Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011ess.....2.1101b&link_type=abstract
American Astronomical Society, ESS meeting #2, #11.01
Astronomy and Astrophysics
Astronomy
Scientific paper
It has recently been demonstrated that multi-object spectroscopy with wide slits is a powerful technique for obtaining ground-based transit spectroscopy data based on the first measurement of the transmission spectrum of the super-earth GJ1214b. I will present new results that were obtained with this method to investigate a number of compelling questions in the area of exoplanet atmospheres. I will show transmission and occultation spectroscopy observations of hot-jupiters in the optical that contribute to our understanding of the emerging classes of such planets. I will also show measurements of the transmission spectrum of GJ1214b in the H- and K-bands from the first use of the multi-object technique in the near-infrared. These data have bearing on the claim that this planet's transmission spectrum exhibits strong absorption in the K-band, which can only arise if the planet's atmosphere has a hydrogen-dominated composition.
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