SN 2017zu
RA/DEC (2000)
16:58:37.37 +50:29:25.55
254.65569 50.49043
Type
SN II
Redshift
0.01
Source Group
ASAS-SN
Discoverer
K. Z. Stanek, for the ASAS-SN team
Discovery Date
2017-02-01 15:36:00
TNS AT
Y
Public
Y
Host Name
SBS 1657+505
Host Redshift
0.0102
Discovery Mag
17
Discovery Mag Filter
V-Johnson
 2017-02-24 11:23:30 MDM-2.4 / OSMOS (ASAS-SN)
 2017-02-04 21:21:36 LJT / YFOSC
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Spectra
IDObs-date (UT)Tel / InstExp-TimeObserver/sReducer/sGroupSpectrum ascii fileSpectrum fits fileSpec. TypeAssoc. GroupsEnd prop. periodRemarks
8312017-02-24 11:23:30MDM-2.4 / OSMOSJ. KlusmeyerASAS-SN tns_2017zu_2457808.9746602_MDM-2.4_OSMOS_ASAS-SN.txt tns_2017zu_2457808.9746602_MDM-2.4_OSMOS_ASAS-SN.fitsObjectASAS-SN
7772017-02-04 21:21:36LJT / YFOSC900Kaixin LuJujia Zhang tns_2017zu_2017-02-04.89_LJT_YFOSC.datObjectPTSS
Light Curves
FilterTel / InstObs-date rangePhotometry
V-JohnsonASASSN-1_Brutus2017-01-20 16:04:48 - 2017-02-01 15:36:003
Photometry
IDObs-dateMag. / FluxErrLim. Mag./FluxUnitsFilterTel / InstExp-timeObserver/sRemarks
125512017-02-01 15:36:00170.117.8VegaMagV-JohnsonASASSN-1_Brutus
125522017-01-25 15:36:0017.60.218VegaMagV-JohnsonASASSN-1_Brutus
125502017-01-20 16:04:4817.5VegaMagV-JohnsonASASSN-1_Brutus[Last non detection]
AT Reportings
IDTime received (UT)SenderReporter/s (Discoverer/s)GroupRADECDiscovery date (UT)Discovery Mag.FilterRelated filesAT TypeInternal nameAssoc. GroupsEnd prop. periodRemarks
84432017-02-01 18:11:32KZStanekK. Z. Stanek, for the ASAS-SN teamASAS-SN16:58:37.37+50:29:25.552017-02-01 15:36:0017V-JohnsonPSNASASSN-17bwASAS-SNIn two epochs, on the rise
Classification Reportings
IDTime received (UT)SenderClassifier/sGroupClassificationRedshiftRelated filesAssoc. GroupsEnd prop. periodRemarks
8212017-02-27 18:49:57jlprietoJ. L. PrietoASAS-SNSN IIASAS-SNWe obtained an optical spectrum of ASASSN-17bw on UT 2017 Feb. 24.47 with OSMOS (range 4000-6850 Angstroms, R ~ 2000) mounted on the MDM 2.4m telescope at KPNO. The spectrum shows strong Balmer and Fe II lines with P-Cygni profiles characteristic of a Type II SN, with strong host galaxy contamination (including nebular emission lines). After correcting the spectrum for the redshift of the host galaxy, we measure an expansion velocity from the H-alpha line of 5800 km/s from the minimum of the P-Cygni trough
7672017-02-05 02:45:49xwangJujia Zhang, Kaixin Lu (YNAO), Xiaofeng Wang (Tsinghua University)AGN0.01PTSSA spectrum taken on Feb. 04.89 indicates that this transient is consistent with that of a AGN.

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