SN 2016blk
RA/DEC (2000)
03:22:12.725 -44:05:39.48
50.55302 -44.0943
Type
SN Ia
Redshift
0.02997
Source Group
ASAS-SN
Discovery Date
2016-04-02 23:31:12
TNS AT
Y
Public
Y
Host Name
APMUKS(BJ) B032028.93-441621.0
Host Redshift
0.02997
Discovery Mag
16.3
Filter
V-Johnson
Discoverer/s
J. Brimacombe, K. Z. Stanek, for the ASAS-SN team

Spectra

 SN_2016blk - 2016-04-09 23:20:43 Magellan-Baade / IMACS (None)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
1962016-04-09 23:20:43Magellan-Baade / IMACSJ. L. PrietoNone tns_2016blk_2457488.47273_Magellan-Baade_IMACS.txt tns_2016blk_2457488.47273_Magellan-Baade_IMACS.fitsObjectWe obtained an optical spectrum (range 420-940nm; resolution ~5 Angstroms) of ASASSN-16dx/AT2016blk (ATel #8898, TNS) on UT 2016 Apr. 10.0 with IMACS mounted on the Magellan 6.5-m Baade telescope.
Light Curves
FilterTel / InstObs-date rangePhotometry
V-JohnsonASASSN-2_Cassius2016-03-23 00:28:48 - 2016-04-02 23:31:123
Photometry
IDObs-dateMag. / FluxErrLim. Mag./FluxUnitsFilterTel / InstExp-timeObserver/sRemarks
19852016-04-02 23:31:1216.30.117.2VegaMagV-JohnsonASASSN-2_Cassius
19862016-03-28 00:14:2416.90.1517.4VegaMagV-JohnsonASASSN-2_Cassius
19842016-03-23 00:28:4816.7VegaMagV-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
17702016-04-03 14:55:46KZStanekJ. Brimacombe, K. Z. Stanek, for the ASAS-SN teamASAS-SN03:22:12.725-44:05:39.482016-04-02 23:31:1216.3V-JohnsonPSNASASSN-16dxASAS-SNRedshift for the host galaxy not listed on NED, but listed on Vizier.
Classification Reportings
IDTime received (UT)SenderClassifier/sGroupClassificationRedshiftRelated filesAssoc. GroupsEnd prop. periodRemarks
1892016-04-11 20:45:40jlprietoJ. L. Prieto, B. J. ShappeeNoneSN Ia0.02997The spectrum shows characteristics of a (likely peculiar) Type Ia supernova. Cross-correlation with a library of supernova spectra using the "Supernova Identification" code (SNID; Blondin & Tonry 2007, ApJ, 666, 1024) and chi2-by-eye shows that the best matches are the spectra of SN2007if ("super-chandra") and SN2002ic (Ia-CSM) a few days after max, but there are also reasonably good matches with some SN1991T-like SNe. After correcting the spectrum for the redshift of the host galaxy (z=0.02997 from 6dF), we measure a Si II 635.5nm expansion velocity of ~12000 km/s.