SN 2021drw
RA/DEC (2000)
17:55:03.132 +12:53:50.02
268.7630509 +12.8972264
Type
SN Ia
Redshift
0.056
Reporting Group
ALeRCE
Discovering Data Source
ZTF
Discovery Date
2021-02-23 11:04:18.998
TNS AT
Y
Public
Y
Host Name
WISEA J175503.37+125343.9
Discovery Mag
18.9523
Filter
r-ZTF
Reporter/s
F. Forster, F.E. Bauer, G. Pignata, A. Munoz-Arancibia, L. Hernandez-Garcia, L. Galbany, 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_2021drw - 2021-03-03 05:00:10 LT / SPRAT (TCD)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)
Spectra
SelectIDObs-date (UT)Tel / InstExp-TimeObserver/sReducer/sGroupSpectrum ascii fileSpectrum fits fileSpec. TypeAssoc. GroupsEnd prop. periodRemarks
90882021-03-03 05:00:10LT / SPRATS. PrenticeTCD tns_2021drw_2021-03-03_05-00-09.671_LT_SPRAT_TCD.txtObjectTCD
Light Curves
FilterTel / InstObs-date rangePhotometry
orange-ATLASATLAS-MLO_ATLAS-012021-02-24 14:31:12 - 2021-03-20 14:34:052
Photometry
IDObs-dateMag. / FluxErrLim. Mag./FluxUnitsFilterTel / InstExp-timeObserver/sRemarks
1998712021-03-20 14:34:0519.1370.14219.7ABMagorange-ATLASATLAS-MLO_ATLAS-0130Robot
1998702021-02-24 14:31:1219.07ABMagorange-ATLASATLAS-MLO_ATLAS-0130Robot[Last non detection]
g-ZTFP48_ZTF-Cam2021-02-23 12:41:02 - 2021-02-23 12:41:021
Photometry
IDObs-dateMag. / FluxErrLim. Mag./FluxUnitsFilterTel / InstExp-timeObserver/sRemarks
1944632021-02-23 12:41:0219.34810.12428420.4625ABMagg-ZTFP48_ZTF-Cam30RobotData provided by ZTF
r-ZTFP48_ZTF-Cam2021-02-21 12:51:55 - 2021-02-23 11:04:192
Photometry
IDObs-dateMag. / FluxErrLim. Mag./FluxUnitsFilterTel / InstExp-timeObserver/sRemarks
1944622021-02-23 11:04:1918.95230.12138819.7057ABMagr-ZTFP48_ZTF-Cam30RobotData provided by ZTF
1944612021-02-21 12:51:5519.5151ABMagr-ZTFP48_ZTF-Cam30Robot[Last non detection] Data provided by ZTF
AT Reports
IDTime received (UT)SenderReporter/sReportting groupDisc. Data SourceRADECDiscovery date (UT)Discovery Mag.FilterRelated filesAT TypeInternal nameAssoc. GroupsEnd prop. periodRemarks
1034532021-03-21 00:42:35ATLAS_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, C. Webb (Queen's University Belfast), T.-W. Chen (MPE), D. E. Wright (University of Minnesota), J. Anderson (ESO)ATLASATLAS17:55:03.111+12:53:49.672021-03-20 14:34:04.80019.137orange-ATLASPSNATLAS21izkATLAS
1003332021-02-23 17:29:26ALeRCEF. Forster, F.E. Bauer, G. Pignata, A. Munoz-Arancibia, L. Hernandez-Garcia, L. Galbany, 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 brokerALeRCEZTF17:55:03.132+12:53:50.022021-02-23 11:04:18.99818.9523r-ZTFPSNZTF21aamwyqlZTFEarly SN candidate (g-rise > 0.11+-0.02 mag/day, r-rise > 0.29+-0.06 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/ZTF21aamwyql
Classification Reports
IDTime received (UT)SenderClassifier/sGroupClassificationRedshiftRelated filesAssoc. GroupsEnd prop. periodRemarksADS Bibcode
90782021-03-03 12:05:59Simon PrenticeS. Prentice, K. Maguire, M. R. Magee, M. Deckers, L. Harvey, J. Terwel (TCD)TCDSN Ia0.056TCDOur Python based classification tool matches this low S/N spectrum with SNe Ia shortly after maximum light. The transient may be under-luminous or suffering from non-negligible host reddening, in addition to Milky Way E(B-V) ~ 0.1 mag. The redshift from the fits to SN Ia is z = 0.056 +- 0.006, note that a narrow peak around 6563 angstroms is the remnants of a cosmic ray.2021TNSCR.664....1P