SN 2022hrs spectrum (13,0 mag)


Classification was done with GELATO (Harutyunyan et al. 2008, A&A 488, 383):
fit to SN 2002bo type Ia (7 days before maximum).

Spectrum in DAT file: *** DOWNLOAD ***
Spectrum in 1D FIT file: *** DOWNLOAD ***


Expansion velocity estimating based on SiII blue shifted absorption feature:

Observed SiII(6355) wavelength ------> 6062A
NGC 4647 redshift ------> z = 0.0047
Expansion velocity ------> Vexp = c * (6062 - 6355 * (1 + z) / (6355 * (1 + z))) = -15160 [km/s]










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