Silicate Mineralogy of the Dust in the Inner Coma of Comet C/1995 01 (Hale-Bopp) Pre- and Postperihelion
- D. WoodenD. Harker C. McMurtry
- 1 June 1999
Physics, Geology
We present 7.5-13.4 μm infrared (IR) spectrophotometry (R≃180-360) of the 10 μm silicate emission from dust in the inner coma (i.e., within a diameter of 3'') of comet C/1995 O1 (Hale-Bopp) at four…
The Dust Grains from 9P/Tempel 1 Before and After the Encounter with Deep Impact
- D. HarkerC. WoodwardD. Wooden
- 14 October 2005
Environmental Science, Physics
Dust ejected from the nucleus of comet 9P/Tempel 1 before and after its encounter with Deep Impact left a smooth featureless spectrum, similar to that observed before the impact, suggesting that the impact did not produce a new active region releasing small particles on the nucleus.
Grain Properties of Comet C/1995 O1 (Hale-Bopp)
- D. HarkerD. WoodenC. WoodwardC. Lisse
- 18 June 2001
Physics
We present the analysis of 7.6-13.2 μm infrared (IR) spectrophotometry (R ≃ 250) of comet C/1995 O1 (Hale-Bopp), in conjunction with concurrent observations that extend the wavelength coverage of the…
The Mars Science Laboratory Curiosity rover Mastcam instruments: Preflight and in‐flight calibration, validation, and data archiving
- Jimmy D BellA. Godber R. Deen
- 1 July 2017
Environmental Science, Engineering
The NASA Curiosity rover Mast Camera (Mastcam) system is a pair of fixed‐focal length, multispectral, color CCD imagers mounted ~2 m above the surface on the rover's remote sensing mast, along with…
MAHLI at the Rocknest sand shadow: Science and science‐enabling activities
- M. MinittiLinda C. Kah T. V. Beek
- 1 November 2013
Environmental Science, Geology
During Martian solar days 57–100, the Mars Science Laboratory Curiosity rover acquired and processed a solid (sediment) sample and analyzed its mineralogy and geochemistry with the Chemistry and…
SPITZER OBSERVATIONS OF COMET 67P/CHURYUMOV-GERASIMENKO AT 5.5–4.3 AU FROM THE SUN
- M. KelleyD. WoodenC. TubianaH. BoehnhardtC. WoodwardD. Harker
- 24 March 2009
Physics, Environmental Science
We report Spitzer Space Telescope observations of comet 67P/Churyumov-Gerasimenko at 5.5 and 4.3 AU from the Sun, post-aphelion. Comet 67P is the primary target of the European Space Agency's Rosetta…
Annealing of Silicate Dust by Nebular Shocks at 10 AU
Silicate dust grains in the interstellar medium are known to be mostly amorphous, yet crystalline silicate grains have been observed in many long-period comets and in protoplanetary disks. Annealing…
Measurement of Submicron Grains in the Coma of Comet Hale-Bopp C/1995 O1 during 1997 February 15-20 UT
- D. M. WilliamsC. G. Mason H. Butner
- 1 October 1997
Physics
We present 1.20-18.5 μm infrared (IR) spectrophotometric measurements of comet C/1995 O1 (Hale-Bopp) during 1997 February 15 and 20 UT. The spectral energy distribution (SED) was dominated by…
Discovery of Crystalline Silicates in Comet C/2001 Q4 (NEAT)
- D. WoodenC. WoodwardD. Harker
- 3 August 2004
Physics, Materials Science
We present the 10 μm silicate feature of the dynamically new Oort Cloud comet C/2001 Q4 (NEAT) 5 days prior to perihelion (rh = 0.97 AU, Δ = 0.35 AU, 2004 May 11.25 and 11.30 UT) observed with the…
A Spitzer Study of Comets 2P/Encke, 67P/Churyumov-Gerasimenko, and C/2001 HT50 (LINEAR-NEAT)
- M. KelleyC. Woodward E. Polomski
- 18 July 2006
Physics
We present infrared images and spectra of comets 2P/Encke, 67P/Churyumov-Gerasimenko, and C/2001 HT50 (LINEAR-NEAT) as part of a larger program to observe comets inside of 5 AU from the Sun with the…
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