Table 2
Derived quantities for the HDF850.1 merger galaxies, and the effect of lensing.
| Parameter | North | South | Dust |
| galaxy | galaxy | continuum, | |
| C+ line | C+ line | both galaxies | |
|
|
|||
| Uncorrected for lensing: | |||
|
|
|||
| Measured (Δα,Δδ) offset from elliptical | (−0.71′′, −0.40′′) | (−0.68′′, −0.71′′) | (−0.68′′, −0.58′′) |
| Apparent luminosity [L⊙] | LC+ = 2.8 × 109 | LC+ = 1.2 × 109 | LFIR = 6.0 × 1012 |
| Apparent line luminosity [K km s-1 pc2] |
|
|
– |
|
|
|||
| Corrected for lensing: | |||
|
|
|||
| True, undeflected (Δα,Δδ) offset from elliptical | (−0.45′′, −0.25′′) | (−0.50′′, −0.50′′) | (−0.47′′, −0.43′′) |
| lens magnification factor | 1.7 | 1.5 | 1.6 |
| Corrected luminosity [L⊙] | LC+ = 1.6 × 109 | LC+ = 8.2 × 108 | LFIR = 3.8 × 1012 |
| Corrected line luminosity [K km s-1 pc2] |
|
|
– |
| Gas Mass (H2+He) [M⊙] | Mgas = 1.5 × 1010 | Mgas = 7.5 × 109 | – |
| Corrected angular diameters | 0.4′′ | 0.3′′ | 0.4′′ |
| True radius | 1.3 kpc | 0.9 kpc | 1.3 kpc |
Notes. Positions are from Gaussian fits in the (u,v) plane, with errors of ± 0.004s in RA and ± 0.03′′ in Dec. LFIR is for emitted wavelengths 40 to 120 μm; LIR (5 to 1000 μm) is typically 30% higher. Lens model: singular isothermal sphere at z = 1.224, with velocity dispersion σ = 150 km s-1. Derived values are for DA = 1.299Gpc at z = 5.185, and 6.295 kpc(arcsec)-1, for assumed values of ΩM = 0.27, ΩΛ = 0.73, and H0 = 71 km s-1 Mpc-1 (for formula, see e.g., Buchalter et al. 1998).
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