas de Pós-Graduação - DIPPGBrasilONPrograma de Pós-Graduação em Astronomia, 2021-01-28)
    FROM FIELD STARS TO OPEN CLUSTERS: CHEMICAL STUDIES BASED ON HIGH-RESOLUTION SPECTRA Abstract This work presents four comprehensive chemical studies about red giant stars belonging to the field and two open clusters. The ...
  • FONTISIELLA MORELL, DAILER ROLANDO (Observatorio NacionalDivisão de Programas de Pós-Graduação - DIPPGBrasilONPrograma de Pós-Graduação em Astronomia, 2021-01-29)
    We analyse the dependence of galaxy evolution on cluster dynamical state and galaxy luminosities for a sample of 146 galaxy clusters from the Yang SDSS DR7 catalogue. Clusters were split according to their velocity ...
  • MARTINEZ RIBEIRO, EVANDRO (Observatorio NacionalDivisão de Programas de Pós-Graduação - DIPPGBrasilONPrograma de Pós-Graduação em Astronomia, 2015-03-20)
    The �� Cassiopeiae-like stars comprise a class of Be stars with variable hard thermal X- ray emission. For a long time, �� Cas was the odd man out among X-ray emitters. More recently, observations of stars with similar ...
  • DE SOUZA, SANDRO RICARDO (Observatorio NacionalDivisão de Programas de Pós-Graduação - DIPPGBrasilONPrograma de Pós-Graduação em Astronomia, 2015-03-30)
    Hypervelocity stars, or HVS, are stars having galactocentric velocities greater than the escape velocity of the Galaxy. The study of HVSs began when Hills (1988), using numerical simulations, predicted the disruption of a ...
  • FRAGA GUERCO, RAFAEL (Observatorio NacionalDivisão de Programas de Pós-Graduação - DIPPGBrasilONPrograma de Pós-Graduação em Astronomia, 2015-03-18)
    The origin of the element fluorine is not well known, but it is known that this element can be produced in three sites: spallation induced by neutrinos after the core collapse phase of a massive supernova; synthesis during ...
  • SILVA MARTINS FILHO, WALTER (Observatorio NacionalDivisão de Programas de Pós-Graduação - DIPPGBrasilONPrograma de Pós-Graduação em Astronomia, 2015-04-17)
    Differentiated family of asteroids is a family of asteroids that came from a differentiated parental body. The existence of metallic meteorites (McCoy et al., 2006, and references therein), taxonomic diversity in asteroid ...