J/A+A/576/A8 ADAM: 3D asteroid shape reconstruction code (Viikinkoski+, 2015)
ADAM: a general method for using various data types in asteroid reconstruction.
Viikinkoski M., Kaasalainen M., Durech J.
<Astron. Astrophys. 576, A8 (2015)>
=2015A&A...576A...8V 2015A&A...576A...8V
ADC_Keywords: Models ; Solar system ; Minor planets
Keywords: methods: analytical, numerical - minor planets, asteroids: general
Abstract:
We introduce ADAM, the All-Data Asteroid Modelling algorithm. ADAM is
simple and universal since it handles all disk-resolved data types
(adaptive optics or other images, interferometry, and range-Doppler
radar data) in a uniform manner via the 2D Fourier transform, enabling
fast convergence in model optimization. The resolved data can be
combined with disk-integrated data (photometry). In the reconstruction
process, the difference between each data type is only a few code
lines defining the particular generalized projection from 3D onto a 2D
image plane. Occultation timings can be included as sparse
silhouettes, and thermal infrared data are efficiently handled with an
approximate algorithm that is sufficient in practice due to the
dominance of the high-contrast (boundary) pixels over the low-contrast
(interior) ones. This is of particular importance to the raw ALMA data
that can be directly handled by ADAM without having to construct the
standard image. We study the reliability of the inversion by using the
independent shape supports of function series and control-point
surfaces. When other data are lacking, one can carry out fast
nonconvex lightcurve-only inversion, but any shape models resulting
from it should only be taken as illustrative global-scale ones.
Description:
About the code: ADAM is a collection of routines for 3D asteroid shape
reconstruction from disk-resolved observations. Any combination of
lightcurves, adaptive optics images, HST/FGS data, range-Doppler radar
images and disk-resolved thermal images may be used as data sources.
The routines are implemented in a combination of MATLAB and C.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
readme.txt 225 19 Instructions to use to code
ADAM_v060.tar 512 18120 Compressed file with the complete ADAM code
(Version 0.60)
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Acknowledgements:
Matti Viikinkoski, matti.viikinkoski (at)tut.fi
(End) Patricia Vannier [CDS] 02-Feb-2015