SN 2018gtg
RA/DEC (2000)
01:57:26.22 +08:55:02.54
29.35926875 +8.91737125
Type
SN Ia
Redshift
0.108
Source Group
ATLAS
Discovery Date
2018-09-14 13:49:26
TNS AT
Y
Public
Y
Discovery Mag
19.693
Filter
cyan-ATLAS
Discoverer/s
J. Tonry, B. Stalder, L. Denneau, A. Heinze, H. Weiland (IfA, University of Hawaii), A. Rest (STScI), K. W. Smith, S. J. Smartt, D. R. Young, M. Fulton, O. McBrien, D. O'Neill, P. Clark (Queen's University Belfast)
 2018-09-21 23:56:32 LT / SPRAT
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Spectra
IDObs-date (UT)Tel / InstExp-TimeObserver/sReducer/sGroupSpectrum ascii fileSpectrum fits fileSpec. TypeAssoc. GroupsEnd prop. periodRemarks
28092018-09-21 23:56:32LT / SPRAT800S. Prentice tns_2018gtg_2018-09-21_23-56-32_LT_SPRAT.txtObject
Light Curves
FilterTel / InstObs-date rangePhotometry
cyan-ATLASATLAS1_ACAM12018-09-14 13:49:26 - 2018-09-14 13:49:261
Photometry
IDObs-dateMag. / FluxErrLim. Mag./FluxUnitsFilterTel / InstExp-timeObserver/sRemarks
365302018-09-14 13:49:2619.6930.19419.64ABMagcyan-ATLASATLAS1_ACAM130Robot
orange-ATLASATLAS1_ACAM12018-09-11 14:45:36 - 2018-09-11 14:45:361
Photometry
IDObs-dateMag. / FluxErrLim. Mag./FluxUnitsFilterTel / InstExp-timeObserver/sRemarks
365292018-09-11 14:45:3619.31ABMagorange-ATLASATLAS1_ACAM130Robot[Last non detection]
AT Reportings
IDTime received (UT)SenderReporter/s (Discoverer/s)GroupRADECDiscovery date (UT)Discovery Mag.FilterRelated filesAT TypeInternal nameAssoc. GroupsEnd prop. periodRemarks
230342018-09-23 13:34:47ATLAS_Bot1J. Tonry, B. Stalder, L. Denneau, A. Heinze, H. Weiland (IfA, University of Hawaii), A. Rest (STScI), K. W. Smith, S. J. Smartt, D. R. Young, M. Fulton, O. McBrien, D. O'Neill, P. Clark (Queen's University Belfast)ATLAS01:57:26.22+08:55:02.542018-09-14 13:49:2619.693cyan-ATLASPSNATLAS18vmuATLAS
Classification Reportings
IDTime received (UT)SenderClassifier/sGroupClassificationRedshiftRelated filesAssoc. GroupsEnd prop. periodRemarks
28022018-09-23 14:22:22Simon PrenticeS. J. Prentice, K. W. Smith (QUB)SN Ia0.108Classification was attempted with both DASH (https://github.com/daniel-muthukrishna/astrodash) and Gelato (Harutyunyan et al., 2008, A&A, 488, 383), matches were found with SNe Ia a few days before maximum light at redshifts between 0.09 and 0.11. The best fit model of was 91T-like SN 1998es at z = 0.108 although confidence in this result is limited by the low S/N of the classification spectrum.