SN 2017grw
RA/DEC (2000)
15:57:29.70 +15:52:21.94
239.37374 +15.87276
Type
SN Ia
Redshift
0.017
Source Group
ASAS-SN
Discovery Date
2017-09-11 23:31:12
TNS AT
Y
Public
Y
Host Name
NGC 6018
Host Redshift
0.017405
Discovery Mag
16.5
Filter
V-Johnson
Discoverer/s
K. Z. Stanek, for the ASAS-SN team
 2017-09-14 06:34:46 FTN / FLOYDS-N (Global SN Project)
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Spectra
IDObs-date (UT)Tel / InstExp-TimeObserver/sReducer/sGroupSpectrum ascii fileSpectrum fits fileSpec. TypeAssoc. GroupsEnd prop. periodRemarks
12162017-09-14 06:34:46FTN / FLOYDS-N1800Las Cumbres ObservatoryGriffin HosseinzadehGlobal SN Project tns_2017grw_2017-09-14_06-34-46_FTN_FLOYDS-N_Global_SN_Project.ascii tns_2017grw_2017-09-14_06-34-46_FTN_FLOYDS-N_Global_SN_Project.fitsObjectGlobal SN Project
Light Curves
FilterTel / InstObs-date rangePhotometry
V-JohnsonASASSN-2_Cassius2017-08-31 00:00:00 - 2017-09-11 23:31:122
Photometry
IDObs-dateMag. / FluxErrLim. Mag./FluxUnitsFilterTel / InstExp-timeObserver/sRemarks
203502017-09-11 23:31:1216.5VegaMagV-JohnsonASASSN-2_Cassius
203492017-08-31 00:00:0017.3VegaMagV-JohnsonASASSN-2_Cassius[Last non detection]
AT Reportings
IDTime received (UT)SenderReporter/s (Discoverer/s)GroupRADECDiscovery date (UT)Discovery Mag.FilterRelated filesAT TypeInternal nameAssoc. GroupsEnd prop. periodRemarks
136092017-09-12 01:51:20KZStanekK. Z. Stanek, for the ASAS-SN teamASAS-SN15:57:29.70+15:52:21.942017-09-11 23:31:1216.5V-JohnsonPSNASASSN-17lzASAS-SNIn two epochs, near the core, so could also be a TDE
Classification Reportings
IDTime received (UT)SenderClassifier/sGroupClassificationRedshiftRelated filesAssoc. GroupsEnd prop. periodRemarks
12122017-09-14 21:38:36griffinGriffin Hosseinzadeh, Iair Arcavi, D. Andrew Howell, Curtis McCully, Stefano ValentiGlobal SN ProjectSN Ia0.017Global SN ProjectUsing SNID (Blondin & Tonry 2007, ApJ, 666, 1024), we find several good fits to the normal Type Ia supernovae in the week before maximum light at redshifts consistent with that of the proposed host galaxy (z=0.017; Barmby & Huchra 1998, AJ, 115, 6 via NED). The supernova is highly extinguished by its host galaxy, making a more precise phase estimate difficult.

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