AT 2018htr
RA/DEC (2000)
00:14:07.96 -23:10:09.71
3.533167 -23.169364
Type
LBV
Redshift
0.001558
Source Group
DLT40
Discovery Date
2018-11-03 23:43:48
TNS AT
Y
Public
Y
Host Name
NGC0045
Discovery Mag
17.4692
Filter
Clear-
Discoverer/s
S. Valenti, D.J.Sand, S. Wyatt
 2018-11-04 00:50:05 SOAR / Goodman
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Spectra
IDObs-date (UT)Tel / InstExp-TimeObserver/sReducer/sGroupSpectrum ascii fileSpectrum fits fileSpec. TypeAssoc. GroupsEnd prop. periodRemarks
29722018-11-04 00:50:05SOAR / Goodman1800C. D. Kilpatrick, J. J. HermesC. D. Kilpatrick, M. R. Siebert, R. J. Foley tns_2018htr_2018-11-04_00-50-05_SOAR_Goodman.datObject
Light Curves
FilterTel / InstObs-date rangePhotometry
Clear-Other_Other2018-11-01 00:55:38 - 2018-11-02 00:04:222
Photometry
IDObs-dateMag. / FluxErrLim. Mag./FluxUnitsFilterTel / InstExp-timeObserver/sRemarks
383642018-11-02 00:04:2217.46921.14ABMagClear-Other_Other60RobotPrompt5 0.4m
383632018-11-01 00:55:3819.8375ABMagClear-Other_Other60Robot[Last non detection] Prompt5 0.4m
AT Reportings
IDTime received (UT)SenderReporter/s (Discoverer/s)GroupRADECDiscovery date (UT)Discovery Mag.FilterRelated filesAT TypeInternal nameAssoc. GroupsEnd prop. periodRemarks
239222018-11-03 23:46:19DLT40_bot1S. Valenti, D.J.Sand, S. WyattDLT4000:14:07.96-23:10:09.712018-11-03 23:43:4817.4692Clear-PSNDLT18anDLT40
Classification Reportings
IDTime received (UT)SenderClassifier/sGroupClassificationRedshiftRelated filesAssoc. GroupsEnd prop. periodRemarks
29642018-11-04 23:19:54UCSCTr_Bot1M. R. Siebert, C. D. Kilpatrick, C. Rojas-Bravo, R. J. Foley (UCSC), J. J. Hermes (UNC), A. Campillay (LCO)LBV0.001558The spectrum is blue with Balmer and He I P-Cygni features and several strong absorption features including Ca H&K and several Fe II lines. The spectrum is generically similar to 'cool' LBV outbursts such as UGC 2773 OT-1 (Smith et al., 2010, AJ, 193, 1451; Foley et al., 2011, ApJ, 732, 32). The spectrum is also similar to the Type IIn SN 1994W (Sollerman et al., 1998, ApJ, 493, 933). Correcting for the small redshift of NGC 0045 (cz = 467 km/s; Monnier Ragaigne et al., 2003, A&A, 408, 465), we find that the minimum of the H-alpha absorption for AT 2018htr is blueshifted by -1240 km/s. The absorption feature extends to approximately -2100 km/s. ATel: 12166