Corrigendum: Design and operation of the ATLAS Transient Science Server (PASP, (2020) 132, 085002, 10.1088/1538-3873/ab936e)

In Smith et al. we published estimates of the volumetric rate of supernovae within 100 Mpc. These were incorrect and we present the correct values in this corrigendum. Unified Astronomy Thesaurus concepts: Surveys (1671); Supernovae (1668) We draw attention to an incorrect calculation of the volumetric rates of supernovae in Section 6.1 of Smith et al. (2020). The correct calculation is as follows. Within the 100 Mpc volume, we can estimate the simple “observed” volumetric rates for supernovae. The vast majority (521 of the 540) of transients were in the main ATLAS footprint of δ ≥-40° (82% of 4π) and since ±60° in R.A. from the Sun is unobservable and lost (33% of 4π), then the ATLAS survey footprint for these supernovae is approximately 55% of the full 4π sky with a 2 day cadence. The number of type Ia and CCSNe that we have detected within 100 Mpc within this sky area implies that the lower limit to the rate of supernova is RIa ≳ 3.8 × 10⁴ Gpc⁻³ yr⁻¹ for SNe Ia and RCC ≳ 6.4 × 10⁴ Gpc⁻³ yr⁻¹ for CCSNe. These lower limits to the rates are lower than we erroneously published in Smith et al. (2020). As it stands these are consistent with previously published SN rates, as cited in our original paper. A full treatment of the efficiency of recovery as a function of distance and Milky Way extinction, and the nature of the spectroscopically unclassified transients, are required to determine if this holds up with a more quantified analysis. We apologise for the error in the published calculation.