SN 2019dks
RA/DEC (2000)
11:44:05.600 -04:40:25.24
176.0233321 -4.6736766
SN Ia-91T-like
Source Group
Discovery Date
2019-04-10 06:04:39
Discovery Mag
J. Nordin, V. Brinnel, M. Giomi, J. van Santen (HU Berlin), A. Gal-Yam, O. Yaron, S. Schulze (Weizmann) on behalf of ZTF


 SN_2019dks - 2019-04-20 21:31:39 P60 / SEDM (ZTF)z=
 SN_2019dks - 2019-04-19 08:48:50 FTN / FLOYDS-N (Global SN Project)z=
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   Binning factor: (rounded to nearest integer >1)
Mouse hovers at WL: 0 (rest),0 (observed)
SelectIDObs-date (UT)Tel / InstExp-TimeObserver/sReducer/sGroupSpectrum ascii fileSpectrum fits fileSpec. TypeAssoc. GroupsEnd prop. periodRemarks
39632019-04-20 21:31:39P60 / SEDM2250SEDmRobotautoZTF tns_2019dks_2019-04-20_21-31-39_P60_SEDM_ZTF.asciiObjectZTF
39122019-04-19 08:48:50FTN / FLOYDS-N3600Las Cumbres ObservatoryJamison BurkeGlobal SN Project tns_2019dks_2019-04-19_08-48-50_FTN_FLOYDS-N_Global_SN_Project.ascii tns_2019dks_2019-04-19_08-48-50_FTN_FLOYDS-N_Global_SN_Project.fitsObjectGlobal SN Project
Light Curves
FilterTel / InstObs-date rangePhotometry
orange-ATLASATLAS1_ACAM12019-04-11 10:33:36 - 2019-04-15 09:56:092
IDObs-dateMag. / FluxErrLim. Mag./FluxUnitsFilterTel / InstExp-timeObserver/sRemarks
617562019-04-15 09:56:0918.1650.13918.56ABMagorange-ATLASATLAS1_ACAM130Robot
617552019-04-11 10:33:3618.65ABMagorange-ATLASATLAS1_ACAM130Robot[Last non detection]
r-ZTFP48_ZTF-Cam2019-04-07 06:36:50 - 2019-04-13 05:31:443
IDObs-dateMag. / FluxErrLim. Mag./FluxUnitsFilterTel / InstExp-timeObserver/sRemarks
613972019-04-13 05:31:4418.710.0820.1ABMagr-ZTFP48_ZTF-Cam30
613982019-04-10 06:04:3919.760.1920.04ABMagr-ZTFP48_ZTF-Cam30
613962019-04-07 06:36:5020.4323ABMagr-ZTFP48_ZTF-Cam30[Last non detection]
AT Reportings
IDTime received (UT)SenderReporter/s (Discoverer/s)GroupRADECDiscovery date (UT)Discovery Mag.FilterRelated filesAT TypeInternal nameAssoc. GroupsEnd prop. periodRemarks
331452019-04-15 13:19:43ATLAS_Bot1J. Tonry, L. Denneau, A. Heinze, H. Weiland, H. Flewelling (IfA, University of Hawaii), B. Stalder (LSST), A. Rest (STScI), C. Stubbs (Harvard University), K. W. Smith, S. J. Smartt, D. R. Young, O. McBrien, D. O'Neill, P. Clark, M. Fulton, A. McCormack (Queen's University Belfast), D. E. Wright (University of Minnesota)ATLAS11:44:05.599-04:40:25.472019-04-15 09:56:0918.165orange-ATLASPSNATLAS19hhzATLAS
330082019-04-13 13:19:55ZTF_AMPEL_NEWJ. Nordin, V. Brinnel, M. Giomi, J. van Santen (HU Berlin), A. Gal-Yam, O. Yaron, S. Schulze (Weizmann) on behalf of ZTFZTF11:44:05.600-04:40:25.242019-04-10 06:04:3918.71r-ZTFPSNZTF19aaprzcrZTF
Classification Reportings
IDTime received (UT)SenderClassifier/sGroupClassificationRedshiftRelated filesAssoc. GroupsEnd prop. periodRemarks
39562019-05-01 01:04:24ZTF_Bot1C. Fremling, A. Dugas (Caltech), Y. Sharma (IIT Bombay) on behalf of the Zwicky Transient Facility (ZTF)ZTFSN Ia-91T-like0.057ZTF
39052019-04-19 22:13:17jburkeJamison Burke, Iair Arcavi, D. Andrew Howell, Daichi Hiramatsu, Curtis McCully, Stefano ValentiGlobal SN ProjectSN Ia-91T-like0.057Global SN ProjectUsing Superfit (Howell et al. 2005, ApJ, 634, 1190) and SNID (Blondin & Tonry 2007, ApJ, 666, 1024), we find good fits to several 91T-like Type Ia supernovae a few days to a week before maximum. The best-fit redshift from both SNID and Superfit is 0.057. Verification of this redshift is difficult, as the faint host (GALEXASC J114405.72-044028.8) can be seen in archival PanSTARRS images, but does not have a redshift listed in NED. There are also no obvious host spectral lines to measure the redshift. Assuming this redshift, we measure a Si II velocity of about 12,000 km/s and a Ca II velocity of about 13,000 km/s. We measure a B-band absolute magnitude of -19.5 and rising at a similar epoch as the spectrum. The object’s absolute magnitude and dwarf galaxy host indicate that it could be a super-Chandrasekhar event.