TNS Classification Report No. 21235 [ 2025TNSCR2130....1K ]
Date Received (UTC): 2025-06-06 05:21:58 Sender: Ravjit Kaur
Group: UCSC
Ravjit Kaur (UCSC), Kishore Patra (UCSC), Kyle Davis (UCSC), Ryan Foley (UCSC) report/s a classification of object: SN 2025msx
Type: SN Ic-BLRedshift: 0.014
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. The observed spectrum is particularly red, and assuming a typical blue spectrum for a young SN, the color can be attributed to dust reddening of E(B-V) ~ 1.2 mag. The spectrum has broad spectral features consistent with that of a SN Ic-BL soon after peak brightness. The ATLAS light curve is either still rising or at peak, and so we caution that the phase reported is likely biased by ~7 days. Correcting for the derived reddening and a Hubble-flow distance accounting for Virgo inflow and the Great Attractor, we find an absolute magnitude of M_o = -19.0 mag, consistent with a SN Ic-BL before peak brightness.
The following Classification spectrum was provided:
Obsdate: 2025-06-03 05:23:26
Instrument: KAST
Telescope: 3m Lick Shane Reflector
Details of the object and its spectra can be viewed here: https://www.wis-tns.org/object/2025msx
Date Received (UTC): 2025-06-06 05:21:58 Sender: Ravjit Kaur
Group: UCSC
Ravjit Kaur (UCSC), Kishore Patra (UCSC), Kyle Davis (UCSC), Ryan Foley (UCSC) report/s a classification of object: SN 2025msx
Type: SN Ic-BLRedshift: 0.014
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. The observed spectrum is particularly red, and assuming a typical blue spectrum for a young SN, the color can be attributed to dust reddening of E(B-V) ~ 1.2 mag. The spectrum has broad spectral features consistent with that of a SN Ic-BL soon after peak brightness. The ATLAS light curve is either still rising or at peak, and so we caution that the phase reported is likely biased by ~7 days. Correcting for the derived reddening and a Hubble-flow distance accounting for Virgo inflow and the Great Attractor, we find an absolute magnitude of M_o = -19.0 mag, consistent with a SN Ic-BL before peak brightness.
The following Classification spectrum was provided:
Obsdate: 2025-06-03 05:23:26
Instrument: KAST
Telescope: 3m Lick Shane Reflector
Details of the object and its spectra can be viewed here: https://www.wis-tns.org/object/2025msx