Browsing by Title Artículos de revistas

Now showing items 5708-5727 of 7550

    • Scheduling the South American qualifiers to the 2018 FIFA World Cup by integer programming 
      Durán, Guillermo; Guajardo, Mario; Sauré Valenzuela, Denis (Elsevier, 2017)
      Every four years, the 10 national teams members of the South American Football Confederation (CON- MEBOL) compete for one of the South American slots in the final phase of the FIFA World Cup. The qual- ifying competition ...
    • School location and capacity modification considering the existence of externalities in students school choice 
      Castillo López, Iván; López Ospina, Héctor A. (Elsevier, 2015)
      Geographic and socioeconomic characteristics of rural zones in Chile have made schools located in these areas present inefficiencies such long travel times and multi-degree courses(1) that affect the academic performance ...
    • Scientific controversy as a disaster risk factor: The 2007 seismic crisis in Patagonia, Chile 
      Marin, Juliette; Cortés Oggero, Julian; Aliste Almuna, Enrique; Campos Muñoz, Jaime (Elsevier, 2020)
      In 2007, a sequence of geophysical events occurred in Chilean Patagonia that manifested themselves in a series of earthquakes and a fjord tsunami, causing many months of disruption to the normal functioning of a region not ...
    • Scintillation-limited photometry with the 20-cm NGTS telescopes at Paranal observatory 
      O’Brien, Sean M.; Bayliss, Daniel; Osborn, James; Bryant, Edward M.; McCormac, James; Wheatley, Peter J.; Acton, Jack S.; Alves, Douglas R.; Anderson, David R.; Burleigh, Matthew R.; Casewell, Sarah L.; Gill, Samuel; Goad, Michael R.; Henderson, Beth A.; Jackman, James A. G.; Lendl, Monika; Tilbrook, Rosanna H.; Udry, Stéphane; Vines, Jose I.; West, Richard G. (Oxford University Press, 2022)
      Ground-based photometry of bright stars is expected to be limited by atmospheric scintillation, although in practice observations are often limited by other sources of systematic noise. We analyse 122 nights of bright star ...
    • SCOPE: SCUBA-2 Continuum Observations of Pre-protostellar Evolution - Survey description and compact source ... 
      Eden, D. J.; Liu, Tie; Kim, Kee Tae; Juvela, M.; Liu, S. Y.; Tatematsu, K.; Di Francesco, J.; Wang, K.; Wu, Y.; Thompson, M. A.; Fuller, G. A.; Li, Di; Ristorcelli, I.; Kang, Sung Ju; Hirano, N.; Johnstone, D.; Lin, Y.; He, J. H.; Koch, P. M.; Sanhueza, Patricio; Qin, S. L.; (Oxford University Press, 2019)
      We present the first release of the data and compact-source catalogue for the JCMT Large Program SCUBA-2 Continuum Observations of Pre-protostellar Evolution (SCOPE). SCOPE consists of 850 μm continuum observations of 1235 ...
    • A SCUBA-2 850-μm survey of protoplanetary discs in the IC 348 cluster 
      Cieza, L.; Williams, J.; Kourkchi, E.; Andrews, S.; Casassus Montero, Simón; Graves, S.; Schreiber, M. (Royal Astronomical Society, 2015)
      We present 850-µm observations of the 2–3 Myr cluster IC 348 in the Perseus molecular cloud using the SCUBA-2 camera on the James Clerk Maxwell Telescope. Our SCUBA-2 map has a diameter of 30 arcmin and contains ∼370 ...
    • Sculpting the disk around T Chamaeleontis: an interferometric view 
      Olofsson, J.; Benisty, Myriam; Le Bouquin, J. B.; Berger, J. P; Lacour, S.; Ménard, Francois; Henning, Thomas; Crida, A.; Burtscher, L.; Meeus, G.; Ratzka, T.; Pinte, Christophe; Augereau, J. C.; Malbet, F.; Lazare, B.; Traub, W. (EDP Sciences, 2013)
      Context. Circumstellar disks are believed to be the birthplace of planets and are expected to dissipate on a timescale of a few Myr. The processes responsible for the removal of the dust and gas will strongly modify the ...
    • SDSS IV MaNGA: Metallicity and ionisation parameter in local star-forming galaxies from Bayesian fitting ... 
      Mingozzi, M.; Belfiore, F.; Cresci, G.; Bundy, K.; Bershady, M.; Bizyaev, D.; Blanc Mendiberri, Guillermo; Boquien, M.; Drory, N.; Fu, H.; Maiolino, R.; Riffel, R.; Schaefer, A.; Storchi-Bergmann, T.; Telles, E.; Tremonti, C.; Zakamska, N.; Zhang, K. (EDP Sciences, 2020)
    • THE SDSS-III BARYON OSCILLATION SPECTROSCOPIC SURVEY: THE QUASAR LUMINOSITY FUNCTION FROM DATA RELEASE NINE 
      Ross, Nicholas P.; McGreer, I.; White, Martin; Richards, Gordon; Myers, Adam D.; Palanque-Delabrouille, Nathalie; Strauss, Michael; Anderson, Scott; Shen, Yue; Brandt, W. N.; Yèche, Ch.; Swanson, Molly E.; Aubourg, É.; Bailey, S.; Bizyaev, Dmitry; Bovy, Jo; Brewington, Howard; Brinkmann, J.; DeGraf, Colin; Di Matteo, Tiziana; Ebelke, Garrett; Fan, Xiaohui; Ge, Jian; Malanushenko, Elena; Malanushenko, Viktor; Mandelbaum, Rachel; Maraston, Claudia; Muna, Demitri; Oravetz, Daniel; Pan, Kaike; Pâris, Isabelle; Petitjean, Patrick; Schawinsk, Kevin; Schlegel, David J.; Schneider, Donald P.; Silverman, John D.; Simmons, Audrey; Snedden, Stephanie; Streblyanska, Alina; Suzuki, Nao; Weinberg, D. H.; York, Donald (The American Astronomical Society, 2013)
      We present a new measurement of the optical quasar luminosity function (QLF), using data from the Sloan Digital Sky Survey-III: Baryon Oscillation Spectroscopic Survey (SDSS-III: BOSS). From the SDSS-IIIData ReleaseNine, a ...
    • SDSS-IV/MaNGA: spectrophotometric calibration technique 
      Yan, Renbin; Tremonti, Christy; Bershady, Matthew A.; Law, David R.; Schlegel, David J.; Bundy, Kevin; Drory, Niv; MacDonald, Nicholas; Bizyaev, Dmitry; Blanc Mendiberri, Guillermo; Blanton, Michael R.; Cherinka, Brian; Eigenbrot, Arthur; Gunn, James E.; Harding, Paul; Hogg, David W.; Sánchez Gallego, José R.; Sánchez, Sebastian F.; Wake, David A.; Weijmans, Anne Marie; Xiao, Ting; Zhang, Kai (IOP Publishing, 2016)
      Mapping Nearby Galaxies at Apache Point Observatory (MaNGA), one of three core programs in the Sloan Digital Sky Survey-IV, is an integral-field spectroscopic survey of roughly 10,000 nearby galaxies. It employs dithered ...
    • Seabird and pinniped shape soil bacterial communities of their settlements in Cape Shirreff, Antarctica 
      Ramírez-Fernández, Lía; Trefault, Nicole; Carú, Margarita; Orlando, Julieta (Public Library of Science, 2019)
      © 2019 Ramírez-Fernández et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided ...
    • Search for associations containing young stars (SACY) I. Sample and searching method 
      Torres, C. A. O.; Quast, G. R.; Silva, L. da; Reza, R. de la; Melo, C. H. F.; Sterzik, M. (EDP SCIENCES S A, 2006-12)
      We report results from a high-resolution optical spectroscopic survey aimed to search for nearby young associations and young stars among optical counterparts of ROSAT All-Sky Survey X-ray sources in the Southern Hemisphere. ...
    • Search for giant planets in M67 III. Excess of hot Jupiters in dense open clusters 
      Brucalassi, A.; Pasquini, L.; Saglia, R.; Ruiz González, María Teresa; Bonifacio, P.; Leao, I.; Canto Martins, B.; Medeiros, J.R de; Bedin, L.; Biazzo, K.; Melo, C.; Lovis, C.; Randich, S. (EDP Sciences, 2016)
      Since 2008 we used high-precision radial velocity (RV) measurements obtained with different telescopes to detect signatures of massive planets around main-sequence and evolved stars of the open cluster (OC) M67. We aimed ...
    • Search for ionized jets toward high-mass young stellar objects: Erratum 
      Guzmán, Andrés; Garay Brignardello, Guido; Brooks, Kate J.; Voronkov, Maxim A. (The American Astronomical Society., 2014-01-20)
    • Search for Nearby Earth Analogs .III. Detection of 10 New Planets, 3 Planet Candidates, and Confirmation ... 
      Feng, Fabo; Shectman, Stephen A.; Clement, Matthew S.; Vogt, Steven S.; Tuomi, Mikko; Teske, Johanna K.; Burt, Jennifer; Crane, Jeffrey D.; Holden, Bradford; Xuesong Wang, Sharon; Thompson, Ian B.; Díaz, Matías; Butler, R. Paul (IOP Publishing, 2020)
      Earth-sized planets in the habitable zones of M dwarfs are good candidates for the study of habitability and detection of biosignatures. To search for these planets, we analyze all available radial velocity data and apply ...
    • Search for Nearby Earth Analogs. II. Detection of Five New Planets, Eight Planet Candidates, and Confirmation ... 
      Feng, Fabo; Butler, R. Paul; Shectman, Stephen A.; Crane, Jeffrey D.; Vogt, Steve; Chambers, John; Jones, Hugh R. A.; Wang, Sharon Xuesong; Teske, Johanna K.; Burt, Jenn; Díaz, Matías R.; Thompson, Ian B. (IOP Publishing, 2020)
      Zechmeister et al. surveyed 38 nearby M dwarfs from 2000 to 2007 March with VLT2 and the Ultraviolet and Visual Echelle Spectrograph (UVES) spectrometer. These data have recently been reanalyzed, yielding a significant ...
    • Search for reaction pathways with P-graphs and reaction blocks: methanation of carbon dioxide with hydrogen 
      Díaz-Alvarado, Felipe; Miranda-Pérez, Jenny; Grossmann, Ignacio (Springer International Publishing, 2018)
      The effects of carbon dioxide in the atmosphere can be reduced by closing anthropogenic cycles, and the methanation of carbon dioxide with hydrogen provides a promising option. Nevertheless, the reaction mechanism of ...
    • A search for southern ultracool dwarfs in young moving groups 
      Clarke, J. R. A.; Pinfield, D. J.; Gálvez Ortiz, M. C.; Jenkins, James Stewart; Burningham, B.; Deacon, N. R.; Jones, Hugh; Pokorny, R. S.; Barnes, J. R.; Day-Jones, A. C. (2010)
      We associate 132 low-mass ultracool dwarfs in the southern hemisphere as candidate members of five moving groups (MGs) using photometric and astrometric selection techniques. Of these objects, we present high-resolution ...
    • Searching for faint comoving companions to the alpha Centauri system in the VVV survey infrared images 
      Beamín, J. C.; Minniti, D.; Pullen, J. B.; Ivanov, V. D.; Bendek, E.; Bayo, A.; Gromadzki, M.; Kurtev, R.; Lucas, P. W.; Butler, R. P. (Oxford university press, 2017)
      The VVV survey has observed the southern disc of the Milky Way in the near-infrared, covering 240 deg(2) in the ZYJHKs filters. We search the VVV survey images in a similar to 19 deg(2) field around alpha Centauri, the ...
    • Searching for Hα emitting sources around MWC 758 SPHERE/ZIMPOL high-contrast imaging 
      Huelamo, N.; Chauvin, G.; Schmid, H. M.; Quanz, S. P.; Whelan, E.; Lillo-Box, J.; Barrado, D.; Montesinos, B.; Alcala, J. M.; Benisty, Myriam; De Gregorio Monsalvo, Itziar; Mendigutía, I.; Bouy, H.; Merín, B.; Boer, J. de; Garuf, A.; Pantin, E. (EDP. sciences S.A, 2018-05-23)
      Context. MWC 758 is a young star surrounded by a transitional disk. The disk shows an inner cavity and spiral arms that could be caused by the presence of protoplanets. Recently, a protoplanet candidate has been detected ...