RA/DEC (2000)
22:57:39.470 +40:32:40.02
344.414458 +40.54445
Type
TDE
Redshift
0.036
Reporting Group
GOTO
Discovering Data Source
GOTO
Discovery Date
2023-06-23 02:13:16.320
TNS AT
Y
Public
Y
Comments
[Prefix updated to TDE by admin on 2025-01-26]
Discovery Mag
18.84
Filter
L-GOTO
Reporter/s
B. Godson, B.Gompertz, R. Kotak, M. Kennedy, E. Stanyway, K. Ulaczyk, K. Ackley, J. Lyman, D. Steeghs, D. K. Galloway, V. Dhillon, P. O'Brien, G. Ramsay, D. Pollacco, S. Poshyachinda, L. Nuttall, E. Pallé, D. O'Neill, M. Dyer, T. Killestein, on behalf of GOTO collaboration

Spectra

 TDE_2023lli - 2023-06-28 12:58:03 UH88 / SNIFS (SCAT)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

 GOTO-N_GOTO-1_L
 Gaia_Gaia-photometric_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
15204 2023-06-28 12:58:03 UH88 / SNIFS 2400 Hinkle SCAT tns_2023lli_2023-06-28_12-58-03_UH88_SNIFS_SCAT.dat Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
L-GOTO GOTO-N_GOTO-1 2023-06-15 02:52:34 - 2023-06-23 02:13:16 2460110.619835 - 2460118.592547 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
349359 2023-06-23 02:13:16 2460118.592547 18.84 0.06 ABMag L-GOTO GOTO-N_GOTO-1 360
349358 2023-06-15 02:52:34 2460110.619835 19.9 ABMag L-GOTO GOTO-N_GOTO-1 270 [Last non detection]
G-Gaia Gaia_Gaia-photometric 2023-05-05 17:48:29 - 2023-08-11 03:01:26 2460070.242 - 2460167.626 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
360865 2023-08-11 03:01:26 2460167.626 17.18 0.2 ABMag G-Gaia Gaia_Gaia-photometric 60 Robot
360864 2023-05-05 17:48:29 2460070.242 21.5 ABMag G-Gaia Gaia_Gaia-photometric 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
186744 2023-09-04 12:46:00 Gaia_Bot1 S.T. Hodgkin, E. Breedt, A. Delgado et al. GaiaAlerts GaiaAlerts 22:57:39.470 +40:32:40.02 2023-08-11 03:01:26.400 17.18 G-Gaia Other Gaia23cbw GaiaAlerts Confirmed TDE N
180789 2023-06-23 16:01:59 GOTO_bot B. Godson, B.Gompertz, R. Kotak et al. GOTO GOTO 22:57:39.477 +40:32:40.70 2023-06-23 02:13:16.320 18.84 L-GOTO Other GOTO23ml GOTO 2023TNSTR1466....1G N
Classification Reports
ID Time received (UT) Sender Classifier/s Group Classification Redshift Spectra Related files Assoc. Groups End prop. period Remarks ADS Bibcode
15129 2023-06-28 14:51:55 Jason Hinkle Jason Hinkle on behalf of SCAT SCAT TDE 0.036 1 SCAT Broad (~15,000 km/s) H emission at z = 0.036 and possible He emission. Deep Balmer absorption consistent with a quiescent Balmer strong host galaxy. ASAS-SN and ATLAS photometry show the source to be on the rise over the last 2 weeks. At the current magnitude of g ~ 18.6 mag and accounting for moderate foreground extinction the source has an absolute magnitude of ~ -17.8 mag. The transient and host properties suggest a TDE classification. 2023TNSCR1521....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
15204 2023-06-28 12:58:03 UH88 / SNIFS 2400 Hinkle SCAT tns_2023lli_2023-06-28_12-58-03_UH88_SNIFS_SCAT.dat Object

Comments

TNS
System

Object coordinates updated

Object coordinates updated according to AT-report 186744 of Group GaiaAlerts
Previous RA, DEC: 22:57:39.477, +40:32:40.70 (344.414486, +40.544638)
Updated RA, DEC: 22:57:39.470, +40:32:40.02 (344.414458, 40.54445)