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Browsing by Author "Miguel Agustino, Enrique de"
Now showing items 21-39 of 39
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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 ... -
Stability of smectic phases in the Gay–Berne model
Miguel Agustino, Enrique de; Martín del Rio, Elvira Fátima; Jiménez Blas, Felipe (AIP Publishing, 2004)
We present a detailed computer simulation study of the phase behavior of the Gay–Berne liquid crystal model with molecular anisotropy parameter k=4.4. According to previous investigations: (i) this model exhibits isotropic ... -
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 ... -
The 2011 February superoutburst of the dwarf nova SDSS J112003.40+663632.4
Shears, Jeremy; Brady, Steve; Krajci, Thomas; Miguel Agustino, Enrique de; Potter, Mike; Sabo, Richard; Stein, William (Cornell University, 2011)
We report unfiltered photometry of SDSS J112003.40+663632.4 during the 2011 February outburst which revealed the presence of superhumps with peak-to-peak amplitude of up to 0.22 magnitudes showing this to be an SU UMa ... -
The asynchronous polar V1432 Aquilae and its path back to synchronism
Boyd, David; Miguel Agustino, Enrique de; Walker, Stan (Cornell University, 2014)
V1432 Aquilae is the only known eclipsing asynchronous polar. In this respect it is unique and therefore merits our attention. We report the results of a 15-year campaign by the globally distributed Center for ... -
The first confirmed superoutburst of the dwarf nova GALEX J215818.5+241924
Shears, Jeremy; Koff, Robert; Masi, G.; Miguel Agustino, Enrique de; Miller, Ian; Roberts, George; Sabo, Richard; Stein, William; Ulowetz, Joseph (Cornell University, 2013)
In 2011 October an optical transient was reported in Pegasus as a possible nova. The object had an ultraviolet counterpart, GALEX J215818.5+241924. In this paper we present follow-up photometry of the object which revealed ... -
The first confirmed superoutburst of the SU UMa type dwarf nova SDSS J083931.35+282824.0
Shears, Jeremy; Miguel Agustino, Enrique de; Roberts, George; Collins, Donald F.; Myers, Gordon; Campbell, Tut (Cornell University, 2010)
We report unfiltered CCD photometry of the first confirmed superoutburst of the recently discovered dwarf nova, SDSS J083931.35+282824.0 in April 2010. From a quiescence magnitude of ~19.8 it rose to 14.0, an outburst ... -
The orbital and superhump periods of the dwarf nova SDSS J093249.57+472523.0
Shears, Jeremy; Brady, Steve; Dvorak, Shawn; Miguel Agustino, Enrique de; Morelle, Etienne; Oksanen, Arto; Sabo, Richard (Cornell University, 2012)
We report unfiltered CCD photometry of the eclipsing dwarf nova SDSS J093249.57+472523.0 obtained during its first confirmed outburst in 2011 March. The outburst amplitude was at least 3.0 magnitudes above mean quiescence ... -
The orbital period of the eclipsing dwarf nova SDSS J081610.84+453010.2
Shears, Jeremy; Brady, Steve; Campbell, Tut; Henden, Arne; Miguel Agustino, Enrique de; Morelle, Etienne; Roberts, George; Sabo, Richard; Miller, Ian (Cornell University, 2011)
We present time resolved photometry of the cataclysmic variable SDSS J081610.84+453010.2 and have established for the first time that it is an eclipsing dwarf nova. We observed an outburst of the system which lasted about ... -
The Periodic Signals of Nova V1674 Herculis (2021)
Patterson, Joseph; Miguel Agustino, Enrique de; Wood, Matt A. (American Astronomical Society, 2022)
We present time-series photometry during the early decline phase of the extremely fast nova V1674 Herculis. The 2021 light curve showed periodic signals at 0.152921(3) days and 501.486(5) s, which we interpret as respectively ... -
The Rise and Fall of the King: The Correlation between FO Aquarii's Low States and the White Dwarf's Spin-down
Littlefield, Colin; Miguel Agustino, Enrique de; Pellett, Emil (American Astronomical Society, 2020-06)
The intermediate polar FO Aquarii (FO Aqr) experienced its first reported low-accretion states in 2016, 2017, and 2018, and, using newly available photographic plates, we identify prediscovery low states in 1965, 1966, and ... -
The Spin-period History of Intermediate Polars
Patterson, Joseph; Miguel Agustino, Enrique de; Kemp, Jonathan; Dvorak, Shawn (American Astronomical Society, 2020-07)
We report the detailed history of spin-period changes in five intermediate polars (DQ Herculis, AO Piscium, FO Aquarii, V1223 Sagittarii, and BG Canis Minoris) during the 30–60 yr since their original discovery. Most ... -
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 ... -
Total eclipse of the heart: the AM CVn Gaia14aae/ASSASN-14cn
Campbell, H. C.; Miguel Agustino, Enrique de (Oxford University Press, 2015)
We report the discovery and characterization of a deeply eclipsingAMCVn-system, Gaia14aae (=ASSASN-14cn). Gaia14aae was identified independently by the All-Sky Automated Survey for Supernovae (ASAS-SN; Shappee et al.) ... -
Vapor-liquid interfacial properties of fully flexible Lennard-Jones chains
Jiménez Blas, Felipe; MacDowell, Luis G.; Miguel Agustino, Enrique de; Jackson, George (AIP Publishing, 2008)
We consider the computation of the interfacial properties of molecular chains from direct simulation of the vapor-liquid interface. The molecules are modeled as fully flexible chains formed from tangentially bonded ... -
A Very Bright, Very Hot, and Very Long Flaring Event from the M Dwarf Binary System DG CVn
Osten, Rachel A.; Miguel Agustino, Enrique de; Gehrels, Neil (IOP Publishing, 2016)
On 2014 April 23, the Swift satellite responded to a hard X-ray transient detected by its Burst Alert Telescope, which turned out to be a stellar flare from a nearby, young M dwarf binary DG CVn. We utilize observations ...
