Techniques d'observation spectroscopique d'astéroïdes
Techniques d'observation spectroscopique d'astéroïdes Techniques d'observation spectroscopique d'astéroïdes
tel-00785991, version 1 - 7 Feb 2013
List of Tables 2.1 The emission lines identification in spectrum of PG1634 +706. The line labels, their corresponding laboratory wavelengths, these wavelengths shifted with z= 1.34, and the wavelengths observed in the spectrum are presented. . . . . . . . 50 5.1 Summary of the results obtained by matching the asteroids spectra with spectra from the Relab database. For each asteroid, I show the best two matches, obtained by measuring the standard deviation (std. dev.) and the correlation coefficient (corr. coef.). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85 tel-00785991, version 1 - 7 Feb 2013 6.1 Some characteristics of the observed NEAs: orbit type, semi-major axis, eccentricity, inclination, absolute magnitude (H), and the delta-V. . . . . . . . . . 94 6.2 Log of NEAs observations. Their designations, date of observation with the fraction of the day for the mid time of the observation, the apparent magnitude, the phase angle, the heliocentric distance, the airmass at the mean UT of each observation, the integration time for each spectrum (ITime), and the number of cycles are shown. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95 6.3 The solar analogs used for data reduction in the case of the NEAs spectra. The airmass at the moment of observations and relative distance to the asteroid are presented. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95 6.4 Summary of results obtained by matching the asteroid spectra and de-reddened asteroid spectra with spectra from the Relab database. The comparison was made using a χ 2 method and a selection of the obtained results was done based on spectral features (band, band-gap, concavity) positions, and albedo values. For (5620) Jasonwheeler, a de-reddening model was not applied . . . . . . . . 99 6.5 Slope and C s parameter for the S-type objects studied in this article. The calculation was made by normalization of spectra to 0.55 µm. Objects marked with (*) are normalized to 1.25 µm (only for NIR part). . . . . . . . . . . . . . . . 110 6.6 Computed parameters from the Cloutis et al. [1986a] model applied to the V+NIR spectra of (1917) Cuyo, (8567) 1996 HW1, and (16960) 1998 QS52. The estimation error for band centers (BI, BII) is ±0.005. . . . . . . . . . . . . . . . . 111 7.1 Some characteristics of our observed MBAs: semi-major axis, eccentricity, inclination, absolute magnitude (H), and orbital period. . . . . . . . . . . . . . . 114 7.2 Log of asteroids observations. Asteroid designation, date of observation with the fraction of the day for the mid time of the observation, apparent magnitude, phase angle, heliocentric distance, the airmass at the mean UT of each observation, the integration time for each spectrum (ITime), and the number of cycles are presented. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114
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List of Tables<br />
2.1 The emission lines identification in spectrum of PG1634 +706. The line labels,<br />
their corresponding laboratory wavelengths, these wavelengths shifted with z=<br />
1.34, and the wavelengths observed in the spectrum are presented. . . . . . . . 50<br />
5.1 Summary of the results obtained by matching the asteroids spectra with spectra<br />
from the Relab database. For each asteroid, I show the best two matches,<br />
obtained by measuring the standard deviation (std. dev.) and the correlation<br />
coefficient (corr. coef.). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85<br />
tel-00785991, version 1 - 7 Feb 2013<br />
6.1 Some characteristics of the observed NEAs: orbit type, semi-major axis, eccentricity,<br />
inclination, absolute magnitude (H), and the delta-V. . . . . . . . . . 94<br />
6.2 Log of NEAs observations. Their designations, date of observation with the<br />
fraction of the day for the mid time of the observation, the apparent magnitude,<br />
the phase angle, the heliocentric distance, the airmass at the mean UT of each<br />
observation, the integration time for each spectrum (ITime), and the number of<br />
cycles are shown. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95<br />
6.3 The solar analogs used for data reduction in the case of the NEAs spectra. The<br />
airmass at the moment of observations and relative distance to the asteroid are<br />
presented. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95<br />
6.4 Summary of results obtained by matching the asteroid spectra and de-reddened<br />
asteroid spectra with spectra from the Relab database. The comparison was<br />
made using a χ 2 method and a selection of the obtained results was done based<br />
on spectral features (band, band-gap, concavity) positions, and albedo values.<br />
For (5620) Jasonwheeler, a de-reddening model was not applied . . . . . . . . 99<br />
6.5 Slope and C s parameter for the S-type objects studied in this article. The calculation<br />
was made by normalization of spectra to 0.55 µm. Objects marked with<br />
(*) are normalized to 1.25 µm (only for NIR part). . . . . . . . . . . . . . . . 110<br />
6.6 Computed parameters from the Cloutis et al. [1986a] model applied to the V+NIR<br />
spectra of (1917) Cuyo, (8567) 1996 HW1, and (16960) 1998 QS52. The estimation<br />
error for band centers (BI, BII) is ±0.005. . . . . . . . . . . . . . . . . 111<br />
7.1 Some characteristics of our observed MBAs: semi-major axis, eccentricity, inclination,<br />
absolute magnitude (H), and orbital period. . . . . . . . . . . . . . . 114<br />
7.2 Log of asteroids observations. Asteroid designation, date of observation with<br />
the fraction of the day for the mid time of the observation, apparent magnitude,<br />
phase angle, heliocentric distance, the airmass at the mean UT of each observation,<br />
the integration time for each spectrum (ITime), and the number of cycles<br />
are presented. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114