TNS Classification Report No. 21234 [ 2025TNSCR2130....1K ]
Date Received (UTC): 2025-06-06 05:17:52 Sender: Ravjit Kaur
Group: UCSC
Ravjit Kaur (UCSC), Kishore Patra (UCSC), Kyle Davis (UCSC), Ryan Foley (UCSC) report/s a classification of object: SN 2025jar
Type: SN Ia-91bg-likeRedshift: 0.071
Remarks: When the redshift is given to 2 decimal places, it is derived from the SN spectrum. Otherwise, the redshift is determined from the host galaxy. We measure a redshift of 0.0713 from a spectrum of the host galaxy, which differs from the NED-listed redshift that was inferred from a friends-of-friends procedure. The spectrum matches well with SN 1991bg-like SNe Ia at a phase of about 18 days after peak at a redshift of 0.07, consistent with our spectroscopic redshift measurement. We measure a Si II 6355 velocity of -8,100 km/s.
The following Classification spectrum was provided:
Obsdate: 2025-06-03 08:05:50
Instrument: KAST
Telescope: 3m Lick Shane Reflector
Details of the object and its spectra can be viewed here: https://www.wis-tns.org/object/2025jar
Date Received (UTC): 2025-06-06 05:17:52 Sender: Ravjit Kaur
Group: UCSC
Ravjit Kaur (UCSC), Kishore Patra (UCSC), Kyle Davis (UCSC), Ryan Foley (UCSC) report/s a classification of object: SN 2025jar
Type: SN Ia-91bg-likeRedshift: 0.071
Remarks: When the redshift is given to 2 decimal places, it is derived from the SN spectrum. Otherwise, the redshift is determined from the host galaxy. We measure a redshift of 0.0713 from a spectrum of the host galaxy, which differs from the NED-listed redshift that was inferred from a friends-of-friends procedure. The spectrum matches well with SN 1991bg-like SNe Ia at a phase of about 18 days after peak at a redshift of 0.07, consistent with our spectroscopic redshift measurement. We measure a Si II 6355 velocity of -8,100 km/s.
The following Classification spectrum was provided:
Obsdate: 2025-06-03 08:05:50
Instrument: KAST
Telescope: 3m Lick Shane Reflector
Details of the object and its spectra can be viewed here: https://www.wis-tns.org/object/2025jar