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 | 51/52 (98.08%) | 48/49 (97.96%) | 47/48 (97.92%) | 42/43 (97.67%) | 35/35 (100.00%) | 22/22 (100.00%) | 16/16 (100.00%) | 11/11 (100.00%) | 3/3 (100.00%) |
| March 2025 | 28/29 (96.55%) | 27/28 (96.43%) | 25/26 (96.15%) | 21/22 (95.45%) | 17/18 (94.44%) | 14/15 (93.33%) | 7/8 (87.50%) | 6/6 (100.00%) | 2/2 (100.00%) |
| April 2025 | 21/21 (100.00%) | 21/21 (100.00%) | 19/19 (100.00%) | 15/15 (100.00%) | 12/12 (100.00%) | 10/10 (100.00%) | 6/6 (100.00%) | 3/3 (100.00%) | 2/2 (100.00%) |
| May 2025 | 40/40 (100.00%) | 35/35 (100.00%) | 29/29 (100.00%) | 25/25 (100.00%) | 21/21 (100.00%) | 15/15 (100.00%) | 10/10 (100.00%) | 5/5 (100.00%) | 2/2 (100.00%) |
| June 2025 | 48/48 (100.00%) | 46/46 (100.00%) | 42/42 (100.00%) | 33/33 (100.00%) | 24/24 (100.00%) | 14/14 (100.00%) | 10/10 (100.00%) | 4/4 (100.00%) | 4/4 (100.00%) |
| July 2025 | 36/36 (100.00%) | 35/35 (100.00%) | 33/33 (100.00%) | 26/26 (100.00%) | 17/17 (100.00%) | 12/12 (100.00%) | 11/11 (100.00%) | 6/6 (100.00%) | 5/5 (100.00%) |
| August 2025 | 55/57 (96.49%) | 53/55 (96.36%) | 48/50 (96.00%) | 42/42 (100.00%) | 32/32 (100.00%) | 21/21 (100.00%) | 14/14 (100.00%) | 9/9 (100.00%) | 5/5 (100.00%) |
| September 2025 | 12/21 (57.14%) | 12/20 (60.00%) | 8/14 (57.14%) | 5/9 (55.56%) | 5/8 (62.50%) | 4/6 (66.67%) | 2/2 (100.00%) | 1/1 (100.00%) | 1/1 (100.00%) |
| Total | 293/306 (95.75%) | 279/291 (95.88%) | 253/263 (96.20%) | 210/216 (97.22%) | 164/168 (97.62%) | 113/116 (97.41%) | 77/78 (98.72%) | 45/45 (100.00%) | 24/24 (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.