Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2012
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aj....143...22s&link_type=abstract
The Astronomical Journal, Volume 143, Issue 1, article id. 22 (2012).
Astronomy and Astrophysics
Astronomy
Planets And Satellites: Surfaces
Scientific paper
We have observed the mid-UV spectra of both Pluto and its large satellite, Charon, at two rotational epochs using the Hubble Space Telescope (HST) Cosmic Origins Spectrograph (COS) in 2010. These are the first HST/COS measurements of Pluto and Charon. Here we describe the observations and our reduction of them, and present the albedo spectra, average mid-UV albedos, and albedo slopes we derive from these data. These data reveal evidence for a strong absorption feature in the mid-UV spectrum of Pluto; evidence for temporal change in Pluto's spectrum since the 1990s is reported, and indirect evidence for a near-UV spectral absorption on Charon is also reported.
Alan Stern S.
Cunningham Nathaniel J.
Hain M. J.
Shinn A.
Spencer John Robert
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