RA/DEC (2000)
17:05:08.591 +07:59:26.05
256.2857941 +7.9905695
Type
SN Ia
Redshift
0.03034
Discovery ReportClassification Report
Reporting Group
ZTF
Discovering Data Source
ZTF
Discovery Date
2019-03-15 11:33:50.000
TNS AT
Y
Public
Y
Discovery Mag
17.69
Filter
g-ZTF
Reporter/s
J. Nordin, V. Brinnel, M. Giomi, J. van Santen (HU Berlin), A. Gal-Yam, O. Yaron, S. Schulze (Weizmann) on behalf of ZTF
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

 ▌SN_2019byw - 2019-04-20 09:33:55 P60 / SEDM (ZTF)z=
 ▌SN_2019byw - 2019-03-31 11:31:12 Lick-3m / KAST (ASAS-SN)z=
 ▌SN_2019byw - 2019-03-30 23:49:09 Ekar / AFOSC (Padova-Asiago)z=
▌Show H at z=vexp= km/s
▌Show He at z=vexp= km/s
▌Show He II at z=vexp= km/s
▌Show C II at z=vexp= km/s
▌Show C III at z=vexp= km/s
▌Show C IV at z=vexp= km/s
▌Show N II at z=vexp= km/s
▌Show N III at z=vexp= km/s
▌Show N IV at z=vexp= km/s
▌Show N V at z=vexp= km/s
▌Show O at z=vexp= km/s
▌Show [O I] at z=vexp= km/s
▌Show O II at z=vexp= km/s
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▌Show [O III] at z=vexp= km/s
▌Show O V at z=vexp= km/s
▌Show O VI at z=vexp= km/s
▌Show Na at z=vexp= km/s
▌Show Mg at z=vexp= km/s
▌Show Mg II at z=vexp= km/s
▌Show Si II at z=vexp= km/s
▌Show S II at z=vexp= km/s
▌Show Ca II at z=vexp= km/s
▌Show [Ca II] at z=vexp= km/s
▌Show Fe II at z=vexp= km/s
▌Show Fe III at z=vexp= km/s
▌Show Å at z=vexp= km/s
▌Show Å at z=vexp= km/s
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▌Show Tellurics 
▌Show Galaxy lines at z=
▌Show WR-WN at z=vexp= km/s
▌Show WR-WC/O at z=vexp= km/s
   Binning factor: (rounded to nearest integer >1)
Mouse hovers at WL: 0 (rest),0 (observed)

Light curves

 ▌P48_ZTF-Cam_r
 ▌P48_ZTF-Cam_g
 ▌ATLAS-MLO_ATLAS-01_orange
   
Pointer position (MJD, Mag, Abs.Mag): (0.00, 0.00, 0.00)
Spectra
 ID Obs-date (UT) Tel / Inst Exp-Time Observer/s Reducer/s Group Spectrum ascii file Spectrum fits file Spec. Type Assoc. Groups End prop. period Remarks
5132 2019-04-20 09:33:55 P60 / SEDM 1200 SEDmRobot auto ZTF tns_2019byw_2019-04-20_09-33-55_P60_SEDM_ZTF.ascii Object
3885 2019-03-31 11:31:12 Lick-3m / KAST T. G. Brink T. G. Brink ASAS-SN tns_2019byw_2019-03-31.48_Lick-3m_KAST_ASAS-SN.txt Object
3765 2019-03-30 23:49:09 Ekar / AFOSC 2700 Ochner Benetti, Tomasella Padova-Asiago tns_2019byw_2019-03-30_23-49-09_Ekar_AFOSC_Padova-Asiago.dat tns_2019byw_2019-03-30_23-49-09_Ekar_AFOSC_Padova-Asiago.fits Object The spectrum of this nuclear transient shows broad hydrogen and HeII lines superimposed to the host galaxy features. Considering both the extinction in the Galaxy (A_V ~ 0.236 mag from Schlafly & Finkbeiner 2011) and in the host galaxy (A_V ~ 2.7 mag estimated from the interstellar NaID absorption) the corrected spectrum exhibits a blue continuum and the absolute magnitude is about ~ -20.6 mag (assuming a distance modulus of 35.64 mag, via NED). All this makes of AT2019byw a possible TDE event.
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
r-ZTF P48_ZTF-Cam 2019-03-18 11:00:53 - 2019-03-18 11:00:53 2458560.9589468 - 2458560.9589468 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
56153 2019-03-18 11:00:53 2458560.9589468 17.29 0.07 19.68 ABMag r-ZTF P48_ZTF-Cam 30
g-ZTF P48_ZTF-Cam 2019-03-15 11:33:50 - 2019-03-15 11:33:50 2458557.9818287 - 2458557.9818287 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
56152 2019-03-15 11:33:50 2458557.9818287 17.69 0.07 19.98 ABMag g-ZTF P48_ZTF-Cam 30
orange-ATLAS ATLAS-MLO_ATLAS-01 2019-03-14 15:43:12 - 2019-03-18 14:16:48 2458557.155 - 2458561.095 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
59904 2019-03-18 14:16:48 2458561.095 17.261 0.041 19.04 ABMag orange-ATLAS ATLAS-MLO_ATLAS-01 30 Robot
59903 2019-03-14 15:43:12 2458557.155 19.12 ABMag orange-ATLAS ATLAS-MLO_ATLAS-01 30 Robot [Last non detection]
AT Reports
ID Time received (UT) Sender Reporter/s Reporting group Disc. Data Source RA DEC Discovery date (UT) Discovery Mag. Filter Related files AT Type Host name Internal name Assoc. Groups End prop. period Remarks ADS Bibcode Unreal Auto classification
32419 2019-04-09 09:41:24 ATLAS_Bot1 J. Tonry, L. Denneau, A. Heinze et al. ATLAS ATLAS 17:05:08.634 +07:59:25.62 2019-03-18 14:16:48.000 17.261 orange-ATLAS PSN ATLAS19etn ATLAS N
30979 2019-03-18 12:12:41 ZTF_AMPEL_NEW J. Nordin, V. Brinnel, M. Giomi et al. ZTF ZTF 17:05:08.591 +07:59:26.05 2019-03-15 11:33:50.000 17.69 g-ZTF PSN ZTF19aamkywr ZTF 2019TNSTR.404....1N N
Classification Reports
ID Time received (UT) Sender Classifier/s Group Classification Redshift Spectra Related files Assoc. Groups End prop. period Remarks ADS Bibcode
5124 2019-09-19 04:58:03 ZTF_Bot1 C. Fremling,A. Dahiwale, A. Dugas,(Caltech) on behalf of the Zwicky Transient Facility (ZTF) ZTF SN Ia 0.03034 1 ZTF 2019TNSCR2861....1F
Spectra
ID Obs-date (UT) Tel / Inst Exp-Time Observer/s Reducer/s Group Spectrum ascii file Spectrum fits file Spec. Type Assoc. Groups End prop. period Remarks
5132 2019-04-20 09:33:55 P60 / SEDM 1200 SEDmRobot auto ZTF tns_2019byw_2019-04-20_09-33-55_P60_SEDM_ZTF.ascii Object
3878 2019-04-16 17:25:50 Subhash Bose Subhash Bose, Subo Dong, T. G. Brink, W. Zheng, Thomas de Jaeger, and A. V. Filippenko ASAS-SN SN Ia 0.030758 1 ASAS-SN 2019TNSCR2791....1B
Spectra
ID Obs-date (UT) Tel / Inst Exp-Time Observer/s Reducer/s Group Spectrum ascii file Spectrum fits file Spec. Type Assoc. Groups End prop. period Remarks
3885 2019-03-31 11:31:12 Lick-3m / KAST T. G. Brink T. G. Brink ASAS-SN tns_2019byw_2019-03-31.48_Lick-3m_KAST_ASAS-SN.txt Object
3758 2019-04-02 10:00:30 Lina Tomasella Ochner, Benetti, Cappellaro, Tomasella, Turatto (INAF OAPd) Padova-Asiago TDE 0.0307 1 Padova-Asiago The spectrum of this nuclear transient shows broad hydrogen and HeII lines superimposed to the host galaxy features. Considering both the extinction in the Galaxy (A_V ~ 0.236 mag from Schlafly & Finkbeiner 2011) and in the host galaxy (A_V ~ 2.7 mag estimated from the interstellar NaID absorption) the corrected spectrum exhibits a blue continuum and the absolute magnitude is about ~ -20.6 mag (assuming a distance modulus of 35.64 mag, via NED). All this makes of AT2019byw a possible TDE event. 2019TNSCR.487....1O
Spectra
ID Obs-date (UT) Tel / Inst Exp-Time Observer/s Reducer/s Group Spectrum ascii file Spectrum fits file Spec. Type Assoc. Groups End prop. period Remarks
3765 2019-03-30 23:49:09 Ekar / AFOSC 2700 Ochner Benetti, Tomasella Padova-Asiago tns_2019byw_2019-03-30_23-49-09_Ekar_AFOSC_Padova-Asiago.dat tns_2019byw_2019-03-30_23-49-09_Ekar_AFOSC_Padova-Asiago.fits Object The spectrum of this nuclear transient shows broad hydrogen and HeII lines superimposed to the host galaxy features. Considering both the extinction in the Galaxy (A_V ~ 0.236 mag from Schlafly & Finkbeiner 2011) and in the host galaxy (A_V ~ 2.7 mag estimated from the interstellar NaID absorption) the corrected spectrum exhibits a blue continuum and the absolute magnitude is about ~ -20.6 mag (assuming a distance modulus of 35.64 mag, via NED). All this makes of AT2019byw a possible TDE event.

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