Mars: The Origin of the 3.58- and 3.69-Micron Minima in the Infrared Spectra

  title={Mars: The Origin of the 3.58- and 3.69-Micron Minima in the Infrared Spectra},
  author={Donald G. Rea and B T O'leary and William M. Sinton},
  pages={1286 - 1288}
The 3- to 4-micron spectra of Mars, recorded with the 200-inch telescope in 1958, were reexamined in order to ascertain whether the minima at 3.58 and 3.69 microns are due to telluric HDO molecules. Solar spectra obtained at Denver and water vapor abundances derived from radiosonde flights during the observing period were used. There seems to be a correlation between the intensities of the 3.58- and 3.69-micron features and the amount of telluric water vapor in the optical path. An important… 

The Role of Infrared Spectroscopy in the Biological Exploration of Mars

The Role of Infrared Spectroscopy in the Biological Exploration of Mars. The biological exploration of Mars is rapidly becoming a major program in space research. Among the variety of techniques

Is There Vegetation on Mars?

Calculated radiation flux, at appropriate energies and known temperature variation, could account for seasonal formation of color centers and bleaching of Mars if a simple trap model is assumed.

The ratio of deuterium to hydrogen in the Venus atmosphere

Interpretations of the Lyman-α data from Mariner 5 are critically discussed, in view of the finding by the experimenters that a normal exosphere of atomic hydrogen does not fit. A two-component

The martian surface.

With the scarcity of factual data and the difficulty of applying crucial tests, many of the properties of the Martian surface remain a mystery; the planet may become a source of great surprises in

The light and dark areas of Mars

Organic and inorganic interpretations of the martian UV–IR reflectance spectrum

Although some data from the Viking Lander biology experiments can be interpreted as indicative of biological activity, the existence of organisms in the martian soil samples is considered unlikely

Mineral stability at the Martian surface

Thermodynamic calculations of mineral stability fields under a range of predicted surface conditions for Mars indicate that goethite will be unstable except under the wettest and coldest parts (pH2O



Interpretation of the 3-to 4-Micron Infrared Spectrum of Mars

Infrared reflection spectra have been recorded for a large number of inorganic and organic samples, including minerals and biological specimens, for the purpose of interpreting the 3-to 4-� spectrum of Mars and no satisfactory explanation is advanced and the problem remains unresolved.

Sinton Bands: Evidence for Deuterated Water on Mars

The infrared absorption bands observed by Sinton at 2710, 2793, and 2898 cm-1, in the spectrum of Mars, may be due to gaseous D2O and HDO in the Martian atmosphere, presumably because of escape of the lighter gases from Mars, with accompanying gravitational fractionation of the hydrogen isotopes.


Abstract The transmission of the water-vapor absorption bands at 0.96, 1.1 and 1.4 microns is used as the determinant of the total precipitable water vapor in the path of solar radiation. The method


And, finally, a few physiological remarks about the profession of the astronomer. Despite the fact that vision is the outstanding physiological function in his professional occupation, some other

Identification of Aldehyde in Mars Vegetation Regions.

reports detection of absorption in the 3- to 4-,u region on Mars. We do not have data on water abundance for his observing site and so cannot make the appropriate analysis

  • 1964

Argonne National Laboratory Radiological Physics Division Rept