AT 2019qyl
RA/DEC (2000)
00:54:57.680 -37:38:40.01
13.7403345455 -37.6444463636
Reporting Group
Discovering Data Source
Discovery Date
2019-09-26 05:29:49.000
Host Name
Discovery Mag
S. Valenti, D.J.Sand, S. Wyatt, M. Lundquist, R. Amaro, J. Andrews


 AT_2019qyl - 2019-09-26 06:53:48 Gemini-S / GMOS-S (DLT40)z=
 AT_2019qyl - 2019-09-26 06:53:48 Gemini-S / GMOS-S (DLT40)z=
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   Binning factor: (rounded to nearest integer >1)
Mouse hovers at WL: 0 (rest),0 (observed)
SelectIDObs-date (UT)Tel / InstExp-TimeObserver/sReducer/sGroupSpectrum ascii fileSpectrum fits fileSpec. TypeAssoc. GroupsEnd prop. periodRemarks
88312019-09-26 06:53:48Gemini-S / GMOS-SGemini Queue ObserverDLT40 tns_2019qyl_2019-09-26_06-53-48_Gemini-S_GMOS-S_DLT40.txtObjectDLT40
51792019-09-26 06:53:48Gemini-S / GMOS-S675TooAndrewsDLT40 tns_2019qyl_2458752.787366465_Gemini-S_GMOS-S_DLT40.asciObjectDLT40Quick look classification from Gemini GMOS spectrum
Light Curves
FilterTel / InstObs-date rangePhotometry
Clear-Other_Other2016-12-02 04:17:02 - 2016-12-03 04:09:482
IDObs-dateMag. / FluxErrLim. Mag./FluxUnitsFilterTel / InstExp-timeObserver/sRemarks
917152016-12-03 04:09:4817.0720.09ABMagClear-Other_Other60RobotPrompt5 0.4m
917142016-12-02 04:17:0219.4933ABMagClear-Other_Other60Robot[Last non detection] Prompt5 0.4m
cyan-ATLASATLAS1_ACAM12019-09-27 11:52:48 - 2019-09-27 11:52:481
IDObs-dateMag. / FluxErrLim. Mag./FluxUnitsFilterTel / InstExp-timeObserver/sRemarks
921292019-09-27 11:52:4817.6010.03719.55ABMagcyan-ATLASATLAS1_ACAM130Robot
orange-ATLASATLAS1_ACAM12019-09-25 11:00:57 - 2019-09-25 11:00:571
IDObs-dateMag. / FluxErrLim. Mag./FluxUnitsFilterTel / InstExp-timeObserver/sRemarks
921282019-09-25 11:00:5719.4ABMagorange-ATLASATLAS1_ACAM130Robot[Last non detection]
AT Reports
IDTime received (UT)SenderReporter/sReportting groupDisc. Data SourceRADECDiscovery date (UT)Discovery Mag.FilterRelated filesAT TypeInternal nameAssoc. GroupsEnd prop. periodRemarks
480612019-09-27 19:28:21ATLAS_Bot1J. 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)ATLASATLAS00:54:57.680-37:38:40.012019-09-27 11:52:48.00017.601cyan-ATLASPSNATLAS19whkATLAS
477462019-09-26 05:29:52DLT40_bot1S. Valenti, D.J.Sand, S. Wyatt, M. Lundquist, R. Amaro, J. AndrewsDLT40DLT4000:54:57.570-37:38:39.992019-09-26 05:29:49.00017.072Clear-PSNDLT19mDLT40
Classification Reports
IDTime received (UT)SenderClassifier/sGroupClassificationRedshiftRelated filesAssoc. GroupsEnd prop. periodRemarksADS Bibcode
88212021-02-09 12:28:34dsandDavid SandDLT40Nova0.00048DLT40A thorough analysis of spectra from 19qyl reveal this to be a nova in NGC300.2021TNSCR.404....1S
51712019-09-26 16:46:14valentiJennifer Andrews (U. Arizona), Stefano Valenti (UC Davis), Michael Lundquist (U. Arizona), Dave Sand (U. Arizona), Azalee Bostroem (UC Davis), Rachael Amaro (U. Arizona), Sam Wyatt (U. Arizona)DLT40SN IIn0.00048DLT40Using GELATO (Harutyunyan et al., 2008, A&A, 488, 383;, we find the best fit to SN IIn/LBV. The SNIIn/LBV is likely in the host-galaxy NGC 300 (z = 0.00048; NED value). Taken at Gemini-S using GMOS. At the distance of NGC300 (distance modulus of 25.83; NED value) the object’s magnitude Mr=-8.5 is more consistent with an LBV (or very young SN IIn). An H-alpha P-cygni absorption was measured at 2000 km/s2019TNSCR1920....1A


Subsequent analysis of the initial classification and further follow-up data indicates that this event was a nova in NGC300.

Object coordinates updated according to AT-report 48061 of Group ATLAS
Previous RA, DEC: 00:54:57.570, -37:38:39.99 (13.739875, -37.644442)
Updated RA, DEC: 00:54:57.680, -37:38:40.01 (13.7403345455, -37.6444463636)

The actual last non detection is 2019-9-25.2

Our software recognized a cosmic ray from december of 2016 as the earliest detection for this transient. The actual last non detection is ~2019-9-26.2. Our actual discovery mag is at 17.38