Computer Science – Performance
Scientific paper
Jan 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aas...21522202f&link_type=abstract
American Astronomical Society, AAS Meeting #215, #222.02; Bulletin of the American Astronomical Society, Vol. 42, p.526
Computer Science
Performance
Scientific paper
The Cosmic Origins Spectrograph (COS), a sensitive ultraviolet spectrograph, was successfully installed on the Hubble Space Telescope during Servicing Mission 4. COS covers the 1150 -- 3200 A range with moderate spectral resolution (R 20,000) at sensitivities that are 2 to >10 times better than the previous capabilities on HST. In its low resolution FUV grating (G140L), COS has spectral response down to the Lyman limit (900 A) at sensitivities that are comparable to or significantly larger than those of the Far Ultraviolet Spectroscopic Explorer over the same wavelength range. In this talk, I will present results from the first five months of COS science operations, focusing on observations obtained as part of the Guaranteed Time Observations allocated to the COS science team. These include observations of the transiting extrasolar planet, HD209458b; sightlines through the diffuse IGM and near dwarf galaxies; and probes of the He II Gunn-Peterson effect using the extreme FUV (<1150 A) coverage of COS. In presenting these data, I will highlight the on-orbit performance of COS and the expanded scientific capabilities of HST enabled by this new instrument.
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