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 | 27/29 (93.10%) | 26/28 (92.86%) | 24/26 (92.31%) | 20/22 (90.91%) | 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 | 46/47 (97.87%) | 43/43 (100.00%) | 40/40 (100.00%) | 31/31 (100.00%) | 22/22 (100.00%) | 14/14 (100.00%) | 10/10 (100.00%) | 4/4 (100.00%) | 4/4 (100.00%) |
| July 2025 | 9/17 (52.94%) | 9/16 (56.25%) | 8/15 (53.33%) | 6/12 (50.00%) | 5/7 (71.43%) | 5/5 (100.00%) | 3/3 (100.00%) | 1/1 (100.00%) | -- |
| Total | 196/208 (94.23%) | 184/194 (94.85%) | 169/179 (94.41%) | 140/149 (93.96%) | 113/116 (97.41%) | 81/82 (98.78%) | 53/54 (98.15%) | 30/30 (100.00%) | 13/13 (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.