TNS Classification Report No. 11123 [ 2021TNSCR3592....1D ]
Date Received (UTC): 2021-10-20 16:23:47 Sender: Kyle Davis
Group: UCSC
Kyle Davis report/s a classification of object: SN 2021aapa
Type: SN IInRedshift: 0.032
Remarks: We measure a H-alpha FWHM velocity of 1,300 km/s. Using a Tully-Fisher distance modulus to the host galaxy, MGC -02-11-023, of 35.69 mag (Theureau et al., 2007, A&A, 465, 71) and correcting for Milky Way extinction, the current absolute magnitude is M_r = -16.8 mag and rising. This is at the low end of the peak luminosity distribution of SNe IIn and the H-alpha line is relatively narrow, perhaps indicating that AT2021aapa is a non-terminal LBV eruption
The following Classification spectrum was provided:
Obsdate: 2021-10-16 12:25:00
Instrument: KAST
Telescope: 3m Lick Shane Reflector
Details of the object and its spectra can be viewed here: https://www.wis-tns.org/object/2021aapa
Date Received (UTC): 2021-10-20 16:23:47 Sender: Kyle Davis
Group: UCSC
Kyle Davis report/s a classification of object: SN 2021aapa
Type: SN IInRedshift: 0.032
Remarks: We measure a H-alpha FWHM velocity of 1,300 km/s. Using a Tully-Fisher distance modulus to the host galaxy, MGC -02-11-023, of 35.69 mag (Theureau et al., 2007, A&A, 465, 71) and correcting for Milky Way extinction, the current absolute magnitude is M_r = -16.8 mag and rising. This is at the low end of the peak luminosity distribution of SNe IIn and the H-alpha line is relatively narrow, perhaps indicating that AT2021aapa is a non-terminal LBV eruption
The following Classification spectrum was provided:
Obsdate: 2021-10-16 12:25:00
Instrument: KAST
Telescope: 3m Lick Shane Reflector
Details of the object and its spectra can be viewed here: https://www.wis-tns.org/object/2021aapa