Table 4
Best-fit results from FM90 model fits to the afterglow SEDs of 24 GRBs, all of which were best-fitted by a broken-power model in our initial SED analysis (see Table 1).
| GRB | Local-dusta | Power Law | αx ~ αo | ||||
| model | E(B − V) | χ2/d.o.f. | c 1 | E(B − V) | χ2/d.o.f. | (Y/N) | |
|
|
|||||||
| 050319 | mw |
|
58/78 |
|
|
62/78 | Y |
| 050820A | lmc | 0.06 ± 0.01 | 177/143 | 2.95 ± 0.25 | 0.23 ± 0.05 | 190/143 | N |
| 060206 | mw | <0.08 | 61/59 |
|
<0.03 | 84/59 | N |
| 060418 | smc |
|
19/23 |
|
<0.01 | 29/23 | N |
| 060729 | smc | 0.05 ± 0.01 | 176/191 |
|
<0.15 | 180/191 | Y |
| 061121 | lmc |
|
87/93 |
|
|
86/93 | N |
| 061126 | lmc |
|
170/140 |
|
0.36 ± 0.05 | 168/140 | N |
| 070110 | smc | <0.07 | 129/112 |
|
|
137/112 | Y |
| 080210 | lmc | 0.08 ± 0.01 | 23/25 |
|
0.09 ± 0.02 | 35/25 | N |
| 080411 | mw | <0.02 | 81/83 | b | 0.00 | 216/83 | Y |
| 080413B | mw |
|
78/69 |
|
|
75/69 | Y |
| 080430 | smc | <0.07 | 38/40 |
|
|
52/40 | Y |
| 080721 | mw | 0.13 ± 0.05 | 168/153 |
|
0.77 ± 0.06 | 168/153 | N |
| 080804 | lmc | 0.033 ± 0.004 | 38/42 | b | <0.01 | 92/42 | N |
| 080916A | smc | 0.21 ± 0.05 | 18/26 |
|
|
19/26 | N |
| 081121 | smc |
|
52/47 | b | <0.01 | 92/47 | N |
| 081203A | mw | 0.09 ± 0.01 | 76/80 |
|
0.23 ± 0.05 | 61/80 | Y |
| 081222 | mw |
|
34/46 | b | <0.01 | 155/46 | N |
| 090102 | mw | 0.13 ± 0.01 | 22/27 |
|
0.16 ± 0.02 | 35/27 | N |
| 090424 | mw | 0.37 ± 0.03 | 92/83 |
|
0.52 ± 0.08 | 95/83 | Y |
| 090618 | smc |
|
24/18 | <3.7 | <0.02 | 36/18 | Y |
| 091018 | smc | 0.033 ± 0.005 | 55/52 | b | 0.00 | 101/52 | N |
| 091029 | lmc | 0.02 ± 0.01 | 23/23 | b | <0.02 | 58/23 | Y |
| 091127 | lmc | <0.01 | 186/173 | b | 0.00 | 326/173 | N |
Notes. All FM90 model parameters were fixed to the best-fit values from the simultaneous SED analysis (see Table 3) apart from the coefficient c1, which determines the slope of the extinction curve. Column 8 indicates whether the optical and X-ray light curve decay rates are consistent (Y) or not (N) at epoch of the corresponding GRB afterglow SED. Those GRBs better fit by a single power-law spectral component and an FM90 host extinction curve are highlighted in bold (see text for details).
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