Preliminary Results of Lunar Spectra
Multi-component Lorentzian spectral fitting
In the following plots, the top panel gives the original spectrum (solid line) overplotted with fitted spectrum (dotted line); the
bottom panel shows the fitted spectrum. In the following spreadsheets, from left to right, the columns give line strength [-ln(P)],
line width (cm^-1), and line center (cm^-1). Each spectrum is fitted by multi-component Lorentzian function plus a linear background
(f = a0 + a1 * w + a2 * z1 + a3 * z2 ...., where z_i is the ith Lorentzian component). For the following fits, 42, 46, and 92 components
are identified respectively for OxygenA, OxygenB and Water line.
- Oxygen A BS GIF file , PostScript file, Spreadsheet
- Oxygen A ES GIF file , PostScript file, Spreadsheet
- Oxygen B BS GIF file , PostScript file, Spreadsheet
- Oxygen B ES GIF file , PostScript file, Spreadsheet
- Water BS GIF file , PostScript file, Spreadsheet
- Water ES GIF file , PostScript file, Spreadsheet
ES/MS ratio spectra:
Oxygen A ES/BS ratio spectra at varying airmass:
- Airmass 1.397, PostScript file, Spreadsheet
- Airmass 1.525, PostScript file, Spreadsheet
- Airmass 1.701, PostScript file, Spreadsheet
- Airmass 1.942, PostScript file, Spreadsheet
- Airmass 2.273, PostScript file, Spreadsheet
- Airmass 2.740, PostScript file, Spreadsheet
- Airmass 3.468, PostScript file, Spreadsheet
- Airmass 4.718, PostScript file, Spreadsheet
Oxygen B ES/BS ratio spectra at varying airmass:
- Airmass 1.397, PostScript file, Spreadsheet
- Airmass 1.525, PostScript file, Spreadsheet
- Airmass 1.701, PostScript file, Spreadsheet
- Airmass 1.942, PostScript file, Spreadsheet
- Airmass 2.273, PostScript file, Spreadsheet
- Airmass 2.740, PostScript file, Spreadsheet
- Airmass 3.468, PostScript file, Spreadsheet
- Airmass 4.718, PostScript file, Spreadsheet
Water ES/BS ratio spectra at varying airmass:
- Airmass 1.397, PostScript file, Spreadsheet
- Airmass 1.525, PostScript file, Spreadsheet
- Airmass 1.701, PostScript file, Spreadsheet
- Airmass 1.942, PostScript file, Spreadsheet
- Airmass 2.273, PostScript file, Spreadsheet
- Airmass 2.740, PostScript file, Spreadsheet
- Airmass 3.468, PostScript file, Spreadsheet
- Airmass 4.718, PostScript file, Spreadsheet
Line Profiles at Different Airmass
The spectral profiles below are the preliminary analysis result of
the data taken on September 4, 1999, at Palomar Observatory. Halpha,
Oxygen, and Water spectra are shown. For each spectrum the bias
is removed, and the sky spectra are subtracted from both the moonshine
and the earthshine spectra. The spectra are then normalized to the
continuum. The following plots give the spectra at different wavelengths
with different airmasses, and the natural logarithm of the intensity
of each spectrum is obtained to give the Beer's law fitting plot.
- Halpha Moonshine Spectrum with Continuum: GIF
file, PostScript file.
- Halpha Earthshine Spectrum with Continuum: GIF
file, PostScript file.
- Halpha Moonshine Spectrum at the Line: GIF
file, PostScript file.
- Halpha Earthshine Spectrum at the Line: GIF
file, PostScript file.
- Oxygen Moonshine Spectrum with Continuum: GIF
file, PostScript file.
- Oxygen Earthshine Spectrum with Continuum: GIF
file, PostScript file.
- Oxygen Moonshine Spectrum at the Line: GIF
file, PostScript file.
- Oxygen Earthshine Spectrum at the Line: GIF
file, PostScript file.
- Water Moonshine Spectrum with Continuum: GIF
file, PostScript file.
- Water Earthshine Spectrum with Continuum: GIF
file, PostScript file.
- Water Moonshine Spectrum at the Line: GIF
file, PostScript file.
- Water Earthshine Spectrum at the Line: GIF
file, PostScript file.
Earthine to Moonshine Ratio Spectra
The following plots give the ratio of earthshine to moonthine
(both normalized to continuum) over the spectra at different airmasses.
(These figures make Figure 1 in the manuscript.)
-
Optical Depth of the Moonshine and Earthshine Spectra (at different airmasses)
(These figures make Figure 2 in the manuscript.)
-
Line Intensity of the Moonshine and Earthshine Spectra (at different airmasses)
(These figures make Figure 3 in the manuscript, and the spreadsheets make Table I in the manuscript. Figures are made
for the lowest airmass for that night.)
Optical Depth and Line Intensity of ES/BS Ratio Spectra
(These figures are referred as Figure 4 in the manuscript, and spreadsheets as Table II in manuscript.)
Here is a hasty manuscript describing (I hope understandable!) what I have done so far with the spectral stuff.
qiuj@bbso.njit.edu