SN 2018byw
RA/DEC (2000)
21:38:16.82 -27:33:28.69
324.57008 -27.55797
Type
SN Ia
Redshift
0.029991
Source Group
ASAS-SN
Discovery Date
2018-05-24 06:14:24
TNS AT
Y
Public
Y
Host Name
2MASX J21381685-2733285
Host Redshift
0.029991
Discovery Mag
17
Filter
g-Sloan
Discoverer/s
J. V. Shields, K. Z. Stanek, for the ASAS-SN team
 2018-05-26 19:01:55 FTS / FLOYDS-S (Global SN Project)
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Spectra
IDObs-date (UT)Tel / InstExp-TimeObserver/sReducer/sGroupSpectrum ascii fileSpectrum fits fileSpec. TypeAssoc. GroupsEnd prop. periodRemarks
20742018-05-26 19:01:55FTS / FLOYDS-S2700Las Cumbres ObservatoryDaichi HiramatsuGlobal SN Project tns_2018byw_2018-05-26_19-01-55_FTS_FLOYDS-S_Global_SN_Project.ascii tns_2018byw_2018-05-26_19-01-55_FTS_FLOYDS-S_Global_SN_Project.fitsObjectGlobal SN Project
Light Curves
FilterTel / InstObs-date rangePhotometry
orange-ATLASATLAS1_ACAM12018-05-25 14:32:38 - 2018-05-31 13:19:122
Photometry
IDObs-dateMag. / FluxErrLim. Mag./FluxUnitsFilterTel / InstExp-timeObserver/sRemarks
293372018-05-31 13:19:1216.820.07417.97ABMagorange-ATLASATLAS1_ACAM130Robot
293362018-05-25 14:32:3818.05ABMagorange-ATLASATLAS1_ACAM130Robot[Last non detection]
G-GaiaGaia_Gaia-photometric2018-05-01 09:36:00 - 2018-05-30 19:37:552
Photometry
IDObs-dateMag. / FluxErrLim. Mag./FluxUnitsFilterTel / InstExp-timeObserver/sRemarks
296782018-05-30 19:37:5516.510.2ABMagG-GaiaGaia_Gaia-photometric60Robot
296772018-05-01 09:36:0021.5ABMagG-GaiaGaia_Gaia-photometricRobot[Last non detection]
g-SloanASASSN-3_Paczynski2018-05-24 06:14:24 - 2018-05-24 06:14:241
Photometry
IDObs-dateMag. / FluxErrLim. Mag./FluxUnitsFilterTel / InstExp-timeObserver/sRemarks
290172018-05-24 06:14:2417ABMagg-SloanASASSN-3_Paczynski
g-SloanASASSN-5_Payne-Gaposchkin2018-05-19 01:26:24 - 2018-05-19 01:26:241
Photometry
IDObs-dateMag. / FluxErrLim. Mag./FluxUnitsFilterTel / InstExp-timeObserver/sRemarks
290162018-05-19 01:26:2418.2ABMagg-SloanASASSN-5_Payne-Gaposchkin[Last non detection]
AT Reportings
IDTime received (UT)SenderReporter/s (Discoverer/s)GroupRADECDiscovery date (UT)Discovery Mag.FilterRelated filesAT TypeInternal nameAssoc. GroupsEnd prop. periodRemarks
191932018-06-08 10:00:34Gaia_Bot1A. Delgado, D. Harrison, S. Hodgkin, M. van Leeuwen, G. Rixon, A. Yoldas (University of Cambridge), on behalf of Gaia Alerts teamGaiaAlerts21:38:16.80-27:33:27.862018-05-30 19:37:5516.51G-GaiaPSNGaia18bldGaiaAlertsconfirmed SN Ia near centre of galaxy 2MASX J21381685-2733285, aka SN 2018byw
190192018-06-01 09:29:45ATLAS_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)ATLAS21:38:16.86-27:33:28.702018-05-31 13:19:1216.82orange-ATLASPSNATLAS18qabATLAS
188522018-05-25 17:58:01KZStanekJ. V. Shields, K. Z. Stanek, for the ASAS-SN teamASAS-SN21:38:16.82-27:33:28.692018-05-24 06:14:2417g-SloanPSNASASSN-18leASAS-SNNuclear transient, so could also be a TDE
Classification Reportings
IDTime received (UT)SenderClassifier/sGroupClassificationRedshiftRelated filesAssoc. GroupsEnd prop. periodRemarks
20692018-05-27 06:37:11dhiramatsuDaichi Hiramatsu, Iair Arcavi, Jamison Burke, Griffin Hosseinzadeh, D. Andrew Howell, Curtis McCully, Stefano ValentiGlobal SN ProjectSN Ia0.029991Global SN ProjectUsing Superfit (Howell et al. 2005, ApJ, 634, 1190) and SNID (Blondin & Tonry 2007, ApJ, 666, 1024), we find several good fits to normal Type Ia SNe around maximum light at the redshift of the proposed host galaxy (z=0.030; Jones et al. 2009, "The 6dF Galaxy Survey Data Release 3," via NED).

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