Table 2
Filter and performance estimates of ELT and LIFE.
| Filter | λcen | IWA | Sensitivitya |
|---|---|---|---|
| (μm) | (mas) | (μJy) | |
| ELT | |||
| K | 2.2 | 24 | 0.008 |
| L | 3.8 | 42 | 0.263 |
| N | 11.6 | 128 | 17.530 |
| LIFE | |||
| F560W | 5.6 | 5 | 0.056 |
| F1000W | 10 | 8 | 0.188 |
Notes. We assume that the sensitivity limits are achieved down to separations as small as the listed inner working angles (IWA). (a) Sensitivities are given as 5-σ detection limits in 5 h of on-source integration time. It is assumed that sensitivities scale inversely with the square root of the integration time. The ELT K band sensitivity is based on the ELT simulator (https://www.eso.org/observing/etc/) and assumes a pixel scale of 5 mas px−1, a laser tomography adaptive optics (LTAO) system and an airmass of 1.2. The sensitivities for ELT L and N band are updates to the values for the METIS instrument (METIS consortium, priv. comm.; cf. Quanz et al. 2015). The sensitivities for LIFE are based on the values presented in Kammerer & Quanz (2018). More detailed investigations, also concerning the final contrast performance of the various instruments, are required in the future to refine the detection limits.
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