Near‐Field Microlensing from Wide‐Field Surveys
نویسندگان
چکیده
منابع مشابه
Ground-based Microlensing Surveys
Microlensing is a proven extrasolar planet search method that has already yielded the detection of four exoplanets. These detections have changed our understanding of planet formation “beyond the snowline” by demonstrating that Neptune-mass planets with separations of several AU are common. Microlensing is sensitive to planets that are generally inaccessible to other methods, in particular cool...
متن کاملCurrent Status of the Microlensing Surveys
The ongoing microlensing searches have generated more photometric measurements of pulsating stars than all previous observing projects combined. In particular, OGLE has made ∼ 340, 000 B, V, and I-band measurements of ∼ 1, 300 Cepheids in the Large Magellanic Clouds accessible over Internet. Microlensing searches contributed to the development of very efficient image subtraction software which ...
متن کاملContact Binary Stars in Microlensing Surveys
A brief summary of properties of the contact binaries is presented, with the goal to stress the unsolved problems of their formation and evolution as well as their potential contribution to studies of Galactic stellar populations. The first results from the OGLE survey, where the contact binaries contribute a full two thirds among 933 eclipsing binary stars, are presented. 1 Properties of conta...
متن کاملNearfield beamforming using nearfield/farfield reciprocity
We establish the asymptotic equivalence, up to complex conjugation, of two problems: (i) determining the near eld performance of a far eld beampattern speci cation, and (ii) determining the equivalent far eld beampattern corresponding to a near eld beampattern speci cation. Using this reciprocity relationship we develop a computationally simple procedure to design a beamforming array to achieve...
متن کاملThe Contribution of Microlensing Surveys to the Distance Scale
In the early nineties several teams started large scale systematic surveys of the Magellanic Clouds and the Galactic Bulge to search for microlensing effects. As a by product, these groups have created enormous time-series databases of photometric measurements of stars with a temporal sampling duration and accuracy which are unprecedented. They provide the opportunity to test the accuracy of pr...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 2008
ISSN: 0004-637X,1538-4357
DOI: 10.1086/588083