CATS150 Scanning Summary: April



ZTF ID Date Scanner Classified (TNS/Fritz)? Host z Mag Age (days) Forced phot. requested? Phot. follow-up Sure if real? Spec follow-up Priority Comment
ZTF25aalvbwm 2025-04-07 Kaustav Yes 0.019237" 17.6 ~8 Yes -- Yes -- -- TNS SN IIn
ZTF25aalzmga 2025-04-08 Steve Yes 0.007165" 16.6 unclear Yes -- Yes -- -- SN II, SEDm spectrum
ZTF25aalughb 2025-04-08 Steve No 0.02409" 17.0 >4 Yes -- Yes SEDM P2 Jesper triggered SEDm, priority bumped up to 2.5. Now classified as a Ia.
ZTF25aamazjk 2025-04-08 Steve No --" -- -- Yes -- Yes -- -- The redshift refers to the galaxy to the right. Redshift information are not consistent: 0.02 vs 0.09.
ZTF25aalthwc 2025-04-09 Steve Yes 0.028029" 16.6 ~9 Yes -- Yes -- -- TNS SN Ia
ZTF25aaknjda 2025-04-09 Steve Yes 0.0218" 17.7 80 Yes -- Yes -- -- TNS SN Ia. Missed by ZTF. ZTF has non-detections where ATLAS has clear detections
ZTF25aalximq 2025-04-09 Steve No 0.024" 18.6 unclear Yes -- Yes -- -- Very strange light curve for a SN. Could be going from pre-cursor to SN. Might be dust obscurred. Transient could be a few 10 days old. SEDm spectrum exists. Needs a bigger telescope.
ZTF25aamhjku 2025-04-09 Steve No 0.0259" 19.2 >4 Yes -- Yes -- -- Luminosity of only -16. MW E(B-V) = 0.14
ZTF25aalyfoi 2025-04-10 Steve No 0.0155" 17.0 ~15 Yes -- Yes -- -- host has an AGN, offset by 0.7'' from the nucleus, because of the offset it would be worth checking
ZTF25aamjgvd 2025-04-10 Steve No 0.03" 19.9 1 Yes SEDM No -- -- 29.74 kpc from a z=0.03 galaxy
ZTF25aameppw 2025-04-10 Steve No 0.02" 19.2 4 Yes -- Yes -- -- Redshift is a photo-z
ZTF25aaknnlf 2025-04-11 Steve No 0.0302" 19.4 >21 Yes -- Yes -- -- > 21days old
ZTF25aajsivt 2025-04-11 Steve No 0.03" 18.8 >20 Yes -- Yes SEDM P2 photo-z
ZTF25aalvqbq 2025-04-11 Steve No 0.0276" 17.2 20 Yes -- Yes SEDM P3 SEDm triggered by Jesper
ZTF25aambsqu 2025-04-11 Steve No 0.03" 17.8 5 Yes -- Yes SEDM P1 photo-z, Jesper triggered SEDm at P1
ZTF23absjbyu 2025-04-15 Kaustav No 0.0288" 17.0 4 No -- Yes -- -- 2 mag rise in last 4 days
ZTF25aanezba 2025-04-16 Kaustav No 0.0198" 19.4 -- No -- Yes SEDM, NGPS P3 M~ -15.5
ZTF25aanjafq 2025-04-19 Kaustav No 0.027" 18.5 <4 Yes -- Yes NGPS, SEDM P4 18.5 now, could be young. assigned ATLAS fp
ZTF25aanfdbz 2025-04-19 Kaustav No 0.0257" 19.0 <4 No -- Yes NGPS P4 -15.8, on an edge-on galaxy
ZTF25aankyie 2025-04-20 Kaustav No 0.0304" 19.0 <4 No -- Yes NGPS, SEDM P4 -17, slight offset from nucleus, looks real
ZTF25aanpvix 2025-04-21 Kaustav No 0.0262" 18.5 <5 No -- Yes NGPS, SEDM P4 young SN
ZTF25aanmfji 2025-04-21 Kaustav No 0.008" 19.3 unclear No -- Yes NGPS, SEDM P3 -13 mag. 36 Mpc
ZTF25aaocnsp 2025-04-23 Wynn No 0.0275" 19.8 <3 Yes -- Yes NGPS, SEDM P3 young, -15.5mag (SN Ia)
ZTF25aaofuee 2025-04-30 Kaustav No 0.023" 18.0 <6 No -- Yes SEDM, Kast P4 on the rise, young SN