Table 4
Comparisons of HyperLeda and SDSS DR7 measurements with ours for SN host galaxies.
| Quantity | Ref. cat. | a | b | Dispersion |
|
|
||||
| t | HyperLeda | 0.93 ± 0.01 | −0.29 ± 0.05 | 1.48 |
| log a | HyperLeda | 0.93 ± 0.00 | 0.06 ± 0.01 | 0.06 |
| log a | SDSS | 0.87 ± 0.01 | 0.25 ± 0.01 | 0.07 |
| b/a | HyperLeda | 0.94 ± 0.01 | 0.04 ± 0.01 | 0.08 |
| b/a | SDSS | 0.97 ± 0.01 | 0.01 ± 0.01 | 0.07 |
| PA | HyperLeda | 1.00 ± 0.00 | −0.94 ± 0.49 | 5.72 |
| PA | SDSS | 1.00 ± 0.00 | −0.56 ± 0.47 | 4.57 |
| mag | HyperLeda | 0.98 ± 0.00 | 0.66 ± 0.06 | 0.22 |
| mag | SDSS | 0.87 ± 0.00 | 2.01 ± 0.06 | 0.25 |
Notes. Columns 3 (a) and 4 (b) represent the robust linear fits (with iterative rejection of outliers) of xtheirs = a xours + b. The last column (Dispersion) is computed as 1.483 times the median absolute deviation (which corresponds to σ for Gaussian distributions) of the residuals from our best-fit trend. Cases with no measurements (given arbitrary values such as 99) have been discarded. The SDSS magnitude is cModelMag in the g-band. The PA dispersion is in degrees.
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