RA/DEC (2000)
07:28:08.020 -62:21:28.91
112.033417 -62.358031
Type
SN Ia
Redshift
0.010814
Discovery ReportClassification Report
Reporting Group
DLT40
Discovering Data Source
DLT40
Discovery Date
2020-10-22 16:41:01.824
TNS AT
Y
Public
Y
Host Name
IC2200
Discovery Mag
16.5191
Filter
Clear-
Reporter/s
S. Valenti, D.J.Sand, S. Wyatt, M. Lundquist, R. Amaro, J. Andrews, J. Jencson, Y. Dong
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

 ▌SN_2020xyw - 2020-10-22 17:08:11 FTS / FLOYDS-S (Global SN Project)z=
▌Show H at z=vexp= km/s
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▌Show N II at z=vexp= km/s
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▌Show O at z=vexp= km/s
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▌Show Mg at z=vexp= km/s
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▌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
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▌Show Tellurics 
▌Show Galaxy lines at z=
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▌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

 ▌Gaia_Gaia-photometric_G
 ▌Other_Other_Clear
   
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
7777 2020-10-22 17:08:11 FTS / FLOYDS-S 1200 Las Cumbres Observatory Jamison Burke Global SN Project tns_2020xyw_2020-10-22_17-08-11_FTS_FLOYDS-S_Global_SN_Project.ascii tns_2020xyw_2020-10-22_17-08-11_FTS_FLOYDS-S_Global_SN_Project.fits Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
G-Gaia Gaia_Gaia-photometric 2020-09-19 15:10:05 - 2020-10-26 12:34:34 2459112.132 - 2459149.024 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
173994 2020-10-26 12:34:34 2459149.024 15.37 0.2 ABMag G-Gaia Gaia_Gaia-photometric 60 Robot
173993 2020-09-19 15:10:05 2459112.132 21.5 ABMag G-Gaia Gaia_Gaia-photometric Robot [Last non detection]
Clear- Other_Other 2020-10-20 15:04:52 - 2020-10-22 16:31:46 2459143.12838 - 2459145.18873 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
167362 2020-10-22 16:31:46 2459145.18873 16.5191 0.1 ABMag Clear- Other_Other 60 Robot Prompt5 0.4m
167361 2020-10-20 15:04:52 2459143.12838 17.5179 ABMag Clear- Other_Other 60 Robot [Last non detection] Prompt5 0.4m
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
90539 2020-11-23 10:53:03 Gaia_Bot1 S.T. Hodgkin, E. Breedt, A. Delgado et al. GaiaAlerts GaiaAlerts 07:28:08.020 -62:21:28.91 2020-10-26 12:34:33.600 15.37 G-Gaia PSN Gaia20fjh GaiaAlerts confirmed SN Ia N
87181 2020-10-22 16:41:04 DLT40_bot1 S. Valenti, D.J.Sand, S. Wyatt et al. DLT40 DLT40 07:28:07.980 -62:21:28.95 2020-10-22 16:41:01.824 16.5191 Clear- PSN IC2200 DLT20q DLT40 2020TNSTR3205....1V N
Classification Reports
ID Time received (UT) Sender Classifier/s Group Classification Redshift Spectra Related files Assoc. Groups End prop. period Remarks ADS Bibcode
7763 2020-10-22 22:09:02 Jamison Burke J. Burke, D. J. Sand, R. Amaro, J. Andrews, Y. Dong, D. Hiramatsu, D. A. Howell, J. Jencson, M. Lundquist, C. McCully, E. Padilla Gonzalez, C. Pellegrino, S. Valenti, S. Wyatt Global SN Project SN Ia 0.010814 1 1 Global SN Project Using Superfit (Howell et al. 2005, ApJ, 634, 1190) and SNID (Blondin & Tonry 2007, ApJ, 666, 1024), we find best fits to SNe Ia, including SN 2006bt five days before peak. The supernova is closest to IC 2200A (z = 0.010814, D_L~46.7 Mpc, DM~33.35; 2003AJ....126.2268W; values from NED). Adopting this redshift, we measure velocities of approximately 14,000 km/s for the Si II 6355 line, and approximately 16,000 km/s for the Ca II NIR triplet. The strength of the Si II 5872 line indicates an underluminous SN Ia, although all reasonable SNID fits are to normal SNe Ia and not like 91bg-like SNe Ia. We note a relatively high Milky Way reddening of E(B-V)=0.163, based on the Schlafly & Finkbeiner (2011) recalibration of the Schlegel, Finkbeiner & Davis (1998) dust map (value from NED). The high velocities, blue continuum (after correcting for extinction), two day non-detection from DLT40 (TNS TR No. 87181), and Si line ratio indicates this is a young, underluminous SN Ia, probably within a few days of its explosion. Further followup is encouraged. 2020TNSCR3212....1B
Related files
File Comments Last Modified (UT) Modified By
tns_2020xyw_classrep_7763_Global_SN_Project.ps 2020-10-22 22:09:02 Jamison Burke
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
7777 2020-10-22 17:08:11 FTS / FLOYDS-S 1200 Las Cumbres Observatory Jamison Burke Global SN Project tns_2020xyw_2020-10-22_17-08-11_FTS_FLOYDS-S_Global_SN_Project.ascii tns_2020xyw_2020-10-22_17-08-11_FTS_FLOYDS-S_Global_SN_Project.fits Object

Comments

TNS
System

Mon, 11/23/2020 - 10:30

Object coordinates updated

Object coordinates updated according to AT-report 90539 of Group GaiaAlerts
Previous RA, DEC: 07:28:07.980, -62:21:28.95 (112.03325, -62.358042)
Updated RA, DEC: 07:28:08.020, -62:21:28.91 (112.033417, -62.358031)