RA/DEC (2000)
12:02:42.711 +01:59:03.40
180.677964454 +1.98427720961
Type
LBV
Redshift
0.00659
Discovery ReportClassification Report
Related AstroNotes: 2019-146
Reporting Group
ATLAS
Discovering Data Source
ATLAS
Discovery Date
2019-12-03 14:25:26.000
TNS AT
Y
Public
Y
Discovery Mag
18.775
Filter
orange-ATLAS
Reporter/s
J. Tonry, L. Denneau, A. Heinze, H. Weiland, H. Flewelling (IfA, University of Hawaii), B. Stalder (LSST), A. Rest (STScI), C. Stubbs (Harvard University), K. W. Smith, S. J. Smartt, D. R. Young, S. Srivastav, O. McBrien, D. O'Neill, P. Clark, M. Fulton, J. Gillanders, M. Dobson (Queen's University Belfast), T.-W. Chen (MPE), D. E. Wright (University of Minnesota), J. Anderson (ESO)
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

 ▌AT_2019wbg - 2019-12-23 06:07:34 LT / SPRAT (ZTF)z=
 ▌AT_2019wbg - 2019-12-23 06:07:34 LT / SPRAT (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

 ▌PS2_GPC2_w
 ▌P48_ZTF-Cam_r
 ▌P48_ZTF-Cam_g
 ▌ATLAS-MLO_ATLAS-01_orange
 ▌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
6975 2019-12-23 06:07:34 LT / SPRAT 3000 LTbot Perley ZTF tns_2019wbg_2019-12-23_06-07-34_LT_SPRAT_ZTF_0.spec Object
5745 2019-12-23 06:07:34 LT / SPRAT 3000 LTbot Perley ZTF tns_2019wbg_2019-12-23_06-07-34_LT_SPRAT_ZTF.spec Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
w-P1 PS2_GPC2 2020-01-19 14:22:33 - 2020-01-19 14:22:33 2458868.0989931 - 2458868.0989931 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
119156 2020-01-19 14:22:33 2458868.0989931 18.68 0.02 22 ABMag w-P1 PS2_GPC2 45 Robot
r-ZTF P48_ZTF-Cam 2019-11-13 12:59:02 - 2022-02-15 06:59:43 2458801.0409954 - 2459625.7914699 5
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
268772 2022-02-15 06:59:43 2459625.7914699 18.86 0.14 19.16 ABMag r-ZTF P48_ZTF-Cam 30
270986 2022-02-15 06:59:43 2459625.7914699 18.86 0.14 19.16 ABMag r-ZTF P48_ZTF-Cam 30
106850 2019-12-14 10:39:21 2458831.9439931 18.36 ABMag r-ZTF P48_ZTF-Cam 30 ZTF
107700 2019-12-14 10:38:52 2458831.9436574 18.36 0.16 18.85 ABMag r-ZTF P48_ZTF-Cam 30
106849 2019-11-13 12:59:02 2458801.0409954 19.39 ABMag r-ZTF P48_ZTF-Cam 30 ZTF
g-ZTF P48_ZTF-Cam 2019-12-21 11:58:37 - 2022-02-20 10:02:43 2458838.9990509 - 2459630.9185532 3
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
268773 2022-02-20 10:02:43 2459630.9185532 19.73 0.25 19.52 ABMag g-ZTF P48_ZTF-Cam 30
270987 2022-02-20 10:02:43 2459630.9185532 19.73 0.25 19.52 ABMag g-ZTF P48_ZTF-Cam 30
107701 2019-12-21 11:58:37 2458838.9990509 19.18 0.24 19.17 ABMag g-ZTF P48_ZTF-Cam 30
orange-ATLAS ATLAS-MLO_ATLAS-01 2019-11-29 15:51:50 - 2019-12-03 14:25:26 2458817.1609954 - 2458821.1009954 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
105013 2019-12-03 14:25:26 2458821.1009954 18.775 0.136 19.38 ABMag orange-ATLAS ATLAS-MLO_ATLAS-01 30 Robot
105012 2019-11-29 15:51:50 2458817.1609954 17.78 ABMag orange-ATLAS ATLAS-MLO_ATLAS-01 30 Robot [Last non detection]
Clear- Other_Other 2024-04-09 13:55:12 - 2024-04-09 13:55:12 2460410.08 - 2460410.08 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
400783 2024-04-09 13:55:12 2460410.08 17.7 18.5 ABMag Clear- Other_Other 128
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
207561 2024-04-12 15:04:40 Yuji Tanaka Yuji Tanaka 12:02:42.660 +01:59:02.50 2024-04-09 13:55:12.000 17.7 Clear- 1 PSN NGC4045 2024-04-15 N
Related files
File Comments Last Modified (UT) Modified By
tns_2019wbg_atrep_207561.png 2024-04-12 15:04:41 Yuji Tanaka
139131 2022-03-04 03:39:30 ZTF_AMPEL_COMPLETE J. Nordin, V. Brinnel, J. van Santen (HU Berlin) et al. AMPEL ZTF 12:02:42.714 +01:59:03.39 2022-02-15 06:59:43.008 18.86 r-ZTF PSN ZTF19acpmbvd AMPEL N
138213 2022-02-28 15:28:12 ZTF_AMPEL_COMPLETE J. Nordin, V. Brinnel, J. van Santen (HU Berlin) et al. AMPEL ZTF 12:02:42.717 +01:59:03.44 2022-02-15 06:59:43.008 18.86 r-ZTF PSN ZTF19acpmbvd AMPEL N
61307 2020-02-08 00:40:47 PS2_Bot1 K. C. Chambers, T. de Boer, J. Bulger et al. Pan-STARRS Pan-STARRS 12:02:42.711 +01:59:03.40 2020-01-19 14:22:33.000 18.68 w-P1 PSN PS20tf Pan-STARRS N
55242 2019-12-21 12:56:16 ZTF_AMPEL_COMPLETE J. Nordin, V. Brinnel, M. Giomi et al. ZTF ZTF 12:02:42.718 +01:59:03.30 2019-12-14 10:38:52.000 18.36 r-ZTF PSN ZTF19acpmbvd ZTF See arXiv:1904.05922 for selection criteria. N
54874 2019-12-18 11:43:45 ZTF_Bot1 C. Fremling (Caltech) on behalf of the Zwicky Transient Facility (ZTF) collaboration ZTF ZTF 12:02:42.694 +01:59:03.81 2019-11-13 12:59:02.000 19.39 r-ZTF PSN ZTF19acpmbvd ZTF N
53949 2019-12-03 22:30:43 ATLAS_Bot1 J. Tonry, L. Denneau, A. Heinze et al. ATLAS ATLAS 12:02:42.723 +01:59:03.64 2019-12-03 14:25:26.000 18.775 orange-ATLAS PSN ATLAS19bcjh ATLAS 2019TNSTR2509....1T N
Classification Reports
ID Time received (UT) Sender Classifier/s Group Classification Redshift Spectra Related files Assoc. Groups End prop. period Remarks ADS Bibcode
6963 2020-06-25 16:21:07 Daniel Perley Daniel Perley (LJMU) ZTF LBV 0.00659 1 ZTF The continued up-and-down variability of this object over the last 200 days (as seen in ZTF alert photometry on public brokers), coupled with the relatively low luminosity (M_r ~ -14.3 at peak), suggests that this is more likely to be the sustained eruption of a luminous blue variable (LBV) and not a genuine supernova. 2020TNSCR1936....1P
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
6975 2019-12-23 06:07:34 LT / SPRAT 3000 LTbot Perley ZTF tns_2019wbg_2019-12-23_06-07-34_LT_SPRAT_ZTF_0.spec Object
5737 2019-12-23 14:57:24 Daniel Perley D. Perley and K. Taggart (LJMU) on behalf of ZTF ZTF SN IIn 0.00659 1 ZTF A 4x750s spectrum with SPRAT on the Liverpool Telescope shows a weak continuum with strong, intermediate-width emission lines of hydrogen (alpha, beta, gamma) and helium. The spectra show good consistency with previous type IIn supernovae (e.g. SN 1988Z), although the inferred luminosity is much lower than typical IIn SNe. The host galaxy is NGC 4045 (z=0.00659). 2019TNSCR2684....1T
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
5745 2019-12-23 06:07:34 LT / SPRAT 3000 LTbot Perley ZTF tns_2019wbg_2019-12-23_06-07-34_LT_SPRAT_ZTF.spec Object
5648 2019-12-06 15:02:24 Lina Tomasella P. Ochner, A. Pastorello, S. Benetti, E. Cappellaro, N. Elias-Rosa, L. Tomasella, M. Turatto (INAF OAPd) Padova-Asiago Impostor-SN 0.007 Padova-Asiago 2020-12-06 The classification was performed using the GELATO (Harutyunyan et al. 2008, A&A, 488, 383) <br> and SNID (Blondin and Tonry 2007, ApJ, 666, 1024) tools. 2020TNSCR3699....1O

Comments

Andrew
Drake

Sun, 12/22/2024 - 17:58

Additional detections of AT 2019wbg.

This source is visible in CRTS SNHunt data taken on the following nights:

2017-12-20, 2018-12-14, 2019-02-18, 2020-02-16, 2020-02-27, 2020-03-16, 2020-04-02, 2020-04-15, 2020-04-25, 2020-05-23, 2022-03-05, 2022-03-23, 2022-04-04 and 2024-03-05.

The variable nature of the source strongly suggests that is an LBV (SN-imposter) as originally noted by Ochner et al. (2019).

TNS
System

Sat, 02/08/2020 - 00:30

Object coordinates updated

Object coordinates updated according to AT-report 61307 of Group Pan-STARRS1
Previous RA, DEC: 12:02:42.718, +01:59:03.30 (180.6779924, +1.9842507666667)
Updated RA, DEC: 12:02:42.711, +01:59:03.40 (180.677964454, 1.98427720961)

TNS
System

Sat, 12/21/2019 - 12:30

Object coordinates updated

Object coordinates updated according to AT-report 55242 of Group ZTF
Previous RA, DEC: 12:02:42.694, +01:59:03.81 (180.6778924, +1.9843906)
Updated RA, DEC: 12:02:42.718, +01:59:03.30 (180.6779924, 1.9842507666667)

TNS
System

Wed, 12/18/2019 - 11:30

Object coordinates updated

Object coordinates updated according to AT-report 54874 of Group ZTF
Previous RA, DEC: 12:02:42.723, +01:59:03.64 (180.678013333, +1.98434444444)
Updated RA, DEC: 12:02:42.694, +01:59:03.81 (180.6778924, 1.9843906)