RA/DEC (2000)
01:20:46.569 +44:31:44.92
20.194038350016 +44.5291453
Type
SN Ia
Redshift
0.072
Discovery ReportClassification Report
Reporting Group
ALeRCE
Discovering Data Source
ZTF
Discovery Date
2025-01-02 03:29:31.001
TNS AT
Y
Public
Y
Host Name
SDSS J012046.60+443144.9
Discovery Mag
19.4149
Filter
r-ZTF
Reporter/s
F. Forster, F.E. Bauer, G. Pignata, A. Munoz-Arancibia, A. Mourao, L. Hernandez-Garcia, L. Galbany, J. Silva-Farfan, R. Dastidar, J.P. Brandt, A. Alvarez, G. Cabrera-Vives, R. Carrasco-Davis, P.A. Estevez, B. Gamboa, P. Huijse, H. Larranaga, C. Mansilla, K. Medina, D. Moreno, E. Munoz, E. Pizarro, I. Reyes, P. Sanchez-Saez, D. Rodriguez-Mancini, M. Catelan, S. Eyheramendy, M.J. Graham on behalf of the ALeRCE broker
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

 ▌SN_2025bq - 2025-01-06 22:11:37 NOT / ALFOSC (None)z=
▌Show H at z=vexp= km/s
▌Show He at z=vexp= km/s
▌Show He II at z=vexp= km/s
▌Show C II at z=vexp= km/s
▌Show C III at z=vexp= km/s
▌Show C IV at z=vexp= km/s
▌Show N II at z=vexp= km/s
▌Show N III at z=vexp= km/s
▌Show N IV at z=vexp= km/s
▌Show N V at z=vexp= km/s
▌Show O at z=vexp= km/s
▌Show [O I] at z=vexp= km/s
▌Show O II at z=vexp= km/s
▌Show [O II] at z=vexp= km/s
▌Show [O III] at z=vexp= km/s
▌Show O V at z=vexp= km/s
▌Show O VI at z=vexp= km/s
▌Show Na at z=vexp= km/s
▌Show Mg at z=vexp= km/s
▌Show Mg II at z=vexp= km/s
▌Show Si II at z=vexp= km/s
▌Show S II at z=vexp= km/s
▌Show Ca II at z=vexp= km/s
▌Show [Ca II] at z=vexp= km/s
▌Show Fe II at z=vexp= km/s
▌Show Fe III at z=vexp= km/s
▌Show Å at z=vexp= km/s
▌Show Å at z=vexp= km/s
▌Show Å at z=vexp= km/s
▌Show Å at z=vexp= km/s
▌Show Tellurics 
▌Show Galaxy lines at z=
▌Show WR-WN at z=vexp= km/s
▌Show WR-WC/O at z=vexp= km/s
   Binning factor: (rounded to nearest integer >1)
Mouse hovers at WL: 0 (rest),0 (observed)

Light curves

 ▌P48_ZTF-Cam_r_
   
Pointer position (MJD, Mag, Abs.Mag): (0.00, 0.00, 0.00)
Spectra
 ID Obs-date (UT) Tel / Inst Exp-Time Observer/s Reducer/s Group Spectrum ascii file Spectrum fits file Spec. Type Assoc. Groups End prop. period Remarks
20051 2025-01-06 22:11:37 NOT / ALFOSC 1200 Tapio Pursimo Panos Charalampopoulos None tns_2025bq_2025-01-06_22-11-36.528_NOT_ALFOSC_None.ascii Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
r-ZTF P48_ZTF-Cam 2024-12-31 04:18:17 - 2025-01-04 03:59:31 2460675.6793634 - 2460679.666331 3
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
460929 2025-01-04 03:59:31 2460679.666331 19.1718 0.10075 20.3553 ABMag r-ZTF P48_ZTF-Cam 30 Robot Data provided by ZTF
460928 2025-01-02 03:29:31 2460677.6454977 19.4149 0.114447 20.6089 ABMag r-ZTF P48_ZTF-Cam 30 Robot Data provided by ZTF
460927 2024-12-31 04:18:17 2460675.6793634 20.4915 ABMag r-ZTF P48_ZTF-Cam 30 Robot [Last non detection] Data provided by ZTF
AT Reports
ID Time received (UT) Sender Reporter/s Reporting group Disc. Data Source RA DEC Discovery date (UT) Discovery Mag. Filter Related files AT Type Host name Internal name Assoc. Groups End prop. period Remarks Bibcode Unreal Auto classification
240461 2025-01-04 18:58:31 ALeRCE F. Forster,F.E. Bauer,G. Pignata et al. ALeRCE ZTF 01:20:46.569 +44:31:44.92 2025-01-02 03:29:31.001 19.4149 r-ZTF PSN SDSS J012046.60+443144.9 ZTF25aaaawig ZTF Early SN candidate (r-rise > 0.55+-0.06 mag/day) classified using ALeRCE's stamp classifier (Carrasco-Davis et al. 2021) and the public ZTF stream. Discovery image and light curve in http://alerce.online/object/ZTF25aaaawig 2025TNSTR..43....1F N
Classification Reports
ID Time received (UT) Sender Classifier/s Group Classification Redshift Spectra Related files Assoc. Groups End prop. period Remarks ADS Bibcode
20051 2025-01-07 10:22:27 Panos Charalampopoulos Panos Charalampopoulos None SN Ia 0.072 1 1 We report the classification of AT2025bq as a Ia supernova based on an optical spectrum obtained with the Nordic Optical Telescope on 2025-01-06 (i.e., MJD 60681.93). The transient is coincident with the nucleus of the host galaxy. Comparison with a library of supernovae spectra using SNID (Blondin & Tonry 2007, ApJ, 666, 1024), suggests AT2025bq is an around peak SN Ia at a redshift of z~0.072. 2025TNSCR..98....1C
Related files
File Comments Last Modified (UT) Modified By
tns_2025bq_atrep_20051.png Classifications were done using SNID (Blondin & Tonry 2007 2007ApJ...666.1024B). 2025-01-07 10:22:27 Panos Charalampopoulos
Spectra
ID Obs-date (UT) Tel / Inst Exp-Time Observer/s Reducer/s Group Spectrum ascii file Spectrum fits file Spec. Type Assoc. Groups End prop. period Remarks
20051 2025-01-06 22:11:37 NOT / ALFOSC 1200 Tapio Pursimo Panos Charalampopoulos None tns_2025bq_2025-01-06_22-11-36.528_NOT_ALFOSC_None.ascii Object

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