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Paper: Search for Exospheric Signatures from Transiting Planets
Volume: 321, Extrasolar Planets: Today and Tomorrow
Page: 209
Authors: Iro, N.; Coustenis, A.; Moutou, C.; Lajous, N.; Mayor, M.; Queloz, D.
Abstract: We searched for spectral signatures from the exosphere of HD209- 458b in the UV and the near-IR with UVES and ISAAC at the VLT. We looked in particular for the helium absorption feature at 10,830 Å predicted to be among the strongest ones. The upper limit of the He I line derived is 0.5% at 3 σ for a 3 Å bandwidth. Planet-induced chromospheric activity search on HD209458 was also performed.
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