SN 2021ct
RA/DEC (2000)
14:47:02.625 +56:18:53.61
221.76093806154 +56.314891461538
Type
SN Ia
Redshift
0.0375
Reporting Group
ALeRCE
Discovering Data Source
ZTF
Discovery Date
2021-01-03 11:15:45.999
TNS AT
Y
Public
Y
Host Name
WISEA J144702.66+561851.4
Host Redshift
0.037513
Discovery Mag
19.1517
Filter
r-ZTF
Reporter/s
F. Forster, F.E. Bauer, G. Pignata, A. Munoz-Arancibia, L. Hernandez-Garcia, L. Galbany, G. Pignata, E. Camacho, J. Silva-Farfan, A. Mourao, J. Arredondo, G. Cabrera-Vives, R. Carrasco-Davis, P.A. Estevez, P. Huijse, E. Reyes, I. Reyes, P. Sanchez-Saez, C. Valenzuela, E. Castillo, D. Ruz-Mieres, D. Rodriguez-Mancini, M. Catelan, S. Eyheramendy, M.J. Graham on behalf of the ALeRCE broker

Spectra

 SN_2021ct - 2021-01-14 14:13:12 FTN / FLOYDS-N (None)z=
 SN_2021ct - 2021-01-14 10:22:06 P60 / SEDM (ZTF)z=
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   Binning factor: (rounded to nearest integer >1)
Mouse hovers at WL: 0 (rest),0 (observed)
Spectra
SelectIDObs-date (UT)Tel / InstExp-TimeObserver/sReducer/sGroupSpectrum ascii fileSpectrum fits fileSpec. TypeAssoc. GroupsEnd prop. periodRemarks
85832021-01-14 14:13:12FTN / FLOYDS-N3600Las Cumbres ObservatoryNone tns_2021ct_2021-01-14_14-13-12_FTN_FLOYDS-N.asciiObject
86112021-01-14 10:22:06P60 / SEDM2700SEDmRobotautoZTF tns_2021ct_2021-01-14_10-22-06.337348_P60_SEDM_ZTF.asciiObjectZTF
Light Curves
FilterTel / InstObs-date rangePhotometry
orange-ATLASATLAS1_ACAM12021-01-02 14:31:12 - 2021-01-08 14:45:362
Photometry
IDObs-dateMag. / FluxErrLim. Mag./FluxUnitsFilterTel / InstExp-timeObserver/sRemarks
1852292021-01-08 14:45:3618.4140.09619.54ABMagorange-ATLASATLAS1_ACAM130Robot
1852282021-01-02 14:31:1218.57ABMagorange-ATLASATLAS1_ACAM130Robot[Last non detection]
g-ZTFP48_ZTF-Cam2021-01-01 11:50:55 - 2021-01-03 13:17:312
Photometry
IDObs-dateMag. / FluxErrLim. Mag./FluxUnitsFilterTel / InstExp-timeObserver/sRemarks
1834882021-01-03 13:17:3119.11650.18019219.2174ABMagg-ZTFP48_ZTF-Cam30RobotData provided by ZTF
1834862021-01-01 11:50:5519.1204ABMagg-ZTFP48_ZTF-Cam30Robot[Last non detection] Data provided by ZTF
r-ZTFP48_ZTF-Cam2021-01-01 11:22:28 - 2021-01-03 11:15:463
Photometry
IDObs-dateMag. / FluxErrLim. Mag./FluxUnitsFilterTel / InstExp-timeObserver/sRemarks
1869732021-01-03 11:15:4619.15170.1520919.9774ABMagr-ZTFP48_ZTF-Cam30RobotData provided by ZTF, classified by Fink
1834872021-01-03 11:15:4619.15170.1520919.9774ABMagr-ZTFP48_ZTF-Cam30RobotData provided by ZTF
1869722021-01-01 11:22:2819.0072ABMagr-ZTFP48_ZTF-Cam30Robot[Last non detection] Data provided by ZTF, classified by Fink
AT Reports
IDTime received (UT)SenderReporter/sReportting groupDisc. Data SourceRADECDiscovery date (UT)Discovery Mag.FilterRelated filesAT TypeInternal nameAssoc. GroupsEnd prop. periodRemarks
968972021-01-15 20:16:03FinkJulien Peloton, Anais Moller, Emille E. O. Ishida on behalf of the Fink brokerFinkZTF14:47:02.625+56:18:53.612021-01-03 11:15:45.99919.1517r-ZTFPSNZTF21aaaosmnZTFEarly SN candidate classified by Fink using the public ZTF stream. Object data at http://134.158.75.151:24000/ZTF21aaaosmn
961552021-01-08 21:45:17ATLAS_Bot1J. Tonry, L. Denneau, A. Heinze, H. Weiland (IfA, University of Hawaii), B. Stalder (LSST), A. Rest (STScI), C. Stubbs (Harvard University), K. W. Smith, S. J. Smartt, D. R. Young, S. Srivastav, O. McBrien, M. Fulton, J. Gillanders (Queen's University Belfast), T.-W. Chen (MPE), D. E. Wright (University of Minnesota), J. Anderson (ESO)ATLASATLAS14:47:02.623+56:18:53.702021-01-08 14:45:36.00018.414orange-ATLASPSNATLAS21axdATLAS
954042021-01-03 20:12:24ALeRCEF. Forster, F.E. Bauer, G. Pignata, A. Munoz-Arancibia, L. Hernandez-Garcia, L. Galbany, G. Pignata, E. Camacho, J. Silva-Farfan, A. Mourao, J. Arredondo, G. Cabrera-Vives, R. Carrasco-Davis, P.A. Estevez, P. Huijse, E. Reyes, I. Reyes, P. Sanchez-Saez, C. Valenzuela, E. Castillo, D. Ruz-Mieres, D. Rodriguez-Mancini, M. Catelan, S. Eyheramendy, M.J. Graham on behalf of the ALeRCE brokerALeRCEZTF14:47:02.637+56:18:53.772021-01-03 11:15:45.99919.1517r-ZTFPSNZTF21aaaosmnZTFEarly SN candidate (g-rise > 0.09+-0.01 mag/day, r-rise > 0.10+-0.01 mag/day) classified using ALeRCE's stamp classifier - see http://arxiv.org/abs/2008.03309 - and the public ZTF stream. Discovery image and light curve in http://alerce.online/object/ZTF21aaaosmn
Classification Reports
IDTime received (UT)SenderClassifier/sGroupClassificationRedshiftRelated filesAssoc. GroupsEnd prop. periodRemarksADS Bibcode
85992021-01-18 17:32:32ZTF_Bot1A. Dahiwale, C. Fremling(Caltech) on behalf of the Zwicky Transient Facility (ZTF)ZTFSN Ia0.0375ZTF2021TNSCR.193....1D
85712021-01-15 16:40:42cpellegrinoCraig Pellegrino (LCO/UCSB), Yael Dgany (TAU), Iair Arcavi (TAU), Jamison Burke (LCO/UCSB), Daichi Hiramatsu (LCO/UCSB), D. Andrew Howell (LCO/UCSB), Curtis McCully (LCO/UCSB), Estefania Padilla Gonzalez (LCO/UCSB)NoneSN Ia-91bg-like0.037Using Superfit (Howell et al. 2005, ApJ, 634, 1190) and SNID (Blondin & Tonry 2007, ApJ, 666, 1024), we find best fits to 91bg-like SNe Ia ~7 days after maximum light, including SN 2006H. This phase is consistent with the ZTF lightcurve. The supernova is closest to WISEA J144702.66+561851.4, and we measure a redshift of approximately 0.037 based on narrow host galaxy lines present in the spectrum. Adopting this redshift we measure a Si II 6355 velocity of approximately 9000 km/s.2021TNSCR.158....1P

Comments

Object coordinates updated according to AT-report 96897 of Group ZTF
Previous RA, DEC: 14:47:02.637, +56:18:53.77 (221.7609855, +56.3149367)
Updated RA, DEC: 14:47:02.625, +56:18:53.61 (221.76093806154, 56.314891461538)