On the calibration of the relation between geometric albedo and polarimetric properties for the asteroids
Date Issued
2015
Author(s)
Description
We thank the Referee Dr K. Muinonen for his important comments and suggestions that led to substantial improvements of this paper. AC was partly supported by funds of the PRIN INAF 2011. RGH gratefully acknowledges financial support by CONICET through PIP 114-201101-00358.
Abstract
We present a new extensive analysis of the old problem of finding a satisfactory calibration of the relation between the geometric albedo and some measurable polarization properties of the asteroids. To achieve our goals, we use all polarimetric data at our disposal. For the purposes of calibration, we use a limited sample of objects for which we can be confident to know the albedo with good accuracy, according to previous investigations of other authors. We find a new set of updated calibration coefficients for the classical slope-albedo relation, but we generalize our analysis and we consider also alternative possibilities, including the use of other polarimetric parameters, one being proposed here for the first time, and the possibility to exclude from best-fitting analyses the asteroids having low albedos. We also consider a possible parabolic fit of the whole set of data.
Volume
451
Issue
4
Start page
3473
Issn Identifier
0035-8711
Ads BibCode
2015MNRAS.451.3473C
Rights
open.access
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