Looking at the key atmospheric gases in Titan with Herschel/PACS and APEX/SHFI

Details Looking at the key atmospheric gases in Titan with Herschel/PACS and APEX/SHFI Looking at the key atmospheric gases in Titan with Herschel/PACS and APEX/SHFI

Oct 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011epsc.conf.1144r&link_type=abstract

EPSC-DPS Joint Meeting 2011, held 2-7 October 2011 in Nantes, France. http://meetings.copernicus.org/epsc-dps2011, p.1144

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Scientific paper

In the Framework of the Herschel Guaranteed Time Key program "Water and related chemistry in the Solar System" (HssO) [1], the Photodetector Array Camera and Spectrometer (PACS) [2] onboard the Herschel Space Observatory [3] is delivering far-infrared and sub-millimetre spectroscopic observations of Titan atmosphere (covering the 51 - 220 μm range) with medium spectral resolution (a resolving power from 940 to 5500 depending of the wavelength) and high sensitivity. On the other hand, high spectral resolution with ground-based telescopes allows to resolve the line shapes sufficiently to improve the accuracy retrieveing abundance profiles. In this contribution we will present (1) high S/N spectrum of Titan recorded by Herschel/ PACS grating spectrometer during June (reported by [4]) and December 2010, and constraints on both the temperature and the key abundances in Titan's atmosphere. (2) CO(2-1) and HCN(3-2) line observations as seen by APEX / Swedish Heterodyne Facility Instrument (SHFI) -channel separation of 122kHz and bandwidth of 1GHz- during March and June 2008 as an exploration of the capabilities of this instrument.

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