CATS150 Scanning Summary: May



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
ZTF25aaoiard 2025-05-02 Viraj No 0.0194" 19.0 unclear No -- Yes SEDM, NGPS P3 red, -16
ZTF25aapenec 2025-05-02 Viraj No 0.0195" 19.5 unclear No -- Yes NGPS P4 -15.2
ZTF25aanyoqd 2025-05-02 Viraj No 0.022" 20.5 unclear Yes -- Yes -- -- -15, 99 Mpc
ZTF19acpmbvd 2025-05-02 Viraj Yes 0.0066" 19.5 2000 No -- Yes -- -- old spectrum from GROWTH marshal, LBV, bumpy lightcurve, -13
ZTF24aaizmfj 2025-05-02 Viraj No 0.017" 20.5 300 Yes -- Yes NGPS P3 -14, but could be background, distant galaxy
ZTF25aaoecgp 2025-05-02 Viraj No 0.0141" 20.0 10 No -- Yes NGPS P4 -14, 60 Mpc
ZTF25aadfwkw 2025-05-02 Viraj No 0.008" 20.0 300 No -- Yes NGPS P1 long-lived, could be background/foreground
ZTF25aapgxef 2025-05-03 Viraj Yes 0.028" 17.0 30 No -- Yes -- -- -18, 126 Mpc
ZTF25aaozquu 2025-05-03 Viraj No --" 17.0 unclear Yes -- Yes SEDM P2 M31 nova most likely
ZTF25aaozqwm 2025-05-03 Viraj No --" 17.0 unclear Yes -- Yes SEDM P2 M31 nova most likely
ZTF25aapoljr 2025-05-04 Viraj No 0.028" 20.0 5 No -- Yes NGPS P3 -15.5 mag, 120 Mpc
ZTF25aapnrnk 2025-05-04 Viraj No 0.0235" 20.0 30 Yes SEDM No -- -- -15, nuclear, not sure if real
ZTF25aaozsgb 2025-05-04 Viraj Yes 0.01" 18.0 5 No -- Yes -- -- -15, spec says type Ia?
ZTF25aapkqdn 2025-05-04 Viraj No 0.031" 19.0 15 No -- Yes SEDM, NGPS P2 Host photoz = 0.031
ZTF25aapsiow 2025-05-08 Steve No 0.0172" 18.0 >4 Yes -- Yes SEDM P3 -16.4 mag but EBV MW = 0.43 mag, 34 Mpc
ZTF25aapafwq 2025-05-08 Steve No 0.0281" 18.5 >12 Yes -- Yes SEDM P3 -17 mag
ZTF25aaprfzh 2025-05-09 Steve Yes 0.019" 17.5 15 Yes -- Yes -- -- IIb at -17.2
ZTF25aapupti 2025-05-09 Steve No 0.008" 19.5 <1 day Yes -- No -- -- 200 arcsec from a nearby galaxy (~34 kpc). Galaxy emission does not extend so far. Host ID questionable or Ia. SEDM photometry requested to verify that it's real.
ZTF19aahcvkc 2025-05-09 Steve No 0.030211" 18.5 ??? Yes -- Yes -- -- Nuclear activity with a >2000 days baseline. Unlikely to be a SN but saved in CATS150-flag.
ZTF25aapswye 2025-05-09 Steve No 0.0233" 19.1 ??? Yes -- Yes -- -- Transient in the nucleus. The light curve is rising. Unclear whether a new transient or nuclear activity
ZTF25aapxtna 2025-05-10 Steve No 0.028807" 19.5 <5 days Yes -- Yes NGPS P3 Massive dust lane at the transient location.
ZTF23abieefo 2025-05-10 Steve No 0.0298" 18.5 ??? Yes -- No -- -- Nuclear transient, not sure whether real
ZTF25aaovvcg 2025-05-10 Steve No 0.0216" 18.5 ??? Yes -- No SEDM P3 Transient in the centre of its hosts. Very busy region. Subtraction a bit doubtful
ZTF25aapwhnu 2025-05-11 Steve No 0.032737" 17.8 10 Yes -- Yes SEDM, NGPS P3 At the CAT150 distance cut
ZTF25aapzvrh 2025-05-11 Steve No 0.0127" 18.3 -- Yes -- Yes SEDM, NGPS P3 only -15.7 mag
ZTF25aaprggu 2025-05-11 Steve No 0.0302" 17.7 5 Yes -- Yes NGPS, SEDM P3 --
ZTF25aapysdd 2025-05-14 Viraj No -0.00015" 18.0 7 No -- Yes SEDM P4 m31 nova likely, rapid brightening
ZTF25aaqhkyi 2025-05-15 Viraj Yes 0.0267" 16.5 unclear No -- Yes -- -- Ia classified on TNS, -19 mag
ZTF25aaqdxqj 2025-05-15 Viraj No 0.016" 18.5 5? Yes -- No -- -- -15.5, iffyish sub but likely real, need more photometry
ZTF25aaprgxk 2025-05-15 Viraj No 0.0255" 17.0 20 No -- Yes SEDM P3 -18
ZTF25aaqoagl 2025-05-16 Viraj No 0.028" 18.0 20 No -- Yes SEDM P3 -18, likelyIa, has SEDM spec
ZTF25aaqmqqc 2025-05-16 Viraj No --" -- -- -- -- -- -- -- duplicate of old nuclear source, likely not real
ZTF25aaqksiw 2025-05-18 Viraj No 0.0178" 16.5 unclear No -- Yes SEDM P3 bright, luminous, no age constraint
ZTF25aaqoukg 2025-05-18 Viraj Yes 0.016" 18.0 <5 -- -- -- -- -- young Ia
ZTF25aaqvwjj 2025-05-20 Nabeel No 0.0245" 19.8 ~15 Yes SEDM Yes NGPS, SOAR P4 Low lum, already 20 mag and fading, 110 Mpc
ZTF25aaqvqsh 2025-05-20 Nabeel No 0.0288" 19.6 unclear Yes SEDM Yes NGPS, SOAR P4 -16, atlas history maybe shows two peaks
ZTF25aaqsuda 2025-05-20 Nabeel No 0.0325" 20.0 <3 Yes SEDM Yes NGPS, SOAR P2 quite young, -15.8, nuclear
ZTF25aaqbltp 2025-05-20 Nabeel No 0.0255" 18.5 10 Yes -- Yes NGPS, LT P2 -17.5
ZTF25aaqxyfn 2025-05-21 Nabeel No 0.0235" 20.0 <10 Yes SEDM Yes NGPS P3 -15, mostly flat lc, 20 mag
ZTF25aaqwejm 2025-05-21 Nabeel No --" 17.3 <5 Yes -- Yes SEDM P3 M31 nova likely
ZTF25aaprlyv 2025-05-21 Nabeel No 0.0222" 19.8 30? Yes -- Yes NGPS P3 nuclear, -15, pretty sure real
ZTF25aaqqfsk 2025-05-22 Nabeel No 0.0107" 19.8 20? Yes SEDM Yes NGPS P3 in faint 48 Mpc host, peaked at <-15 in ATLAS, only <-14 in ZTF
ZTF25aarenwi 2025-05-22 Nabeel No 0.0325" 20.0 unclear Yes SEDM No NGPS P2 near nuclear in 148 Mpc host, not sure if real
ZTF25aapjhau 2025-05-23 Nabeel No 0.0283" 20.5 ~30 Yes -- Yes NGPS P3 flat lc, -15, quite red
ZTF25aalwzfn 2025-05-25 Nabeel No 0.0271" 19.8 30 Yes -- Yes NGPS P3 flat for a month, -16
ZTF25aarvdib 2025-05-25 Nabeel No 0.025" 17.0 <5 Yes SEDM No -- -- diff image looks strange, not sure if real, maybe had precursor?
ZTF25aarodfq 2025-05-25 Nabeel Yes 0.0112" 19.5 7 Yes -- Yes -- -- 50 Mpc, flashing, radio triggered
ZTF25aarnyuv 2025-05-25 Nabeel No 0.0218" 17.0 15 Yes -- Yes SEDM P2 slow rise, -18
ZTF25aasaovv 2025-05-26 Nabeel No 0.0319" 19.7 4 Yes SEDM Yes SEDM P1 young, 145 Mpc, -16, quite red?
ZTF25aarxine 2025-05-29 Anjasha No 0.0242" 19.1 5 Yes SEDM Yes Kast, SEDM P3 -16 mag, 109 Mpc
ZTF25aatdvzt 2025-05-30 Anjasha No 0.0167" 17.5 8 Yes SEDM No SEDM, Kast P3 -16.8 mag, 0.8 arcsec from host, ATLAS shows rising lc
ZTF25aasltmi 2025-05-31 Anjasha Yes 0.02765" 18.3 5 Yes -- Yes -- -- -17.3 mag, 125 Mpc, TNS classified as SN only