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Showing results 1 to 30 out of 30
Released: 2024-10-31 15:38:44
Transient classification with NOT/ALFOSC
Nadejda Blagorodnova, Gerard Garcia-Moreno, Marco Gomez-Muñoz (ICCUB), David Jones (IAC), Hugo Tranin, Grace Katusiim...
Source Group: CET-3PO
Related Objects:
2024wsg [ZTF24abjoura]
RA, DEC:03:11:56.293, -02:58:01.22
(47.984554, -2.967006)
Redshift:0.028583
Type:SN II-pec
,
2024yrr [BGEM J020234.15+233824.7]
RA, DEC:02:02:34.153, +23:38:24.75
(30.642304, 23.640208)
Redshift:0.042413
Type:
Here we report the classification of two optical transients (an old SN II and an unidentified nuclear transient).
Released: 2024-10-15 12:06:10
Spectroscopic classification of AT2024xdo as a YSO
C. Adami, N. Grosso, D. Russeil (LAM/Pytheas), Y. Degot-Longhi (OHP/Pytheas)
Related Objects:
2024xdo
RA, DEC:06:08:19.860, +02:14:17.77
(92.082750, 2.238269)
Redshift:
Type:
MISTRAL@T193OHP spectroscopic classification of AT2024xdo as a YSO
Released: 2024-09-07 11:37:36
Gemini North Spectroscopy of AT2024uaq
Jason Sevilla, Anna Y. Q. Ho (Cornell), and Daniel Perley (LJMU)
Source Group: ZTF
Related Objects:
2024uaq
RA, DEC:21:44:29.644, +44:03:10.96
(326.123517, 44.053044)
Redshift:
Type:
Related Notes:
We report Gemini North spectroscopy of the fast transient AT2024uaq. Two traces are detected close to the transient position, one with Balmer lines at z=0 and one with emission lines at z=0.384. Th...
Released: 2024-08-30 13:52:08
Asiago Spectroscopic classification of AT 2024tde as an M dwarf flare within the 2024 ASYAGO Summer School
I. Albanese, A. Visentin, A. Farina (UniPd), A. Reguitti (INAF OA-Brera, INAF OA-Padova)
Source Group: Padova-Asiago
Related Objects:
2024tde [PSP24U]
RA, DEC:00:15:39.630, +34:46:15.10
(3.915125, 34.770861)
Redshift:
Type:M dwarf
We report the spectroscopic classification of AT 2024tde as a flare from an M dwarf star.
Released: 2024-08-03 11:57:24
ZTF Reclassification of SN 2024pco/ZTF24aaupoba as a Ib-pec SN
Anjasha Gangopadhyay, Jesper Sollerman, Avinash Singh, Priscila J Pessi (OKC,SU)
Related Objects:
2024pco [ZTF24aaupoba]
RA, DEC:01:57:55.700, +13:21:38.92
(29.482083, 13.360811)
Redshift:0.0443
Type:SN Ib-pec
Related Notes:
We re-classify SN 2024pco/ZTF24aaupoba as a Ib-pec SN based on a recently obtained spectroscopic information.
Released: 2024-04-06 10:11:48
Shane Kast spectral classification of transients 2024-04-02
Jacob Wise (LJMU), Daniel Perley (LJMU), K-Ryan Hinds (LJMU), R. Michael Rich (UCLA), Osmin Caceres (UCLA), Adam Mill...
Source Group: ZTF
Related Objects:
2024ox [ZTF24aaartcf]
RA, DEC:17:02:12.918, +56:11:47.92
(255.553826, 56.196645)
Redshift:0.0299
Type:SN Iax[02cx-like]
,
2024eui [ZTF18aawqjjj]
RA, DEC:10:52:51.350, +37:25:36.80
(163.213958, 37.426889)
Redshift:0.0868
Type:SN Ia
,
2024faj [ZTF24aagxdol]
RA, DEC:07:59:49.603, +08:26:54.85
(119.956677, 8.448569)
Redshift:0.0725
Type:SN Ia-91T-like
,
2024eao [ZTF24aagpxan]
RA, DEC:06:09:46.380, +43:57:11.77
(92.443250, 43.953269)
Redshift:0.0277
Type:SN Ia
,
2024dwv [ZTF24aagpwsh]
RA, DEC:06:42:19.679, +41:57:27.59
(100.581998, 41.957665)
Redshift:0.0431
Type:SN Ia
,
2024enp [ZTF24aahgcwg]
RA, DEC:06:19:34.348, +55:11:48.02
(94.893118, 55.196671)
Redshift:0.0443
Type:SN Ia
,
2024dlo [ZTF24aagkvvm]
RA, DEC:16:02:12.817, +15:54:27.61
(240.553406, 15.907668)
Redshift:
Type:
Related Notes:
We report observations of 7 transients using the Shane Kast spectrograph at the Lick observatory on the night of 2024-04-02. Classifications were found for 6 objects, which includes 1 SN Iax (02cx-...
Released: 2024-02-13 19:04:07
Asiago Spectroscopic classification of SN 2024cao and AT 2024ccb within the 2023 NEON Observing School
A. Reguitti (INAF-OAB; INAF-OAPd), L. Izzo (INAF-OACn; DARK/NBI), I.F. Giudice (INAF-OACn), Z. Bora (Konkoly Observat...
Source Group: Padova-Asiago
Related Objects:
2024ccb [ATLAS24chb]
RA, DEC:00:42:57.190, +41:19:03.68
(10.738292, 41.317689)
Redshift:-0.001
Type:Nova
,
2024cao [ZTF24aaelfxz]
RA, DEC:23:51:34.981, +36:14:29.78
(357.895753, 36.241605)
Redshift:0.03
Type:SN Ia
We report the spectroscopic classification of SN 2024cao as a SN Ia and AT 2024ccb as a Fe II Nova in M31.
Released: 2024-01-04 18:33:49
YSE Spectroscopic Classification of Transients with GMOS
Wynn Jacobson-Galán (UCB), Charlotte Angus (QUB), Ryan Foley, Kyle Davis (UCSC), on behalf of the YSE collaboration
Source Group: YSE
Related Objects:
2024fa [PS24ca]
RA, DEC:02:25:01.360, -24:47:12.88
(36.255667, -24.786911)
Redshift:0.01
Type:SN II
The Young Supernova Experiment (YSE) collaboration reports the classification of 1 optical transient using the Gemini GMOS-N: 1 type II supernova within days of explosion.
Released: 2023-10-12 17:32:41
Early Spectrum of the FBOT Candidate 2023ufx from SCAT
M. A. Tucker (CCAPP/OSU) on behalf of the SCAT team
Source Group: SCAT
Related Objects:
2023ufx [ATLAS23tsa]
RA, DEC:08:24:51.568, +21:17:43.15
(126.214866, 21.295320)
Redshift:0.01
Type:SN II
Related Notes:
We obtained a classification spectrum of the FBOT candidate AT2023ufx on 2023-10-09T14:17:46 showing a steep featureless blue continuum.
Released: 2023-06-03 06:57:23
Host Extinction of SN2023ixf
Michael Lundquist, John O'Meara, Josh Walawender (W. M. Keck Observatory)
Related Objects:
2023ixf
RA, DEC:14:03:38.562, +54:18:41.94
(210.910675, 54.311651)
Redshift:0.0008
Type:SN II
Using data taken with the Keck Planet Finder spectrograph we calculate a host E(B-V) extinction of 0.031±0.006.
Released: 2023-05-26 08:01:03
NUTS2 spectroscopy of supernova 2023ixf. The first week of evolution
Maximilian Stritzinger (Aarhus), Giorgio Valerin (Padua), Nancy Elias-Rosa (Padua), Morgan Fraser (Dublin), Lluis Gal...
Source Group: NUTS
Related Objects:
2023ixf
RA, DEC:14:03:38.562, +54:18:41.94
(210.910675, 54.311651)
Redshift:0.0008
Type:SN II
Related Notes: , ,
We report low-resolution spectroscopic observations of SN 2023ixf obtained by NUTS2 covering the first week of evolution. Spectra will be made available on TNS/Wiserep.
Released: 2023-05-23 21:28:34
DESI Spectrum of SN 2023ixf
Segev BenZvi (University of Rochester), Dillon Brout (Harvard University), Arjun Dey (NOIRLab), Cullan Howlett (Unive...
Source Group: DESI
Related Objects:
2023ixf
RA, DEC:14:03:38.562, +54:18:41.94
(210.910675, 54.311651)
Redshift:0.0008
Type:SN II
We present the spectrum of SN 2023ixf observed at 03:19:22.4 UTC on 23 May 2023 (MJD = 60087.138) using the Dark Energy Spectroscopic Instrument (DESI) at the 4m Mayall Telescope at Kitt Peak Natio...
Released: 2023-05-17 18:10:49
ZTF, LT, and Keck/DEIMOS Observations of the Candidate Fast Blue Optical Transient (FBOT) AT2023hkw
Maggie L. Li (Cornell), Anna Y. Q. Ho (Cornell), Alexei V. Filippenko, Thomas G. Brink, Yi Yang, WeiKang Zheng, Sophi...
Source Group: ZTF
Related Objects:
2023hkw
RA, DEC:10:42:17.752, +52:29:19.33
(160.573965, 52.488701)
Redshift:
Type:
We report observations of the fast blue transient AT2023hkw (ZTF23aaimsja) ~3.3” from a cataloged galaxy in SDSS. In the g band, the transient brightened by 1.2 mag from the most recent upper limit...
Released: 2023-05-15 11:12:48
Spectra of PESSTO data releases SSDR1-4 are publicly available on WISeREP
Ofer Yaron (WIS), David Young, Ken Smith (QUB), Stephen Smartt (Oxford/QUB), on behalf of the PESSTO collaboration
Source Group: PESSTO
The spectra released as part of the official PESSTO/ePESSTO data releases SSDR 1 to 4 are now up on WISeREP as a complete dataset, and the data - spectra and metadata lists - are also attached here...
Released: 2023-04-20 16:37:51
ZTF, Gemini, and P200 Observations of the Candidate Luminous Fast Blue Optical Transient AT2023fhn
Anna Y. Q. Ho (Cornell), Chang Liu (Northwestern), Igor Andreoni (UMD), Michael Coughlin (UMN), Yu-Jing Qin (Caltech)...
Source Group: ZTF
Related Objects:
2023fhn
RA, DEC:10:08:03.815, +21:04:26.95
(152.015896, 21.074153)
Redshift:
Type:
,
2023A
RA, DEC:12:29:56.482, +02:52:58.97
(187.485343, 2.883047)
Redshift:0.07988
Type:SN Ia
,
2018cow
RA, DEC:16:16:00.220, +22:16:04.91
(244.000917, 22.268031)
Redshift:0.014
Type:SN Ic-BL
,
2020xnd
RA, DEC:22:20:02.030, -02:50:25.30
(335.008458, -2.840361)
Redshift:
Type:
,
2022tsd
RA, DEC:03:20:10.863, +08:44:55.63
(50.045264, 8.748787)
Redshift:
Type:
We report observations of the fast, blue transient AT2023fhn (ZTF23aaeozpp/ATLAS23hnk), 5” from a catalogued galaxy in SDSS. The transient brightened over two days and faded by 1.4 magnitudes over ...
Released: 2023-04-18 12:45:06
Follow-up observations of Type Icn SN 2023emq: transition to a Type Ibn SN
M. Pursiainen, G. Leloudas (DTU Space)
Related Objects:
2023emq
RA, DEC:13:34:22.033, -23:43:51.45
(203.591805, -23.730957)
Redshift:0.031
Type:SN Icn
Related Notes:
We report a spectral transition of SN 2023emq from a Type Icn SN into a Type Ibn SN
Released: 2022-11-19 09:36:37
LJT spectroscopic classification of AT 2022aanf as a young Type Ia supernova
Qian Zhai, Jujia Zhang (YNAO); Liping Li (YNU); Xiaofeng Wang (THU)
Source Group: LiONS
Related Objects:
2022aanf
RA, DEC:04:09:09.625, +17:06:59.05
(62.290102, 17.116402)
Redshift:0.024
Type:SN Ia
Released: 2022-09-15 14:10:53
The Next Generation SuperFit (NGSF) tool is now available for online execution on WISeREP
Samantha Goldwasser, Ofer Yaron, Avner Sass, Ido Irani, Avishay Gal-Yam (Weizmann), D. Andrew Howell (Las Cumbres / U...
NGSF, a software for the spectral classification of Supernovae based on Andy Howell's Superfit has been integrated into WISeREP (the Weizmann interactive Supernova data repository), and it is now p...
Released: 2021-07-25 09:28:47
Asiago spectroscopic classification of an optical transient
P. Ochner (UniPd), A. Reguitti (UNAB)
Source Group: Padova-Asiago
Related Objects:
2021tyc
RA, DEC:20:07:42.870, +13:26:24.40
(301.928625, 13.440111)
Redshift:0
Type:CV
Related Notes:
We report the spectroscopic classification of AT2021tyc as an outburst of a Cataclysmic Variable.
Released: 2021-07-15 18:46:15
Classification of AT 2021seu as a Possible Bowen Fluorescence Flare around a Supermassive Black Hole
Iair Arcavi (TAU), Megan Newsome (Las Cumbres / UCSB), Yael Dgany, Lydia Makrygianni, Benny Trakhtenbrot (TAU), D. An...
Source Group: StarDestroyers
Related Objects:
2021seu
RA, DEC:14:21:34.622, +37:54:34.97
(215.394259, 37.909714)
Redshift:0.06
Type:
We classify AT 2021seu as a possible Bowen Fluorescence Flare, related to enhanced accretion onto a supermassive black hole. Our FLOYDS spectrum, obtained on UT 2021-07-10, and made public on the T...
Released: 2021-07-07 19:23:36
Spectroscopic Classification of AT2021qyd (ZTF21abhywxv) with Keck I + LRIS
Yuhan Yao (Caltech), Yashvi Sharma (Caltech), Anna Y. Q. Ho (UC Berkeley), D. Perley (LJMU), S. R. Kulkarni (Caltech)
Source Group: ZTF
Related Objects:
2021qyd [ZTF21abhywxv]
RA, DEC:16:55:04.485, +52:07:39.48
(253.768686, 52.127632)
Redshift:0.049
Type:SN Ib/c
Related Notes:
We report the spectroscopic classification of AT2021qyd as a peculiar Type Ib/c supernova.
Released: 2021-06-12 19:42:39
Asiago spectroscopic classification of an optical transient
A. Reguitti (UNAB), P. Ochner, I. Salmaso, A. Farina, V. Andreoli, I. Albanese (UniPd)
Source Group: Padova-Asiago
Related Objects:
2021pin
RA, DEC:14:43:41.950, -17:55:51.10
(220.924792, -17.930861)
Redshift:0
Type:CV
We report the spectroscopic classification of AT2021pin as an outburst of a Cataclysmic Variable
Released: 2021-06-08 16:01:30
Classification of AT 2021ont as a Possible Bowen Fluorescence Flare around a Supermassive Black Hole
Lydia Makrygianni (TAU), Yael Dgany (TAU), Marco Lam (TAU), Benny Trakhtenbrot (TAU), Iair Arcavi (TAU), Claudio Ricc...
Keywords: Spectroscopy
Related Objects:
2021ont [ZTF21abdmevk]
RA, DEC:16:26:42.476, +39:08:42.98
(246.676983, 39.145273)
Redshift:0.02833
Type:SN II
We classify AT 2021ont as a likely Bowen Fluorescence Flare, related to enhanced accretion onto a SMBH, based on an LT-SPRAT spectrum obtained on UT 2021-06-06 23:25:23. In this sense, AT 2021ont r...
Released: 2021-05-05 14:20:21
ZTF21aayokph (AT2021lfa): Redshift from Gemini South
Yuhan Yao (Caltech), Anna Ho (UC Berkeley), Daniel Perley (LJMU)
Related Objects:
2021lfa
RA, DEC:12:32:48.725, -01:29:22.56
(188.203019, -1.489601)
Redshift:
Type:
We observed AT2021lfa with GMOS-S, and identify z=1.063 as the most probable redshift for this candidate afterglow.
Released: 2021-03-20 22:52:13
Liverpool Telescope spectroscopy of AT2021gno and AT2021gmj
Daniel Perley (LJMU) on behalf of ZTF
Source Group: ZTF
Related Objects:
2021gmj [ZTF21aaqgmjt]
RA, DEC:00:00:00.000, +00:00:00.00
(0.000000, 0.000000)
Redshift:
Type:
2021gmj [ZTF21aaqgmjt]
,
2021gno [ZTF21aaqhhfu]
RA, DEC:00:00:00.000, +00:00:00.00
(0.000000, 0.000000)
Redshift:
Type:
2021gno [ZTF21aaqhhfu]
Related Notes:
Spectroscopy from the Liverpool Telescope shows AT2021gmj to be a young Type II supernova. The spectrum of AT2021gno is blue and featureless.
Released: 2020-02-08 16:37:34
Classification of SN2020bvc (ASASSN-20bs) as a young broad-lined Ic supernova in UGC 9379
Daniel Perley (LJMU), Steve Schulze (Weizmann), Rachel Bruch (Weizmann)
Source Group: ZTF
Related Objects:
2013cu
RA, DEC:14:33:58.970, +40:14:20.69
(218.495710, 40.239080)
Redshift:0.025235
Type:SN IIb
,
2018gep
RA, DEC:16:43:48.201, +41:02:43.38
(250.950838, 41.045383)
Redshift:0.032
Type:SN Ic-BL
,
1998bw
RA, DEC:19:35:03.310, -52:50:44.81
(293.763790, -52.845780)
Redshift:
Type:SN Ic
,
2020bvc
RA, DEC:14:33:57.009, +40:14:37.62
(218.487539, 40.243784)
Redshift:0.025235
Type:SN Ic-BL
We report Liverpool Telescope spectroscopy of SN 2020bvc, classifying it as a young Ic-BL supernova at d=110 Mpc. Early ZTF, LT, and ASAS-SN photometry shows it to have had an extremely fast initi...
Released: 2020-01-03 18:13:44
ePESSTO+ spectroscopic classification of optical transients
T. Müller Bravo (Southampton), N. Meza (PUC), P. Wiseman, M. Grayling (Southampton), L. Galbany (UGR), T. Nagao (ESO)...
Source Group: ePESSTO+
Related Objects:
2020ac [ATLAS20abm]
RA, DEC:09:56:55.129, +15:42:09.04
(149.229704, 15.702510)
Redshift:0.074
Type:SN Ia-91T-like
,
2019yzs [ZTF19adcbnty]
RA, DEC:09:04:34.734, +14:35:44.87
(136.144725, 14.595798)
Redshift:0.0498
Type:
This report includes classifications of 1 Type Ia 91T-like SN, and an unknown nuclear transient.
Released: 2019-10-19 09:34:58
Swift observations and spectroscopic classification of OGLE19qem as a Type IIn supernova
M. Gromadzki, N. Ihanec, S. Kozlowski, L. Wyrzykowski (Uni. of Warsaw), I. Arcavi, B. Trakhtenbrot (Tel Aviv Univers...
Related Objects:
2019qem [OGLE19qem]
RA, DEC:06:03:45.010, -64:22:35.94
(90.937542, -64.376650)
Redshift:0.042
Type:SN IIn
Here we present Swift observations and spectroscopic classification of OGLE19qem. The object was not detected in X-rays. UVOT colours suggests a temperature around 7000 K, while the spectral featur...
Released: 2019-08-02 15:27:13
Classification of three type Ia SNe using the multispectral VPHG GRIS-U for DOLORES@TNG
S. Benetti, L. Tomasella, I. Salmaso, E. Cappellaro, M. Turatto (INAF - Osservatorio Astronomico di Padova), A. Bian...
Source Group: Padova-Asiago
Related Objects:
2019lyb [ASASSN-19sv]
RA, DEC:15:11:03.356, +52:03:00.59
(227.763983, 52.050163)
Redshift:0.03692
Type:SN Ia
,
2019lwe [ATLAS19qee]
RA, DEC:15:59:31.460, +43:25:46.63
(239.881083, 43.429619)
Redshift:0.038
Type:SN Ia
,
2019lvf [ZTF19abimlck]
RA, DEC:23:04:18.400, +46:32:10.03
(346.076667, 46.536119)
Redshift:0.048083
Type:SN Ia
We report the spectroscopic classifications of ASAS-SN19sv (SN2019lyb), ATLAS19qee (SN2019lwe) and ZTF19abimlck (SN2019lvf) as type Ia SNe.
Released: 2019-07-26 08:06:27
Asiago spectroscopic classification of optical transients
Marco Berton (FINCA, University of Turku) , Lina Tomasella (INAF OAPd), Irene Salmaso (DFA University of Padova, INAF...
Source Group: Padova-Asiago
Related Objects:
2019lrq [ASASSN-19se]
RA, DEC:16:18:01.310, +67:04:00.19
(244.505460, 67.066720)
Redshift:0.095
Type:AGN
We report the spectroscopic classifications of AT2019lrq as a type 1 AGN

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Released: 2022-07-16
Views Count: 6156
Discovery of Possible Transient in JWST NIRCam Images of SDSS J141930.11+525159.3
Mike Engesser (STScI), Gabriel Brammer (University of Copenhagen), Katriona Gould (University of ...
Released: 2023-05-23
Views Count: 5637
Early multiband light curve of SN 2023ixf
Juan-Luis González-Carballo, R. G. Farfán, F. Limón, J. L. Salto, C. Botana, A. Mantero, G. Locat...
Released: 2023-05-19
Views Count: 5122
LT Classification of SN 2023ixf as a Type II Supernova in M101
Daniel A. Perley (LJMU), Avishay Gal-Yam (Weizmann), Ido Irani (Weizmann), Erez Zimmerman (Weizmann)
Released: 2020-05-07
Views Count: 2707
Classification of SN 2020jfo (ZTF20aaynrrh) as a young Type II supernova
Daniel Perley (LJMU), Cristina Barbarino (Stockholm), Jesper Sollerman (Stockholm), Tassilo Schwe...
Released: 2020-04-22
Views Count: 2393
ATLAS20ktt (AT2020hvp): discovery of a candidate supernova in NGC 6118 (27 Mpc)
M. Fulton, K. W. Smith, S. Srivastav, O. McBrien, S. J. Smartt, J. Gillanders, P. Clark, D. O...
Released: 2023-10-11
Views Count: 2388
SN 2023tyk: discovery to spectroscopic classification performed fully automatically
Nabeel Rehemtulla (NU), Adam Miller (NU), Christoffer Fremling (Caltech), D. A. Perley (LJMU), Yu...
Released: 2023-05-22
Views Count: 2378
Onset of SN 2023ixf observed over East Asian longitudes
Yiming Mao, Mi Zhang, Guangyao Cai, Jinan Chen, Jin Chen, Xing Gao, Keying Li, Xiaodong Lyu, Yuji...
Released: 2019-12-31
Views Count: 2216
ePESSTO+ re-classification of AT2019xis as a light echo of SN 1987A in the LMC.
S. Taubenberger (MPA), D. Malesani (DTU Space), G. Terreran (Northwestern), S. J. Smartt (QUB), A...
Released: 2020-06-25
Views Count: 2149
ATLAS20qoq (AT2020nlb): discovery of a candidate SN in MESSIER 85 (17 Mpc)
A. Townsend (Queen's University Belfast / University of Manchester), K. W. Smith, S. Srivast...
Released: 2020-03-30
Views Count: 2020
Fast Radio Bursts (FRBs) now reported to and distributed via the TNS
O. Yaron, E. Ofek, A. Gal-Yam, A. Sass (Weizmann)

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Released: 2024-10-03
Views Count: 314
Keck Cosmic Web Imager host galaxy redshift of AT2024wpp
Daniel A. Perley (LJMU), Yu-Jing Qin (Caltech), R. Michael Rich (UCLA), Emanuele Daddi (CEA Saclay), Michelle Collins (Surrey),...
Released: 2024-06-27
Views Count: 181
An Upcoming ZTF Experiment: Extended Deep-drilling Observations in the Galactic Plane
Zach Vanderbosch (Caltech), Paula Szkody (UW/Seattle), Tom Prince (Caltech), Eric Bellm (UW/Seattle), Ilaria Caiazzo (ISTA), An...