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Spitzer Spectral Observations of the Deep Impact Ejecta
Open accessAbstract
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 circumstellar material around the young stellar object HD100546. The atomic abundance of the observed material is consistent with solar and C1 chondritic abundances, and the dust-to-gas ratio was determined to be greater than or equal to 1.3. The presence of the observed mix of materials requires efficient methods of annealing amorphous silicates and mixing of high- and low-temperature phases over large distances in the early protosolar nebula.
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Cited by
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Brownlee, D., Tsou, P., Aléon, J., Alexander, C. M. O., Araki, T., Bajt, S., Baratta, G. A., Bastien, R., Bland, P., Bleuet, P., et al. (2006) · Science · doi:10.1126/science.1135840 · Cited by 937
Self-citationThe Chemical Composition of Comets—Emerging Taxonomies and Natal Heritage
Mumma, M. J., & Charnley, S. B. (2011) · Annual Review of Astronomy and Astrophysics · doi:10.1146/annurev-astro-081309-130811 · Cited by 916
Jewitt, D. (2012) · The Astronomical Journal · doi:10.1088/0004-6256/143/3/66 · Cited by 318
“Their Figure 4 gives a differential power-law size index q = 3.7 over the 1 μm a 100 μm size range, while other investigators have found slightly steeper distributions (Lisse et al. 2006).”
InfluentialMottl, M. J., Glazer, B. T., Kaiser, R. I., & Meech, K. J. (2007) · Geochemistry · doi:10.1016/j.chemer.2007.09.002 · Cited by 117
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Metadata
- Authors
- Lisse, C. M., VanCleve, J., Adams, A. C., A'Hearn, M. F., Fernández, Y. R., Farnham, T. L., Armus, L., Grillmair, C. J., Ingalls, J., Belton, M. J. S., Groussin, O., McFadden, L. A., Meech, K. J., Schultz, P. H., Clark, B. C., Feaga, L. M., & Sunshine, J. M.
- Venue
- Science
- Published
- 2006-08-04
- Volume
- 313
- Issue
- 5787
- Pages
- 635-640
- ISSN
- 0036-8075 (ISSN-L)
- 1095-9203
- OpenAlex
- W2127393091
- Cited by
- 341
- References
- 0
- FWCI
- 22.56
- Type
- journal article
- Language
- en
- Open access
- green
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- Lisse, C. M., VanCleve, J., Adams, A. C., A'Hearn, M. F., Fernández, Y. R., Farnham, T. L., Armus, L., Grillmair, C. J., Ingalls, J., Belton, M. J. S., Groussin, O., McFadden, L. A., Meech, K. J., Schultz, P. H., Clark, B. C., Feaga, L. M., & Sunshine, J. M. (2006). Spitzer Spectral Observations of the Deep Impact Ejecta. Science. https://doi.org/10.1126/science.1124694
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