Spitzer Spectral Observations of the Deep Impact Ejecta

@article{Lisse2006SpitzerSO,
  title={Spitzer Spectral Observations of the Deep Impact Ejecta},
  author={Casey M. Lisse and Jeffrey E. VanCleve and A. C. Adams and Michael F. A’Hearn and Yanga R. Fern{\'a}ndez and Tony L. Farnham and Lee Armus and Carl J. Grillmair and James G. Ingalls and Michael J. S. Belton and O. Groussin and Lucy A. McFadden and Karen J. Meech and Peter H. Schultz and Benton C. Clark and Lori M. Feaga and Jessica M. Sunshine},
  journal={Science},
  year={2006},
  volume={313},
  pages={635 - 640}
}
Spitzer Space Telescope imaging spectrometer observations of comet 9P/Tempel 1 during the Deep Impact encounter returned detailed, highly structured, 5- to 35-micrometer spectra of the ejecta. Emission signatures due to amorphous and crystalline silicates, amorphous carbon, carbonates, phyllosilicates, polycyclic aromatic hydrocarbons, water gas and ice, and sulfides were found. Good agreement is seen between the ejecta spectra and the material emitted from comet C/1995 O1 (Hale-Bopp) and the… 

Subaru/COMICS Mid-Infrared Spectroscopic Observations of the Dust Plume from Comet 9P/Tempel

We carried out mid-infrared observations of the Deep Impact (DI) collision with a Jupiter-family (JF) comet, 9P/Tempel, using the Cooled Mid-Infrared Camera and Spectrometer (COMICS) on the 8.2 m

THE SPITZER INFRARED SPECTROGRAPH DEBRIS DISK CATALOG. II. SILICATE FEATURE ANALYSIS OF UNRESOLVED TARGETS

During the Spitzer Space Telescope cryogenic mission, astronomers obtained Infrared Spectrograph (IRS) observations of hundreds of debris disk candidates that have been compiled in the Spitzer IRS

Investigation of dust and water ice in comet 9P/Tempel 1 from Spitzer observations of the Deep Impact event

Context. The Spitzer spacecraft monitored the Deep Impact event on 2005 July 4 providing unique infrared spectrophotometric data that enabled exploration of comet 9P/Tempel 1’s activity and coma

SPITZER EVIDENCE FOR A LATE-HEAVY BOMBARDMENT AND THE FORMATION OF UREILITES IN η CORVI At ∼1 Gyr

We have analyzed Spitzer and NASA/IRTF 2–35 μm spectra of the warm, ∼350 K circumstellar dust around the nearby MS star η Corvi (F2V, 1.4 ± 0.3 Gyr). The spectra show clear evidence for warm, water-

Circumstellar Dust Created by Terrestrial Planet Formation in HD 113766

We present an analysis of the gas-poor circumstellar material in the HD 113766 binary system (F3/F5, 10-16 Myr), recently observed by the Spitzer Space Telescope. For our study we have used the IR

Mid-infrared Spectroscopic Observations of Comet 17P/Holmes Immediately After Its Great Outburst in 2007 October

Dust grains of crystalline silicate, which are rarely present in interstellar space, were found in cometary nuclei. These crystalline silicates are thought to have formed by annealing of amorphous

Mid-infrared spectra of cometary dust: the evasion of its silicate mineralogy

Infrared spectra of dust in cometary comae provide a way to identify its silicate constituents, and this is crucial for correctly understanding the condition under which our planetary system is

INFRARED SPECTROSCOPY OF COMET 73P/SCHWASSMANN-WACHMANN 3 USING THE SPITZER SPACE TELESCOPE

We have used the Spitzer Space Telescope Infrared Spectrograph (IRS) to observe the 5–37 μm thermal emission of comet 73P/Schwassmann-Wachmann 3 (SW3), components B and C. We obtained low spectral
...

References

SHOWING 1-10 OF 58 REFERENCES

The Dust Grains from 9P/Tempel 1 Before and After the Encounter with Deep Impact

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.

Rotationally Resolved 8-35 Micron Spitzer Space Telescope Observations of the Nucleus of Comet 9P/Tempel 1

We have utilized the Spitzer Space Telescope (SST) Infrared Spectrograph (IRS) to directly observe thermal emission from the nucleus of comet 9P/Tempel 1 on UT 2004 March 25-27. We obtained 8-35 μm

The Spectrum of Comet Hale-Bopp (C/1995 O1) Observed with the Infrared Space Observatory at 2.9 Astronomical Units from the Sun

Several broad emission features observed in the 7- to 45-micrometer region suggest the presence of silicates, particularly magnesium-rich crystalline olivine, similar to those observed inThe dust envelopes of Vega-type stars.

The Absence of Crystalline Silicates in the Diffuse Interstellar Medium

Infrared spectroscopy provides a direct handle on the composition and structure of interstellar dust. We have studied the dust along the line of sight toward the Galactic center using Short

Silicate Mineralogy of the Dust in the Inner Coma of Comet C/1995 01 (Hale-Bopp) Pre- and Postperihelion

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

Discovery of calcite in the solar type protostar NGC 1333-IRAS 4

We present observations, obtained with ISO-LWS, of the continuum between 50-200m of the solar type proto- star IRAS 4, in the NGC 1333 complex. The continuum presents an excess, around 95m, that we

Determining the ages of comets from the fraction of crystalline dust

This work shows that thermal annealing of the original, amorphous grains in the hot inner nebula slowly increases the fractional abundance of crystalline material over time, which can explain observed variations in both the volatile and dusty components of comets, while also providing a natural indicator of a comet's mean formation age.

A ‘dry’ condensation origin for circumstellar carbonates

Experiments demonstrate that carbonates can be formed with amorphous silicates during the non-equilibrium condensation of a silicate gas in a H2O-CO2-rich vapour, and propose that the observed astrophysical carbonates have condensed in H 2O(g)-CO2(g-rich, high-temperature and high-density regions such as evolved stellar winds, or those induced by grain sputtering upon shocks in protostellar outflows.

The Coma of Comet 9P/Tempel 1

As comet 9P/Tempel 1 approaches the Sun in 2004–2005, a temporary atmosphere, or “coma,” will form, composed of molecules and dust expelled from the nucleus as its component icy volatiles sublimate.

8-13 Micron Spectroscopy of Young Stars

We present 8-13 μm spectra of 23 young stars acquired with the UKIRT CGS3 spectrometer, including T Tauri, Herbig Ae/Be, and FU Orionis stars. Silicate emission and absorption features can generally
...