SN 2021hdt
RA/DEC (2000)
11:34:45.736 +42:57:55.32
173.690564769 +42.9653675914
Type
SN II
Redshift
0.018822
Reporting Group
ZTF
Discovering Data Source
ZTF
Discovery Date
2021-03-27 07:49:55.776
TNS AT
Y
Public
Y
Discovery Mag
18.4846
Filter
g-ZTF
Reporter/s
K. De (Caltech) on behalf of ZTF

Spectra

 SN_2021hdt - 2021-03-30 08:38:20 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)
Spectra
SelectIDObs-date (UT)Tel / InstExp-TimeObserver/sReducer/sGroupSpectrum ascii fileSpectrum fits fileSpec. TypeAssoc. GroupsEnd prop. periodRemarks
92562021-03-30 08:38:20FTN / FLOYDS-N3600Las Cumbres ObservatoryCraig PellegrinoGlobal SN Project tns_2021hdt_2021-03-30_08-38-20_FTN_FLOYDS-N_Global_SN_Project.asciiObjectGlobal SN Project
Light Curves
FilterTel / InstObs-date rangePhotometry
i-SloanPS1_GPC12021-03-30 10:35:02 - 2021-04-03 10:29:172
Photometry
IDObs-dateMag. / FluxErrLim. Mag./FluxUnitsFilterTel / InstExp-timeObserver/sRemarks
2038282021-04-03 10:29:1716.750.0220.7ABMagi-SloanPS1_GPC145Robot
2019152021-03-30 10:35:0217.140.0320.7ABMagi-SloanPS1_GPC145Robot
orange-ATLASATLAS1_ACAM12021-03-27 10:22:05 - 2021-03-31 11:31:122
Photometry
IDObs-dateMag. / FluxErrLim. Mag./FluxUnitsFilterTel / InstExp-timeObserver/sRemarks
2016532021-03-31 11:31:1216.730.06418.46ABMagorange-ATLASATLAS1_ACAM130Robot
2016522021-03-27 10:22:0517.88ABMagorange-ATLASATLAS1_ACAM130Robot[Last non detection]
g-ZTFP48_ZTF-Cam2021-03-27 07:49:56 - 2021-03-27 07:49:561
Photometry
IDObs-dateMag. / FluxErrLim. Mag./FluxUnitsFilterTel / InstExp-timeObserver/sRemarks
2009472021-03-27 07:49:5618.484618.9516ABMagg-ZTFP48_ZTF-Cam30None
r-ZTFP48_ZTF-Cam2021-03-24 06:25:32 - 2021-03-24 06:25:321
Photometry
IDObs-dateMag. / FluxErrLim. Mag./FluxUnitsFilterTel / InstExp-timeObserver/sRemarks
2009462021-03-24 06:25:3219.6067ABMagr-ZTFP48_ZTF-Cam30None[Last non detection]
AT Reports
IDTime received (UT)SenderReporter/sReportting groupDisc. Data SourceRADECDiscovery date (UT)Discovery Mag.FilterRelated filesAT TypeInternal nameAssoc. GroupsEnd prop. periodRemarks
1054262021-04-05 22:31:46PS2_Bot1K. C. Chambers, T. de Boer, J. Bulger, J. Fairlamb, M. Huber, C.-C. Lin, T. Lowe, E. Magnier, A. Schultz, R. J. Wainscoat, M. Willman (IfA, University of Hawaii), K. W. Smith, D. R. Young, O. McBrien, J. Gillanders, S. Srivastav, M. Fulton, S. J. Smartt, D. O'Neill, P. Clark, S. Sim (Queen's University Belfast), D. E. Wright (University of Minnesota)Pan-STARRS1Pan-STARRS111:34:45.736+42:57:55.322021-04-03 10:29:16.80016.75i-SloanPSNPS21ctsPan-STARRS1
1046542021-04-01 18:10:56PS1_Bot1K. C. Chambers, T. de Boer, J. Bulger, J. Fairlamb, M. Huber, C.-C. Lin, T. Lowe, E. Magnier, A. Schultz, R. J. Wainscoat, M. Willman (IfA, University of Hawaii), K. W. Smith, D. R. Young, O. McBrien, J. Gillanders, S. Srivastav, M. Fulton, S. J. Smartt, D. O'Neill, P. Clark, S. Sim (Queen's University Belfast), D. E. Wright (University of Minnesota)Pan-STARRS1Pan-STARRS111:34:45.729+42:57:55.272021-03-30 10:35:02.40017.14i-SloanPSNPS21ctsPan-STARRS1This transient was discovered with the help of citizen science project Supernova Hunters run by Zooniverse. The candidate was identified by volunteers including Henryk Krawczyk, David Maetschke and Meryl Goulbourne
1045152021-03-31 15:09:36ATLAS_Bot1J. Tonry, L. Denneau, A. Heinze, H. Weiland (IfA, University of Hawaii), B. Stalder (LSST), A. Rest (STScI), C. Stubbs (Harvard University), K. W. Smith, S. J. Smartt, D. R. Young, S. Srivastav, O. McBrien, M. Fulton, J. Gillanders, C. Webb (Queen's University Belfast), T.-W. Chen (MPE), D. E. Wright (University of Minnesota), J. Anderson (ESO)ATLASATLAS11:34:45.738+42:57:55.372021-03-31 11:31:12.00016.73orange-ATLASPSNATLAS21jhzATLAS
1040232021-03-27 16:00:37ZTF_CLU_PUBLICK. De (Caltech) on behalf of ZTFZTFZTF11:34:45.736+42:57:55.282021-03-27 07:49:55.77618.4846g-ZTFPSNZTF21aaqugxmZTF
Classification Reports
IDTime received (UT)SenderClassifier/sGroupClassificationRedshiftRelated filesAssoc. GroupsEnd prop. periodRemarksADS Bibcode
92462021-03-30 22:17:44cpellegrinoCraig Pellegrino, Jamison Burke, Daichi Hiramatsu, D. Andrew Howell, Curtis McCully, Estefania Padilla GonzalezGlobal SN ProjectSN II0.018822Global SN ProjectUsing Superfit (Howell et al. 2005, ApJ, 634, 1190) and SNID (Blondin & Tonry 2007, ApJ, 666, 1024), we find best fits to SNe II at early phases. The supernova is closest to WISEA J113445.47+425754.9 (z = 0.018822, 2005SDSS4.C...0000; value from NED). This redshift is well-matched by narrow host hydrogen emission lines. Additionally, the spectrum shows a blue continuum with flash features of He II, C IV, and O III. The B-band absolute magnitude roughly coeval with the spectrum is approximately -17.85 (apparent magnitude 16.65), which is roughly two magnitudes brighter than the previous ZTF g-band detection two days prior. This rapid rise along with the flash features and blue continuum indicate that the SN is young. Further followup is encouraged.2021TNSCR.963....1P

Comments

Object coordinates updated according to AT-report 105426 of Group Pan-STARRS1
Previous RA, DEC: 11:34:45.729, +42:57:55.27 (173.690538595, +42.9653525719)
Updated RA, DEC: 11:34:45.736, +42:57:55.32 (173.690564769, 42.9653675914)

Object coordinates updated according to AT-report 104654 of Group Pan-STARRS1
Previous RA, DEC: 11:34:45.736, +42:57:55.28 (173.6905653, +42.9653557)
Updated RA, DEC: 11:34:45.729, +42:57:55.27 (173.690538595, 42.9653525719)