Astronomy and Astrophysics – Astrophysics
Scientific paper
2001-07-27
Mon.Not.Roy.Astron.Soc. 328 (2001) 986
Astronomy and Astrophysics
Astrophysics
total 13 pages, including 6 figures and no table, MNRAS, submitted, for better quality pdf file is avalilable at http://astr
Scientific paper
10.1046/j.1365-8711.2001.04973.x
In this paper, we show that the pattern of microlensing light curve anomalies induced by multiple planets are well described by the superposition of those of the single-planet systems where the individual planet-primary binary pairs act as independent lens systems. Since the outer deviation regions around the planetary caustics of the individual planets occur in general at different locations, we find that the pattern of anomalies in these regions are hardly affected by the existence of other planet(s). This implies that even if an event is caused by a multiple planetary system, a simple single-planet lensing model is good enough for the description of most anomalies caused by the source passage of the outer deviation regions. Detection of the anomalies resulting from the source trajectory passing both the outer deviation regions caused by more than two planets will provide a new channel of detecting multiple planets.
An Jin H.
Chang Heon-Young
Chang Kyongae
Han Cheongho
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