RA/DEC (2000)
08:13:13.380 +45:59:29.54
123.30575 +45.991539
Type
LBV
Redshift
0.001
Discovery ReportClassification Report
Reporting Group
LOSS
Discovering Data Source
LOSS
Discovery Date
2017-01-06 12:11:24.000
TNS AT
Y
Public
Y
Host Name
NGC 2537
Host Redshift
0.001491
Discovery Mag
18.5
Filter
Clear-
Reporter/s
Haynes F. Stephens, WeiKang Zheng, Alexei V. Filippenko (UC Berkeley)
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

 ▌AT_2017be - 2017-01-10 08:33:31 FTN / FLOYDS-N (LCOGT SN-KP)z=
▌Show H at z=vexp= km/s
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▌Show N V at z=vexp= km/s
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▌Show Mg at z=vexp= km/s
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▌Show [Ca II] at z=vexp= km/s
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   Binning factor: (rounded to nearest integer >1)
Mouse hovers at WL: 0 (rest),0 (observed)

Light curves

 ▌P48_CFH12k_R
 ▌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
715 2017-01-10 08:33:31 FTN / FLOYDS-N 3600 Las Cumbres Observatory Griffin Hosseinzadeh LCOGT SN-KP tns_2017be_2017-01-10_08-33-31_FTN_FLOYDS-N_LCOGT_SN-KP.ascii tns_2017be_2017-01-10_08-33-31_FTN_FLOYDS-N_LCOGT_SN-KP.fits Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
R-PTF P48_CFH12k 2009-01-01 00:00:00 - 2017-01-07 10:16:19 2454832.5 - 2457760.9279977 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
11467 2017-01-07 10:16:19 2457760.9279977 18.349 ABMag R-PTF P48_CFH12k 60 iPTF
11466 2009-01-01 00:00:00 2454832.5 21.5 ABMag R-PTF P48_CFH12k 60 iPTF [Last non detection]
Clear- Other_Other 2016-12-29 11:29:58 - 2017-01-06 12:11:24 2457751.9791435 - 2457760.0079167 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
11281 2017-01-06 12:11:24 2457760.0079167 18.5 18.8 VegaMag Clear- Other_Other 18 KAIT
11280 2016-12-29 11:29:58 2457751.9791435 18.5 VegaMag Clear- Other_Other 18 KAIT [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 Bibcode Unreal Auto classification
7802 2017-01-07 10:49:55 iPTF_Bot1 M. Kasliwal,Y. Cao (Caltech),on behalf of iPTF et al. iPTF iPTF 08:13:13.375 +45:59:28.93 2017-01-07 10:16:19.000 18.349 R-PTF PSN iPTF17be iPTF 2017-07-19 N
7709 2017-01-07 03:05:39 Weikang Zheng Haynes F. Stephens,WeiKang Zheng,Alexei V. Filippenko (UC Berkeley) et al. LOSS LOSS 08:13:13.380 +45:59:29.54 2017-01-06 12:11:24.000 18.5 Clear- 1 PSN NGC 2537 kait-17A LOSS 2017TNSTR..33....1S N
Related files
File Comments Last Modified (UT) Modified By
tns_2017be_atrep_7709_LOSS.jpg 2017-01-07 03:05:39 Weikang Zheng
Classification Reports
ID Time received (UT) Sender Classifier/s Group Classification Redshift Spectra Related files Assoc. Groups End prop. period Remarks ADS Bibcode
705 2017-01-10 21:36:53 Griffin Hosseinzadeh Griffin Hosseinzadeh, Curtis McCully, Iair Arcavi, D. Andrew Howell, Stefano Valenti LCOGT SN-KP LBV 0.001 1 Add LCOGT SN-KP The spectrum shows a H-alpha emission at the redshift of the proposed host galaxy (z=0.001; Garrido, Marcelin, & Amram 2004, MNRAS, 349, 225; via NED) with a width corresponding to ~950 km/s (marginally resolved by the spectrograph) on top of the somewhat blue continuum of the host (SDSS DR13). Given that the discovery magnitude was 18.5 mag, corresponding to an absolute magnitude of ~-11 mag (Tully 1988, Nearby Galaxy Catalog; Sharina, Karachentsev, & Tikhonov 1999, AstL, 25, 322; via NED), we conclude that the transient is likely an extragalactic LBV outburst (i.e. a supernova impostor). 2017TNSCR..43....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
715 2017-01-10 08:33:31 FTN / FLOYDS-N 3600 Las Cumbres Observatory Griffin Hosseinzadeh LCOGT SN-KP tns_2017be_2017-01-10_08-33-31_FTN_FLOYDS-N_LCOGT_SN-KP.ascii tns_2017be_2017-01-10_08-33-31_FTN_FLOYDS-N_LCOGT_SN-KP.fits Object

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