Browsing by Title Artículos de revistas

Now showing items 3050-3069 of 7543

    • H II regions and high-mass starless clump candidates: II. Fragmentation and induced star formation at similar ... 
      Zhang, S.; Zavagno, A.; López Sepulcre, A.; Liu, H.; Louvet, Fabien; Figueira, M.; Russeil, D.; Wu, Y.; Yuan, J.; Pillai, T. G. S (EDP Sciences, 2021)
      Context. The ionization feedback from H II regions modifies the properties of high-mass starless clumps (HMSCs, of several hundred to a few thousand solar masses with a typical size of 0.1–1 pc), such as dust temperature ...
    • h- and p-adaptivity driven by recovery and residual-based error estimators for PHT-splines applied to ... 
      Videla, Javier; Anitescu, Cosmin; Khajah, Tahsin; Bordas, Stéphane P.A.; Atroshchenko, Elena (Elsevier Ltd, 2019)
      © 2019 Elsevier Ltd In this work, we demonstrate the application of PHT-splines for time-harmonic acoustic problems, modeled by the Helmholtz equation. Solutions of the Helmholtz equation have two features: global oscillations ...
    • H-2 molecular gas absorption-selected systems trace CO molecular gas-rich galaxy overdensities 
      Klitsch, Anne; Peroux, Celine; Zwaan, Martin A.; De Cia, Annalisa; Ledoux, Cedric; López Morales, Sebastián Víctor Claudio (Oxford, 2021)
      Absorption-selected galaxies offer an effective way to study low-mass galaxies at high redshift. However, the physical properties of the underlying galaxy population remain uncertain. In particular, the multiphase ...
    • An H2Co 6 cm maser pinpointing a possible circumstellar torus in IRAS 18566+0408 
      Araya, E.; Hofner, P.; Sewixo, M.; Goss, W. M.; Linz, H.; Kurtz, S.; Olmi, L.; Churchwell, E.; Rodríguez, L. F.; Garay Brignardello, Guido (UNIV CHICAGO PRESS, 2007-11-10)
      We report observations of 6 cm, 3.6 cm, 1.3 cm, and 7 mm radio continuum, conducted with the Very Large Array, toward IRAS 18566+0408, one of the few sources known to harbor H(2)CO6 cm maser emission. Our observations ...
    • H2O southern galactic plane survey (HOPS): Paper III – properties of dense molecular gas across the inner milky way 
      Longmore, S. N.; Walsh, A. J.; Purcell, C. R.; Lo, N. (Oxford University Pres, 2017)
      The H2O Southern Galactic Plane Survey (HOPS) has mapped 100 deg(2) of the Galactic plane for water masers and thermal molecular line emission using the 22 m Mopra telescope. We describe the automated spectral-line fitting ...
    • Hadamard functions of inverse M-matricese 
      Dellacherie Lefebvre, Claude; Martínez Aguilera, Servet; San Martín Aristegui, Jaime (2009)
      We prove that the class of generalized ultrametric matrices (GUM) is the largest class of bipotential matrices stable under Hadamard increasing functions. We also show that any power α ≥ 1, in the sense of Hadamard ...
    • Halogen bonding in 1,2-dibromo-4,5-dimethoxybenzene and 1,2-diiodo4,5-dimethoxybenzene 
      Cukiernik, Fabio D.; Zelcer, Andrés; Garland, María Teresa; Baggio, Ricardo (BLACKWELL, 2008-11)
      An interesting case of 'halogen-bonding-promoted' crystal structure architecture is presented. The two title compounds, C8H8Br2O2 and C8H8I2O2, have almost indistinguishable molecular structures but very different spatial ...
    • Halogens, trace element concentrations, and Sr-Nd isotopes in apatite from iron oxide-apatite (IOA) deposits ... 
      Palma, Gisella; Barra, Fernando; Reich Morales, Martín; Valencia, Victor; Simon, Adam C.; Vervoort, Jeff; Leisen, Mathieu; Romero, Rurik (Elsevier Ltd, 2019)
      © 2018 Elsevier LtdThe ratio of the halogens F and Cl in apatite is highly sensitive to changes in the composition of an evolving silicate melt or aqueous fluid. For this reason apatite chemistry is widely used as a monitor ...
    • Haptic-Based Neurorehabilitation in Poststroke Patients: A Feasibility Prospective Multicentre Trial for ... 
      Turolla, Andrea; Daud Albasini, Omar; Oboe, Roberto; Agostini, Michela; Tonin, Paolo; Paolucci, Stefano; Giorgio, Sandrini; Venneri, Annalena; Piron, Lamberto (Hindawi Publishing Corporation, 2013)
      Background. Haptic robots allow the exploitation of known motor learning mechanisms, representing a valuable option for motor treatment after stroke. The aim of this feasibility multicentre study was to test the clinical ...
    • Harmonic solutions for polygonal hydraulic jumps in thin fluid films 
      Rojas, N.; Tirapegui Zurbano, Enrique (Cambridge Univ Press, 2015)
      This article contains numerical and theoretical results on the circular and polygonal hydraulic jumps in the framework of inertial lubrication theory. The free surface and velocity fields are computed along with ...
    • The HARPS search for southern extra-solar planets XXXVI. Planetary systems and stellar activity of the M ... 
      Astudillo Defru, N.; Bonfils, X.; Delfosse, X.; Ségransan, D.; Forveille, T.; Bouchy, F.; Gillon, M.; Lovis, C.; Mayor, M.; Neves, V.; Pepe, F.; Perrier, C.; Queloz, D.; Rojo Rubke, Patricio; Santos, N. C.; Udry, S. (2015)
      Context. Planetary companions of a fixed mass induce reflex motions with a larger amplitude around lower-mass stars, which adds to making M dwarfs excellent targets for extra-solar planet searches. The most recent ...
    • A HARPS view on K2-3 
      Almenara, J. M.; Astudillo Defru, N.; Bonfils, X.; Forveille, T.; Santerne, A.; Albrecht, S.; Barros, S. C. C.; Bouchy, F.; Delfosse, X.; Demangeon, O.; Diaz, R. F.; Hébrard, G.; Mayor, M.; Neves, V.; Rojo Rubke, Patricio; Santos, N. C.; Wünsche, A. (EDP Sciences, 2015)
      K2 space observations recently found that three super-Earths transit the nearby M dwarf K2-3. The apparent brightness and the small physical radius of their host star rank these planets amongst the most favourable for ...
    • HARVESTING ECONOMIC MODELS AND CATCH-TO-BIOMASS DEPENDENCE: THE CASE OF SMALL PELAGIC FISH 
      Gajardo, Pedro; Peña-Torres, Julio; Ramírez Cabrera, Héctor (WILEY-BLACKWELL, 2011-05)
      P>In the case of small pelagic fish, it seems reasonable to consider harvest functions depending nonlinearly on fishing effort and fish stock. Indeed, empirical evidence about these fish species suggests that marginal catch ...
    • HATS-43b, HATS-44b, HATS-45b, and HATS-46b: four short period transiting giant planets in the Neptune Jupiter ... 
      Brahm, R.; Hartman, J. D.; Jordan, A.; Díaz, M. (IOP Publishing Ltd, 2018)
      We report the discovery of four short-period extrasolar planets transiting moderately bright stars from photometric measurements of the HATSouth network coupled to additional spectroscopic and photometric follow-up ...
    • HATSouth: A Global Network of Fully Automated Identical Wide-Field Telescopes 
      Bakos, G. Á.; Csubry, Z.; Penev, K.; Bayliss, D.; Jordán, A.; Afonso, C.; Hartman, J. D.; Henning, Thomas; Kovács, G.; Noyes, R. W.; Béky, B.; Suc, V.; Csák, B.; Rabus, M.; Lázár, J.; Papp, I.; Sári, P.; Conroy, P.; Zhou, G.; Sackett, P. D.; Schmidt, B.; Mancini, L.; Sasselov, D. D.; Ueltzhoeffer, K. (UNIV CHICAGO PRESS, 2013-02)
      HATSouth is the world's first network of automated and homogeneous telescopes that is capable of year-round 24 hr monitoring of positions over an entire hemisphere of the sky. The primary scientific goal of the network is ...
    • Hausdorff dimension of rupture sets and removable singularities 
      Dávila, Juan; Ponce, Augusto C. (ELSEVIER, 2008-01)
      Given alpha > 0 and a domain Omega C R-N, we show that for every finite energy solution it u >= 0 of the equation -Delta u + u(-alpha) = f (x) 2 in Omega, the set [u = 0] has Hausdorff dimension at most N - 2 + 2/alpha+1. ...
    • HD 169142 in the eyes of ZIMPOL/SPHERE 
      Bertrang, G. H. M.; Avenhaus, H.; Casassus Montero, Simón; Montesinos, M.; Kirchschlager, F.; Pérez, S.; Cieza, L.; Wolf, S. (Oxford University Press, 2018)
      We present new data of the protoplanetary disc surrounding the Herbig Ae/Be star HD 169142 obtained in the very broad-band (VBB) with the Zurich imaging polarimeter (ZIMPOL), a sub-system of the Spectro-Polarimetric ...
    • HD 213885b: a transiting 1-d-period super-Earth with an Earth-like composition around a bright (V=7.9) star ... 
      Espinoza, Néstor; Brahm, Rafael; Henning, Thomas; Jordan, Andrés; Dorn, Caroline; Rojas, Felipe; Sarkis, Paula; Kossakowski, Diana; Schlecker, Martin; Díaz, Matías R.; Jenkins, James S.; Aguilera Gomez, Claudia; Jenkins, Jon M.; Twicken, Joseph D.; Collins, Karen A.; Lissauer, Jack; Armstrong, David J.; Adibekyan, Vardan; Barrado, David; Barros, Susana C. C.; Battley, Matthew; Bayliss, Daniel; Bouchy, François; Bryant, Edward M.; Cooke, Benjamin F.; Demangeon, Olivier D. S.; Dumusque, Xavier; Figueira, Pedro; Giles, Helen; Lillo Box, Jorge; Lovis, Christophe; Nielsen, Louise D.; Pepe, Francesco; Pollacco, Don; Santos, Nuno C.; Sousa, Sergio G.; Udry, Stéphane; Wheatley, Peter J.; Turner, Oliver; Marmier, Maxime; Ségransan, Damien; Ricker, George; Latham, David; Seager, Sara; Winn, Joshua N.; Kielkopf, John F.; Hart, Rhodes; Wingham, Geof; Jensen, Eric L. N.; Helminiak, Krzysztof G.; Tokovinin, A.; Briceño, C.; Ziegler, Carl; Law, Nicholas M.; Mann, Andrew W.; Daylan, Tansu; Doty, John P.; Guerrero, Natalia; Boyd, Patricia; Crossfield, Ian; Morris, Robert L.; Henze, Christopher E.; Chacon, Aaron Dean (Oxford Unv Press, 2020)
      We report the discovery of the 1.008-d, ultrashort period (USP) super-EarthHD213885b (TOI141b) orbiting the bright (V= 7.9) star HD 213885 (TOI-141, TIC 403224672), detected using photometry from the recently launched TESS ...
    • he collimated jet source in IRAS 16547-4247: Time variation, possible precession, and upper limits to the ... 
      Rodríguez, L. F.; Moran, J. M.; Franco Hernández, Ramiro; Garay Brignardello, Guido; Brooks, Kate J.; Mardones Pérez, Diego (IOP PUBLISHING LTD, 2008-06)
      The triple radio source detected in association with the luminous infrared source IRAS 16547-4247 has previously been studied with high angular resolution and high sensitivity with the Very Large Array at 3.6 cm wavelength. ...
    • He, Ar, N and C isotope compositions in Tatun Volcanic Group (TVG), Taiwan: Evidence for an important ... 
      Roulleau, Emilie; Sano, Yuji; Takahata, Naoto; Yang, Frank T.; Takahashi, Hiroshi A. (Elsevier, 2015)
      The Tatun Volcanic Group (TVG), Northeastern Taiwan, is considered to be the extension of the Ryukyu arc, and belongs to the post-collisional collapse Okinawa Trough. Strong hydrothermal activity is concentrated along the ...