TNS Classification Report No. 17519 [ 2024TNSCR2571....1B ]
Date Received (UTC): 2024-07-24 06:08:20 Sender: K. Azalee Bostroem
Group: DLT40
K. A. Bostroem, R. Kyer, J. Strader, M. Shrestha, M. Newsome, G. Terreran, C. McCully, D. J. Sand, S. Jha, J. E. Andrews, S. Valenti, M. Lundquist, E. Hoang, Y. Dong, D. Janzen, G. Hosseinzadeh, J. Pearson, N. Meza, D. Metha, A. Ravi, A. Martas, D. A. Howell, M. Andrews, J. Farah, E. Padilla Gonzalez report/s a classification of object: SN 2024pxg
Type: SN IIRedshift: 0.00499
Remarks: The DLT40 team and Global Supernova Project obtained two spectra of AT 2024pxg with the FLOYDS spectrograph on the 2m FTS telescope on 2024-07-23 12:00:38 and the Goodman spectrograph on the SOAR telescope on 2024-07-23 23:35:21.882. There is a broad, shallow P Cygni profile with the emission centered around 6600A and a broad emission line around 4700. Using Gelato, we find this is well matched to a young Type II supernova around 4 days after explosion with E(B-V)=0.3 at a redshift of 0.0049, consistent with the redshift of the nearby galaxy NGC 6221. We note however, that although we find a young Type II supernova to be the best fit spectroscopically and consistent with the likely host galaxy and non-detection, both SNID and Gelato found matches to multiple supernova types. The Na I absorption of the host galaxy and Milky Way have similar depths, implying a similar level of extinction in each galaxy. From the galactic extinction maps of Schlafly & Finkbeiner 2011, the Milky Way extinction is E(B-V)=0.15. We thus find the extinction found from the template fitting in Gelato to be realistic. We highlight that this supernova was vetted and a classification spectrum was obtained without any human intervention. The DLT40 survey automatically obtained a confirmation image of the candidate based on a high machine learning score and the FLOYDS spectrum was automatically triggered based on confirmation the image.
The following Classification spectrum was provided:
Obsdate: 2024-07-23 23:35:22
Instrument: Goodman
Telescope: Southern Astrophysical Research Telescope
Details of the object and its spectra can be viewed here: https://www.wis-tns.org/object/2024pxg
Date Received (UTC): 2024-07-24 06:08:20 Sender: K. Azalee Bostroem
Group: DLT40
K. A. Bostroem, R. Kyer, J. Strader, M. Shrestha, M. Newsome, G. Terreran, C. McCully, D. J. Sand, S. Jha, J. E. Andrews, S. Valenti, M. Lundquist, E. Hoang, Y. Dong, D. Janzen, G. Hosseinzadeh, J. Pearson, N. Meza, D. Metha, A. Ravi, A. Martas, D. A. Howell, M. Andrews, J. Farah, E. Padilla Gonzalez report/s a classification of object: SN 2024pxg
Type: SN IIRedshift: 0.00499
Remarks: The DLT40 team and Global Supernova Project obtained two spectra of AT 2024pxg with the FLOYDS spectrograph on the 2m FTS telescope on 2024-07-23 12:00:38 and the Goodman spectrograph on the SOAR telescope on 2024-07-23 23:35:21.882. There is a broad, shallow P Cygni profile with the emission centered around 6600A and a broad emission line around 4700. Using Gelato, we find this is well matched to a young Type II supernova around 4 days after explosion with E(B-V)=0.3 at a redshift of 0.0049, consistent with the redshift of the nearby galaxy NGC 6221. We note however, that although we find a young Type II supernova to be the best fit spectroscopically and consistent with the likely host galaxy and non-detection, both SNID and Gelato found matches to multiple supernova types. The Na I absorption of the host galaxy and Milky Way have similar depths, implying a similar level of extinction in each galaxy. From the galactic extinction maps of Schlafly & Finkbeiner 2011, the Milky Way extinction is E(B-V)=0.15. We thus find the extinction found from the template fitting in Gelato to be realistic. We highlight that this supernova was vetted and a classification spectrum was obtained without any human intervention. The DLT40 survey automatically obtained a confirmation image of the candidate based on a high machine learning score and the FLOYDS spectrum was automatically triggered based on confirmation the image.
The following Classification spectrum was provided:
Obsdate: 2024-07-23 23:35:22
Instrument: Goodman
Telescope: Southern Astrophysical Research Telescope
Details of the object and its spectra can be viewed here: https://www.wis-tns.org/object/2024pxg