Now showing items 1-20 of 566

    • 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 comparison between short GRB afterglows and kilonova AT2017gfo: Shedding light on kilonovae properties 

      Rossi, A.; Stratta, G.; Maiorano, E.; Spighi, D.; Masetti, N.; Palazzi, E.; Gardini, A.; Melandri, A.; Nicastro, L.; Pian, E.; Branchesi, M.; Dadina, M.; Testa, V.; Brocato, E.; Benetti, S.; Ciolfi, R.; Covino, S.; D'Elia, V.; Grado, A.; Izzo, L.; Perego, A.; Piranomonte, S.; Salvaterra, R.; Selsing, J.; Tomasella, L.; Yang, S.; Vergani, D.; Amati, L.; Stephen, J.B. (Oxford University Press, 2020-04)
      Multimessenger astronomy received a great boost following the discovery of kilonova (KN) AT2017gfo, the optical counterpart of the gravitational wave source GW170817 associated with the short gamma-ray burst GRB 170817A. ...
    • 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 DECam view of the diffuse dwarf galaxy Crater II – Variable stars 

      Vivas, A. Katherina; Walker, Alistair R.; Martínez-Vazquez, Clara E.; Monelli, Matteo; Bono, Giuseppe; Dorta, Antonio; Nidever, David L.; Fiorentino, Giuliana; Gallart, Carme; Andreuzzi, Gloria; Braga, Vittorio F.; Dall’Ora, Massimo; Olsen, Knut; Stetson, Peter B. (Oxford University Press, 2020-02)
      Time series observations of a single dithered field centred on the diffuse dwarf satellite galaxy Crater II were obtained with the Dark Energy Camera (DECam) at the 4m Blanco Telescope at Cerro Tololo Inter-American ...
    • A DESGW Search for the Electromagnetic Counterpart to the LIGO/Virgo Gravitational-wave Binary Neutron Star Merger Candidate S190510g 

      Garcia A., Morgan R., Herner K., Palmese A., Soares-Santos M., Annis J., Brout D., Vivas A.K., Drlica-Wagner A., Santana-Silva L., Tucker D.L., Allam S., Wiesner M., García-Bellido J., Gill M.S.S., Sako M., Kessler R., Davis T.M., Scolnic D., Casares J., Chen H., Conselice C., Cooke J., Doctor Z., Foley R.J., Horvath J., Howell D.A., Kilpatrick C.D., Lidman C., Olivares F.E., Paz-Chinchón F., Pineda J.G., Quirola-Vásquez J., Rest A., Sherman N., Abbott T.M.C., Aguena M., Avila S., Bertin E., Bhargava S., Brooks D., Burke D.L., Carnero Rosell A., Carretero J., Costanzi M., da Costa L.N., Desai S., Diehl H.T., Dietrich J.P., Doel P., Everett S., Carrasco Kind M., Flaugher B., Fosalba P., Friedel D., Frieman J., Gaztanaga E., Gruen D., Gerdes D.W., Gruendl R.A., Gschwend J., Gutierrez G., Hinton S.R., Hollowood D.L., Honscheid K., James D.J., Kuehn K., Kuropatkin N., Lahav O., Lima M., Maia M.A.G., Marshall J.L., Menanteau F., March M., Miquel R., Ogando R.L.C., Plazas A.A., Romer A.K., Roodman A., Sanchez E., Scarpine V., Schubnell M., Serrano S., Sevilla-Noarbe I., Smith M., Suchyta E., Swanson M.E.C., Tarle G., Thomas D., Varga T.N., Walker A.R., Weller J., DES Collaboration (IOP Publishing Ltd, 2020-11)
      We present the results from a search for the electromagnetic counterpart of the LIGO/Virgo event S190510g using the Dark Energy Camera (DECam). S190510g is a binary neutron star (BNS) merger candidate of moderate significance ...
    • A fast radio burst in the direction of the Virgo Cluster 

      Agarwal, Devansh; Lorimer, Duncan R; Fialkov, Anastasia; Bannister, Keith W; Shannon, Ryan M; Farah, Wael; Bhandari, Shivani; Macquart, Jean-Pierre; Flynn, Chris; Pignata, Giuliano; Tejos, Nicolas; Gregg, Benjamin; Osłowski, Stefan; Rajwade, Kaustubh; Mickaliger, Mitchell B; Stappers, Benjamin W; Li, Di; Zhu, Weiwei; Qian, Lei; Yue, Youling; Wang, Pei; Loeb, Abraham (Oxford University Press, 2019-11)
      The rate of fast radio bursts (FRBs) in the direction of nearby galaxy clusters is expected to be higher than the mean cosmological rate if intrinsically faint FRBs are numerous. In this paper, we describe a targeted search ...
    • 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 molecular electron density theory study of the participation of tetrazines in aza-Diels-Alder reactions 

      Domingo, L.R.; Ríos-Gutiérrez, M.; Pérez, P. (Royal Society of Chemistry, 2020-04)
      The reactions of eight tetrazines of increased electrophilic character with nucleophilic tetramethyl ethylene (TME) and with electrophilic tetracyanoethylene (TCE) have been studied using Molecular Electron Density Theory. ...