RA/DEC (2000)
03:13:35.700 -02:09:06.37
48.39875 -2.151769
Type
TDE
Redshift
0.027
Discovery ReportClassification Report
Related AstroNotes: 2024-37, 2024-53, 2024-56
Reporting Group
ZTF
Discovering Data Source
ZTF
Discovery Date
2020-10-20 09:46:04.800
TNS AT
Y
Public
Y
Comments
[Prefix updated to TDE by admin on 2025-01-26]
Discovery Mag
19.99
Filter
g-ZTF
Reporter/s
C. Fremling (Caltech) on behalf of the Zwicky Transient Facility (ZTF) collaboration
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

 ▌TDE_2020afhd - 2024-02-13 10:36:20 FTS / FLOYDS-S (StarDestroyers)z=
 ▌TDE_2020afhd - 2024-01-05 00:00:00 P60 / SEDM (ZTF)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

 ▌ATLAS-CHL_ATLAS-04_orange
 ▌P48_ZTF-Cam_r
 ▌P48_ZTF-Cam_g
 ▌Gaia_Gaia-photometric_G
 ▌ATLAS-HKO_ATLAS-02_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
16662 2024-02-13 10:36:20 FTS / FLOYDS-S 1800 Robotic M. Newsome StarDestroyers tns_2020afhd_2024-02-13_10-36-20_FTS_FLOYDS-S_StarDestroyers.ascii tns_2020afhd_2024-02-13_10-36-20_FTS_FLOYDS-S_StarDestroyers.fits Object
16593 2024-01-05 00:00:00 P60 / SEDM ZTF ZTF tns_2020afhd_2024-01-05_00-00-00_P60_SEDM_ZTF.txt Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
orange-ATLAS ATLAS-CHL_ATLAS-04 2024-01-10 01:40:58 - 2024-01-10 01:40:58 2460319.57012 - 2460319.57012 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
388654 2024-01-10 01:40:58 2460319.57012 18.225 0.1 19.37 ABMag orange-ATLAS ATLAS-CHL_ATLAS-04 30 Robot
r-ZTF P48_ZTF-Cam 2020-10-20 08:41:17 - 2020-10-20 08:41:17 2459142.862 - 2459142.862 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
385454 2020-10-20 08:41:17 2459142.862 20.64 ABMag r-ZTF P48_ZTF-Cam 30 ZTF [Last non detection]
g-ZTF P48_ZTF-Cam 2020-10-20 09:46:05 - 2024-01-13 06:54:43 2459142.907 - 2460322.788 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
385456 2024-01-13 06:54:43 2460322.788 17.66 ABMag g-ZTF P48_ZTF-Cam 30 ZTF
385455 2020-10-20 09:46:05 2459142.907 19.99 ABMag g-ZTF P48_ZTF-Cam 30 ZTF
G-Gaia Gaia_Gaia-photometric 2023-09-11 22:13:26 - 2024-02-14 11:48:29 2460199.426 - 2460354.992 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
395083 2024-02-14 11:48:29 2460354.992 16.42 0.2 ABMag G-Gaia Gaia_Gaia-photometric 60 Robot
395082 2023-09-11 22:13:26 2460199.426 21.5 ABMag G-Gaia Gaia_Gaia-photometric Robot [Last non detection]
orange-ATLAS ATLAS-HKO_ATLAS-02 2024-01-07 08:18:06 - 2024-01-07 08:18:06 2460316.8459 - 2460316.8459 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
388653 2024-01-07 08:18:06 2460316.8459 19.51 ABMag orange-ATLAS ATLAS-HKO_ATLAS-02 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
205028 2024-03-09 11:25:11 Gaia_Bot1 S.T. Hodgkin, E. Breedt, A. Delgado et al. GaiaAlerts GaiaAlerts 03:13:35.700 -02:09:06.37 2024-02-14 11:48:28.800 16.42 G-Gaia Other Gaia24awm GaiaAlerts Confirmed TDE N
201197 2024-02-04 10:43:26 ATLAS_Bot1 J. Tonry, L. Denneau, H. Weiland et al. ATLAS ATLAS 03:13:35.694 -02:09:05.27 2024-01-10 01:40:58.368 18.225 orange-ATLAS PSN ATLAS24btc ATLAS N
199575 2024-01-13 09:34:30 ZTF_Bot1 C. Fremling (Caltech) on behalf of the Zwicky Transient Facility (ZTF) collaboration ZTF ZTF 03:13:35.667 -02:09:06.21 2020-10-20 09:46:04.800 19.99 g-ZTF PSN ZTF20abwtifz ZTF 2024TNSTR.135....1F N
Classification Reports
ID Time received (UT) Sender Classifier/s Group Classification Redshift Spectra Related files Assoc. Groups End prop. period Remarks ADS Bibcode
16575 2024-02-15 06:58:31 Iair Arcavi Iair Arcavi, Sara Faris (TAU), Megan Newsome (UCSB/LCO), Marzena Sniegowska, Benny Trakhtenbrot (TAU) StarDestroyers Other 0.027 1 StarDestroyers We re-classify this event as a Bowen Fluorescence Flare (BFF) given the He II and strong Balmer emission lines being much narrower than in typical TDEs. We also correct the redshift to 0.027. 2024TNSCR.466....1A
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
16662 2024-02-13 10:36:20 FTS / FLOYDS-S 1800 Robotic M. Newsome StarDestroyers tns_2020afhd_2024-02-13_10-36-20_FTS_FLOYDS-S_StarDestroyers.ascii tns_2020afhd_2024-02-13_10-36-20_FTS_FLOYDS-S_StarDestroyers.fits Object
16506 2024-02-03 21:45:49 Erica Hammerstein E. Hammerstein (UMD), R. Chornock (Berkeley), S. Gezari (STScI), Y. Yao (Berkeley) on behalf of the ZTF TDE Science Working Group ZTF TDE 0.024 1 ZTF 2024TNSCR.336....1H
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
16593 2024-01-05 00:00:00 P60 / SEDM ZTF ZTF tns_2020afhd_2024-01-05_00-00-00_P60_SEDM_ZTF.txt Object

Comments

TNS
System

Sun, 12/22/2024 - 17:58

Object coordinates updated

Object coordinates updated according to AT-report 205028 of Group GaiaAlerts
Previous RA, DEC: 03:13:35.667, -02:09:06.21 (48.3986122, -2.1517241)
Updated RA, DEC: 03:13:35.700, -02:09:06.37 (48.39875, -2.151769)