SN 2021yyu
RA/DEC (2000)
00:35:10.704 +01:37:44.03
8.7946 +1.6288969666666666
Type
SN Ia
Redshift
0.066
Reporting Group
ALeRCE
Discovering Data Source
ZTF
Discovery Date
2021-09-15 09:26:51.999
TNS AT
Y
Public
Y
Host Name
SDSS J003510.72+013742.9
Discovery Mag
19.8377
Filter
r-ZTF
Reporter/s
A. Munoz-Arancibia, F. Forster, F.E. Bauer, G. Pignata, 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_2021yyu - 2021-09-19 14:43:57 FTS / FLOYDS-S (Global SN Project)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
109552021-09-19 14:43:57FTS / FLOYDS-S3600Las Cumbres ObservatoryJamison BurkeGlobal SN Project tns_2021yyu_2021-09-19_14-43-57_FTS_FLOYDS-S_Global_SN_Project.ascii tns_2021yyu_2021-09-19_14-43-57_FTS_FLOYDS-S_Global_SN_Project.fitsObjectGlobal SN Project
Light Curves
FilterTel / InstObs-date rangePhotometry
orange-ATLASATLAS-HKO_ATLAS-022021-09-17 13:36:29 - 2021-09-17 13:36:291
Photometry
IDObs-dateMag. / FluxErrLim. Mag./FluxUnitsFilterTel / InstExp-timeObserver/sRemarks
2438732021-09-17 13:36:2919.23ABMagorange-ATLASATLAS-HKO_ATLAS-0230Robot[Last non detection]
orange-ATLASATLAS-MLO_ATLAS-012021-09-27 10:58:05 - 2021-09-27 10:58:051
Photometry
IDObs-dateMag. / FluxErrLim. Mag./FluxUnitsFilterTel / InstExp-timeObserver/sRemarks
2438742021-09-27 10:58:0518.4090.12319.14ABMagorange-ATLASATLAS-MLO_ATLAS-0130Robot
g-ZTFP48_ZTF-Cam2021-09-15 09:56:41 - 2021-09-15 09:56:411
Photometry
IDObs-dateMag. / FluxErrLim. Mag./FluxUnitsFilterTel / InstExp-timeObserver/sRemarks
2421982021-09-15 09:56:4119.64290.12854520.5899ABMagg-ZTFP48_ZTF-Cam30RobotData provided by ZTF
r-ZTFP48_ZTF-Cam2021-09-13 09:59:47 - 2021-09-15 09:27:323
Photometry
IDObs-dateMag. / FluxErrLim. Mag./FluxUnitsFilterTel / InstExp-timeObserver/sRemarks
2421972021-09-15 09:27:3219.68130.1794320.2784ABMagr-ZTFP48_ZTF-Cam30RobotData provided by ZTF
2421962021-09-15 09:26:5219.83770.14214820.4037ABMagr-ZTFP48_ZTF-Cam30RobotData provided by ZTF
2421952021-09-13 09:59:4720.3402ABMagr-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
1244572021-09-27 23:58:15ATLAS_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, M. Fulton, J. Gillanders, C. Richman (Queen's University Belfast), T.-W. Chen (MPE), D. E. Wright (University of Minnesota), J. Anderson (ESO)ATLASATLAS00:35:10.690+01:37:43.872021-09-27 10:58:04.80018.409orange-ATLASPSNATLAS21bjexATLAS
1236112021-09-15 20:39:50ALeRCEA. Munoz-Arancibia, F. Forster, F.E. Bauer, G. Pignata, 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 brokerALeRCEZTF00:35:10.704+01:37:44.032021-09-15 09:26:51.99919.8377r-ZTFPSNZTF21accibaeALeRCEEarly SN candidate (g-rise > 0.37+-0.06 mag/day, r-rise > 0.25+-0.07 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/ZTF21accibae
Classification Reports
IDTime received (UT)SenderClassifier/sGroupClassificationRedshiftRelated filesAssoc. GroupsEnd prop. periodRemarksADS Bibcode
109012021-09-21 18:36:59jburkeJamison Burke (LCO/UCSB), Iair Arcavi (TAU), Daichi Hiramatsu (LCO/UCSB), D. Andrew Howell, Curtis McCully, Megan Newsome, Estefania Padilla Gonzalez, Craig PellegrinoGlobal SN ProjectSN Ia0.066Global SN ProjectUsing Superfit (Howell et al. 2005, ApJ, 634, 1190) and SNID (Blondin & Tonry 2007, ApJ, 666, 1024), we find best fits to rising SNe Ia. The supernova is closest to WISEA J003510.71+013743.1, which has no listed redshift. We adopt the best-fit redshift from the snid fits, z=0.066. Adopting this redshift we measure a Si II 6355 velocity of approximately 10,000 km/s. Adopting the distance modulus computed from this redshift (37.4), the g-band absolute magnitude of the object roughly coeval with the spectrum is -18.5 (apparent magnitude 18.9, from ZTF). This absolute magnitude and velocity is consistent with a pre-peak SN Ia. 2021TNSCR3258....1B