Transits against Fainter Stars: The Power of Image Deconvolution

Details Transits against Fainter Stars: The Power of Image Deconvolution Transits against Fainter Stars: The Power of Image Deconvolution

2009-03-07

arxiv.org/abs/0903.1329v1

published in Proceedings of IAU Symposium 253, Transiting Planets, 2009, pp 55-61

Astronomy and Astrophysics

Astrophysics

Earth and Planetary Astrophysics

Scientific paper

10.1017/S1743921308026239

Compared to bright star searches, surveys for transiting planets against fainter (V=12-18) stars have the advantage of much higher sky densities of dwarf star primaries, which afford easier detection of small transiting bodies. Furthermore, deep searches are capable of probing a wider range of stellar environments. On the other hand, for a given spatial resolution and transit depth, deep searches are more prone to confusion from blended eclipsing binaries. We present a powerful mitigation strategy for the blending problem that includes the use of image deconvolution and high resolution imaging. The techniques are illustrated with Lupus-TR-3 and very recent IR imaging with PANIC on Magellan. The results are likely to have implications for the CoRoT and KEPLER missions designed to detect transiting planets of terrestrial size.

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