Now showing items 1-17 of 17

    • Análise de diagramas cor-magnitude de aglomerados globulares galácticos 

      Pieres, Adriano (2013) [Dissertation]
      Neste trabalho eu desenvolvo um método para a determinação dos quatro principais parâmetros de um aglomerado globular (idade, metalicidade, avermelhamento e modulo de distancia) através de diagramas cor-magnitude, por ...
    • Deep SOAR follow-up photometry of two Milky Way outer-halo companions discovered with Dark Energy Survey 

      Luque Canaza, Elmer Fidel; Santiago, Basilio Xavier; Pieres, Adriano; Queiroz, Anna Bárbara de Andrade; Dal Ponte, Marina; Thomas, D. (2018) [Journal article]
      We report the discovery of a new star cluster, DES 3, in the constellation of Indus, and deeper observations of the previously identified satellite DES J0222.7−5217 (Eridanus III). DES 3 was detected as a stellar overdensity ...
    • Digging deeper into the Southern skies : a compact Milky Way companion discovered in first-year Dark Energy Survey data 

      Luque Canaza, Elmer Fidel; Queiroz, Anna Bárbara de Andrade; Santiago, Basilio Xavier; Pieres, Adriano; Balbinot, Eduardo; Bechtol, Keith; Drlica-Wagner, Alex; Fausti Neto, Angelo; Costa, Luiz N. da; Maia, Marcio Antonio Geimba; Yanny, Brian; Abbott, Timothy M. C.; Allam, Sahar S.; Benoit-Lévy, Aurélien; Bertin, Emmanuel; Brooks, D.; Buckley-Geer, Elizabeth; Burke, David Lyle; Carnero Rosell, Aurelio; Carrasco Kind, Matías; Carretero Palacios, Jorge; Cunha, Carlos Eduardo; Desai, S.; Diehl, H. Thomas; Dietrich, Jörg P.; Eifler, Tim; Finley, David A.; Flaugher, Brenna; Fosalba Vela, Pablo; Frieman, Joshua A.; Gerdes, David W.; Gruen, Daniel; Gutierrez, Gaston R.; Honscheid, K.; James, David J.; Kuehn, Kyler; Kuropatkin, Nikolay P.; Lahav, Ofer; Li, T. S.; March, Marisa Cristina; Marshall, Jennifer L.; Martini, Paul; Miquel, Ramon; Neilsen, Eric H.; Nichol, Robert C.; Nord, Brian Dennis; Ogando, Ricardo L.C.; Plazas Malagón, Andrés Alejandro; Romer, Anita K.; Roodman, Aaron; Sanchez-Alvaro, Eusebio; Scarpine, Victor Emanuel; Schubnell, Michael; Sevilla Noarbe, Ignacio; Smith, Robert Christopher; Soares-Santos, Marcelle; Sobreira, Flávia; Suchyta, Eric; Swanson, Molly E. C.; Tarle, Gregory; Thaler, Jon J.; Tucker, Douglas L.; Walker, Alistair; Zhang, Y.; DES Collaboration (2016) [Journal article]
      We use the first-year Dark Energy Survey (DES) data down to previously unprobed photometric depths to search for stellar systems in the Galactic halo, therefore complementing the previous analysis of the same data carried ...
    • Eight new Milky Way companions discovered in first-year Dark Energy Survey data 

      Bechtol, Keith; Drlica-Wagner, Alex; Balbinot, Eduardo; Pieres, Adriano; Simon, Josh D.; Yanny, Brian; Santiago, Basilio Xavier; Wechsler, Risa H.; Frieman, Joshua A.; Walker, Alistair; Williams, P.; Rozo, Eduardo; Rykoff, Eli; Queiroz, Anna Bárbara de Andrade; Luque Canaza, Elmer Fidel; Benoit-Lévy, Aurélien; Tucker, Douglas L.; Sevilla Noarbe, Ignacio; Gruendl, Robert A.; Costa, Luiz N. da; Fausti Neto, Angelo; Maia, Marcio Antonio Geimba; Abbott, Timothy M. C.; Allam, Sahar S.; Armstrong, Robert; Bauer, Anne Hollister; Bernstein, Gary M.; Bernstein, Rebecca A.; Bertin, Emmanuel; Brooks, D.; Buckley-Geer, Elizabeth; Burke, David Lyle; Carnero Rosell, Aurelio; Castander Serentill, Francisco Javier; Covarrubias, Ricardo A.; D'Andrea, Christopher B.; DePoy, Darren L.; Desai, S.; Diehl, H. Thomas; Eifler, Tim; Estrada, Juan; Evrard, August E.; Fernandez, Enrique; Finley, David A.; Flaugher, Brenna; Gaztañaga, Enrique; Gerdes, David W.; Girardi, Leo Alberto; Gladders, Michael David; Gruen, Daniel; Gutierrez, Gaston R.; Hao, Jiangang; Honscheid, K.; Jain, Bhuvnesh; James, David J.; Kent, Stephen M.; Kron, Richard G.; Kuehn, Kyler; Kuropatkin, Nikolay P.; Lahav, Ofer; Li, T. S.; Lin, H.; Makler, Martín; March, Marisa Cristina; Marshall, Jennifer L.; Martini, Paul; Merritt, K. Wyatt; Miller, Christopher J.; Miquel, Ramon; Mohr, Joseph J.; Neilsen, Eric H.; Nichol, Robert C.; Nord, Brian Dennis; Ogando, Ricardo L.C.; Peoples, John; Petravick, Donald L.; Plazas Malagón, Andrés Alejandro; Romer, Anita K.; Roodman, Aaron; Sako, Masao; Sanchez-Alvaro, Eusebio; Scarpine, Victor Emanuel; Schubnell, Michael; Smith, Robert Christopher; Soares-Santos, Marcelle; Sobreira, Flávia; Suchyta, Eric; Swanson, Molly E. C.; Tarle, Gregory; Thaler, Jon J.; Thomas, D.; Wester, William Carl; Zuntz, J.; DES Collaboration (2015) [Journal article]
      We report the discovery of eight new Milky Way companions in ~1800 deg2 of optical imaging data collected during the first year of the Dark Energy Survey (DES). Each system is identified as a statistically significant ...
    • Eight ultra-faint galaxy candidates discovered in year two the Dark Energy Survey 

      Drlica-Wagner, Alex; Bechtol, Keith; Rykoff, Eli; Luque Canaza, Elmer Fidel; Queiroz, Anna Bárbara de Andrade; Mao, Yao-Yuan; Wechsler, Risa H.; Simon, Josh D.; Santiago, Basilio Xavier; Yanny, Brian; Balbinot, Eduardo; Dodelson, Scott; Fausti Neto, Angelo; James, David J.; Li, T. S.; Maia, Marcio Antonio Geimba; Marshall, Jennifer L.; Pieres, Adriano; Stringer, Katelyn M.; Walker, Alistair; Abbott, Timothy M. C.; Abdalla, Filipe B.; Allam, Sahar S.; Benoit-Lévy, Aurélien; Bernstein, Rebecca A.; Bernstein, Gary M.; Bertin, Emmanuel; Brooks, D.; Buckley-Geer, Elizabeth; Burke, David Lyle; Carnero Rosell, Aurelio; Carrasco Kind, Matías; Carretero Palacios, Jorge; Crocce, Martin; Costa, Luiz N. da; Desai, S.; Diehl, H. Thomas; Dietrich, Jörg P.; Doel, Peter; Eifler, Tim; Evrard, August E.; Flaugher, Brenna; Fosalba Vela, Pablo; Frieman, Joshua A.; Gaztañaga, Enrique; Gerdes, David W.; Gruen, Daniel; Gruendl, Robert A.; Gutierrez, Gaston R.; Honscheid, K.; Kuehn, Kyler; Kuropatkin, Nikolay P.; Lahav, Ofer; Miquel, Ramon; Nord, Brian Dennis; Ogando, Ricardo L.C.; Plazas Malagón, Andrés Alejandro; Reil, Kevin; Roodman, Aaron; Sako, Masao; Sanchez-Alvaro, Eusebio; Scarpine, Victor Emanuel; Schubnell, Michael; Sevilla Noarbe, Ignacio; Smith, Robert Christopher; Soares-Santos, Marcelle; Sobreira, Flávia; Suchyta, Eric; Swanson, Molly E. C.; Tarle, Gregory; Tucker, Douglas L.; Vikram, Vinu; Wester, William Carl; Zhang, Yuanyuan; Zuntz, J.; DES Collaboration (2015) [Journal article]
      We report the discovery of eight new ultra-faint dwarf galaxy candidates in the second year of optical imaging data from the Dark Energy Survey (DES). Six of these candidates are detected at high confidence, while two ...
    • Modelling the Milky Way : I. Method and first results fitting the thick disc and halo with DES-Y3 data 

      Pieres, Adriano; Santiago, Basilio Xavier; DES Collaboration (2020) [Journal article]
      We present a technique to fit the stellar components of the Galaxy by comparing Hess Diagrams (HDs) generated from TRILEGAL models to real data. We apply this technique, which we call MWFITTING, to photometric data from ...
    • New SX Phe variables in the globular cluster NGC 288 

      Martinazzi, Elizandra; Kepler, Souza Oliveira; Costa, Jose Eduardo da Silveira; Pieres, Adriano; Bonatto, Charles Jose; Bica, Eduardo Luiz Damiani; Fraga, Luciano (2015) [Journal article]
      We report the discovery of two new variable stars in the metal-poor globular cluster NGC 288, found by means of time series CCD photometry. We classified the new variables as SX Phoenicis (SX Phe) due to their characteristic ...
    • Uma nova visão sobre a periferia das Nuvens de Magalhães 

      Pieres, Adriano (2017) [Thesis]
      Nossa amostra de trabalho consistiu das cercanias das Nuvens de Magalhães dentro da area amostrada pelo Dark Energy Survey. Nos concentramos na amostra de aglomerados da Grande Nuvem de Magalhães e na descoberta de uma ...
    • Physical properties of star clusters in the outer LMC as observed by the DES 

      Pieres, Adriano; Santiago, Basilio Xavier; Balbinot, Eduardo; Luque Canaza, Elmer Fidel; Queiroz, Anna Bárbara de Andrade; Costa, Luiz N. da; Maia, Marcio Antonio Geimba; Drlica-Wagner, Alex; Roodman, Aaron; Abbott, Timothy M. C.; Allam, Sahar S.; Benoit-Lévy, Aurélien; Bertin, Emmanuel; Brooks, D.; Buckley-Geer, E.; Burke, David Lyle; Carnero Rosell, Aurelio; Carrasco Kind, Matías; Carretero Palacios, Jorge; Cunha, Carlos Eduardo; Desai, S.; Diehl, H. Thomas; Eifler, Tim; Finley, David A.; Flaugher, Brenna; Fosalba Vela, Pablo; Frieman, Joshua A.; Gerdes, David W.; Gruen, Daniel; Gruendl, Robert A.; Gutierrez, Gaston R.; Honscheid, K. (Klaus); James, David J.; Kuehn, Kyler; Kuropatkin, Nikolay P.; Lahav, Ofer; Li, T. S.; Marshall, Jennifer L.; Martini, Paul; Miller, Christopher J.; Miquel, Ramon; Nichol, Robert C.; Nord, Brian Dennis; Ogando, Ricardo L.C.; Plazas Malagón, Andrés Alejandro; Romer, Anita K.; Sanchez-Alvaro, Eusebio; Scarpine, Victor Emanuel; Schubnell, Michael; Sevilla Noarbe, Ignacio; Smith, Robert Christopher; Soares-Santos, Marcelle; Sobreira, Flávia; Suchyta, Eric; Swanson, Molly E. C.; Tarle, Gregory; Thaler, Jon J.; Thomas, D.; Tucker, Douglas L.; Walker, Alistair (2016) [Journal article]
      The Large Magellanic Cloud (LMC) harbours a rich and diverse system of star clusters, whose ages, chemical abundances and positions provide information about the LMC history of star formation. We use Science Verification ...
    • O planisfério lunar 

      Pieres, Adriano (2011) [Abstract published in event]
    • Probing mass segregation in the globular cluster NGC 6397 

      Martinazzi, Elizandra; Pieres, Adriano; Kepler, Souza Oliveira; Costa, Jose Eduardo da Silveira; Bonatto, Charles Jose; Bica, Eduardo Luiz Damiani (2014) [Journal article]
      In this study, we present a detailed study of mass segregation in the globular cluster NGC 6397. First, we carry out a photometric analysis of projected European SouthernObservatory (ESO)– Very Large Telescope (VLT) data ...
    • Search for gamma-ray emission from DES dwarf spheroidal galaxy candidates with Fermi-LAT data 

      Drlica-Wagner, Alex; Albert, Andrea; Bechtol, Keith; Wood, Matthew Dunseth; Strigari, Louis E.; Sánchez-Conde, Miguel A.; Baldini, Luca; Essig, Rouven; Cohen-Tanugi, Johann; Anderson, Brandon; Bellazzini, Ronaldo; Bloom, Elliott D.; Caputo, Regina; Cecchi, Claudia; Charles, Eric Andre; Chiang, James; De Angelis, Alessandro; Funk, Stefan; Fusco, Piergiorgio; Gargano, Fabio; Giglietto, Nico; Giordano, Francesco; Guiriec, Sylvain; Gustafsson, Michael; Kuss, Michael; Loparco, Francesco; Lubrano, Pasquale; Mirabal, N.; Mizuno, Tsunefumi; Morselli, Aldo; Ohsugi, Takashi; Orlando, Elena; Persic, Massimo; Raino, Silvia; Spada, Francesca Romana; Suson, Daniel J.; Zaharijas, Gabrijela; Zimmer, Stephan; Abbott, Timothy M. C.; Allam, Sahar S.; Balbinot, Eduardo; Bauer, Anne Hollister; Benoit-Lévy, Aurélien; Bernstein, Rebecca A.; Bernstein, Gary M.; Bertin, Emmanuel; Brooks, D.; Buckley-Geer, Elizabeth; Burke, David Lyle; Carnero Rosell, Aurelio; Castander Serentill, Francisco Javier; Covarrubias, Ricardo A.; D'Andrea, Christopher B.; Costa, Luiz N. da; DePoy, Darren L.; Desai, S.; Diehl, H. Thomas; Cunha, Carlos Eduardo; Eifler, Tim; Estrada, Juan; Evrard, August E.; Fausti Neto, Angelo; Fernandez, Enrique; Finley, David A.; Flaugher, Brenna; Frieman, Joshua A.; Gaztañaga, Enrique; Gerdes, David W.; Gruen, Daniel; Gruendl, Robert A.; Gutierrez, Gaston R.; Honscheid, K.; Jain, Bhuvnesh; James, David J.; Jeltema, Tesla E.; Kent, Stephen M.; Kron, Richard G.; Kuehn, Kyler; Kuropatkin, Nikolay P.; Lahav, Ofer; Li, T. S.; Luque Canaza, Elmer Fidel; Maia, Marcio Antonio Geimba; Makler, Martín; March, Marisa Cristina; Marshall, Jennifer L.; Martini, Paul; Merritt, K. Wyatt; Miller, Christopher J.; Miquel, Ramon; Mohr, Joseph J.; Neilsen, Eric H.; Nord, Brian Dennis; Ogando, Ricardo L.C.; Peoples, John; Petravick, Donald L.; Pieres, Adriano; Plazas Malagón, Andrés Alejandro; Queiroz, Anna Bárbara de Andrade; Romer, Anita K.; Roodman, Aaron; Rykoff, Eli; Sako, Masao; Sanchez-Alvaro, Eusebio; Santiago, Basilio Xavier; Scarpine, Victor Emanuel; Schubnell, Michael; Sevilla Noarbe, Ignacio; Smith, Robert Christopher; Soares-Santos, Marcelle; Sobreira, Flávia; Suchyta, Eric; Swanson, Molly E. C.; Tarle, Gregory; Thaler, Jon J.; Thomas, D.; Tucker, Douglas L.; Walker, Alistair; Wechsler, Risa H.; Wester, William Carl; Williams, P.; Yanny, Brian; Zuntz, J.; Fermi LAT Collaboration; DES Collaboration (2015) [Journal article]
      Due to their proximity, high dark-matter (DM) content, and apparent absence of non-thermal processes, Milky Way dwarf spheroidal satellite galaxies (dSphs) are excellent targets for the indirect detection of DM. Recently, ...
    • A stellar overdensity associated with the Small Magellanic Cloud 

      Pieres, Adriano; Santiago, Basilio Xavier; Drlica-Wagner, Alex; Bechtol, Keith; Marel, Roeland Paul van der; Besla, Gurtina; Martin, Nicolas F.; Belokurov, Vasily; Gallart, Carme; Martínez-Delgado, David; Marshall, Jennifer L.; Nöel, N. E. D.; Majewski, Steven Raymond; Cioni, Maria-Rosa L.; Li, T. S.; Hartley, William; Luque Canaza, Elmer Fidel; Conn, Blair Campbell; Walker, Alistair; Balbinot, Eduardo; Stringfellow, Guy S.; Olsen, Knut A. G.; Nidever, D.L.; Costa, Luiz N. da; Ogando, Ricardo L.C.; Maia, Marcio Antonio Geimba; Fausti Neto, Angelo; Abbott, Timothy M. C.; Abdalla, Filipe B.; Allam, Sahar S.; Annis, James T.; Benoit-Lévy, Aurélien; Carnero Rosell, Aurelio; Carrasco Kind, Matías; Carretero Palacios, Jorge; Cunha, Carlos Eduardo; D'Andrea, Christopher B.; Desai, S.; Diehl, H. Thomas; Doel, Peter; Flaugher, Brenna; Fosalba Vela, Pablo; García-Bellido, Juan; Gruen, Daniel; Gruendl, Robert A.; Gschwend, Julia de Figueiredo; Gutierrez, Gaston R.; Honscheid, K.; James, David J.; Kuehn, Kyler; Kuropatkin, Nikolay P.; Menanteau, Felipe; Miquel, Ramon; Plazas Malagón, Andrés Alejandro; Romer, Anita K.; Sako, Mari; Sanchez-Alvaro, Eusebio; Scarpine, Victor Emanuel; Schubnell, Michael; Sevilla Noarbe, Ignacio; Smith, Robert Christopher; Soares-Santos, Marcelle; Sobreira, Flávia; Suchyta, Eric; Swanson, Molly E. C.; Tarle, Gregory; Tucker, Douglas L.; Wester, William Carl (2017) [Journal article]
      We report the discovery of a stellar overdensity 8◦ north of the centre of the Small Magellanic Cloud (SMC; Small Magellanic Cloud Northern Over-Density; SMCNOD), using data from the first 2 yr of the Dark Energy Survey ...
    • The Dark Energy Survey view of the Sagittarius stream : discovery of two faint stellar system candidates 

      Luque Canaza, Elmer Fidel; Pieres, Adriano; Santiago, Basilio Xavier; Yanny, Brian; Vivas, Anna Katherina; Queiroz, Anna Bárbara de Andrade; Drlica-Wagner, Alex; Morganson, Eric; Balbinot, Eduardo; Marshall, Jennifer L.; Li, T. S.; Fausti Neto, Angelo; Costa, Luiz N. da; Maia, Marcio Antonio Geimba; Bechtol, Keith; Kim, A. G.; Bernstein, Gary M.; Dodelson, Scott; Whiteway, L.; Diehl, H. Thomas; Finley, David A.; Abbott, Timothy M. C.; Abdalla, Filipe B.; Allam, Sahar S.; Annis, James T.; Benoit-Lévy, Aurélien; Bertin, Emmanuel; Brooks, D.; Burke, David Lyle; Carnero Rosell, Aurelio; Carrasco Kind, Matías; Carretero Palacios, Jorge; Cunha, Carlos Eduardo; D'Andrea, Christopher B.; Desai, S.; Doel, Peter; Evrard, August E.; Flaugher, Brenna; Fosalba Vela, Pablo; Gerdes, David W.; Goldstein, Daniel Abraham; Gruen, Daniel; Gruendl, Robert A.; Gutierrez, Gaston R.; James, David J.; Kuehn, Kyler; Kuropatkin, Nikolay P.; Lahav, Ofer; Martini, Paul; Miquel, Ramon; Nord, Brian Dennis; Ogando, Ricardo L.C.; Plazas Malagón, Andrés Alejandro; Romer, Anita K.; Sanchez-Alvaro, Eusebio; Scarpine, Victor Emanuel; Schubnell, Michael; Sevilla Noarbe, Ignacio; Smith, Robert Christopher; Soares-Santos, Marcelle; Sobreira, Flávia; Suchyta, Eric; Swanson, Molly E. C.; Tarle, Gregory; Thomas, D.; Walker, Alistair (2017) [Journal article]
      We report the discovery of two new candidate stellar systems in the constellation of Cetus using the data from the first two years of the Dark Energy Survey (DES). The objects, DES J0111−1341 and DES J0225+0304, are located ...
    • The LMC geometry and outer stellar populations from early DES data 

      Balbinot, Eduardo; Santiago, Basilio Xavier; Girardi, Leo Alberto; Pieres, Adriano; Costa, Luiz N. da; Maia, Marcio Antonio Geimba; Gruendl, Robert A.; Walker, Alistair; Yanny, Brian; Drlica-Wagner, Alex; Benoit-Lévy, Aurélien; Abbott, Timothy M. C.; Allam, Sahar S.; Annis, James T.; Bernstein, Joseph P.; Bernstein, Rebecca A.; Bertin, Emmanuel; Brooks, D.; Buckley-Geer, Elizabeth; Carnero Rosell, Aurelio; Cunha, Carlos Eduardo; DePoy, Darren L.; Desai, S.; Diehl, H. Thomas; Doel, Peter; Estrada, Juan; Evrard, August E.; Fausti Neto, Angelo; Finley, David A.; Flaugher, Brenna; Frieman, Joshua A.; Gruen, Daniel; Honscheid, K.; James, David J.; Kuehn, Kyler; Kuropatkin, Nikolay P.; Lahav, Ofer; March, Marisa Cristina; Marshall, Jennifer L.; Miller, Christopher J.; Miquel, Ramon; Ogando, Ricardo L.C.; Peoples, John; Plazas Malagón, Andrés Alejandro; Scarpine, Victor Emanuel; Schubnell, Michael; Sevilla Noarbe, Ignacio; Smith, Robert Christopher; Soares-Santos, Marcelle; Suchyta, Eric; Swanson, Molly E. C.; Tarle, Gregory; Tucker, Douglas L.; Wechsler, Risa H.; Zuntz, J. (2015) [Journal article]
      The Dark Energy Camera has captured a large set of images as part of Science Verification (SV) for the Dark Energy Survey (DES). The SV footprint covers a large portion of the outer LargeMagellanic Cloud (LMC), providing ...
    • The Phoenix stream : a cold stream in the southern hemisphere 

      Balbinot, Eduardo; Yanny, Brian; Li, T. S.; Santiago, Basilio Xavier; Marshall, Jennifer L.; Finley, David A.; Pieres, Adriano; Abbott, Timothy M. C.; Abdalla, Filipe B.; Allam, Sahar S.; Benoit-Lévy, Aurélien; Bernstein, Gary M.; Bertin, Emmanuel; Brooks, D.; Burke, David Lyle; Carnero Rosell, Aurelio; Carrasco Kind, Matías; Carretero Palacios, Jorge; Cunha, Carlos Eduardo; Costa, Luiz N. da; DePoy, Darren L.; Desai, S.; Diehl, H. Thomas; Doel, Peter; Estrada, Juan; Flaugher, Brenna; Frieman, Joshua A.; Gerdes, David W.; Gruen, Daniel; Gruendl, Robert A.; Honscheid, K.; James, David J.; Kuehn, Kyler; Kuropatkin, Nikolay P.; Lahav, Ofer; March, Marisa Cristina; Martini, Paul; Miquel, Ramon; Nichol, Robert C.; Ogando, Ricardo L.C.; Romer, Anita K.; Sanchez-Alvaro, Eusebio; Schubnell, Michael; Sevilla Noarbe, Ignacio; Smith, Robert Christopher; Soares-Santos, Marcelle; Sobreira, Flávia; Suchyta, Eric; Tarle, Gregory; Thomas, D.; Tucker, Douglas L.; Walker, Alistair; DES Collaboration (2016) [Journal article]
      We report the discovery of a stellar stream in the Dark Energy Survey Year 1 (Y1A1) data. The discovery was made through simple color–magnitude filters and visual inspection of the Y1A1 data. We refer to this new object ...
    • Venha conhecer o lado negro do Universo 

      Teixeira, Eduardo; Pieres, Adriano; Chuvas, Walberto; Fabris, Jonata; Chuvas, Walberto; Sperotto, Luiz; Teixeira, Eduardo; Teixeira, Eduardo; Munhoz, Lysiane; Teixeira, Eduardo; Paludo, Letícia; Netto, Victória; Favaretto, Fernando (2015-06-18) [Video]
      O pesquisador Adriano Pieres fala sobre os diversos fenômenos que acontecem no Universo, com atenção especial à matéria e energia escura.