Spatially resolved spectroscopy of the debris disk HD 32297 - Further evidence of small dust grains

T. Bhowmik; A. Boccaletti; P. Thébault; Q. Kral; J. Mazoyer; J. Milli; A. L. Maire; R. G. van Holstein; J.-C. Augereau; P. Baudoz; M. Feldt; R. Galicher; T. Henning; A.-M. Lagrange; J. Olofsson; E. Pantin; C. Perrot

doi:10.1051/0004-6361/201936076

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Volume 630 (October 2019)

A&A, 630 (2019) A85

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Table 2

Parameters that provide the best GRaTer model fitting of the IRDIS BB_H science image with the one HG phase function.

	NE side	SW side	Full disk
i (°)	88.2 ± 0.4	88.3 ± 0.3	88.3 ± 0.3 (88.5)
R₀ (au)	136.8 ± 10.0	129.4 ± 8.4	134.7 ± 9.3 (130)
α_in	6.00 ± 4.00	6.00 ± 4.00	6.00 ± 4.00 (10)
α_out	−6.0 ± 0.9	−5.7 ± 0.8	−6.17 ± 1.17 (−6)
g	0.55 ± 0.14	0.49 ± 0.14	0.55 ± 0.13 (0.6)
h	0.026 ± 0.005	0.024 ± 0.006	0.020 ± 0.006 (0.020)

Notes. The model parameters corresponding to the smallest χ² value are provided in brackets in the fourth column. The mean value of the distribution and the dispersion is used for α_in as its histogram has a flat distribution.

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