Now showing items 1-20 of 482

    • 1RXS J180408.9-342058: An ultra compact X-ray binary candidate with a transient jet 

      Baglio, M.C.; D’Avanzo, P.; Campana, S.; Goldoni, P.; Masetti, N.; Muñoz-Darias, T.; Patiño-Álvarez, V.; Chavushyan, V. (EDP SCIENCES, 2016-03)
      Aims. We present a detailed near-infrared/optical/UV study of the transient low-mass X-ray binary 1RXS J180408.9-342058 performed during its 2015 outburst, which is aimed at determining the nature of its companion star. ...
    • 2D sigma models and differential Poisson algebras 

      Arias, C.; Boulanger, N.; Sundell, P.; Torres-Gomez, A. (Springer, 2015-08)
      We construct a two-dimensional topological sigma model whose target space is endowed with a Poisson algebra for differential forms. The model consists of an equal number of bosonic and fermionic fields of worldsheet form ...
    • 2D-QSAR and 3D-QSAR/CoMSIA studies on a series of (R)-2-((2-(1H-Indol-2-yl)ethyl)amino)-1-phenylethan-1-ol with human β3-adrenergic activity 

      Apablaza, G.; Montoya, L.; Morales-Verdejo, C.; Mellado, M.; Cuellar, M.; Lagos, C.F.; Soto-Delgado, J.; Chung, H.; Pessoa-Mahana, C.D.; Mella, J. (MDPI, 2017-03)
      The beta(3) adrenergic receptor is raising as an important drug target for the treatment of pathologies such as diabetes, obesity, depression, and cardiac diseases among others. Several attempts to obtain selective and ...
    • 4D higher spin black holes with nonlinear scalar fluctuations 

      Iazeolla, C.; Sundell, P. (Springer Verlag, 2017-10)
      We construct an infinite-dimensional space of solutions to Vasiliev’s equations in four dimensions that are asymptotic to AdS spacetime and superpose massless scalar particle modes over static higher spin black holes. Each ...
    • A Catalog of Cool Dwarf Targets for the Transiting Exoplanet Survey Satellite 

      Muirhead, P.S.; Dressing, C.D.; Mann, A.W.; Rojas-Ayala, B.; Lépine, S.; Paegert, M.; De Lee, N.; Oelkers, R. (Institute of Physics Publishing, 2018-04)
      We present a catalog of cool dwarf targets (V - > J 2.7, T eff ≳4000 K) and their stellar properties for the upcoming Transiting Exoplanet Survey Satellite (TESS), for the purpose of determining which cool dwarfs should ...
    • A Chemical and Kinematical Analysis of the Intermediate-age Open Cluster IC 166 from APOGEE and Gaia DR2 

      Schiappacasse-Ulloa, J.; Tang, B.; Fernández-Trincado, J.G.; Zamora, O.; Geisler, D.; Frinchaboy, P.; Schultheis, M.; Dell'Agli, F.; Villanova, S.; Masseron, T.; Mészáros, S.; Souto, D.; Hasselquist, S.; Cunha, K.; Smith, V.V.; García-Hernández, D.A.; Vieira, K.; Robin, A.C.; Minniti, D.; Zasowski, G.; Moreno, E.; Pérez-Villegas, A.; Lane, R.R.; Ivans, I.I.; Pan, K.; Nitschelm, C.; Santana, F.A.; Carrera, R.; Roman-Lopes, A. (Institute of Physics Publishing, 2018-09)
      IC 166 is an intermediate-age open cluster (OC) (∼1 Gyr) that lies in the transition zone of the metallicity gradient in the outer disk. Its location, combined with our very limited knowledge of its salient features, make ...
    • A close coupling study of the bending relaxation of H2O by collision with He 

      Stoecklin, T.; Cabrera-González, L.D.; Denis-Alpizar, O.; Páez-Hernández, D. (American Institute of Physics Inc., 2021-04)
      We present a close coupling study of the bending relaxation of H2O by collision with He, taking explicitly into account the bending-rotation coupling within the rigid-bender close-coupling method. A 4D potential energy ...
    • A complementary view to the bonding pattern in the N5 +cation an electron localization function and local temperature analysis 

      Chamorro, E. (UNAB) (Sociedad Chilena de Química, 2003)
      The electron localization function (ELF), a local measure of the Pauli repulsion effect, and the local Kohn-Sham temperature analysis, which is defined within the framework of a local thermodynamics description of density ...
    • A generalized operational formula based on total electronic densities to obtain 3D pictures of the dual descriptor to reveal nucleophilic and electrophilic sites accurately on closed-shell molecules 

      Martínez-Araya, Jorge I. (Scientific Research Publishing, 2016)
      By means of the conceptual density functional theory, the so-called dual descriptor (DD) has been adapted to be used in any closed-shell molecule that presents degeneracy in its frontier molecular orbitals. The latter is ...
    • A gravitationally lensed quasar discovered in OGLE 

      Kostrzewa-Rutkowska, Z.; Kozlowski, S.; Lemon, C.; Anguita, T.; Greiner, J.; Auger, M.W.; Wyrzykowski, L.; Apostolovski, Y.; Bolmer, J.; Udalski, A.; Szymański, M.K.; Soszyński, I.; Poleski, R.; Pietrukowicz, P.; Skowron, J.; Mróz, P.; Ulaczyk, K.; Pawlak, M. (Oxford University Press, 2018-05)
      We report the discovery of a new gravitationally lensed quasar (double) from the Optical Gravitational Lensing Experiment (OGLE) identified inside the ~670deg2 area encompassing the Magellanic Clouds. The source was selected ...
    • A HUBBLE DIAGRAM FROM TYPE II SUPERNOVAE BASED SOLELY ON PHOTOMETRY: THE PHOTOMETRIC COLOR METHOD 

      T. de Jaeger, S.; González-Gaitán, J. P.; Anderson, L.; Galbany, M.; Hamuy, M. M.; Phillips, M. D.; Stritzinger, C. P.; Gutiérrez, L.; Bolt, C. R.; Burns, A.; Campillay, S.; Castellón, C.; Contreras, G.; Folatelli, W. L.; Freedman, E. Y.; Hsiao, K.; Krisciunas, W.; Krzeminski, H.; Kuncarayakti, N.; Morrell, F.; Olivares E., F.; Persson, S. E.; Suntzeff, N. (IOP PUBLISHING, 2015-12)
      We present a Hubble diagram of SNe II using corrected magnitudes derived only from photometry, with no input of spectral information. We use a data set from the Carnegie Supernovae Project I for which optical and near-infrared ...
    • A Lower Bound for the Number of Elastic Collisions 

      Burdzy, Krzysztof; Duarte, Mauricio (Springer New York LLC, 2019-12)
      We prove by example that the number of elastic collisions of n balls of equal mass and equal size ind-dimensional space can be greater than n3/27 for n≥ 3 and d≥ 2. The previously known lower bound was of order n2. © 2019, ...
    • A Lux-like quorum sensing system in the extreme acidophile Acidithiobacillus ferrooxidans 

      Rivas, M.; Seeger, M.; Holmes, D.; Jedlicki, E. (BMC, 2005)
      The genome of the acidophilic, proteobacterium Acidithiobacillus ferrooxidans, contains linked but divergently oriented genes, termed afeI and afeR, whose predicted protein products are significantly similar to the LuxI ...
    • A molecular electron density theory study of the [3 + 2] cycloaddition reaction of nitrones with strained allenes 

      Domingo, L.R.; Ríos-Gutiérrez, M.; Pérez, P. (Royal Society of Chemistry, 2017)
      The [3 + 2] cycloaddition (32CA) reaction of C-phenyl-N-tert-butylnitrone with 1,2-cyclohexadiene (CHDE), a strained allene, has been studied within Molecular Electron Density Theory (MEDT) at the DFT B3LYP/6-311G(d,p) ...
    • A molecular electron density theory study of the competitiveness of polar diels–alder and polar alder-ene reactions 

      Domingo, L.R.; Ríos-Gutiérrez, M.; Pérez, P. (MDPI AG, 2018)
      The competitiveness of the BF3 Lewis acid (LA) catalyzed polar Diels–Alder (P-DA) and polar Alder-ene (P-AE) reactions of 2-methyl-1,3-butadiene, a diene possessing an allylic hydrogen, with formaldehyde has been studied ...
    • A new galactic bulge globular cluster from the vvv survey 

      Chijani Saballa, Matías (Universidad Andrés Bello, 2019)
      El VVV es uno de los surveys contemporáneos que opera en el infrarrojo cercano, observa la MW y sectores aledaños en 5 bandas distintas. Uno de sus objetivos es completar el catálogo de cúmulos globulares de distinta ...
    • A new near-IR window of low extinction in the Galactic plane 

      Minniti, D.; Saito, R.K.; Gonzalez, O.A.; Alonso-García, J.; Rejkuba, M.; Barbá, R.; Irwin, M.; Kammers, R.; Lucas, P.W.; Majaess, D.; Valenti, E. (EDP Sciences, 2018-08)
      Aims. The windows of low extinction in the Milky Way (MW) plane are rare but important because they enable us to place structural constraints on the opposite side of the Galaxy, which has hither to been done rarely. Methods. ...
    • A Note on T-dualities in the Pure Spinor Heterotic String 

      Chandía, Osvaldo (2013-10-22)
      In this note we study the preservation of the classical pure spinor BRST constraints under super T-duality transformations. We also determine the invariance of the one-loop conformal invariance and of the local gauge and ...
    • A note on the classical BRST symmetry of the pure spinor string in a curved background 

      Chandia, O. (Scuola Internazionale Superiore di Studi Avanzati (SISSA) [Associate Organisation] Springer Verlag [Commercial Publisher], 2006-07)
      The classical pure spinor version of the heterotic superstring in a supergravity and super Yang-Mills background is considered. We obtain the BRST transformations of the world-sheet fields. They are consistent with the ...
    • A note on the N = 2 super- W3 holographic dictionary 

      Castro A.; Faraggi A.; Osorio I. (Springer Science and Business Media Deutschland GmbH, 2020-12)
      This is a long-overdue companion paper to [1]. We study the relation between sl(3|2) Chern-Simons supergravity on AdS3 and two-dimensional CFT’s with N = 2 super-W3 symmetry. Specifically, we carry out a complete analysis ...