RA/DEC (2000)
10:46:52.550 +11:50:11.06
161.718957906 +11.8364059923
Type
SN Ia
Redshift
0.0543
Discovery ReportClassification Report
Related AstroNotes: 2024-98
Reporting Group
ATLAS
Discovering Data Source
ATLAS
Discovery Date
2024-04-09 07:54:54.720
TNS AT
Y
Public
Y
Discovery Mag
19.426
Filter
orange-ATLAS
Reporter/s
J. Tonry, L. Denneau, H. Weiland, A. Lawrence, R. Siverd (IfA, University of Hawaii), N. Erasmus, W. Koorts (South African Astronomical Observatory), A. Jordan, V. Suc (UAI, Obstech), S. J. Smartt (Oxford/QUB), K. W. Smith, D. R. Young, M. Nicholl, M. Fulton, M. McCollum, T. Moore, J. Weston, X. Sheng, P. Ramsden, C. R. Angus (Queen's University Belfast), A. Aamer (QUB/Birmingham), L. Shingles (GSI/QUB), S. Srivastav, J. Gillanders, L. Rhodes, A. Andersson, H. Stevance (Oxford), A. Rest (STScI), T.-W. Chen (NCU), C. Stubbs (Harvard), J. Sommer (LMU/QUB)
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

 ▌SN_2024gda - 2024-04-10 03:59:37 ESO-NTT / EFOSC2-NTT (ePESSTO+)z=
▌Show H at z=vexp= km/s
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▌Show He II at z=vexp= km/s
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▌Show C IV at z=vexp= km/s
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▌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_
 ▌ATLAS-HKO_ATLAS-02_orange_
 ▌Other_Other_L_
   
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
16960 2024-04-10 03:59:37 ESO-NTT / EFOSC2-NTT 900 Joyce van Dalen, Agnes van Hoof, Anastasia Shlentsova Morgan Fraser ePESSTO+ tns_2024gda_2024-04-10_03-59-37_ESO-NTT_EFOSC2-NTT_ePESSTO+.asci tns_2024gda_2024-04-10_03-59-37_ESO-NTT_EFOSC2-NTT_ePESSTO+.fits Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
w-P1 PS2_GPC2 2024-04-09 06:08:28 - 2024-04-09 06:08:28 2460409.75588 - 2460409.75588 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
401504 2024-04-09 06:08:28 2460409.75588 19.49 0.04 22 ABMag w-P1 PS2_GPC2 45 Robot
orange-ATLAS ATLAS-HKO_ATLAS-02 2024-04-06 13:08:21 - 2024-04-09 07:54:55 2460407.04747 - 2460409.8298 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
399963 2024-04-09 07:54:55 2460409.8298 19.426 0.114 20.12 ABMag orange-ATLAS ATLAS-HKO_ATLAS-02 110 Robot
399962 2024-04-06 13:08:21 2460407.04747 19.5 ABMag orange-ATLAS ATLAS-HKO_ATLAS-02 110 Robot [Last non detection]
L- Other_Other 2024-04-02 12:24:39 - 2024-04-04 10:50:06 2460403.0171181 - 2460404.9514583 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
401156 2024-04-04 10:50:06 2460404.9514583 1 Other L- Other_Other 3420 Paul Montague Magnitude cannot be estimated with any confidence. Set to arbitrary value above. An amateur astronomer based in South Australia, I imaged M96 in various dates in March and April 2024. My stack of images for the luminance filter for the whole period includes frames (3 minute subs) taken on dates 240312 240314 240402 240404 240405 240406 240407 and shows this supernova present. Please see the attached file "M96 300x180 lum 240312 240314 240402 240404 240405 240406 240407.jpg". [I have stacked without pixel rejection to try to give as "pure" data as possible, though note that the files have been calibrated with darks and flats.] I have tried to pin down when it appeared more precisely. It is not visible in 3 minute exposures, and so I have compared stacks of 19 of them to make it visible. The file "240402 1224-1326UTC stack cal align norejection 19x180 luminance.jpg" shows the stack for the indicated UTC range on April 2. It is not visible in that. Hence it is certainly not there at 1224 UTC on April 2. It is visible (just) in the file "240404 0951-1050UTC stack cal align norejection 19x180 luminance.jpg". Hence it is there by 1050 UTC on April 4. There was no more luminance data available on April 4. But 76 frames on April 5 confirm it was definitely there then (just in case there is doubt with the April 4 observation). Both 76 and 19 frame stacks are in the corresponding files. I have 24 300 second green filter shots from April 3 at a similar time of day but a stack of those is inconclusive. The original data files are available on request.
401155 2024-04-02 12:24:39 2460403.0171181 1 Other L- Other_Other 3420 Paul Montague [Last non detection] Magnitude cannot be estimated with any confidence. Set to arbitrary value above.
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
207926 2024-04-18 09:48:59 PS1_Bot1 K. C. Chambers,T. de Boer,J. Herman et al. Pan-STARRS Pan-STARRS 10:46:52.550 +11:50:11.06 2024-04-09 06:08:28.032 19.49 w-P1 PSN PS24bsa Pan-STARRS N
207761 2024-04-15 11:23:09 Paul Montague Paul Montague et al. 10:46:52.600 +11:50:11.00 2024-04-04 10:50:06.000 1 L- 5 PSN Amateur observation. Magnitude is impossible to estimate with any confidence. N
Related files
File Comments Last Modified (UT) Modified By
tns_2024gda_atrep_207761.jpg Non-detection on April 2 2024-04-15 11:23:09 Paul Montague
tns_2024gda_atrep_207761_0.jpg Detection on April 4 2024-04-15 11:23:09 Paul Montague
tns_2024gda_atrep_207761_1.jpg Second detection on April 5 2024-04-15 11:23:09 Paul Montague
tns_2024gda_atrep_207761_2.jpg Deeper stack on April 5 2024-04-15 11:23:09 Paul Montague
tns_2024gda_atrep_207761_3.jpg Image covering dates 240312 240314 240402 240404 240405 240406 240407. 2024-04-15 11:23:09 Paul Montague
207260 2024-04-09 15:00:33 ATLAS_Bot1 J. Tonry,L. Denneau,H. Weiland et al. ATLAS ATLAS 10:46:52.555 +11:50:10.97 2024-04-09 07:54:54.720 19.426 orange-ATLAS PSN ATLAS24fob ATLAS 2024TNSTR.989....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
16873 2024-04-10 14:19:38 ePESSTOplus_Bot1 Joyce van Dalen, Agnes van Hoof, Anastasia Shlentsova, Morgan Fraser, Ofer Yaron on behalf of ePESSTO+ ePESSTO+ SN Ia 0.0543 1 Add ePESSTO+ 2024TNSCR1012....1D
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
16960 2024-04-10 03:59:37 ESO-NTT / EFOSC2-NTT 900 Joyce van Dalen, Agnes van Hoof, Anastasia Shlentsova Morgan Fraser ePESSTO+ tns_2024gda_2024-04-10_03-59-37_ESO-NTT_EFOSC2-NTT_ePESSTO+.asci tns_2024gda_2024-04-10_03-59-37_ESO-NTT_EFOSC2-NTT_ePESSTO+.fits Object

Comments

TNS
System

Sun, 12/22/2024 - 17:58

Object coordinates updated

Object coordinates updated according to AT-report 207926 of Group Pan-STARRS
Previous RA, DEC: 10:46:52.555, +11:50:10.97 (161.7189775, +11.83638)
Updated RA, DEC: 10:46:52.550, +11:50:11.06 (161.718957906, 11.8364059923)

Paul
Montague

Sun, 12/22/2024 - 17:58

Amateur observation 2024-04-04 (6)

I realise my claimed observation on April 4 (and second observation on April 5) is in contradiction to the initial report's stated last non-detection of April 6. I do not understand this discrepancy.

Paul
Montague

Sun, 12/22/2024 - 17:58

Amateur observation 2024-04-04 (1)

An amateur astronomer based in South Australia, I imaged M96 in various dates in March and April 2024. 

My stack of images for the luminance filter for the whole period includes frames (3 minute subs) taken on dates 240312 240314 240402 240404 240405 240406 240407 and shows this supernova present. Please see the attached file "M96 300x180 lum 240312 240314 240402 240404 240405 240406 240407.jpg". [I have stacked without pixel rejection to try to give as "pure" data as possible, though note that the files have been calibrated with darks and flats.]

I have tried to pin down when it appeared more precisely. It is not visible in 3 minute exposures, and so I have compared stacks of 19 of them to make it visible.

The file "240402 1224-1326UTC stack cal align norejection 19x180 luminance.jpg" shows the stack for the indicated UTC range on April 2. It is not visible in that. Hence it is certainly not there at 1224 UTC on April 2.

It is visible (just) in the file "240404 0951-1050UTC stack cal align norejection 19x180 luminance.jpg". Hence it is there by 1050 UTC on April 4.

There was no more luminance data available on April 4. But 76 frames on April 5 confirm it was definitely there then (just in case there is doubt with the April 4 observation). Both 76 and 19 frame stacks are in the corresponding files.

I have 24 300 second green filter shots from April 3 at a similar time of day but a stack of those is inconclusive. 

The original data files are available to anyone interested. Also, details of equipment and exposures (and the processed picture!) are on Astrobin here:

Messier 96 with SN 2024gda (DiscoDuck) - AstroBin

240404 0951-1050UTC stack cal align norejection 19x180 luminance.jpg