CATS150 is a volume-limited supernova sample. We attempt to save and classify all local (<150 Mpc / z<0.0331) SN found in the ZTF alert stream. We try to save transients with a physical seperation less than 30 kpc from their associated NED LVS host galaxy (for z>0.01) or with a visible association with the host galaxy (for z<0.01).
Figure 1. Cumulative completeness for all saved CATS150 sources as a function of apparent magnitude. The sources used are filtered to be brighter than -10 in absolute magnitude (this removes some non-SN sources such as nearby classical novae).
Table 1. Classification success statistics by limiting magnitude for sources within the CATS150 volume.
| Peak app. mag | ≤ 20.0 | ≤ 19.5 | ≤ 19.0 | ≤ 18.5 | ≤ 18.0 | ≤ 17.5 | ≤ 17.0 | ≤ 16.5 | ≤ 16.0 |
|---|---|---|---|---|---|---|---|---|---|
| January 2025 | 2/2 (100.00%) | 2/2 (100.00%) | 2/2 (100.00%) | 1/1 (100.00%) | 1/1 (100.00%) | 1/1 (100.00%) | 1/1 (100.00%) | -- | -- |
| February 2025 | 52/53 (98.11%) | 49/50 (98.00%) | 48/49 (97.96%) | 42/43 (97.67%) | 36/36 (100.00%) | 22/22 (100.00%) | 17/17 (100.00%) | 11/11 (100.00%) | 2/2 (100.00%) |
| March 2025 | 24/30 (80.00%) | 24/28 (85.71%) | 22/25 (88.00%) | 19/22 (86.36%) | 15/17 (88.24%) | 12/14 (85.71%) | 5/6 (83.33%) | 5/5 (100.00%) | 1/1 (100.00%) |
| Total | 78/85 (91.76%) | 75/80 (93.75%) | 72/76 (94.74%) | 62/66 (93.94%) | 52/54 (96.30%) | 35/37 (94.59%) | 23/24 (95.83%) | 16/16 (100.00%) | 3/3 (100.00%) |
Figure 2. NED LVS Host galaxy separation for all saved CATS150 sources as a function of Date saved.
Figure 3. Peak Apparent Magnitude for all saved CATS150 sources as a function of Date saved.
Figure 4. Peak Absolute Magnitude for all saved CATS150 sources as a function of Date saved.