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Title: FIRST ULTRAVIOLET REFLECTANCE SPECTRA OF PLUTO AND CHARON BY THE HUBBLE SPACE TELESCOPE COSMIC ORIGINS SPECTROGRAPH: DETECTION OF ABSORPTION FEATURES AND EVIDENCE FOR TEMPORAL CHANGE

Abstract

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.

Authors:
; ;  [1]; ;  [2]
  1. Southwest Research Institute, 1050 Walnut Street, Boulder, CO 80302 (United States)
  2. Nebraska Wesleyan University, 5000 Saint Paul Avenue, Lincoln, NE 68504 (United States)
Publication Date:
OSTI Identifier:
22034308
Resource Type:
Journal Article
Resource Relation:
Journal Name: Astronomical Journal (New York, N.Y. Online); Journal Volume: 143; Journal Issue: 1; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ABSORPTION; ABSORPTION SPECTRA; ALBEDO; ASTRONOMY; ASTROPHYSICS; DETECTION; EMISSION SPECTRA; PLUTO PLANET; SATELLITES; SURFACES; TELESCOPES; ULTRAVIOLET RADIATION; ULTRAVIOLET SPECTRA

Citation Formats

Stern, S. A., Spencer, J. R., Shinn, A., Cunningham, N. J., and Hain, M. J., E-mail: astern@swri.edu. FIRST ULTRAVIOLET REFLECTANCE SPECTRA OF PLUTO AND CHARON BY THE HUBBLE SPACE TELESCOPE COSMIC ORIGINS SPECTROGRAPH: DETECTION OF ABSORPTION FEATURES AND EVIDENCE FOR TEMPORAL CHANGE. United States: N. p., 2012. Web. doi:10.1088/0004-6256/143/1/22.
Stern, S. A., Spencer, J. R., Shinn, A., Cunningham, N. J., & Hain, M. J., E-mail: astern@swri.edu. FIRST ULTRAVIOLET REFLECTANCE SPECTRA OF PLUTO AND CHARON BY THE HUBBLE SPACE TELESCOPE COSMIC ORIGINS SPECTROGRAPH: DETECTION OF ABSORPTION FEATURES AND EVIDENCE FOR TEMPORAL CHANGE. United States. doi:10.1088/0004-6256/143/1/22.
Stern, S. A., Spencer, J. R., Shinn, A., Cunningham, N. J., and Hain, M. J., E-mail: astern@swri.edu. Sun . "FIRST ULTRAVIOLET REFLECTANCE SPECTRA OF PLUTO AND CHARON BY THE HUBBLE SPACE TELESCOPE COSMIC ORIGINS SPECTROGRAPH: DETECTION OF ABSORPTION FEATURES AND EVIDENCE FOR TEMPORAL CHANGE". United States. doi:10.1088/0004-6256/143/1/22.
@article{osti_22034308,
title = {FIRST ULTRAVIOLET REFLECTANCE SPECTRA OF PLUTO AND CHARON BY THE HUBBLE SPACE TELESCOPE COSMIC ORIGINS SPECTROGRAPH: DETECTION OF ABSORPTION FEATURES AND EVIDENCE FOR TEMPORAL CHANGE},
author = {Stern, S. A. and Spencer, J. R. and Shinn, A. and Cunningham, N. J. and Hain, M. J., E-mail: astern@swri.edu},
abstractNote = {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.},
doi = {10.1088/0004-6256/143/1/22},
journal = {Astronomical Journal (New York, N.Y. Online)},
number = 1,
volume = 143,
place = {United States},
year = {Sun Jan 15 00:00:00 EST 2012},
month = {Sun Jan 15 00:00:00 EST 2012}
}