Navegação Ciências Exatas e da Terra por Título

Resultados 4525-4544 de 5955

    • Scaling laws for breathing frequencies of solitary modes in the Zakharov equations 

      Oliveira, Glaucius Iahnke de; Rizzato, Felipe Barbedo (2002) [Artigo de periódico]
      We analyze typical time scales resulting from the coupled dynamics of high- and low-frequency wave components in solitary solutions of the Zakharov equations. Linear stability analysis around the solitary modes suggests ...

    • Scaling violation and shadowing corrections at HERA 

      Ayala Filho, Alvaro Leonardi; Gay Ducati, Maria Beatriz; Levin, E.M. (1999) [Artigo de periódico]
      We study the value of shadowing corrections (SC) in the HERA kinematic region in the Glauber{ Mueller approach. Since the Glauber{Mueller approach was proven in perturbative quantum chromodynamics (QCD) in the double-logarithmic ...

    • Sc and neutron-capture abundances in Galactic low- and high-α field halo stars 

      Fishlock, Cherie K.; Yong, David; Karakas, Amanda I.; Alves-Brito, Alan; Meléndez, Jorge; Nissen, Poul Erik; Kobayashi, Chiaki; Casey, Andrew Raithby (2017) [Artigo de periódico]
      We determine relative abundance ratios for the neutron-capture elements Zr, La, Ce, Nd and Eu for a sample of 27 Galactic dwarf stars with −1.5 < [Fe/H] < −0.8. We also measure the iron-peak element Sc. These stars separate ...

    • Scanning electron microscopy and machine learning reveal heterogeneity in capsular morphotypes of the human pathogen Cryptococcus spp. 

      Lopes, William; Cruz, Giuliano Netto Flores; Rodrigues, Márcio L.; Vainstein, Mendeli Henning; Silva, Lívia Kmetzsch Rosa e; Staats, Charley Christian; Vainstein, Marilene Henning; Schrank, Augusto (2020) [Artigo de periódico]
      Phenotypic heterogeneity is an important trait for the development and survival of many microorganisms including the yeast Cryptococcus spp., a deadly pathogen spread worldwide. Here, we have applied scanning electron ...

    • Scattering studies with low-energy kaon-proton femtoscopy in proton-proton collisions at the LHC 

      Acharya, Shreyasi; Gay Ducati, Maria Beatriz; Pereira, Luis Gustavo; Pezzi, Rafael Peretti; ALICE Collaboration (2020) [Artigo de periódico]
      The study of the strength and behavior of the antikaon-nucleon (¯KN) interaction constitutes one of the key focuses of the strangeness sector in low-energy quantum chromodynamics (QCD). In this Letter a unique high-precision ...

    • Schema evolution in the star framework 

      Fornari, Miguel Rodrigues; Golendziner, Lia Goldstein; Wagner, Flavio Rech (1998) [Artigo de periódico]
      The STAR data model supports the definition of object schemata, according either to some design methodology or to the designer's decision. Object schemata allow a flexible management of the various representations that are ...

    • Scientometric indicators for Brazilian research on High Energy Physics, 1983-2013 

      Alvarez, Gonzalo Rubén; Vanz, Samile Andrea de Souza; Barbosa, Marcia Cristina Bernardes (2017) [Artigo de periódico]
      This article presents an analysis of Brazilian research on High Energy Physics (HEP) indexed by Web of Science (WoS) from 1983 to 2013. Scientometric indicators for output, collaboration and impact were used to characterize ...

    • Screening of spherical colloids beyond mean field : a local density functional approach 

      Barbosa, Marcia Cristina Bernardes; Deserno, Markus; Holm, Christian; Messina, Rene (2004) [Artigo de periódico]
      We study the counterion distribution around a spherical macroion and its osmotic pressure in the framework of the recently developed Debye-Hückel-hole-cavity (DHHC) theory. This is a local density functional approach which ...

    • SDSS DR7 white dwarf catalog 

      Kleinman, Scot James; Kepler, Souza Oliveira; Koester, Detlev; Pelisoli, Ingrid Domingos; Antonio, Viviane Peçanha; Nitta, Atsuko; Costa, Jose Eduardo da Silveira; Krzesinski, Jerzy; Dufour, Patrick; Lachapelle, François-René; Bergeron, Pierre; Yip, Ching-Wa; Harris, Hugh C.; Eisenstein, Daniel, J.; Althaus, Leandro Gabriel; Córsico, Alejandro Hugo (2013) [Artigo de periódico]
      We present a new catalog of spectroscopically confirmed white dwarf stars from the Sloan Digital Sky Survey (SDSS) Data Release 7 spectroscopic catalog. We find 20,407 white dwarf spectra, representing 19,712 stars, and ...

    • SDSS-III : massive spectroscopic surveys of the distant universe, the Milk Way, and extra-solar planetary systems 

      Eisenstein, Daniel, J.; Weinberg, D.H.; Agol, Eric; Aihara, H.; Allende Prieto, Carlos; Anderson, S.F.; Arns, James A.; Aubourg, Éric; Bailey, Stephen; Balbinot, Eduardo; Barkhouser, Robert; Beers, T.C.; Berlind, Andreas A.; Bickerton, S.J.; Bizyaev, D.; Blanton, M.R.; Bochanski, J.J.; Bolton, Adam S.; Bosman, Casey T.; Bovy, Jo; Brandt, W.N.; Breslauer, Ben; Brewington, Howard J.; Brinkmann, Jon; Brown, Peter J.; Brownstein, Joel R.; Burger, Dan; Busca, Nicolas G.; Campbell, Heather; Cargile, Phillip A.; Carithers, William C.; Carlberg, J.K.; Carr, M.A.; Chang, Liang; Chen, Yanmei; Chiappini, C.C.M.; Comparat, Johan; Connolly, Natalia; Cortes, Marina; Croft, Rupert A.C.; Cunha, Katia; Costa, Luiz N. da; Davenport, J.R.A.; Dawson, K.S.; De Lee, Nathan M.; Mello, Gustavo Frederico Porto de; De Simoni, Fernando S.; Dean, Janice; Dhital, S.; Ealet, Anne; Ebelke, Garrett L.; Edmondson, E.M.; Eiting, J.M.; Escoffier, Stephanie; Esposito, Massimiliano; Evans, M.L.; Fan, Xiaohui; Femenía Castellá, B.; Ferreira, Letícia D.; Fitzgerald, Greg; Fleming, S.W.; Font-Ribera, A.; Ford, Eric B.; Frinchaboy, P.M.; García Pérez, Ana Elia; Gaudi, B. S.; Ge, Jian; Ghezzi, Luan; Gillespie, Bruce A.; Gilmore, Gerry; Girardi, Leo Alberto; Gott, J. Richard; Gould, Andrew; Grebel, Eva K.; Gunn, James E.; Hamilton, J.C.; Harding, Paul; Harris, D.W.; Hawley, Suzanne L.; Hearty, Frederick R.; Hennawi, J.F.; González Hernández, Jonay I.; Ho, Shirley; Hogg, D.W.; Holtzman, J.A.; Honscheid, K.; Inada, Naohisa; Ivans, Inese I.; Jiang, L.; Jiang, Peng; Johnson, J.A.; Jordan, Cathy; Jordan, W.P.; Kauffmann, Guinevere; Kazin, Eyal A.; Kirkby, David; Klaene, Mark A.; Knapp, G. R.; Kneib, J.P.; Kochanek, C.S.; Koesterke, L.; Kollmeier, Juna A.; Kron, Richard G.; Lampeitl, Hubert; Lang, Dustin; Lawler, J.E.; Le Goff, Jean-Marc; Lee, B.L.; Lee, Y.S.; Leisenring, J.M.; Lin, Y.-T.; Liu, Jian; Long, Daniel C.; Loomis, Craig P.; Lucatello, Sara; Lundgren, B.; Lupton, R.H.; Ma, Bo; Ma, Zhibo; Macdonald, Nicholas; Mack, C. E.; Mahadevan, Suvrath; Maia, Marcio Antonio Geimba; Majewski, Steven Raymond; Makler, Martín; Malanushenko, E.; Malanushenko, V.; Mandelbaum, Rachel; Maraston, Claudia; Margala, D.; Maseman, P.A.; Masters, K.L.; McBride, Cameron K.; McDonald, Patrick; McGreer, Ian D.; McMahon, Richard G.; Mena Requejo, Olga; Ménard, Brice; Miralda-Escudé, J.; Morrison, H.L.; Mullally, Fergal; Muna, Demitri; Murayama, H.; Myers, A.D.; Naugle, Tracy; Fausti Neto, Angelo; Nguyen, D.C.; Nichol, Robert C.; Nidever, D.L.; O'Connell, Robert West; Ogando, Ricardo L.C.; Olmstead, Matthew D.; Oravetz, Daniel J.; Padmanabhan, N.; Paegert, Martin; Palanque-Delabrouille, Nathalie; Pan, K.; Pandey, Parul; Parejko, J.K.; Pâris, Isabelle; Pellegrini, Paulo Sérgio de Souza; Pepper, J.; Percival, Will J.; Petitjean, P.; Pfaffenberger, Robert; Pforr, J.; Phleps, Stefanie; Pichon, C,; Pieri, Matthew M.; Prada, F.; Price-Whelan, Adrian M.; Raddick, M. Jordan; Ramos, Beatriz H.F.; Reid, I. Neill; Reylé, Céline; Rich, J.; Richards, G.T.; Rieke, G.H.; Rieke, M.J.; Rix, H.-W.; Robin, A.C.; Rocha-Pinto, H.J.; Rockosi, C.M.; Roe, Natalie A.; Rollinde, Emmanuel; Ross, A.J.; Ross, Nicholas P.; Rossetto, Bruno M.; Sánchez, Ariel G.; Santiago, Basilio Xavier; Sayres, Conor; Schiavon, Ricardo P.; Schlegel, David J.; Schlesinger, K.J.; Schmidt, Sarah. J.; Schneider, D.P.; Sellgren, K.; Bradley, Alaina C. Shelden; Sheldon, Erin; Shetrone, M.; Shu, Yiping; Silverman, J.D.; Simmerer, Jennifer; Simmons, Audrey E.; Sivarani, Thirupathi; Skrutskie, M.F.; Slosar, A.; Smee, Stephen; Smith, Verne V.; Snedden, S.A.; Stassun, Keivan G.; Steele, Oliver; Steinmetz, M.; Stockett, Mark H.; Stollberg, Todd; Strauss, Michael A.; Szalay, A.S.; Tanaka, M.; Thakar, Aniruddha; Thomas, D.; Tinker, Jeremy; Tofflemire, Benjamin M.; Tojeiro, R.; Tremonti, Christy A.; Vargas Magaña, Mariana; Verde, Licia; Vogt, N.P.; Wake, D.A.; Wan, Xiaoke; Wang, Ji; Weaver, Benjamin A.; White, M.; White, Simon D. M.; Wilson, J.C.; Wisniewski, J.P.; Wood-Vasey, W.M.; Yanny, Brian; Yasuda, Naoki; Yèche, Christophe; York, Donald G.; Young, E.; Zasowski, G.; Zehavi, I.; Zhao, Bo (2011) [Artigo de periódico]
      Building on the legacy of the Sloan Digital Sky Survey (SDSS-I and II), SDSS-III is a program of four spectroscopic surveys on three scientific themes: dark energy and cosmological parameters, the history and structure of ...

    • SDSS-IV MaNGA : environmental dependence of stellar age and metallicity gradients in nearby galaxies 

      Zheng, Zheng; Wang, Huiyuan; Ge, Junqiang; Mao, Shude; Li, Cheng; Li, Ran; Mo, Houjun; Goddard, Daniel; Bundy, Kevin; Li, Hongyu; Nair, Preethi B.; Lin, Lihwai; Long, Richard J.; Riffel, Rogério; Thomas, D.; Masters, K.L.; Bizyaev, D.; Brownstein, Joel R.; Zhang, Kai; Law, David R.; Drory, Niv; Lopes, Alexandre Roman; Malanushenko, E. (2017) [Artigo de periódico]
      We present a study on the stellar age and metallicity distributions for 1105 galaxies using the STARLIGHT software on MaNGA (Mapping Nearby Galaxies at APO) integral field spectra.We derive age and metallicity gradients ...

    • SDSS-IV MaNGA : excavating the fossil record of stellar populations in spiral galaxies 

      Peterken, Thomas G.; Merrifield, Michael; Aragón-Salamanca, Alfonso; Fraser-McKelvie, Amelia; Avila-Reese, Vladimir; Riffel, Rogério; Knapen, Johan Hendrik; Drory, Niv (2020) [Artigo de periódico]
      We perform a ‘fossil record’ analysis for ≈800 low-redshift spiral galaxies, using STARLIGHT applied to integral field spectroscopic observations from the SDSS-IV MaNGA survey to obtain fully spatially resolved high-resolution ...

    • SDSS-IV MaNGA : exploring the local scaling relations for N/O 

      Schaefer, Adam L.; Tremonti, Christy A.; Kauffmann, Guinevere; Andrews, Brett H.; Bershady, Matthew A.; Boardman, Nicholas Fraser; Bundy, Kevin; Drory, Niv; Fernández-Trincado, José Gregorio; Preece, Holly; Riffel, Rogério; Riffel, Rogemar André; Sánchez, Sebastián F. (2022) [Artigo de periódico]
      We present, for the first time, the relationship between local stellar mass surface density, Σ*, and N/O derived from SDSS-IV MaNGA data, using a sample of 792,765 high signal-to-noise ratio star-forming spaxels. Using a ...

    • SDSS-IV MaNGA : inside-out versus outside-in quenching of galaxies in different local environments 

      Lin, Lihwai; Hsieh, Bauching; Pan, Hsi An; Rembold, Sandro Barboza; Sánchez, Sebastián F.; Argudo-Fernández, Maria; Rowlands, Kate; Belfiore, Francesco; Bizyaev, D.; Lacerna, Ivan; Riffel, Rogério; Rong, Yu; Yuan, Fang; Drory, Niv; Maiolino, Roberto; Wilcots, Eric (2019) [Artigo de periódico]
      The large Integral Field Spectroscopy surveys have allowed the classification of ionizing sources of emission lines on sub-kiloparsec scales. In this work, we define two non-parametric parameters, quiescence (Fq) and its ...

    • SDSS IV MaNGA : metallicity and ionisation parameter in local star-forming galaxies from Bayesian fitting to photoionisation models 

      Mingozzi, Matilde; Belfiore, Francesco; Cresci, Giovanni; Bundy, Kevin; Bershady, Matthew A.; Bizyaev, D.; Blanc, Guillermo A.; Boquien, Médéric; Drory, Niv; Fu, Hai; Maiolino, Roberto; Riffel, Rogério; Rosario, David; Schaefer, Adam L.; Storchi-Bergmann, Thaisa; Telles, Jose Eduardo; Tremonti, Christy A.; Zakamska, Nadia L.; Zhang, Kai (2020) [Artigo de periódico]
      We measured gas-phase metallicity, ionisation parameter, and dust extinction for a representative sample of 1795 local star-forming galaxies using integral field spectroscopy from the SDSS-IV MaNGA survey. We self-consistently ...

    • SDSS-IV MaNGA : properties of galaxies with kinematically decoupled stellar and gaseous components 

      Jin, Yifei; Chen, Yanmei; Shi, Yong; Tremonti, Christy A.; Bershady, Matthew A.; Merrifield, Michael; Emsellem, Eric; Fu, Hai; Wake, D.A.; Bundy, Kevin; Lin, Lihwai; Argudo-Fernández, Maria; Huang, Song; Stark, David V.; Storchi-Bergmann, Thaisa; Bizyaev, D.; Brownstein, Joel R.; Chisholm, John P.; Guo, Qi; Hao, Lei; Hu, Jian; Li, Cheng; Li, Ran; Masters, K.L.; Malanushenko, E.; Pan, K.; Riffel, Rogemar André; Roman-Lopes, Alexandre; Simmons, Audrey E.; Thomas, D.; Wang, Lan; Westfall, Kyle B.; Yan, Renbin (2016) [Artigo de periódico]
      We study the properties of 66 galaxies with kinematically misaligned gas and stars from MaNGA survey. The fraction of kinematically misaligned galaxies varies with galaxy physical parameters, i.e. M∗, SFR and sSFR. According ...

    • SDSS-IV MaNGA : spatial evolution of star formation triggered by galaxy interactions 

      Pan, Hsi An; Lin, Lihwai; Hsieh, Bauching; Barrera-Ballesteros, Jorge; Sánchez, Sebastián F.; Hsu, Chin Hao; Keenan, Ryan C.; Tissera, Patricia Beatriz; Boquien, Médéric; Dai, Yu Sophia; Knapen, Johan Hendrik; Riffel, Rogério; Argudo-Fernández, Maria; Xiao, Ting; Yuan, Fang (2019) [Artigo de periódico]
      Galaxy interaction is considered a key driver of galaxy evolution and star formation (SF) history. In this paper, we present an empirical picture of the radial extent of interaction-triggered SF along the merger sequence. ...

    • SDSS-IV MaNGA : spatially resolved star formation histories in galaxies as a function of galaxy mass and type 

      Goddard, Daniel; Thomas, D.; Maraston, Claudia; Westfall, Kyle B.; Etherington, James; Riffel, Rogério; Mallmann, Nícolas Dullius; Zheng, Zheng; Argudo-Fernández, Maria; Lian, Jianhui; Bershady, Matthew A.; Bundy, Kevin; Drory, Niv; Law, David R.; Yan, Renbin; Wake, D.A.; Weijmans, Anne Marie; Bizyaev, D.; Brownstein, Joel R.; Lane, Richard R.; Maiolino, Roberto; Masters, K.L.; Merrifield, Michael; Nitschelm, Christian; Pan, K.; Roman-Lopes, Alexandre; Storchi-Bergmann, Thaisa; Schneider, D.P. (2017) [Artigo de periódico]
      We study the internal gradients of stellar population propertieswithin 1.5 Re for a representative sample of 721 galaxies, with stellar masses ranging between 109M and 1011.5M from the SDSS-IV MaNGA Integral-Field-Unit ...

    • SDSS-IV MaNGA : spatially resolved star formation main sequence and LI(N)ER sequence 

      Hsieh, Bauching; Lin, Lihwai; Lin, Jing Hua; Pan, Hsi An; Hsu, Chin Hao; Sánchez, Sebastián F.; Cano-Díaz, Mariana; Zhang, Kai; Yan, Renbin; Barrera-Ballesteros, Jorge; Boquien, Médéric; Riffel, Rogério; Brownstein, Joel R.; Cruz-Gonzalez, Irene; Hagen, Alex; Ibarra, H.; Pan, K.; Bizyaev, D.; Oravetz, Daniel J.; Simmons, Audrey E. (2017) [Artigo de periódico]
      We present our study on the spatially resolved Hαand M*relation for 536 star-forming and 424 quiescent galaxies taken from the MaNGA survey. We show that the star formation rate surface density (SSFR), derived based on ...

    • SDSS-IV MaNGA : star formation cessation in low-redshift galaxies. I. Dependence on stellar mass and structural properties 

      Wang, Enci; Li, Cheng; Xiao, Ting; Lin, L.; Bershady, Matthew A.; Law, David R.; Merrifield, Michael; Sánchez, Sebastián F.; Riffel, Rogemar André; Riffel, Rogério; Yan, Renbin (2018) [Artigo de periódico]
      We investigate radial gradients in the recent star formation history (SFH) of 1917 galaxies with 0.01 < z < 0.14 from the Mapping Nearby Galaxies at Apache Point Observatory project. For each galaxy, we obtain twodimensional ...