RA/DEC (2000)
00:54:57.680 -37:38:40.01
13.7403345455 -37.6444463636
Type
Nova
Redshift
0.00048
Discovery ReportClassification Report
Reporting Group
DLT40
Discovering Data Source
DLT40
Discovery Date
2019-09-26 05:29:49.000
TNS AT
Y
Public
Y
Host Name
NGC0300
Discovery Mag
17.072
Filter
Clear-
Reporter/s
S. Valenti, D.J.Sand, S. Wyatt, M. Lundquist, R. Amaro, J. Andrews
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

 ▌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)

Light curves

 ▌ATLAS-MLO_ATLAS-01_orange
 ▌ATLAS-HKO_ATLAS-02_cyan
 ▌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
8831 2019-09-26 06:53:48 Gemini-S / GMOS-S Gemini Queue Observer DLT40 tns_2019qyl_2019-09-26_06-53-48_Gemini-S_GMOS-S_DLT40.txt Object
5179 2019-09-26 06:53:48 Gemini-S / GMOS-S 675 Too Andrews DLT40 tns_2019qyl_2458752.787366465_Gemini-S_GMOS-S_DLT40.asci Object Quick look classification from Gemini GMOS spectrum
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
orange-ATLAS ATLAS-MLO_ATLAS-01 2019-09-25 11:00:57 - 2019-09-25 11:00:57 2458751.9589931 - 2458751.9589931 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
92128 2019-09-25 11:00:57 2458751.9589931 19.4 ABMag orange-ATLAS ATLAS-MLO_ATLAS-01 30 Robot [Last non detection]
cyan-ATLAS ATLAS-HKO_ATLAS-02 2019-09-27 11:52:48 - 2019-09-27 11:52:48 2458753.995 - 2458753.995 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
92129 2019-09-27 11:52:48 2458753.995 17.601 0.037 19.55 ABMag cyan-ATLAS ATLAS-HKO_ATLAS-02 30 Robot
Clear- Other_Other 2016-12-02 04:17:02 - 2016-12-03 04:09:48 2457724.6785 - 2457725.67348 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
91715 2016-12-03 04:09:48 2457725.67348 17.072 0.09 ABMag Clear- Other_Other 60 Robot Prompt5 0.4m
91714 2016-12-02 04:17:02 2457724.6785 19.4933 ABMag Clear- Other_Other 60 Robot [Last non detection] Prompt5 0.4m
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
48061 2019-09-27 19:28:21 ATLAS_Bot1 J. Tonry,L. Denneau,A. Heinze et al. ATLAS ATLAS 00:54:57.680 -37:38:40.01 2019-09-27 11:52:48.000 17.601 cyan-ATLAS PSN ATLAS19whk ATLAS N
47746 2019-09-26 05:29:52 DLT40_bot1 S. Valenti,D.J.Sand,S. Wyatt et al. DLT40 DLT40 00:54:57.570 -37:38:39.99 2019-09-26 05:29:49.000 17.072 Clear- PSN NGC0300 DLT19m DLT40 2019TNSTR1915....1V N
Classification Reports
ID Time received (UT) Sender Classifier/s Group Classification Redshift Spectra Related files Assoc. Groups End prop. period Remarks ADS Bibcode
8821 2021-02-09 12:28:34 David Sand David Sand DLT40 Nova 0.00048 1 Add DLT40 A thorough analysis of spectra from 19qyl reveal this to be a nova in NGC300. 2021TNSCR.404....1S
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
8831 2019-09-26 06:53:48 Gemini-S / GMOS-S Gemini Queue Observer DLT40 tns_2019qyl_2019-09-26_06-53-48_Gemini-S_GMOS-S_DLT40.txt Object
5171 2019-09-26 16:46:14 Stefano Valenti Jennifer 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) DLT40 SN IIn 0.00048 1 Add DLT40 Using GELATO (Harutyunyan et al., 2008, A&A, 488, 383; gelato.tng.iac.es), 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/s 2019TNSCR1920....1A
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
5179 2019-09-26 06:53:48 Gemini-S / GMOS-S 675 Too Andrews DLT40 tns_2019qyl_2458752.787366465_Gemini-S_GMOS-S_DLT40.asci Object Quick look classification from Gemini GMOS spectrum

Comments

David
Sand

Sat, 02/06/2021 - 17:22

Classification Update

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

TNS
System

Fri, 09/27/2019 - 18:30

Object coordinates updated

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)

Samuel
Wyatt

Thu, 09/26/2019 - 05:54

A note on the Light Curves date range and Discovery Magnitude

The actual last non detection is 2019-9-25.2

Samuel
Wyatt

Thu, 09/26/2019 - 05:49

A note on the Light Curves date range and Discovery Magnitude

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