Understanding type Ia supernovae through their U-band spectra

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Volume 614 (June 2018)

A&A, 614 (2018) A71

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Table 1

SN U-band properties and Ca high velocity feature classification.

Name	Phase − 8 to − 4			Phase − 2 to 2			Phase 4 to 8			Ca HVF

	uNi	uSi	uCa	uTi	uNi	uSi	uCa	uTi	uNi	uSi	uCa	uTi

SNF20050728-006	1.76 ± 0.04	3.41 ± 0.04	2.53 ± 0.03	1.97 ± 0.04	2.04 ± 0.05	3.38 ± 0.06	2.77 ± 0.04	1.92 ± 0.04	2.62 ± 0.04	3.16 ± 0.03	3.00 ± 0.03	2.12 ± 0.03	Y

SNF20050821-007	2.00 ± 0.04	3.51 ± 0.04	2.29 ± 0.03	2.28 ± 0.04	2.32 ± 0.04	3.73 ± 0.04	2.50 ± 0.03	2.24 ± 0.04	2.61 ± 0.04	3.96 ± 0.04	2.70 ± 0.03	2.47 ± 0.04	Y

SNF20051003-004	1.57 ± 0.04	2.57 ± 0.03	2.44 ± 0.02	1.96 ± 0.03	–	–	–	–	2.65 ± 0.04	2.79 ± 0.03	2.90 ± 0.02	2.15 ± 0.03	–

SNF20060512-001	1.94 ± 0.04	2.71 ± 0.03	2.23 ± 0.02	1.76 ± 0.03	2.25 ± 0.04	2.76 ± 0.03	2.42 ± 0.02	1.78 ± 0.03	2.66 ± 0.04	2.97 ± 0.03	2.67 ± 0.02	2.01 ± 0.03	Y

SNF20060526-003	1.75 ± 0.04	3.03 ± 0.04	2.46 ± 0.03	2.09 ± 0.04	2.14 ± 0.04	3.04 ± 0.03	2.71 ± 0.03	2.01 ± 0.03	–	–	–	–	Y

SNF20060609-002	–	–	–	–	1.77 ± 0.04	2.69 ± 0.03	2.72 ± 0.03	1.89 ± 0.03	2.35 ± 0.04	2.73 ± 0.03	2.90 ± 0.03	2.09 ± 0.03	–

SNF20060618-023	1.32 ± 0.05	2.41 ± 0.05	2.15 ± 0.04	1.45 ± 0.04	–	–	–	–	2.48 ± 0.05	2.76 ± 0.04	2.76 ± 0.04	1.99 ± 0.04	–

SNF20060621-015	1.88 ± 0.04	3.02 ± 0.03	2.57 ± 0.02	1.91 ± 0.03	2.21 ± 0.04	3.00 ± 0.03	2.82 ± 0.02	1.95 ± 0.03	2.82 ± 0.04	2.96 ± 0.03	3.05 ± 0.03	2.24 ± 0.03	N

SNF20060907-000	–	–	–	–	2.24 ± 0.04	3.00 ± 0.03	2.88 ± 0.02	2.00 ± 0.03	2.98 ± 0.04	3.07 ± 0.03	3.13 ± 0.03	2.38 ± 0.03	–

SNF20060916-002	1.59 ± 0.04	2.87 ± 0.03	2.46 ± 0.03	2.00 ± 0.03	–	–	–	–	2.54 ± 0.04	2.89 ± 0.03	2.90 ± 0.03	2.17 ± 0.03	N

SNF20061011-005	–	–	–	–	–	–	–	–	–	–	–	–	Y

SNF20061021-003	1.67 ± 0.04	3.19 ± 0.03	2.66 ± 0.03	1.90 ± 0.03	2.05 ± 0.04	3.20 ± 0.03	2.94 ± 0.03	1.92 ± 0.03	–	–	–	–	N

SNF20070330-024	1.93 ± 0.04	3.20 ± 0.04	2.35 ± 0.03	2.36 ± 0.04	2.26 ± 0.04	3.34 ± 0.03	2.77 ± 0.03	2.16 ± 0.03	2.67 ± 0.04	3.15 ± 0.03	2.79 ± 0.02	2.21 ± 0.03	–

SNF20070420-001	1.67 ± 0.05	3.30 ± 0.06	2.42 ± 0.04	2.33 ± 0.05	–	–	–	–	2.82 ± 0.06	3.21 ± 0.05	2.90 ± 0.04	2.24 ± 0.04	–

SNF20070424-003	1.86 ± 0.04	3.42 ± 0.04	2.52 ± 0.03	2.09 ± 0.03	2.23 ± 0.05	3.23 ± 0.05	2.80 ± 0.04	2.06 ± 0.04	2.84 ± 0.06	3.04 ± 0.04	2.95 ± 0.04	2.34 ± 0.04	Y

SNF20070506-006	1.92 ± 0.04	2.79 ± 0.03	2.26 ± 0.02	1.82 ± 0.03	2.11 ± 0.04	2.88 ± 0.03	2.47 ± 0.02	1.85 ± 0.03	2.62 ± 0.04	3.15 ± 0.03	2.74 ± 0.02	2.10 ± 0.03	–

SNF20070630-006	–	–	–	–	2.07 ± 0.04	3.28 ± 0.04	2.73 ± 0.03	1.97 ± 0.03	2.66 ± 0.06	3.20 ± 0.05	2.94 ± 0.05	2.23 ± 0.04	Y

SNF20070712-003	1.75 ± 0.04	2.78 ± 0.03	2.63 ± 0.03	1.82 ± 0.03	2.16 ± 0.04	2.87 ± 0.03	2.87 ± 0.03	1.90 ± 0.03	2.72 ± 0.05	2.76 ± 0.03	3.08 ± 0.03	2.21 ± 0.03	N

SNF20070717-003	2.03 ± 0.05	3.50 ± 0.05	2.71 ± 0.03	2.01 ± 0.04	2.48 ± 0.07	3.20 ± 0.06	3.03 ± 0.06	2.17 ± 0.04	2.98 ± 0.07	3.10 ± 0.05	3.17 ± 0.05	2.38 ± 0.04	N

SNF20070802-000	1.68 ± 0.04	3.65 ± 0.03	2.40 ± 0.02	2.29 ± 0.03	2.09 ± 0.04	3.84 ± 0.04	2.72 ± 0.03	2.14 ± 0.03	2.60 ± 0.08	3.48 ± 0.08	2.87 ± 0.05	2.32 ± 0.05	Y

SNF20070803-005	1.53 ± 0.04	2.29 ± 0.03	2.10 ± 0.02	1.73 ± 0.03	2.02 ± 0.04	2.39 ± 0.03	2.27 ± 0.02	1.84 ± 0.03	2.64 ± 0.04	2.39 ± 0.03	2.45 ± 0.02	2.06 ± 0.03	–

SNF20070810-004	1.90 ± 0.04	3.75 ± 0.05	2.66 ± 0.03	2.01 ± 0.03	–	–	–	–	2.77 ± 0.05	3.37 ± 0.04	3.07 ± 0.04	2.28 ± 0.04	N

SNF20070817-003	–	–	–	–	2.29 ± 0.04	3.09 ± 0.03	2.79 ± 0.03	2.17 ± 0.03	3.17 ± 0.08	3.11 ± 0.05	3.04 ± 0.05	2.51 ± 0.04	N

SNF20070818-001	–	–	–	–	2.24 ± 0.06	3.59 ± 0.08	2.71 ± 0.04	2.30 ± 0.05	3.13 ± 0.15	3.42 ± 0.13	3.00 ± 0.10	2.47 ± 0.07	–

SNF20070831-015	–	–	–	–	2.17 ± 0.04	3.22 ± 0.03	2.48 ± 0.03	1.86 ± 0.03	2.58 ± 0.04	3.32 ± 0.04	2.64 ± 0.03	2.04 ± 0.03	Y

SNF20070902-018	–	–	–	–	2.18 ± 0.04	2.84 ± 0.03	2.82 ± 0.03	1.98 ± 0.03	–	–	–	–	–

SNF20071003-004	–	–	–	–	–	–	–	–	2.91 ± 0.07	3.28 ± 0.05	3.05 ± 0.04	2.27 ± 0.04	–

SNF20071021-000	1.97 ± 0.04	3.93 ± 0.03	2.52 ± 0.02	2.59 ± 0.03	2.35 ± 0.04	3.92 ± 0.03	2.82 ± 0.02	2.36 ± 0.03	2.91 ± 0.04	3.52 ± 0.03	2.98 ± 0.02	2.55 ± 0.03	–

SNF20080507-000	1.78 ± 0.04	2.79 ± 0.03	2.25 ± 0.03	1.69 ± 0.03	2.24 ± 0.04	2.96 ± 0.03	2.50 ± 0.02	1.84 ± 0.03	2.75 ± 0.05	3.22 ± 0.04	2.69 ± 0.03	2.10 ± 0.03	–

SNF20080510-001	1.86 ± 0.04	3.19 ± 0.04	2.66 ± 0.03	1.88 ± 0.03	2.33 ± 0.04	3.22 ± 0.04	3.06 ± 0.04	2.03 ± 0.03	2.81 ± 0.04	3.06 ± 0.03	3.10 ± 0.03	2.25 ± 0.03	–

SNF20080512-010	–	–	–	–	2.07 ± 0.04	3.01 ± 0.03	2.65 ± 0.03	2.08 ± 0.03	2.72 ± 0.04	2.94 ± 0.03	2.77 ± 0.03	2.38 ± 0.03	N

SNF20080514-002	1.75 ± 0.04	2.78 ± 0.03	2.63 ± 0.02	2.12 ± 0.03	2.19 ± 0.04	2.85 ± 0.03	2.80 ± 0.02	2.25 ± 0.03	2.87 ± 0.04	2.91 ± 0.03	2.95 ± 0.02	2.60 ± 0.03	–

SNF20080522-000	1.39 ± 0.04	2.34 ± 0.03	2.17 ± 0.02	1.76 ± 0.03	1.87 ± 0.04	2.49 ± 0.03	2.48 ± 0.02	1.87 ± 0.03	2.48 ± 0.04	2.56 ± 0.03	2.63 ± 0.02	2.04 ± 0.03	–

SNF20080522-011	1.81 ± 0.04	3.19 ± 0.03	2.60 ± 0.02	2.00 ± 0.03	2.12 ± 0.04	3.18 ± 0.03	2.87 ± 0.02	1.99 ± 0.03	2.72 ± 0.04	3.10 ± 0.03	3.05 ± 0.02	2.20 ± 0.03	Y

SNF20080531-000	1.90 ± 0.04	3.70 ± 0.03	2.66 ± 0.02	2.23 ± 0.03	2.28 ± 0.04	3.54 ± 0.03	2.90 ± 0.02	2.15 ± 0.03	2.90 ± 0.04	3.26 ± 0.03	3.06 ± 0.03	2.44 ± 0.03	Y

SNF20080610-000	–	–	–	–	2.35 ± 0.04	3.13 ± 0.04	3.03 ± 0.04	1.99 ± 0.03	2.94 ± 0.05	3.11 ± 0.04	3.18 ± 0.04	2.26 ± 0.04	–

SNF20080614-010	1.47 ± 0.05	3.12 ± 0.06	2.69 ± 0.05	1.96 ± 0.04	2.09 ± 0.05	3.26 ± 0.05	2.96 ± 0.04	2.20 ± 0.04	2.82 ± 0.06	3.11 ± 0.05	3.00 ± 0.05	2.53 ± 0.05	N

SNF20080620-000	–	–	–	–	2.32 ± 0.04	3.10 ± 0.03	2.97 ± 0.02	2.07 ± 0.03	–	–	–	–	–

SNF20080623-001	2.05 ± 0.04	3.64 ± 0.03	2.60 ± 0.02	2.30 ± 0.03	2.29 ± 0.04	3.52 ± 0.03	2.93 ± 0.02	2.10 ± 0.03	2.94 ± 0.04	3.37 ± 0.03	3.13 ± 0.02	2.40 ± 0.03	Y

SNF20080626-002	1.69 ± 0.04	3.36 ± 0.04	2.47 ± 0.03	2.34 ± 0.04	2.11 ± 0.04	3.43 ± 0.03	2.79 ± 0.02	2.15 ± 0.03	2.66 ± 0.04	3.26 ± 0.03	2.95 ± 0.02	2.24 ± 0.03	Y

SNF20080720-001	–	–	–	–	1.96 ± 0.04	3.60 ± 0.03	2.69 ± 0.02	2.12 ± 0.03	2.57 ± 0.04	3.31 ± 0.03	2.89 ± 0.02	2.25 ± 0.03	Y

SNF20080725-004	1.88 ± 0.04	3.48 ± 0.03	2.42 ± 0.03	2.14 ± 0.03	2.19 ± 0.04	3.56 ± 0.03	2.66 ± 0.03	2.08 ± 0.03	2.78 ± 0.06	3.53 ± 0.06	2.97 ± 0.04	2.25 ± 0.04	Y

SNF20080803-000	1.74 ± 0.07	3.42 ± 0.11	2.51 ± 0.06	2.00 ± 0.06	1.93 ± 0.04	3.18 ± 0.04	2.63 ± 0.03	1.88 ± 0.03	2.84 ± 0.11	3.05 ± 0.07	2.84 ± 0.07	2.13 ± 0.05	–

SNF20080810-001	1.61 ± 0.04	2.69 ± 0.03	2.62 ± 0.03	1.84 ± 0.03	2.10 ± 0.04	2.74 ± 0.03	2.82 ± 0.02	1.98 ± 0.03	2.88 ± 0.05	2.80 ± 0.03	2.94 ± 0.03	2.44 ± 0.03	N

SNF20080821-000	1.54 ± 0.04	3.09 ± 0.04	2.42 ± 0.03	1.92 ± 0.03	1.94 ± 0.04	3.05 ± 0.03	2.70 ± 0.03	1.95 ± 0.03	2.55 ± 0.05	3.01 ± 0.04	2.90 ± 0.03	2.09 ± 0.03	N

SNF20080825-010	1.65 ± 0.04	3.00 ± 0.03	2.58 ± 0.02	1.83 ± 0.03	2.06 ± 0.04	3.09 ± 0.03	2.78 ± 0.02	1.95 ± 0.03	2.74 ± 0.04	3.00 ± 0.03	2.90 ± 0.03	2.32 ± 0.03	–

SNF20080908-000	2.04 ± 0.04	3.41 ± 0.03	2.61 ± 0.02	2.10 ± 0.03	–	–	–	–	2.96 ± 0.04	3.10 ± 0.03	3.07 ± 0.03	2.31 ± 0.03	Y

SNF20080909-030	2.05 ± 0.04	2.76 ± 0.03	2.33 ± 0.02	1.80 ± 0.03	2.27 ± 0.04	2.80 ± 0.03	2.47 ± 0.02	1.83 ± 0.03	–	–	–	–	Y

SNF20080913-031	–	–	–	–	2.58 ± 0.04	3.32 ± 0.03	2.67 ± 0.03	1.96 ± 0.03	–	–	–	–	Y

SNF20080914-001	1.82 ± 0.04	3.49 ± 0.03	2.60 ± 0.02	1.82 ± 0.03	2.06 ± 0.04	3.27 ± 0.03	2.77 ± 0.02	1.95 ± 0.03	–	–	–	–	–

SNF20080918-000	–	–	–	–	1.83 ± 0.04	3.60 ± 0.04	2.53 ± 0.03	2.07 ± 0.03	–	–	–	–	Y

SNF20080918-004	1.97 ± 0.04	3.22 ± 0.03	2.71 ± 0.03	2.17 ± 0.03	2.48 ± 0.04	2.97 ± 0.03	2.92 ± 0.03	2.20 ± 0.03	–	–	–	–	N

SNF20080919-000	1.48 ± 0.04	3.15 ± 0.04	2.40 ± 0.03	1.94 ± 0.04	1.80 ± 0.04	3.14 ± 0.03	2.63 ± 0.03	1.93 ± 0.03	–	–	–	–	Y

SNF20080919-001	1.85 ± 0.04	2.62 ± 0.03	2.24 ± 0.02	1.65 ± 0.03	2.27 ± 0.04	2.71 ± 0.03	2.50 ± 0.02	1.75 ± 0.03	2.66 ± 0.04	2.90 ± 0.03	2.77 ± 0.02	2.05 ± 0.03	N

SNF20080919-002	1.58 ± 0.04	2.93 ± 0.04	2.83 ± 0.04	1.88 ± 0.04	–	–	–	–	–	–	–	–	N

SNF20080920-000	–	–	–	–	1.98 ± 0.04	3.51 ± 0.03	2.59 ± 0.02	2.16 ± 0.03	–	–	–	–	Y

SNF20080926-009	2.00 ± 0.04	3.34 ± 0.04	2.60 ± 0.03	1.85 ± 0.03	–	–	–	–	2.64 ± 0.05	3.33 ± 0.04	2.95 ± 0.03	2.17 ± 0.03	–

SN2004ef	1.53 ± 0.04	3.48 ± 0.03	2.24 ± 0.02	2.48 ± 0.03	2.12 ± 0.04	3.73 ± 0.03	2.61 ± 0.02	2.29 ± 0.03	2.73 ± 0.04	3.52 ± 0.03	2.81 ± 0.02	2.57 ± 0.03	Y

SN2005cf	1.98 ± 0.04	3.59 ± 0.03	2.41 ± 0.02	2.20 ± 0.03	–	–	–	–	–	–	–	–	Y

SN2005el	1.75 ± 0.04	3.20 ± 0.03	2.61 ± 0.02	2.10 ± 0.03	2.27 ± 0.04	3.26 ± 0.03	2.86 ± 0.02	2.28 ± 0.03	2.87 ± 0.04	3.12 ± 0.03	2.96 ± 0.02	2.47 ± 0.03	N

SN2005hc	–	–	–	–	2.09 ± 0.04	3.36 ± 0.03	2.51 ± 0.02	2.08 ± 0.03	2.63 ± 0.04	3.30 ± 0.03	2.72 ± 0.03	2.30 ± 0.03	–

SN2005hj	–	–	–	–	1.73 ± 0.04	2.62 ± 0.03	2.50 ± 0.03	1.81 ± 0.03	2.30 ± 0.04	2.67 ± 0.03	2.74 ± 0.03	1.91 ± 0.03	–

SN2005ir	–	–	–	–	1.96 ± 0.05	3.35 ± 0.05	2.64 ± 0.04	2.05 ± 0.04	–	–	–	–	N

SN2006X	–	3.60 ± 0.03	2.26 ± 0.03	2.90 ± 0.04	–	–	–	–	–	3.70 ± 0.03	2.58 ± 0.03	2.43 ± 0.04	–

SN2006cj	1.60 ± 0.04	2.83 ± 0.03	2.48 ± 0.03	1.85 ± 0.03	1.97 ± 0.04	2.90 ± 0.03	2.79 ± 0.02	1.93 ± 0.03	2.59 ± 0.04	2.91 ± 0.03	2.95 ± 0.03	2.13 ± 0.03	N

SN2006dm	1.84 ± 0.04	3.16 ± 0.03	2.72 ± 0.03	2.15 ± 0.04	2.33 ± 0.04	3.09 ± 0.03	2.92 ± 0.03	2.23 ± 0.03	2.93 ± 0.04	3.09 ± 0.03	3.01 ± 0.03	2.75 ± 0.04	N

SN2006do	–	–	–	–	2.26 ± 0.04	3.24 ± 0.03	2.62 ± 0.03	2.32 ± 0.04	2.97 ± 0.04	3.23 ± 0.03	2.85 ± 0.03	2.64 ± 0.04	N

SN2006ob	–	–	–	–	2.18 ± 0.05	2.97 ± 0.04	2.75 ± 0.03	2.04 ± 0.04	–	–	–	–	N

SN2007bd	–	–	–	–	2.12 ± 0.04	3.39 ± 0.03	2.80 ± 0.02	2.15 ± 0.03	2.75 ± 0.04	3.21 ± 0.03	2.93 ± 0.02	2.32 ± 0.03	N

SN2007le	1.47 ± 0.04	3.47 ± 0.03	2.35 ± 0.02	2.41 ± 0.03	–	–	–	–	2.55 ± 0.04	3.30 ± 0.03	2.80 ± 0.03	2.25 ± 0.03	–

SN2008ec	1.48 ± 0.04	3.04 ± 0.03	2.70 ± 0.02	1.84 ± 0.03	1.96 ± 0.04	3.06 ± 0.03	2.92 ± 0.02	1.98 ± 0.03	2.77 ± 0.04	2.97 ± 0.03	3.01 ± 0.02	2.37 ± 0.03	N

SN2010dt	2.09 ± 0.04	3.22 ± 0.03	2.73 ± 0.02	1.92 ± 0.03	2.46 ± 0.04	3.13 ± 0.03	3.02 ± 0.02	2.00 ± 0.03	3.01 ± 0.04	3.02 ± 0.03	3.20 ± 0.02	2.37 ± 0.03	–

SN2011bc	1.97 ± 0.04	3.26 ± 0.03	2.31 ± 0.02	1.90 ± 0.03	2.19 ± 0.04	3.42 ± 0.03	2.52 ± 0.02	1.92 ± 0.03	2.72 ± 0.04	3.58 ± 0.03	2.81 ± 0.02	2.16 ± 0.03	Y

SN2011be	1.65 ± 0.04	2.74 ± 0.03	2.51 ± 0.02	1.90 ± 0.03	1.99 ± 0.04	2.81 ± 0.03	2.71 ± 0.02	1.96 ± 0.03	–	–	–	–	N

PTF09dlc	1.86 ± 0.04	3.52 ± 0.03	2.38 ± 0.02	2.03 ± 0.03	2.19 ± 0.04	3.60 ± 0.03	2.64 ± 0.02	2.08 ± 0.03	2.74 ± 0.04	3.38 ± 0.03	2.87 ± 0.02	2.35 ± 0.03	Y

PTF09dnl	1.57 ± 0.04	3.17 ± 0.03	2.19 ± 0.02	2.37 ± 0.03	2.00 ± 0.04	3.27 ± 0.02	2.46 ± 0.02	2.22 ± 0.03	2.58 ± 0.04	3.19 ± 0.03	2.62 ± 0.02	2.38 ± 0.03	Y

PTF09fox	1.71 ± 0.04	3.21 ± 0.03	2.54 ± 0.03	2.07 ± 0.03	2.10 ± 0.04	3.20 ± 0.03	2.82 ± 0.03	1.98 ± 0.03	2.76 ± 0.04	3.11 ± 0.03	3.00 ± 0.03	2.16 ± 0.03	N

PTF09foz	1.92 ± 0.04	3.28 ± 0.03	2.54 ± 0.03	1.97 ± 0.03	2.32 ± 0.04	3.25 ± 0.03	2.77 ± 0.03	2.00 ± 0.03	3.15 ± 0.04	3.26 ± 0.03	3.03 ± 0.03	2.50 ± 0.03	–

PTF10hmv	–	–	–	–	2.03 ± 0.04	3.02 ± 0.03	2.59 ± 0.02	1.81 ± 0.03	2.49 ± 0.04	3.21 ± 0.03	2.84 ± 0.02	2.06 ± 0.03	Y

PTF10icb	1.62 ± 0.04	2.80 ± 0.03	2.55 ± 0.02	1.81 ± 0.03	2.01 ± 0.04	2.79 ± 0.03	2.81 ± 0.02	1.89 ± 0.03	2.71 ± 0.04	2.82 ± 0.03	3.03 ± 0.02	2.17 ± 0.03	N

PTF10mwb	1.85 ± 0.04	3.02 ± 0.03	2.76 ± 0.02	1.91 ± 0.03	2.31 ± 0.04	3.05 ± 0.03	2.96 ± 0.02	2.06 ± 0.03	3.02 ± 0.04	3.00 ± 0.03	3.15 ± 0.02	2.49 ± 0.03	N

PTF10ndc	–	–	–	–	1.96 ± 0.04	3.25 ± 0.03	2.69 ± 0.02	2.04 ± 0.03	2.56 ± 0.04	3.12 ± 0.03	2.87 ± 0.03	2.12 ± 0.03	N

Notes. See Sect. 2.3 for parameter definitions and Sect. 6.1 for HVF classification.

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