Showing results 1 to 50 out of 269
Released: 2026-08-07 15:17:50
Reclassification of SN 2026sqf, the nearest Type Ia-CSM to-date
Nabeel Rehemtulla (Northwestern), Wynn Jacobson-Galán (Caltech), Lindsey Kwok (Northwestern), Adam A. Miller (Northwest…
Source Group: ZTF
Related Objects:
2026sqf [ZTF26abfmmvq]
RA, DEC:10:38:47.961, +53:30:34.10
(159.699839, 53.509471)
Redshift:0.003312
Type:SN Ia-CSM
Related Notes:
We reclassify SN 2026sqf as a Type Ia-CSM SN, affirming the original proposal by Midavaine et al. (AstroNote 2026-230). Our NOT/ALFOSC spectra reveal features characteristic of Type Ia SNe (Fe III & …
Released: 2026-08-03 23:41:47
Precursor Watch: Transformation of Precursor Candidate AT2026sfn into Type IIn Supernova
Wynn Jacobson-Galán, K-Ryan Hinds, Sam Rose, Kaustav K. Das, Mansi Kasliwal, Theophile Jegou du Laz, Thomas Culino, Chr…
Source Group: ZTF
Related Objects:
2026sfn [ZTF26abgbpyv]
RA, DEC:21:28:47.590, +20:31:03.21
(322.198290, 20.517559)
Redshift:0.0177
Type:SN IIn
We report the recent explosion of precursor candidate AT2026sfn as a Type IIn supernova, confirming the prediction made in the previous “Precursor Watch” Astronote 2026-217.
Released: 2026-07-30 17:52:52
ZTF discovery of a fast and red transient AT2026wki/ZTF26abkoycd
James Freeburn, Anirudh Salgundi, Igor Andreoni (UNC), Thomas Culino (Caltech), Sushant Sharma Chaudhary, Michael W. Co…
Source Group: ZTF
Keywords: Transient
Related Objects:
2026wki [ZTF26abkoycd]
RA, DEC:19:41:08.176, +60:49:17.78
(295.284065, 60.821605)
Redshift:
Type:
We report observations of the red and fast fading transient AT2026wki/ZTF26abkoycd, identified in the ZTF alert stream. The transient faded by ~1.1 mag/day in g-band and its color is red (g-r~0.2 mag…
Released: 2026-07-22 20:54:17
Identificationa and follow-up observations of spectroscopically featureless and bright nuclear transient
K-Ryan Hinds, Christoffer Fremling, Mansi Kasliwal, Sam Rose, Maggie Li, Wynn Jacobson-Galán (Caltech), Avinash Singh (…
Source Group: ZTF
Related Objects:
2026plb [ZTF26abbwmoo]
RA, DEC:20:56:47.260, -18:31:04.49
(314.196917, -18.517914)
Redshift:0.03
Type:SN IIn
We report the ongoing evolution of the bright, spectroscopically featureless nuclear transient ZTF26abbwmoo/AT 2026plb.
Released: 2026-07-17 17:38:07
ZTF report of the luminous nuclear transient ZTF26aazzexf / AT2026pwc as a possible TDE-featureless
Erica Hammerstein (UC Berkeley), Itai Sfaradi (UC Berkeley), Ryan Chornock (UC Berkeley), Max Velasquez (UC Berkeley), …
Source Group: ZTF
Keywords: TDE
Related Objects:
2026pwc [ZTF26aazzexf]
RA, DEC:13:11:20.569, +79:19:36.02
(197.835704, 79.326671)
Redshift:0.526
Type:TDE-featureless
We report the follow-up observations of ZTF26aazzexf / AT2026pwc which indicate a possible TDE origin. The source was selected by the tdescore ML classifier (Stein+2024, doi: 10.3847/2041-8213/ad3337…
Released: 2026-07-14 19:11:39
Precursor Watch: Identification and Spectroscopic Follow-up of Low Luminosity Transients from ZTF and Rubin/LSST
Wynn Jacobson-Galán, K-Ryan Hinds, Sam Rose, Kaustav K. Das, Mansi Kasliwal, Theophile Jegou du Laz, Thomas Culino, Chr…
Source Group: ZTF
Related Objects:
2026sfn [ZTF26abgbpyv]
RA, DEC:21:28:47.590, +20:31:03.21
(322.198290, 20.517559)
Redshift:0.0177
Type:SN IIn
,
2026srw [ZTF26abctnjz]
RA, DEC:22:30:36.777, -00:06:36.54
(337.653236, -0.110149)
Redshift:0.0053
Type:Impostor-SN
,
2026qzl [LSST-AP-DO-170591540574421162]
RA, DEC:23:09:23.069, +01:00:10.50
(347.346122, 1.002916)
Redshift:
Type:
We report identification and spectroscopic observations of low luminosity transients and supernova precursor candidates in the ZTF and Rubin/LSST alert streams.
Released: 2026-07-14 05:47:45
Classification of a Fast and Red Optical Transient in the LSST Alert Stream (170631094842425480 / AT 2026tim)
K-Ryan Hinds (Caltech), Daniel Perley (LJMU), Mansi Kasliwal (Caltech), Sam Whitebook (Caltech), Andrei-Alexandru Crist…
Source Group: ZTF
Related Objects:
2026tim [170631094842425480]
RA, DEC:20:07:41.012, -29:34:37.01
(301.920885, -29.576947)
Redshift:
Type:
Related Notes:
We report the classification of a fast and red transient in the LSST alert stream (170631094842425480 / AT 2026tim) as stellar variability.
Released: 2026-07-10 02:10:58
Identification of a Fast and Red Optical Transient in the LSST Alert Stream (170631094842425480 / AT 2026tim)
Michael Camilo (Cornell), Anna Y. Q. Ho (Cornell), Daniel Perley (LJMU), and Adam Miller (Northwestern)
Source Group: ZTF
Related Objects:
2026tim [170631094842425480]
RA, DEC:20:07:41.012, -29:34:37.01
(301.920885, -29.576947)
Redshift:
Type:
We report the identification of a fast and red transient in the LSST alert stream (170631094842425480 / AT 2026tim). It has a peak apparent extinction-corrected magnitude of m_z ~ 22.2 mag.
Released: 2026-06-20 18:02:35
Late-Time Re-brightening of AT 2025amdo Identified by ORACLE-2 Omni
V. G. Shah, C. Liu, N. Rehemtulla, A. A. Miller (Northwestern, CIERA), J. Sollerman, and A. Singh (Stockholm University…
Source Group: ZTF
Related Objects:
2025amdo
RA, DEC:10:37:14.965, +30:37:29.09
(159.312353, 30.624747)
Redshift:0.08
Type:SN I
,
2023aew
RA, DEC:17:40:51.370, +66:12:22.75
(265.214042, 66.206319)
Redshift:0.025
Type:SN IIb
We report a late-time re-brightening of AT 2025amdo (~185 days after the initial peak) identified by ORACLE-2 Omni, a multimodal hierarchical classifier developed for real-time monitoring of the Zwic…
Released: 2026-06-16 15:46:17
Chandra X-ray Observatory Non-detection of Type Icn SN 2026obc
Wynn Jacobson-Galán (Caltech), Rahul Jayaraman (Cornell), Gaurav Waratkar (Caltech), Anjasha Gangopadhyay (OKC, Stockho…
Source Group: ZTF
Related Objects:
2026obc [ZTF26aayznam]
RA, DEC:01:07:49.433, +41:59:43.39
(16.955971, 41.995386)
Redshift:0.0195
Type:SN Icn
We report a non-detection of SN2026obc in X-ray data from the Chandra X-ray Observatory.
Released: 2026-06-12 13:06:53
NOEMA Upper Limits on SN2026obc
Michael Camilo, Anna Ho (Cornell), Michael Bremer (IRAM)
Source Group: ZTF
Related Objects:
2026obc
RA, DEC:01:07:49.433, +41:59:43.39
(16.955971, 41.995386)
Redshift:0.0195
Type:SN Icn
We report the 100 GHz non-detection of SN 2026obc
Released: 2026-06-03 18:05:56
Classification of 2026obc/ZTF26aayznam as a SN Icn z = 0.0195 (85 Mpc)
Jacob Wise (LJMU), Daniel Perley (LJMU), Rahul Jayaraman (Cornell), Gokul Srinivasaragavan (UMD), K-Ryan Hinds (Caltech…
Source Group: ZTF
Related Objects:
2026obc [ZTF26aayznam]
RA, DEC:01:07:49.433, +41:59:43.39
(16.955971, 41.995386)
Redshift:0.0195
Type:SN Icn
,
2019jc [ATLAS19aep]
RA, DEC:21:55:40.993, +24:54:20.67
(328.920804, 24.905742)
Redshift:0.01948
Type:SN Icn
Related Notes: ,
We present P200 NGPS spectroscopic and Liverpool TelescopeLT IO:O photometric observations of AT2026obc/ZTF26aayznam. We find it to show strong C II, C III and C IV P-Cygni features with a width of ~…
Released: 2026-06-02 15:30:03
Identification of AT2026obc: a Rapidly Rising, Possibly Luminous Blue Transient
Anna Y. Q. Ho (Cornell), Jacob Wise (LJMU), Jesper Sollerman (OKC) on behalf of a larger collaboration
Source Group: ZTF
Related Objects:
2026obc
RA, DEC:01:07:49.433, +41:59:43.39
(16.955971, 41.995386)
Redshift:0.0195
Type:SN Icn
We report the identification of a rapidly brightening (0.4 mag/day), blue (g-r = -0.35 mag), possibly luminous (M = -21.3 mag) transient. We encourage follow-up observations to determine whether the …
Released: 2026-05-31 17:33:09
Spectroscopic Classification of the Strongly Lensed Type Ia Supernova SN 2026ngr at z = 0.95
C. Liu, L. Kwok (Northwestern, CIERA), A. Goobar, J. Johansson (Stockholm University), J. Hinkle (UIUC)
Source Group: ZTF
Related Objects:
2026ngr [ZTF26aaxhpdm]
RA, DEC:13:58:24.302, -03:02:49.29
(209.601256, -3.047026)
Redshift:0.95
Type:SN Ia
We report the Magellan/FIRE near-infrared spectroscopic classification of the strongly lensed supernova candidate SN 2026ngr. Cross-correlation template matching confirms the transient is a Type Ia s…
Released: 2026-05-30 08:25:43
ZTF classification of ZTF26aavrgaw / AT2026nuq and ZTF26aasemes / AT2026kce as likely TDEs
Erica Hammerstein (UC Berkeley), Ryan Chornock (UC Berkeley), Itai Sfaradi (UC Berkeley), Jonathan Carney (UNC), Robert…
Source Group: ZTF
Related Objects:
2026nuq [ZTF26aavrgaw]
RA, DEC:14:43:37.083, +58:53:08.27
(220.904511, 58.885630)
Redshift:0.16
Type:TDE-H-He
,
2026kce [ZTF26aasemes]
RA, DEC:08:51:41.457, +42:50:34.82
(132.922739, 42.843004)
Redshift:0.18
Type:TDE-H
We report the classification of the optical transients ZTF26aavrgaw / AT2026nuq and ZTF26aasemes / AT2026kce as likely TDEs. The sources were selected by the tdescore ML classifier (Stein+2024, doi: …
Released: 2026-05-25 19:47:55
P200 NGPS and Liverpool Telescope IO:O observations of AT2026nik/ZTF26aaxutnf: A fast-rising, exceptionally blue transient with a tentative redshift of z = 0.182
Jacob Wise (LJMU), Daniel Perley (LJMU), Rahul Jayaraman (Cornell), Kaustav Das (Caltech), K-Ryan Hinds (Caltech), Anna…
Source Group: ZTF
Related Objects:
2026nik [ZTF26aaxutnf]
RA, DEC:11:22:52.120, -06:13:18.84
(170.717165, -6.221901)
Redshift:0.182
Type:
,
2018cow [ZTF18abcfcoo]
RA, DEC:16:16:00.220, +22:16:04.91
(244.000917, 22.268031)
Redshift:0.014
Type:SN Ic-BL
,
2026dbl [ZTF26aaglqak]
RA, DEC:09:01:17.363, +18:36:07.67
(135.322346, 18.602132)
Redshift:0.19
Type:
Related Notes: ,
We report LT IO:O and P200 NGPS observations of the fast-rising, blue transient AT2026nik/ZTF26aaxutnf. ZTF and ATLAS photometry showed a >1 mag rise in 2 days. LT IO:O follow-up confirmed the transi…
Released: 2026-05-08 11:30:46
NOT Spectroscopic Classification of Transients
Levente Örs Benkóczy, Alma Bergström, Suhyeon Choe, Marguerite de Sainte Marie D'agneaux, Sara Kutschbach, Emma L…
Source Group: ZTF
Related Objects:
2026kyp [ZTF26aatidrh]
RA, DEC:09:07:24.047, +12:24:11.80
(136.850195, 12.403277)
Redshift:0.087
Type:SN Ia
,
2026iic [ZTF26aaqdhwx]
RA, DEC:09:31:50.563, -00:02:37.62
(142.960677, -0.043783)
Redshift:0.111
Type:SN Ia-CSM
,
2026lap [ZTF26aaumtdl]
RA, DEC:16:11:49.622, -12:20:03.31
(242.956759, -12.334252)
Redshift:0.042
Type:SN Ia
,
2026jms [ZTF26aasygmo]
RA, DEC:11:30:53.178, -04:21:09.37
(172.721575, -4.352603)
Redshift:0.0369
Type:SN IIb
,
2026jzl [ZTF26aatbuhc]
RA, DEC:16:40:16.559, -10:59:34.42
(250.068996, -10.992895)
Redshift:0.067
Type:SN Ib
,
2026iha [ZTF26aarorxm]
RA, DEC:17:06:08.628, +30:34:00.58
(256.535952, 30.566829)
Redshift:0.084
Type:SN IIn
,
2026akp [ZTF26aaqklxk]
RA, DEC:22:51:21.888, +32:21:10.22
(342.841202, 32.352840)
Redshift:0.0214
Type:SN II
We report the spectroscopic classification of 7 transients obtained with the Nordic Optical Telescope as part of the Observational Astrophysics II course at Stockholm University.
Released: 2026-04-28 04:00:34
Spectroscopic Classification of a Low Luminosity Transient Consistent with an LBV Outburst or Supernova Precursor Event
Wynn Jacobson-Galán (Caltech), Nabeel Rehemtulla (Northwestern), Sean Brennan (MPE), Jesper Sollerman (Stockholm), Char…
Source Group: ZTF
Related Objects:
2026kqq [ZTF26aaufnkd]
RA, DEC:12:34:18.898, +06:28:26.99
(188.578743, 6.474165)
Redshift:0.0067
Type:Impostor-SN
,
2017des [PS17cke]
RA, DEC:12:34:18.892, +06:28:26.94
(188.578717, 6.474151)
Redshift:0.007
Type:
We report spectroscopic observations of the low luminosity transient AT 2026kqq in NGC 4532, consistent with an LBV eruption or supernova precursor event.
Released: 2026-04-24 21:06:36
MMT, NOT, and LT follow-up of the young, nearby SNe 2026kid (D=16.5 Mpc) and 2026kie (D=20.3 Mpc)
Nabeel Rehemtulla (Northwestern, CIERA), Wynn Jacobson-Galán (Caltech), Chang Liu (Northwestern, CIERA), Jacob Wise (LJ…
Source Group: ZTF
Related Objects:
2026kid [ZTF26aatswhm]
RA, DEC:15:15:57.226, +56:18:32.09
(228.988443, 56.308914)
Redshift:0.0017
Type:SN II
,
2026kie [ZTF26aatzrft]
RA, DEC:10:52:36.529, +22:55:54.04
(163.152205, 22.931678)
Redshift:0.00424
Type:SN Ic
We report on MMT, NOT, and LT follow-up of the young, nearby SNe 2026kid (D=16.5 Mpc) and 2026kie (D=20.3 Mpc). We classify SN 2026kid as a reddened Type II supernova exhibiting features characterist…
Released: 2026-04-24 19:48:06
Multi-wavelength Observations of the Type Ibn supernova 2026jjc
Michael Camilo (Cornell), Cassie Sevilla (Cornell), Rahul Jayaraman (Cornell), Anna Y. Q. Ho (Cornell); Zoë McGrath (LJ…
Source Group: ZTF
Related Objects:
2026jjc
RA, DEC:16:46:02.450, +30:55:42.15
(251.510208, 30.928375)
Redshift:
Type:
Released: 2026-04-23 19:29:36
ZTF classification of ZTF26aaqodeo / AT2026irt as a tidal disruption event and reclassification of ZTF25acgtfmh / AT2025ahbd as an AGN
Erica Hammerstein (UC Berkeley), Ryan Chornock (UC Berkeley), Jonathan Carney (UNC), Itai Sfaradi (UC Berkeley), Robert…
Source Group: ZTF
Keywords: Transient, TDE, AGN
Related Objects:
2026irt [ZTF26aaqodeo]
RA, DEC:16:00:42.596, +53:29:27.88
(240.177482, 53.491078)
Redshift:0.1087
Type:TDE-He
,
2025ahbd [ZTF25acgtfmh]
RA, DEC:12:54:17.622, -08:36:07.47
(193.573424, -8.602075)
Redshift:0.336
Type:AGN
We report the classification of the optical transient ZTF26aaqodeo / AT2026irt as a tidal disruption event (TDE). The source was selected by the tdescore ML classifier (Stein+2024, doi: 10.3847/2041-…
Released: 2026-04-21 19:10:15
Multi-wavelength Observations of the Type Ic-BL SN AT2026iqx
Cassie Sevilla (Cornell), Rahul Jayaraman (Cornell), Gokul Srinivasaragavan (UMD), Robert Stein (JSI), Anna Y. Q. Ho (C…
Source Group: ZTF
Related Objects:
2026iqx [ZTF26aarjkso]
RA, DEC:08:24:14.063, +00:41:35.65
(126.058595, 0.693236)
Redshift:
Type:
Released: 2026-04-03 18:03:11
Spectroscopic classification of SN 2025xtq as an unusual Type Ia-CSM SN with a > 200-day long-lived plateau
Kaustav K. Das (Caltech), K-Ryan Hinds (Caltech), Daniel A. Perley (LJMU), Jesper Sollerman, Avinash Singh (Stockholm U…
Source Group: ZTF
Keywords: Transient, Supernova
Related Objects:
2025xtq [ZTF25abrpnbo]
RA, DEC:19:55:42.502, +52:48:24.27
(298.927092, 52.806743)
Redshift:0.054
Type:SN Ia-CSM
We report the spectroscopic classification and unusual evolution of SN 2025xtq/ZTF25abrpnbo as an Ia-CSM supernova. The transient has remained near 18.5 mag for over 200 days. Early spectrum is consi…
Released: 2026-04-03 00:01:27
Spectroscopic Observations of AT 2026hir/ZTF26aapviim, the counterpart to EP260324A
Robert Stein (UMD/JSI/NASA GSFC), Kaustav Das (Caltech), Christoffer Fremling (Caltech), Tomas Ahumada (NOIRLab), Akash…
Source Group: ZTF
Related Objects:
2026hir [ZTF26aapviim]
RA, DEC:08:44:12.377, +82:01:11.36
(131.051569, 82.019822)
Redshift:0.088
Type:TDE
Related Notes:
We report the spectroscopic observations of AT 2026hir/ZTF26aapviim, the counterpart to EP260324A. The source has a blue continuum, and possibly exhibits an additional broad feature that could be He …
Released: 2026-03-26 04:15:39
ZTF classification of ZTF26aalndlm / AT2026hdo and ZTF26aahjwyr / AT2026dta as tidal disruption events
Erica Hammerstein (UC Berkeley), Ryan Chornock (UC Berkeley), and R. Stein (JSI), on behalf of the ZTF AGN/TDE working …
Source Group: ZTF
Keywords: Transient, TDE
Related Objects:
2026hdo [ZTF26aalndlm]
RA, DEC:10:31:52.637, +73:58:06.07
(157.969320, 73.968352)
Redshift:0.1085
Type:TDE
,
2026dta [ZTF26aahjwyr]
RA, DEC:14:38:04.888, +43:51:40.53
(219.520366, 43.861259)
Redshift:0.223
Type:TDE-H-He
We report the classification of optical transients ZTF26aalndlm / AT2026hdo and ZTF26aahjwyr / AT2026dta as tidal disruption events (TDEs). The sources were selected by the tdescore ML classifier (St…
Released: 2026-03-12 18:28:18
Spectroscopic Observations and Classifications of Rubin/LSST Transients with Keck/DEIMOS
Wynn Jacobson-Galán, K-Ryan Hinds, Sam Rose, Kaustav K. Das, Mansi Kasliwal, Theophile Jegou du Laz, Thomas Culino, Chr…
Source Group: ZTF
Related Objects:
2025alrj [LSST-P-DO-313998569623257167]
RA, DEC:09:58:24.467, +00:43:41.12
(149.601947, 0.728089)
Redshift:0.065
Type:SN II
,
2026enz [LSST-P-DO-170050505205612651]
RA, DEC:12:29:44.352, +08:00:29.07
(187.434800, 8.008075)
Redshift:0.00327
Type:
,
2026fgq [LSST-AP-DO-170028526579744791]
RA, DEC:12:20:10.542, +07:47:55.89
(185.043925, 7.798859)
Redshift:
Type:SN I
,
2025altn
RA, DEC:10:07:04.516, +02:32:49.00
(151.768817, 2.546944)
Redshift:1.056
Type:SLSN-I
,
2026ewl [LSST-AP-DO-170028526712914004]
RA, DEC:12:22:11.477, +07:44:51.00
(185.547821, 7.747500)
Redshift:0.1355
Type:SN Ia
,
2026fca [LSST-AP-DO-170028526740701203]
RA, DEC:12:27:38.427, +08:00:53.45
(186.910112, 8.014847)
Redshift:0.06329
Type:SN II
,
2026fkf
RA, DEC:12:28:20.196, +08:21:58.10
(187.084150, 8.366138)
Redshift:0.12
Type:SN II
We report Keck/DEIMOS spectroscopic classifications and follow-up observations of transients detected in the Rubin/LSST alert stream.
Released: 2026-03-11 19:39:24
Photometry of a Red Fast Optical Transient
K-Ryan Hinds (Caltech), Xander J. Hall (CMU), Daniel A. Perley (LJMU), Anna Y. Q. Ho (Cornell), Jacob Wise (LJMU), Rah…
Source Group: ZTF
Related Objects:
2026fgk [ZTF26aakjzdt]
RA, DEC:14:37:16.143, +71:50:30.32
(219.317261, 71.841754)
Redshift:0.153
Type:Afterglow
We report optical photometry of a rapidly rising (>6 mag/d) and fading (0.9 mag/d) red optical transient coincident with a host with LS photoz = 0.11 +/-0.02, implying a luminous peak magnitude of ~-…
Released: 2026-02-28 23:46:10
Late-Time Detection of the Ca-rich SN Ia-pec 2024kce in Early LSST Alerts
Kaustav K. Das, Mansi Kasliwal, Theophile Jegou du Laz, Thomas Culino, Wynn Jacobson-Galán, Christoffer Fremling, Sam R…
Source Group: ZTF
Related Objects:
2024kce [ZTF24aaqaroi]
RA, DEC:12:29:49.560, +08:12:48.49
(187.456500, 8.213469)
Redshift:0.003
Type:SN Ia-pec
Related Notes:
We report the late-time detection of the Ca-rich Ia-pec SN 2024kce in early LSST alerts, approximately 640 days after explosion.. The source was identified through a dedicated filter operating within…
Released: 2026-02-25 10:19:59
Spectral re-classification of ZTF26aaffxis as a Type IIb supernova
Konstantinos Tsalapatas, Jesper Sollerman, Avinash Singh, Anjasha Gangopadhyay (SU), Steve Schulze (Weizmann)
Source Group: ZTF
Related Objects:
2026cha [ZTF26aaffxis]
RA, DEC:08:32:33.106, -26:28:37.90
(128.137941, -26.477193)
Redshift:0.0393
Type:SN IIb
Related Notes: , , , ,
SN 2026cha (ZTF26aaffxis) was discovered by Mai et al. (2026) on UT 2026-02-06 16:01:39.648 and was tentatively classified as a Type Ic-BL supernova (AstroNote #2026-31, Hinds et al. 2026). However, …
Released: 2026-02-25 01:12:41
End-to-end Babamul Commissioning Test to Spectroscopically Classify Rubin alerts
Mansi Kasliwal (Caltech), Michael Coughlin (UMN), Theophile Jegou du Laz (Caltech), Christoffer Fremling (Caltech), Tho…
Source Group: ZTF
We report an end-to-end commissioning test with the Babamul event broker on the Rubin alert stream. We report five spectroscopically classified supernovae with NGPS on the Palomar 200-inch telescope.
Released: 2026-02-25 01:06:44
ZTF+LSST Inventory of Nuclear Transients and Supernovae (Z+LIONS)
K-Ryan Hinds, Christoffer Fremling, Mansi Kasliwal, Matthew Graham, Theophile Jegou du Laz, Thomas Culino, Kaustav Das,…
Source Group: ZTF
We announce Z+LIONS: the ZTF+LSST Inventory of Nuclear Transients and Supernovae, a magnitude-limited ZTF survey designed to systematically classify transients detected by either ZTF or LSST within t…
Released: 2026-02-18 19:26:28
ZTF classification of two new TDEs and one Bowen Fluorescence Flare, and spectra/redshifts for three additional TDEs
Erica Hammerstein (UC Berkeley), Ryan Chornock (UC Berkeley), Jonathan Carney (UNC), Robert Stein (UMD), Jean Somalwar …
Source Group: ZTF
Keywords: Transient, TDE, AGN
Related Objects:
2026dmt [ZTF26aafpwna]
RA, DEC:08:28:51.635, +39:04:54.31
(127.215146, 39.081754)
Redshift:0.147
Type:TDE-He
,
2026chm [ZTF26aadsfxv]
RA, DEC:11:05:19.153, +08:07:38.49
(166.329802, 8.127358)
Redshift:0.191
Type:TDE-featureless
,
2026amv [ZTF26aabpzxh]
RA, DEC:08:13:05.300, +01:27:58.08
(123.272083, 1.466133)
Redshift:0.091
Type:TDE
,
2026dmu [ZTF26aadtozg]
RA, DEC:14:58:46.157, +37:35:00.26
(224.692322, 37.583405)
Redshift:0.169
Type:
,
2025zmb [ZTF25abuovxv]
RA, DEC:06:09:46.694, +35:34:19.94
(92.444560, 35.572207)
Redshift:0.345
Type:TDE-featureless
,
2025afvr [ZTF25acfyeke]
RA, DEC:01:07:36.302, +24:22:39.82
(16.901258, 24.377728)
Redshift:0.403
Type:TDE-featureless
We report the classification of optical transients ZTF26aafpwna (AT2026dmt), and ZTF26aadsfxv (AT2026chm) as likely tidal disruption events (TDEs), plus present an additional spectrum for ZTF26aabpzx…
Released: 2026-02-17 19:33:53
Keck LRIS and Liverpool Telescope IO:O observations of AT2026dbl/ZTF26aaglqak: an exceptionally blue, fast-fading transient at z = 0.19
Jacob Wise (LJMU), Wynn Jacobson-Galan (Caltech), Daniel Perley (LJMU), Anna Y. Q. Ho (Cornell), Zoe McGrath (LJMU), Al…
Source Group: ZTF
Related Objects:
2026dbl [ZTF26aaglqak]
RA, DEC:09:01:17.363, +18:36:07.67
(135.322346, 18.602132)
Redshift:0.19
Type:
We present Keck LRIS spectroscopy and LT IO:O photometry of the transient AT2026dbl. The transient was first detected on MJD 61085.35 by ZTF, displaying a magnitude of g ~ 18.7 and a colour of g - r …
Released: 2026-02-12 21:32:40
Tentative classification of AT2026cha as a Rapidly Evolving Type Ic-BL Supernova
Authors: K-Ryan Hinds (Caltech), Jonathan Carney (UNC), Igor Andreoni (UNC), Anna Y. Q. Ho (Cornell), Rahul Jayaraman (…
Source Group: ZTF
Related Objects:
2026cha [ZTF26aaffxis]
RA, DEC:08:32:33.106, -26:28:37.90
(128.137941, -26.477193)
Redshift:0.0393
Type:SN IIb
We report the tentative classification of the rapidly evolving transient AT2026cha as a Type Ic-BL supernova.
Released: 2026-02-11 21:09:33
Photometry and Spectroscopy of AT2026cha
Rahul Jayaraman (Cornell), Jacob Wise (LJMU), Cassie Sevilla (Cornell), Zoë McGrath (LJMU), K-Ryan Hinds (Caltech), Ann…
Source Group: ZTF
Related Objects:
2026cha [ZTF26aaffxis]
RA, DEC:08:32:33.106, -26:28:37.90
(128.137941, -26.477193)
Redshift:0.0393
Type:SN IIb
We report photometry and spectroscopy of a rapidly rising (>1.5 mag/day) and blue optical transient located close in projection to a z=0.04 dwarf galaxy.
Released: 2026-01-22 10:41:39
Classification of SN 2026ayt as a Young Type II Supernova
Wynn Jacobson-Galán (Caltech)
Source Group: ZTF
Related Objects:
2026ayt [ATLAS26ayq]
RA, DEC:09:27:23.390, -32:00:30.88
(141.847459, -32.008577)
Redshift:0.0036
Type:SN II
We report the classification of SN 2026ayt as a likely young type II supernova in UGCA 165 at ~16 Mpc.
Released: 2026-01-16 19:15:01
ZTF Classification of AT 2025aljd/ZTF25aclckzl as a likely TDE
R. Chornock (UC Berkeley), E. Hammerstein (UC Berkeley), R. Stein (UMD/JSI), and J. Carney (UNC), on behalf of the ZTF …
Source Group: ZTF
Keywords: Transient, TDE, Optical
Related Objects:
2025aljd [ZTF25aclckzl]
RA, DEC:09:37:40.689, +20:02:14.98
(144.419537, 20.037496)
Redshift:0.15
Type:TDE
We spectroscopically classify the optical transient AT2025aljd/ZTF25aclckzl as a TDE at redshift z=0.150 using the Shane 3 m telescope at Lick Observatory.
Released: 2025-12-22 04:11:17
Spectroscopic classification of SN 2025anhj as a young, blue, and rising Type Ibn SN
Kaustav K. Das (Caltech), Daniel A. Perley (LJMU), Avinash Singh, Jesper Sollerman, Anjasha Gangopadhyay (OKC), Anna Ho…
Source Group: ZTF
Related Objects:
2025ahnj
RA, DEC:00:23:38.496, -01:27:32.77
(5.910400, -1.459103)
Redshift:0.067
Type:SN Ibn
We report Keck/LRIS spectroscopy of SN 2025anhj, a Type Ibn supernova discovered by the Zwicky Transient Facility (ZTF25acipmxl). The classification is based on weak He I P-Cygni features, residual C…
Released: 2025-12-21 04:45:43
Discovery and classification of SN 2025ahqr, a highly reddened low luminosity Type Iax in M108 (9 Mpc)
Nabeel Rehemtulla (Northwestern, CIERA), Jesper Sollerman (Stockholm), Chang Liu (Northwestern, CIERA), Wynn Jacobson-G…
Source Group: ZTF
Related Objects:
2025ahqr [ZTF25acepvuo]
RA, DEC:11:11:25.998, +55:40:29.94
(167.858324, 55.674984)
Redshift:0.002328
Type:SN Iax[02cx-like]
We report the discovery of a highly reddened transient in Messier 108 (9 Mpc) and classify it as a low luminosity Type Iax. With Gemini/GMOS spectroscopy, we measure low expansion velocities (v
Released: 2025-12-03 18:33:27
Liverpool Telescope and P200 classification of 2025afcr as a bright, pre-maximum SLSN-I at z = 0.1335
Jacob Wise (LJMU), Ragnhild Lunnan (OKC), Steve Schulze (CIERA), Lin Yan (Caltech), Christoffer Fremling (Caltech), Wyn…
Source Group: ZTF
Related Objects:
2025afcr [ZTF25acemaph]
RA, DEC:12:38:41.773, +07:36:37.43
(189.674056, 7.610396)
Redshift:0.1335
Type:SLSN-I
Related Notes: ,
We report ZTF, Liverpool Telescope, Palomar P200 and Swift observations of 2025afcr/ZTF25acemaph. We find it to be a bright (g < 18) pre-maximum SLSN-I at a redshift of z = 0.1335 in a compact star-f…
Released: 2025-11-27 11:39:05
Shane KAST & Liverpool Telescope observations of AT 2025zmb/ZTF25abuovxv, a candidate optically overluminous featureless TDE
Aleksandra Bochenek (LJMU), Zoë McGrath (LJMU), Jacob Wise (LJMU), Daniel Perley (LJMU), R. Michael Rich (UCLA), Christ…
Source Group: ZTF
Related Objects:
2025zmb [ZTF25abuovxv]
RA, DEC:06:09:46.694, +35:34:19.94
(92.444560, 35.572207)
Redshift:0.345
Type:TDE-featureless
Related Notes: ,
We report the observations of AT 2025zmb/ZTF25abuovxv, which we tentatively classify as a candidate optically overluminous featureless TDE, following its spectroscopic observations with the Kast spec…
Released: 2025-11-19 03:06:27
ZTF Identification of ZTF25absjioz (AT 2018mqa) as a possible low-luminosity TDE at 63 Mpc
R. Stein (JSI), Y. Yao (UC Berkeley), X. J. Hall (CMU), K. Das (Caltech), J. Johansson (Stockholm), M. Kasliwal (Caltec…
Source Group: ZTF
Keywords: Transient, TDE
Related Objects:
2018mqa [ZTF25absjioz]
RA, DEC:08:10:06.057, +24:55:19.88
(122.525237, 24.922189)
Redshift:0.014
Type:TDE
Related Notes:
We report the identification of optical transient ZTF25absjioz/AT 2018mqa as a possible tidal disruption event (TDE). The transient is located in the nucleus of a nearby galaxy at 63 Mpc, with a low …
Released: 2025-11-09 03:54:08
ZTF Classification of ZTF25abxvhmk/AT 2025abcr as a likely offnuclear TDE, possibly from an IMBH, at z=0.05
R. Stein (JSI), J. Carney (UNC), I. Andreoni (UNC), R. Chornock (UC Berkeley), S. Gezari (UMd), Erica Hammerstein (UC B…
Source Group: ZTF
Keywords: Transient, TDE
Related Objects:
2025abcr
RA, DEC:01:46:55.400, -15:22:15.71
(26.730831, -15.371032)
Redshift:0.05
Type:TDE-H-He
We report the classification of optical transient ZTF25abxvhmk/AT 2025abcr as a likely offnuclear tidal disruption event (TDE). Subsequent follow-up suggests a probable TDE-H-He classification. The l…
Released: 2025-10-29 16:33:26
ZTF superluminous supernova candidates
Aiswarya Sankar.K, Ting-Wan Chen (NCU), Yang Hu, Ragnhild Lunnan, Etienne Russeil, Anamaria Gkini (OKC), Daniel A. Perl…
Source Group: ZTF
Keywords: Transient, Supernova
Related Objects:
2025wqw [ZTF25abnmvkd]
RA, DEC:20:03:17.850, +06:46:13.56
(300.824376, 6.770434)
Redshift:
Type:
,
2025zqg [ZTF25abtlpwf]
RA, DEC:16:38:00.332, +58:38:51.61
(249.501383, 58.647669)
Redshift:
Type:
,
2025wxd [ZTF25abmvftr]
RA, DEC:22:08:48.923, +31:56:09.09
(332.203847, 31.935857)
Redshift:
Type:
,
2025xjw [ZTF25abqdgrb]
RA, DEC:21:53:34.308, -18:24:06.60
(328.392949, -18.401833)
Redshift:
Type:
,
2025xmy [ZTF25abqnaho]
RA, DEC:00:03:14.967, +28:26:58.94
(0.812361, 28.449704)
Redshift:
Type:
,
2025zmb [ZTF25abuovxv]
RA, DEC:06:09:46.694, +35:34:19.94
(92.444560, 35.572207)
Redshift:0.345
Type:TDE-featureless
,
2025ywm [ZTF25abtymyl]
RA, DEC:17:05:48.450, +34:07:32.27
(256.451873, 34.125629)
Redshift:
Type:
We report 7 ZTF superluminous supernova candidates selected by our software filter and subsequent human vetting. In this sample, a typical rise time is longer than 30 days and a typical peak r-band m…
Released: 2025-10-29 02:57:55
ZTF Classification of AT 2025aapf/ZTF25abxcnsf as a likely TDE-featureless
R. Chornock (UC Berkeley), R. Stein (UMD/JSI), E. Hammerstein (UC Berkeley), J. Carney (UNC) on behalf of the ZTF TDE/A…
Source Group: ZTF
Related Objects:
2025aapf [ZTF25abxcnsf]
RA, DEC:09:25:01.367, +40:04:18.15
(141.255697, 40.071709)
Redshift:0.18
Type:TDE-featureless
We spectroscopically classify the optical transient AT2025aapf/ZTF25abxcnsf as a TDE-featureless at redshift z=0.180 using Keck-I/LRIS.
Released: 2025-10-05 23:35:04
ZTF and LT Observations of the Fast and Blue Optical Transient AT2025zow
K-Ryan Hinds (Caltech), Anna Ho (Cornell), Dan Perley (LJMU), Jacob Wise (LJMU)
Source Group: ZTF
Related Objects:
2025zow [ZTF25abvalml]
RA, DEC:02:23:20.928, +32:06:08.54
(35.837198, 32.102372)
Redshift:
Type:
We report ZTF and LT observations of a fast and blue optical transient, AT2025zow (ZTF25abvalml).
Released: 2025-10-04 22:32:24
Liverpool Telescope Discovery of Multiple Images from AT2025wny (ZTF25abnjznp/GOTO25gtq)
Jacob Wise (LJMU), Daniel Perley (LJMU), Ariel Goobar (OKC), Joel Johansson (OKC), Zoe McGrath (LJMU)
Source Group: ZTF
Related Objects:
2025wny [GOTO25gqt]
RA, DEC:07:16:34.500, +38:21:08.11
(109.143748, 38.352253)
Redshift:2.011
Type:SLSN-I
We report the discovery of multiple images of the transient AT2025wny (ZTF25abnjznp/GOTO25gtq) in Liverpool Telescope IO:O imaging on UT 2025-10-03 and 2025-10-04. Image subtraction using Pan-STARRS …
Released: 2025-09-26 17:29:57
Classification of SN 2025xjd as a low luminosity Type Iax at 62 Mpc
Nabeel Rehemtulla (Northwestern, CIERA), Wynn Jacobson-Galán (Caltech), Chang Liu (Northwestern, CIERA), Adam A. Miller…
Source Group: ZTF
Keywords: Optical, Supernova
Related Objects:
2025xjd [ZTF25abqhqmk]
RA, DEC:08:16:04.580, +23:07:53.54
(124.019085, 23.131540)
Redshift:0.013797
Type:SN Iax[02cx-like]
We report the classification of the 62 Mpc SN 2025xjd as a low luminosity Type Iax SN. Our spectra reveal low expansion velocities (v ~ 3,000 km/s and later v ~ 1,500 km/s) and a low peak absolute ma…
Released: 2025-09-20 04:44:02
ZTF Classification of AT 2022aeys/ZTF22aaqccka as an AGN Turn-on Event in SDSS J002440.72-003019.9
R. Chornock, E. Hammerstein, Y. Yao, R. Margutti (UC Berkeley), J. Carney (UNC), R. Stein (UMD/JSI), and M. J. Graham (…
Source Group: ZTF
Related Objects:
2022aeys [ZTF22aaqccka]
RA, DEC:00:24:40.708, -00:30:19.11
(6.169615, -0.505309)
Redshift:0.043
Type:AGN
We classify the long-rising optical transient AT 2022aeys/ZTF22aaqccka as a likely AGN turn-on event in a quiescent host galaxy.
Released: 2025-08-28 21:23:49
ZTF and LT Observations of the Fast and Blue Optical Transient AT2025wap
Maggie Li (Caltech), Anna Ho (Cornell), Daniel A. Perley (LJMU), Jacob Wise (LJMU), Michael Coughlin (University of Min…
Source Group: ZTF
Keywords: Optical
Related Objects:
2025wap [ZTF25abkgjzb]
RA, DEC:21:07:28.290, +14:08:17.21
(316.867875, 14.138114)
Redshift:
Type:
We report ZTF and LT observations of a fast and blue optical transient, AT2025wap (ZTF25abkgjzb).

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