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The heliocentric evolution of cometary infrared spectra: results from an organic grain model.
Chyba CF, Sagan C, Mumma MJ. Chyba CF, et al. Among authors: sagan c. Icarus. 1989;79:362-81. doi: 10.1016/0019-1035(89)90083-3. Icarus. 1989. PMID: 11542163
Observations of Comets Halley and Wilson reveal an emission feature peaking near 3.4 micrometers, characteristic of C-H stretching in hydrocarbons. We have previously (Chyba and Sagan 1987a, Nature (London) 330, 350-353) fit this feature with a simple two-component …
Observations of Comets Halley and Wilson reveal an emission feature peaking near 3.4 micrometers, characteristic of C-H stretching in …
Organic solids produced from simple C/H/O/N ices by charged particles: applications to the outer solar system.
Khare BN, Thompson WR, Chyba CF, Arakawa ET, Sagan C. Khare BN, et al. Among authors: sagan c. Adv Space Res. 1989;9(2):41-53. doi: 10.1016/0273-1177(89)90362-1. Adv Space Res. 1989. PMID: 11537360
The chromophore is a yellowish to tan organic material (a tholin) which we have studied by UV-VIS reflection and transmission, and IR transmission spectroscopy. Its yield, -1 C keV-1, implies substantial production of organic solids by the action of cosmic rays and radionu …
The chromophore is a yellowish to tan organic material (a tholin) which we have studied by UV-VIS reflection and transmission, and IR transm …
Chemical investigation of Titan and Triton tholins.
McDonald GD, Thompson WR, Heinrich M, Khare BN, Sagan C. McDonald GD, et al. Among authors: sagan c. Icarus. 1994;108:137-45. doi: 10.1006/icar.1994.1046. Icarus. 1994. PMID: 11539478
198 results