RA/DEC (2000)
20:17:54.740 +03:13:57.20
304.478083 +3.232556
Type
SN Ia
Redshift
0.05
Discovery ReportClassification Report
Reporting Group
Global SN Project
Discovering Data Source
ZTF
Discovery Date
2021-10-04 06:05:06.000
TNS AT
Y
Public
Y
Host Name
2MASS J20175477+0313574
Discovery Mag
17.9
Filter
g-ZTF
Reporter/s
Megan Newsome (LCO/UCSB)
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

 ▌SN_2021acej - 2021-10-24 10:12:52 FTS / FLOYDS-S (Global SN Project)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
▌Show [O II] at z=vexp= km/s
▌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
▌Show Å at z=vexp= km/s
▌Show Å at z=vexp= km/s
▌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

 ▌Other_Other_g
   
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
11202 2021-10-24 10:12:52 FTS / FLOYDS-S 3600 Las Cumbres Observatory Megan Newsome Global SN Project tns_2021acej_2021-10-24_10-12-52_FTS_FLOYDS-S_Global_SN_Project.ascii Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
g-ZTF Other_Other 2021-10-04 06:05:06 - 2021-10-04 06:05:06 2459491.7535417 - 2459491.7535417 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
248929 2021-10-04 06:05:06 2459491.7535417 17.9 0.047 ABMag g-ZTF Other_Other Instrument: ZTF-Cam
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
126881 2021-10-25 22:35:39 Megan Newsome Megan Newsome (LCO/UCSB) Global SN Project ZTF 20:17:54.740 +03:13:57.20 2021-10-04 06:05:06.000 17.9 g-ZTF PSN 2MASS J20175477+0313574 ZTF21acftror Global SN Project 2021TNSTR3634....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
11148 2021-10-25 22:44:05 Megan Newsome Megan Newsome (UCSB/Las Cumbres), Yael Dgany (TAU), Iair Arcavi (TAU), Jamison Burke (LCO/UCSB), Daichi Hiramatsu (LCO/UCSB), D. Andrew Howell (LCO/UCSB), Curtis McCully (LCO/UCSB), Estefania Padilla Gonzalez (LCO/UCSB), Craig Pellegrino (LCO/UCSB) Global SN Project SN Ia 0.05 1 2 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 after maximum light, including SN 2008c 4 days after peak and SN 2007s 6 days after peak. The supernova is closest to 2MASS J20175477+0313574. SNID finds a best-fit redshift of z = 0.05. Using this redshift we measure a Si II 6355 velocity of approximately 10,000 km/s. Adopting the distance modulus computed from this redshift (36.6), the g-band absolute magnitude of the object roughly coeval with the spectrum is -18.58 (apparent magnitude 18.06, from ZTF). This absolute magnitude and velocity is consistent with an SN Ia after maximum light. 2021TNSCR3640....1N
Related files
File Comments Last Modified (UT) Modified By
tns_2021acej_classrep_11148_Global_SN_Project.ps 2021-10-25 22:44:05 Megan Newsome
tns_2021acej_classrep_11148_Global_SN_Project_0.ps 2021-10-25 22:44:05 Megan Newsome
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
11202 2021-10-24 10:12:52 FTS / FLOYDS-S 3600 Las Cumbres Observatory Megan Newsome Global SN Project tns_2021acej_2021-10-24_10-12-52_FTS_FLOYDS-S_Global_SN_Project.ascii Object

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