The Type Ia supernova 2021hem: A 2003fg-like event in an apparently hostless environment

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Table 2.

Light-curve fits.

Filter	JD peak	Peak app. Mag.	Δm₁₅ (mag)
Gaussian Spline fits

B	2459316.46 ± 0.31	16.338 ± 0.009	1.036 ± 0.051
g_ztf	2459316.60 ± 0.26	16.159 ± 0.014	0.823 ± 0.032
V	2459317.39 ± 0.37	16.250 ± 0.010	0.607 ± 0.034
r_ztf	2459316.07 ± 0.31	16.251 ± 0.016	0.469 ± 0.024
i_ztf	2459315.69 ± 0.32	16.698 ± 0.016	0.379 ± 0.028

SNooPy ‘max_model fit’ ^(a)

B	⋯	16.184 ± 0.011 ± 0.012	⋯
g_ztf	⋯	16.087 ± 0.013 ± 0.014	⋯
V	⋯	16.115 ± 0.015 ± 0.019	⋯
r_ztf	⋯	16.184 ± 0.012 ± 0.022	⋯
i_ztf	⋯	16.567 ± 0.026 ± 0.022	⋯
J	⋯	16.163 ± 0.077 ± 0.044	⋯
H	⋯	16.339 ± 0.062 ± 0.055	⋯

Notes.

^(a)

Peak magnitudes include K-correction and extinction correction. Uncertainties correspond to fit and systematic errors.

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