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Browsing DFA - Artículos by Author "Miguel Agustino, Enrique de"
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Accretion-disc precession in UX Ursae Majoris
Miguel Agustino, Enrique de
; Patterson, Joseph (Oxford University Press, 2016)
We report the results of a long campaign of time-series photome try on the nova-like variable UX Ursae Majoris during 2015. It spanned 150 nights, with ~ 1800 h ours of coverage on 121 separate nights. ... -
An accurate density functional theory for the vapor-liquid interface of associating chain molecules based on the statistical associating fluid theory for potentials of variable range
Gloor, Guy J.; Jackson, George; Jiménez Blas, Felipe; Martín del Río, Elvira; Miguel Agustino, Enrique de (American Institute of Physics, 2004)
A Helmholtz free energydensity functional is developed to describe the vapor-liquid interface of associating chain molecules. The functional is based on the statistical associating fluid theory with attractive potentials ... -
BK Lyncis: the oldest old nova?... and a Bellwether for cataclysmic variable evolution
Patterson, Joseph; Uthas, Helena; Kemp, Jonathan; Miguel Agustino, Enrique de; Krajci, Thomas; Foote, Jerry; Hambsch, Franz-Josef; Campbell, Tut; Roberts, George; Cejudo, David; Dvorak, Shawn; Vanmunster, Tonny; Koff, Robert; Skillman, David; Harvey, David; Martin, Brian; Rock, John; Boyd, David; Oksanen, Arto; Morelle, Etienne; Ulowetz, Joseph; Kroes, Anthony; Sabo, Richard; Jensen, Lasse (Oxford University Press, 2013)
We summarize the results of a 20-year campaign to study the light curves of BK Lyncis, a nova-like star strangely located below the 2-3 hour orbital period gap in the family of cataclysmic variables. Two apparent ... -
Communications : evidence for the role of fluctuations in the thermodynamics of nanoscale drops and the implications in computations of the surface tension
Sampayo, José G.; Malijevský, Alexandr; Müller, Erich A.; Miguel Agustino, Enrique de; Jackson, George (American Institute of Physics, 2010)
Test-area deformations are used to analyze vapor-liquid interfaces of Lennard-Jones particles by molecular dynamics simulation. For planar vapor-liquid interfaces the change in free energy is captured by the average of ... -
Computer simulation study of the global phase behavior of linear rigid Lennard-Jones chain molecules : comparison with flexible models
Galindo, A.; Vega, C.; Sanz, E.; MacDowell, Luis G.; Miguel Agustino, Enrique de; Jiménez Blas, Felipe (American Institute of Physics, 2004)
The global phase behavior ~i.e., vapor-liquid and fluid-solid equilibria! of rigid linear Lennard-Jones ~LJ! chain molecules is studied. The phase diagrams for three-center and five-center rigid model molecules are ... -
Critical properties of molecular fluids from the virial series
MacDowell, Luis G.; Menduiña, C.; Vega, C.; Miguel Agustino, Enrique de (American Institute of Physics, 2003)
We present results for the fourth virial coefficient of quadrupolar Lennard-Jones diatomics for several quadrupole moments and elongations. The coefficients are employed to predict the critical properties from two different ... -
Determination of the melting point of hard spheres from direct coexistence simulation methods
Noya, Eva G.; Vega, C.; Miguel Agustino, Enrique de (American Institute of Physics, 2008)
We consider the computation of the coexistence pressure of the liquid-solid transition of a system of hard spheres from direct simulation of the inhomogeneous system formed from liquid and solid phases separated by an ... -
From outburst to quiescence: spectroscopic evolution of V1838 Aql imbedded in a bow-shock nebula
Hernández Santisteban, J. V.; Zharikov, S.; Neustroev, V.; Miguel Agustino, Enrique de (Royal Astronomical Society, 2019-04)
We analyse new optical spectroscopic, direct-image and X-ray observations of the recently discovered a high-proper motion cataclysmic variable V1838 Aql. The data were obtained during its 2013 superoutburst and its ... -
The global phase diagram of the Gay–Berne model
Miguel Agustino, Enrique de; Vega, C. (American Institute of Physics, 2002)
The phase diagram of the Gay–Berne model with anisotropy parameters k53, k 855 has been evaluated by means of computer simulations. For a number of temperatures, NPT simulations were performed for the solid phase leading ... -
The helium-rich cataclysmic variable SBSS 1108+574
Carter, P. J.; Steeghs, D.; Miguel Agustino, Enrique de; Goff, W.; Koff, Robert; Krajci, Thomas; Marsh, T. R.; Gänsicke, B. T.; Breedt, E.; Groot, P. J.; Nelemans, G.; Roelofs, G. H. A.; Rau, A.; Koester, D.; Kupfer, T. (Oxford University Press, 2013)
We present time-resolved spectroscopy and photometry of the dwarf nova SBSS 1108+574, obtained during the 2012 outburst. Its quiescent spectrum is unusually rich in helium, showing broad, double-peaked emission lines from ... -
IX Draconis – a curious ER UMa-type dwarf nova
Otulakowska-Hypka, M.; Olech, A.; Miguel Agustino, Enrique de; Rutkowski, A.; Koff, Robert; Ba֒kowska, K. (Oxford University Press, 2013)
We report results of an extensive worldwide observing campaign devoted to a very active dwarf nova star – IX Draconis. We investigated photometric behaviour of the system to derive its basic outburst properties and understand ... -
The nature of the calculation of the pressure in molecular simulations of continuous models from volume perturbations
Miguel Agustino, Enrique de; Jackson, George (American Institute of Physics, 2006)
We consider some fundamental aspects of the calculation of the pressure from simulations by performing volume perturbations. The method, initially proposed for hard-core potentials by Eppenga and Frenkel Mol. Phys. 52, ... -
Optical photometric and spectral study of the new FU Orionis object V2493 Cygni (HBC 722)
Semkov, E. H.; Peneva, S. P.; Munari, U.; Tsvetkov, M. K.; Jurdana-Šepić, R.; Miguel Agustino, Enrique de; Schwartz, R. D.; Dimitrov, D. P.; Kjurkchieva, D. P.; Radeva, V. S. (European Southern Observatory, 2012)
Aims. We present new results from optical photometric and spectroscopic observations of the eruptive pre-main sequence star V2493 Cyg (HBC 722). The object has continued to undergo significant brightness variations over ... -
OT J075418.7+381225 and OT J230425.8+062546: Promising candidates for the period bouncer
Nakata, Chikako; Miguel Agustino, Enrique de; Muyllaert, Eddy (Astronomical Society of Japan, 2014)
We report on photometric observations of two dwarf novae, OT J075418.7+381225 and OT J230425.8+062546, which showed superoutbursts in 2013 (OT J075418) and in 2011 (OT J230425). Their mean periods of the superhump were ... -
The phase diagram of the two center Lennard-Jones model as obtained from computer simulation and Wertheim’s thermodynamic perturbation theory
Vega, C.; Miguel Agustino, Enrique de; Jiménez Blas, Felipe; Galindo, A. (American Institute of Physics, 2003)
The global phase diagram (i.e., vapor–liquid and fluid–solid equilibrium) of two-center Lennard-Jones (2CLJ) model molecules of bond length L=σ has been determined by computer simulation. The vapor–liquid equilibrium ... -
SDSS J162520.29+120308.7 – a new SU Ursae Majoris star in the period gap
Olech, A.; Miguel Agustino, Enrique de; Otulakowska-Hypka, M.; Thorstensen, J. R.; Rutkowski, A.; Novak, R.; Masi, G.; Richmond, M.; Staels, B.; Lowther, S.; Stein, W.; Ak, T.; Boyd, David; Koff, Robert; Patterson, Joseph; Eker, Z. (European Southern Observatory, 2011)
We report results of an extensive world-wide observing campaign devoted to the recently discovered dwarf nova SDSS J162520.29+120308.7 (SDSS J1625). The data were obtained during the July 2010 eruption of the star and in ... -
Superhumps and spin-period variations in the intermediate polar RX J2133.7+5107
Miguel Agustino, Enrique de; Patterson, Joseph; Myers, J. (Oxford University Press, 2017)
We report the results of long-term time series photometry on RX J2133.7+5107, an intermediate polar distinguished by its long orbital period (7.14 h) and rapid rotation (571 s) of its white dwarf. The light curves show the ... -
Surface tension of the most popular models of water by using the test-area simulation method
Vega, C.; Miguel Agustino, Enrique de (American Institute of Physics, 2007)
We consider the calculation of the surface tension from simulations of several models of water, such as the traditional TIP3P, SPC, SPC/E, and TIP4P models, and the new generation of TIP4P-like models including the ... -
Test-area simulation method for the direct determination of the interfacial tension of systems with continuous or discontinuous potentials
Gloor, Guy J.; George, Jackson; Jiménez Blas, Felipe; Miguel Agustino, Enrique de (American Institute of Physics, 2005)
A novel test-area TA technique for the direct simulation of the interfacial tension of systems interacting through arbitrary intermolecular potentials is presented in this paper. The most commonly used method invokes ... -
Third virial coefficients and critical properties of quadrupolar two center Lennard-Jones models
MacDowell, Luis G.; Menduiña, C.; Vega, C.; Miguel Agustino, Enrique de (Royal Society of Chemistry, 2003)
We report numerical results for the third virial coefficient of two center Lennard-Jones quadrupolar molecules. Calculations are performed for 35 models with different elongations and quadrupoles over a temperature range ...
