Thesis Collection
Last Deposit
Browsing by Author "Miguel Agustino, Enrique de"
Now showing items 1-20 of 39
-
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 Rio, Elvira Fátima; 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 ... -
An examination of the vapour-liquid interface of associating fluids using a SAFT-DFT approach
Jiménez Blas, Felipe; Martín del Rio, Elvira Fátima; Miguel Agustino, Enrique de; Jackson, George (Taylor and Francis, 2001)
With a realistic description of the free energy of bulk fluids, it is now possible to make accurate predictions at the molecular level for the phase behaviour of systems as complex as aqueous solutions of amphiphiles, ... -
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 of the phase diagram of Gaussian overlap models
(Universidad de Huelva, 2009)La meta principal de este trabajo es determinar el diagrama de fases de modelos de solapamiento gausiano por simulación. Esto implica cálculo de energía libre de cada fase. Se han desarrollado programas de simulación ... -
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 ... -
HT Cas - eclipsing dwarf nova during its superoutburst in 2010
Bąkowska, K.; Olech, A.; Rutkowski, A.; Koff, Robert; Miguel Agustino, Enrique de; Otulakowska-Hypka, M. (Cornell University, 2013)
We present results of a world-wide observing campaign of the eclips- ing dwarf nova - HT Cas during its superoutburst in November 2010. Using collected data we were able to conduct analysis of the light curves and ... -
IGR J19552+0044: A new asynchronous short period polar Filling the gap between intermediate and ordinary polars
Tovmassian, G.; González Buitrago, D.; Thorstensen, J. R.; Miguel Agustino, Enrique de (EDP Sciences, 2017-08)
Context. Based on XMM-Newton X-ray observations IGR J19552+0044 appears to be either a pre-polar or an asynchronous polar. Aims. We conducted follow-up optical observations to identify the sources and periods of variability ... -
IM Normae: The Death Spiral of a Cataclysmic Variable?
Patterson, Joseph; Miguel Agustino, Enrique de; Knigge, Christian (American Astronomical Society, 2022-01)
We present a study of the orbital light curves of the recurrent nova IM Normae since its 2002 outburst. The broad “eclipses” recur with a 2.46 hr period, which increases on a timescale of 1.28(16) × 106 yr. Under the ... -
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 ... -
Molecular simulation of model liquid crystals in a strong aligning field
Miguel Agustino, Enrique de; Jiménez Blas, Felipe; Martín del Rio, Elvira Fátima (Taylor and Francis, 2006)
We report a computer simulation study of systems of perfectly aligned molecules interacting through the Gay–Berne (GB) potential model for two different values of the molecular anisotropy parameter k, namely 3 and 4.4. The ... -
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 ...
