Molecular Signatures in the Near Infrared Dayside Spectrum of HD 189733b

Details Molecular Signatures in the Near Infrared Dayside Spectrum of HD 189733b Molecular Signatures in the Near Infrared Dayside Spectrum of HD 189733b

2008-12-10

arxiv.org/abs/0812.1844v2

Astronomy and Astrophysics

Astrophysics

13 pages, 3 figures. accepted in Astrophysical Journal Letters

Scientific paper

We have measured the dayside spectrum of HD 189733b between 1.5 and 2.5 microns using the NICMOS instrument on the Hubble Space Telescope. The emergent spectrum contains significant modulation, which we attribute to the presence of molecular bands seen in absorption. We find that water (H2O), carbon monoxide (CO), and carbon dioxide (CO2) are needed to explain the observations, and we are able to estimate the mixing ratios for these molecules. We also find temperature decreases with altitude in the ~0.01 < P < ~1 bar region of the dayside near-infrared photosphere and set an upper limit to the dayside abundance of methane (CH4) at these pressures.

Affiliated with

Also associated with

No associations

Rating

Molecular Signatures in the Near Infrared Dayside Spectrum of HD 189733b does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Molecular Signatures in the Near Infrared Dayside Spectrum of HD 189733b, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Molecular Signatures in the Near Infrared Dayside Spectrum of HD 189733b will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-527163