TNS Classification Report No. 9420 [ 2021TNSCR1248....1T ]
Date Received (UTC): 2021-04-17 17:19:23 Sender: Geza Csornyei
Group: adH0cc
S. Taubenberger, G. Csoernyei, C. Vogl, M. G. Cudmani, A. Holas, W. Hillebrandt, S. H. Suyu (MPA Garching), B. Leibundgut, J. Spyromilio (ESO), A. Floers (GSI), S. J. Smartt, M. Dobson (QUB), R. Kotak (Turku), R. Bruch, A. Gal-Yam (Weizmann), C. Lemon (Lausanne), S. Blondin (CNRS, LAM) report/s a classification of object: SN 2021jpk
Type: SN IbnRedshift: 0.038
Remarks: The spectrum is characterized by a blue continuum with subtle narrow He P-Cygni features superimposed, indicative of a Type Ibn supernova. The spectrum is similar to that of SN 2010al two days after maximum, although SN 2021jpk has less prominent features and a bluer continuum (see attached figure). Combined with the still-rising ZTF light curve this suggests that the supernova is a few days before or at maximum. We adopted the redshift of the host as the supernova redshift.
The following Classification spectrum was provided:
Obsdate: 2021-04-17 04:23:12
Instrument: FORS2
Telescope: The Very Large Telescope - UT1
Remarks: Quick-reduction spectrum, telluric corrected.
Details of the object and its spectra can be viewed here: https://www.wis-tns.org/object/2021jpk
Date Received (UTC): 2021-04-17 17:19:23 Sender: Geza Csornyei
Group: adH0cc
S. Taubenberger, G. Csoernyei, C. Vogl, M. G. Cudmani, A. Holas, W. Hillebrandt, S. H. Suyu (MPA Garching), B. Leibundgut, J. Spyromilio (ESO), A. Floers (GSI), S. J. Smartt, M. Dobson (QUB), R. Kotak (Turku), R. Bruch, A. Gal-Yam (Weizmann), C. Lemon (Lausanne), S. Blondin (CNRS, LAM) report/s a classification of object: SN 2021jpk
Type: SN IbnRedshift: 0.038
Remarks: The spectrum is characterized by a blue continuum with subtle narrow He P-Cygni features superimposed, indicative of a Type Ibn supernova. The spectrum is similar to that of SN 2010al two days after maximum, although SN 2021jpk has less prominent features and a bluer continuum (see attached figure). Combined with the still-rising ZTF light curve this suggests that the supernova is a few days before or at maximum. We adopted the redshift of the host as the supernova redshift.
The following Classification spectrum was provided:
Obsdate: 2021-04-17 04:23:12
Instrument: FORS2
Telescope: The Very Large Telescope - UT1
Remarks: Quick-reduction spectrum, telluric corrected.
Details of the object and its spectra can be viewed here: https://www.wis-tns.org/object/2021jpk