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Showing 1 to 20 of 41 for “"OGLE"”.
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Post-common-envelope binary central stars of Planetary Nebulae in the OGLE-IV survey
… longstanding problem. Using photometry from the OGLEIV survey, we present the newly identified close binary central stars of Planetary Nebulae (CSPNe), six in total. Of the six PNe with close binary CSPNe, one looks spherical which presents a very interesting argument in terms of our …
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Transit timing with fast cameras on large telescopes
… were measured for seven transiting exoplanets: OGLETR- 56b (11 transits), OGLE-TR-132b (7), OGLE-TR-111b (6), OGLE-TR-113b (6), CoRoT-2b (3), OGLE-TR-10b (3), and XO-2b (2). Ground-based observations of 38 transits were made using three new frame-transfer instruments: POETS and MagICe2v on the …
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Crop loss in two spring oat cultivars due to Puccinia coronata f.sp. avenae and barley yellow dwarf virus, and a spring oat plant growth model
… studies were done on two spring oat cultivars, Ogle(IL) and Noble(IN) in 1989 and 1990, to estimate crop loss due to Puccinia coronata f.sp. avenae (crown rust), in the presence or absence of barley yellow dwarf virus (BYDV-PAV-IL). Several levels of crown rust (CR) were established in all …
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Peel, Fondle, Ogle: An exhibition and Unfixed parameters: A creative arts praxis investigation of the in-between conditions of the corporeal body: An exegesis
… exhibition of my candidature, Peel, Fondle, Ogle in February 2015 explored the potential for the gaze of both the viewer and the viewed (Lacan, 1979) to physically and emotionally generate a response to the in-between condition of the body. Experimentation of gaze within this research extends …
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The role of binary stars in searches for extrasolar planets by microlensing and astrometry
… discovered outside of the Solar System so far, OGLE-2005-BLG-390Lb, having only 5.5 Earth masses. This was the first observed microlensing event in which the degeneracy between a planetary binary-lens and an extreme flux ratio binary-source model has been successfully broken. For events …
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Gravitational microlensing and the search for extrasolar planets
… Sutherland, Canopus and Perth observatories, OGLE, Danish Telescope, LaSilla. For the observed microlensing target OGLE-2011-BLG-265, analysis of the data using the program supplied by Keith Horne, using different minimization schemes and algorithms, I found best fit model to be a binary lens …
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Long-term properties of X-ray binaries in the magellanic clouds
… ~ 16 yr optical light curves from the MACHO and OGLE databases, and combine these with archival XMM-Newton X-ray observations to study the long-term properties of Be/X-ray binaries and Supersoft X-ray Sources in the Magellanic Clouds.
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Capturing transients: an application of biostatistics to astronomy
… analysis using real data from the OGLE-IV XROM survey. The data samples consisted of observations that were grouped into epochs. The large variation in quiescent magnitude of the population creates heterogeneity in the capture probability of sources which requires non-standard …
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The structure of the Large Magellanic Cloud
… Optical Gravitational Lensing Experiment III (OGLE III). RR Lyrae stars are amongst the oldest objects in the universe and they have a range in element (metal) abundances. Measuring the distribution of metallicities of RR Lyrae stars in a galaxy gives one clues to the origin of galaxies. It is …
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The structure of the large magellanic cloud
… Optical Gravitational Lensing Experiment III (OGLE III). RR Lyrae stars are amongst the oldest objects in the universe and they have a range in element (metal) abundances. Measuring the distribution of metallicities of RR Lyrae stars in a galaxy gives one clues to the origin of galaxies. It is …
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Optical and X-ray studies of Be/X-ray binaries in the Small Magellanic Cloud
… their outbursting nature by combining the OGLE optical light curves with the RXTE light curves. This has culminated in an orbital solution for SXP18.3 as well as measured orbital periods for SXP2.37, SXP172 and SXP202B. Through detections of quasi-periodic variations in the optical light …
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The red clump stars as a distance indicator : review and application
… number of stars simultaneously observed by the OGLE microlensing project which yields well-defined red clump structures in their colour magnitude diagrams. We have used data obtained at Sutherland in July 1997, in collaboration with the PLANET microlensing project. It was hoped that the …
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Mass and Distance Estimation Simulations for the Nancy Grace Roman Space Telescope Using PyLIMASS and a Case Study on Intellectual Property Frameworks in Space Collaborations
… that for the well-characterized event OGLE-2013-BLG-0132Lb, the lens mass can be constrained to within 18.7% uncertainty, validating the feasibility of Roman’s requirement on a case-study basis. This thesis also addresses the legal and policy foundations needed to ensure global access …
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Applications of Galactic Microlensing
… the PLANET microlensing campaign. For the event OGLE-2002-BLG-069 the 2nd ever lens mass measurement has been achieved, leading to a scenario, where a G5III Bulge giant at 9.4 kpc is lensed by an M-dwarf binary with total mass of M=0.51 solar masses at distance 2.9 kpc. Furthermore a method is …
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Python Implementation of Batch Least-Squares Filter for Satellite Orbit Determination
<p>Accurate orbit determination techniques are fundamental to the maintenance and execution of any ongoing space-based mission. This project serves as a guide and demonstration of a batch sequential least-squares filter for Earth-orbiting satellites using exclusively open-source technologies. The …
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Back to Work: The Effects of Goal Conflict on Working Mothers
Why is the rate of depression for women two times that of men? In the “we can do it all” generation, becoming a mother can be one of the most frustrating and rewarding experiences in one’s lifetime. Fulfilling career goals in addition to the demands motherhood can cause psychological distress. In …
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Heavy metal concentrations, aging techniques and population characteristics of mink in Virginia: with a review of the literature on delayed implantation in the mink
Lead, cadmium, zinc and copper concentrations were determined in bone, kidney and liver samples of mink (Mustela vison) trapped during 1981-83 in Virginia. Ages were determined to obtain population information. The literature on delayed implantation in mink was reviewed. Lead and cadmium …
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Personalized Learning: A Meta-Analysis
Personalized learning has no agreed upon definition, models, or systemization of how to employ it. There is even variation in concerning its benefits. This research attempts build an understanding of personalized learning based on the existent literature. Using qualitative content analysis methods, …
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The halfway house concept : contemporary application to offenders
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