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NICMOS transmission spectroscopy of HD 189733b: controversy becomes confirmation
techniques spectroscopic methods data analysis planets and satellites atmospheres planets and satellites composition
2010/11/10
Spectral features corresponding to methane and water opacity were reported based on spectroscopic observations of HD 189733b with Hubble/NICMOS. Recently,these data, and other NICMOS exoplanet spectro...
Transmission Spectra of Transiting Planet Atmospheres: Model Validation and Simulations of the Hot Neptune GJ 436b for JWST
Earth and Planetary Astrophysics (astro-ph.EP)
2010/12/29
We explore the transmission spectrum of the Neptune-class exoplanet GJ 436b, including the possibility that its atmospheric opacity is dominated by a variety of non- equilibrium chemical products. We ...
A new look at NICMOS transmission spectroscopy of HD189733, GJ-436 and XO-1: no conclusive evidence for molecular features
Earth and Planetary Astrophysics (astro-ph.EP)
2010/12/28
We present a re-analysis of archival HST/NICMOS transmission spectroscopy of three exoplanet systems; HD 189733, GJ-436 and XO-1. Detections of several molecules, including H20, CH4 and CO2, have been...
TGCat, The Chandra Transmission Grating Catalog and Archive: Systems, Design and Accessibility
Transmission Grating Catalog Systems Design Accessibility
2010/3/8
The recently released Chandra Transmission Grating Catalog and
Archive, TGCat, presents a fully dynamic on-line catalog allowing users to
browse and categorize Chandra gratings observations quickly ...