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IDsort descendingNameRepsClassRADECObj. TypeRedshiftHost NameHost RedshiftReporting Group/sDiscovery Data Source/sClassifying Group/sAssociated Group/sDisc. Internal NameDisc. Instrument/sClass. Instrument/sTNS ATPublicEnd Prop. PeriodObject SpectraDiscovery Mag/FluxDiscovery FilterDiscovery Date (UT)SenderRemarksSourcesBibcodeExt. catalog/s
74421SN 2021J5312:26:27.011+31:13:20.55SN Ia0.002388NGC 44140.002388ALeRCE, YSE, ATLAS, Pan-STARRSZTF, Pan-STARRS, ATLASUCSC, ePESSTO+, ZTFATLAS, Pan-STARRS, ZTFZTF21aaabvitATLAS-MLO - ATLAS-01, P48 - ZTF-Cam, PS1 - GPC1, PS2 - GPC2ESO-NTT - EFOSC2-NTT, FTN - FLOYDS-N, P60 - SEDMYY317.0899g-ZTF2021-01-01 11:44:04.001ALeRCE2021TNSTR...1....1F
AT reports
IDTime Received (UT)SenderReporter/s (Discoverer/s)Reporting GroupDisc. Data SourceRADECDiscovery Date (UT)Discovery Mag.FilterPhotometryRelated FilesAT TypeHost NameHost RedshiftInternal NameAssoc. GroupsEnd Prop. PeriodRemarksBibcode
966842021-01-13 23:38:29PS2_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-STARRSPan-STARRS12:26:27.011+31:13:20.552021-01-02 16:00:28.80016.54z-P11PSNPS21bwPan-STARRS
Photometry
IDObs-date (UT)Mag. / FluxErrLim. Mag./FluxUnitsFilterTel / InstExp-timeObserverRemarks
1864882021-01-02 16:00:2916.540.0620.4ABMagz-P1PS2_GPC2120Robot
963042021-01-09 23:11:21PS1_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-STARRSPan-STARRS12:26:27.016+31:13:20.562021-01-06 15:08:38.40014.22g-P11PSNPS21bwPan-STARRS
Photometry
IDObs-date (UT)Mag. / FluxErrLim. Mag./FluxUnitsFilterTel / InstExp-timeObserverRemarks
1856242021-01-06 15:08:3814.2221ABMagg-P1PS1_GPC120Robot
960162021-01-07 21:27:46ATLAS_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 (Queen's University Belfast), T.-W. Chen (MPE), D. E. Wright (University of Minnesota), J. Anderson (ESO)ATLASATLAS12:26:27.016+31:13:20.582021-01-07 13:56:38.40013.972orange-ATLAS2PSNATLAS21auiATLAS
Photometry
IDObs-date (UT)Mag. / FluxErrLim. Mag./FluxUnitsFilterTel / InstExp-timeObserverRemarks
1848352021-01-07 13:56:3813.9720.00619.7ABMagorange-ATLASATLAS-MLO_ATLAS-0130Robot
1848342021-01-03 15:01:2619.06ABMagorange-ATLASATLAS-MLO_ATLAS-0130Robot[Last non detection]
958822021-01-07 01:27:19YSE_Bot1D. O. Jones (UC Santa Cruz), K. D. French (Carnegie, Illinois), A. Agnello, C. R. Angus, Z. Ansari, N. Arendse, C. Gall, C. Grillo, S. H. Bruun, C. Hede, J. Hjorth, L. Izzo, H. Korhonen, S. Raimundo, D. Kodi Ramanah, A. Sarangi, R. Wojtak, H. Pfister (DARK, U Copenhagen), K. Auchettl (DARK, UC Santa Cruz, U Melbourne), K. C. Chambers, M. E. Huber, E. A. Magnier, T. J. L. de Boer, J. R. Fairlamb, C. C. Lin, R. J. Wainscoat, T. Lowe, M. Willman, J. Bulger, A. S. B. Schultz (IfA, Hawaii), A. Engel, A. Gagliano, G. Narayan, M. Soraisam (Illinois), Q. Wang (JHU), A. Rest (JHU, STScI), S. J. Smartt, K. W. Smith (Queen's University Belfast), K. Alexander, A. Baldeschi, P. Blanchard, D. Coppejans, L. DeMarchi, A. Hajela, W. Jacobson-Galan, R. Margutti, D. Matthews, C. Stauffer, M. Stroh, G. Terreran (Northwestern), M. Drout (U Toronto), D. A. Coulter, G. Dimitriadis, R. J. Foley, T. Hung, C. D. Kilpatrick, C. Rojas-Bravo, M. R. Siebert (UC Santa Cruz), E. Ramirez-Ruiz (UC Santa Cruz, DARK)YSEPan-STARRS12:26:27.015+31:13:20.572021-01-06 15:08:38.40014.22g-P11PSNPS21bwPan-STARRS
Photometry
IDObs-date (UT)Mag. / FluxErrLim. Mag./FluxUnitsFilterTel / InstExp-timeObserverRemarks
1845932021-01-06 15:08:3814.2221ABMagg-P1PS1_GPC120Robot
952592021-01-01 16:43:48ALeRCEF. Forster, F.E. Bauer, A. Munoz-Arancibia, G. Pignata, L. Hernandez-Garcia, L. Galbany, G. Pignata, E. Camacho, J. Silva-Farfan, A. Mourao, J. Arredondo, G. Cabrera-Vives, R. Carrasco-Davis, P.A. Estevez, P. Huijse, E. Reyes, I. Reyes, P. Sanchez-Saez, C. Valenzuela, E. Castillo, D. Ruz-Mieres, D. Rodriguez-Mancini, M. Catelan, S. Eyheramendy, M.J. Graham on behalf of the ALeRCE brokerALeRCEZTF12:26:27.031+31:13:20.592021-01-01 11:44:04.00117.0899g-ZTF2PSNNGC 44140.002388ZTF21aaabvitZTFEarly SN candidate (g-rise > 0.28+-0.01 mag/day) classified using ALeRCE's stamp classifier - see http://arxiv.org/abs/2008.03309 - and the public ZTF stream. Discovery image and light curve in http://alerce.online/object/ZTF21aaabvit 2021TNSTR...1....1F
Photometry
IDObs-date (UT)Mag. / FluxErrLim. Mag./FluxUnitsFilterTel / InstExp-timeObserverRemarks
1830972021-01-01 11:44:0417.08990.075267919.3555ABMagg-ZTFP48_ZTF-Cam30RobotData provided by ZTF
1830962020-12-23 12:57:0618.412ABMagg-ZTFP48_ZTF-Cam30Robot[Last non detection] Data provided by ZTF
Classification reports
IDTime Received (UT)SenderClassifier/sGroupClassificationRedshiftSpectraRelated FilesAssoc. GroupsEnd Prop. PeriodRemarksADS Bibcode
84822021-01-06 23:37:09ZTF_Bot1A. Dahiwale, C. Fremling(Caltech) on behalf of the Zwicky Transient Facility (ZTF)ZTFSN Ia0.0023881ZTF2021TNSCR..66....1D
Spectra
IDObs-date (UT)Tel / InstExp-timeObserver/sReducer/sGroupSpectrum ascii FileSpectrum fits FileSpec. TypeAssoc. GroupsEnd Prop. PeriodRemarks
84942021-01-04 09:12:09P60_SEDM2160SEDmRobotautoZTF tns_2021J_2021-01-04_09-12-09.452781_P60_SEDM_ZTF.asciiObjectZTF
84132021-01-04 18:36:20ePESSTOplus_Bot1J. Gillanders, K. W. Smith, S. Srivastav, I. Irani on behalf of ePESSTO+ePESSTO+SN Ia0.00241ePESSTO+2021TNSCR..35....1G
Spectra
IDObs-date (UT)Tel / InstExp-timeObserver/sReducer/sGroupSpectrum ascii FileSpectrum fits FileSpec. TypeAssoc. GroupsEnd Prop. PeriodRemarks
84252021-01-04 08:25:59ESO-NTT_EFOSC2-NTT300J. Gillanders, K. W. SmithS. SrivastavePESSTO+ tns_2021J_2021-01-04_08-25-59_ESO-NTT_EFOSC2-NTT_ePESSTO+.asci tns_2021J_2021-01-04_08-25-59_ESO-NTT_EFOSC2-NTT_ePESSTO+.fitsObjectePESSTO+
84092021-01-04 17:53:25msiebertM. R. Siebert, R. J. Foley (UCSC)UCSCSN Ia0.00241UCSCThe spectrum has some host-galaxy contamination, but still has distinct supernova features. In particular, we identify Si II 6355 with a minimum blueshifted by -16,300 km/s. The spectrum is consistent with some very young SNe Ia (e.g., SN 2002bo at -14 days), although with some color mismatch. The continuum is relatively flat (in f_lambda) from 4000-10,000 A, slightly increasing to the blue. There is no obvious Na D absorption in the spectrum, although narrow H alpha and Ca H&K absorption, presumably from the host galaxy, are present. There is therefore no obvious dust extinction from indirect indicators. Assuming a Cepheid distance to NGC 4414 (also the host to SN Ia 1974G and SN IIb 2013df), mu = 31.1 mag (Freedman et al., 2001, ApJ, 553, 47), and Milky Way reddening of A_g = 0.064 mag (Schlafly & Finkbeiner, 2011, ApJ, 737, 103), the current brightness (g = 16.1 mag) corresponds to an absolute magnitude of M_g = -15.1 mag. This luminosity is consistent with a young Type Ia supernova.2021TNSCR..37....1S
Spectra
IDObs-date (UT)Tel / InstExp-timeObserver/sReducer/sGroupSpectrum ascii FileSpectrum fits FileSpec. TypeAssoc. GroupsEnd Prop. PeriodRemarks
84212021-01-04 12:28:24FTN_FLOYDS-N900M. R. SiebertM. R. SiebertUCSC tns_2021J_2021-01-04_12-28-24_FTN_FLOYDS-N_UCSC.flmObjectUCSC
Spectra
IDObs-date (UT)Tel / InstExp-timeObserver/sReducer/sGroupSpectrum ascii FileSpectrum fits FileSpec. TypeAssoc. GroupsEnd Prop. PeriodRemarks
84212021-01-04 12:28:24FTN / FLOYDS-N900M. R. SiebertM. R. SiebertUCSC tns_2021J_2021-01-04_12-28-24_FTN_FLOYDS-N_UCSC.flmObjectUCSC
84942021-01-04 09:12:09P60 / SEDM2160SEDmRobotautoZTF tns_2021J_2021-01-04_09-12-09.452781_P60_SEDM_ZTF.asciiObjectZTF
84252021-01-04 08:25:59ESO-NTT / EFOSC2-NTT300J. Gillanders, K. W. SmithS. SrivastavePESSTO+ tns_2021J_2021-01-04_08-25-59_ESO-NTT_EFOSC2-NTT_ePESSTO+.asci tns_2021J_2021-01-04_08-25-59_ESO-NTT_EFOSC2-NTT_ePESSTO+.fitsObjectePESSTO+