Molecules and dust in Cassiopeia A - I. Synthesis in the supernova phase and processing by the reverse shock in the clumpy remnant

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Volume 564 (April 2014)

A&A, 564 (2014) A25

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Table 4

Ejecta temperature T_gas and number density n_gas for the type IIb Cas A supernova^a as a function of post-explosion time and ejecta zones (the mass coordinates of each zone in the He-core is given).

		Zone 1a	Zone 1b	Zone 2	Zone 3a	Zone 3b	Zone 4a	Zone 4b
		1.68–1.88 M_⊙	1.89–2.18 M_⊙	2.19–3.86 M_⊙	3.87–4.02 M_⊙	4.03–4.49 M_⊙	4.5–5.26 M_⊙	5.27–5.62 M_⊙
Time	T _gas	n _gas	n _gas	n _gas	n _gas	n _gas	n _gas	n _gas

100	6664	7.2(7)	1.4(8)	1.8(8)	2.0(8)	3.0(8)	7.2(8)	7.7(8)
200	2700	9.0(6)	1.7(7)	2.3(7)	2.5(7)	3.7(7)	9.4(7)	9.6(7)
300	1600	2.7(6)	5.0(6)	6.6(6)	7.5(6)	1.1(7)	2.8(7)	2.8(7)
400	1100	1.1(6)	2.1(6)	2.8(6)	3.2(6)	4.6(6)	1.2(7)	1.2(7)
500	820	5.8(5)	1.1(6)	1.4(6)	1.6(6)	2.3(6)	6.0(6)	6.0(6)
1000	330	7.2(4)	1.4(5)	1.8(5)	2.0(5)	3.0(5)	7.5(5)	7.8(5)
1500	200	2.2(4)	4.0(4)	5.3(4)	6.0(4)	8.8(4)	2.2(5)	2.3(5)
2000	140	9.0(3)	1.7(4)	2.3(4)	2.5(4)	3.7(4)	9.4(4)	9.6(4)
2500	100	4.6(3)	8.7(3)	1.1(4)	1.3(4)	1.9(4)	4.8(4)	4.9(4)
3000	80	2.7(3)	5.0(3)	6.6(3)	7.5(3)	1.1(4)	2.8(4)	2.8(4)

Notes. Time is in days, T_gas in Kelvin and n_gas in cm^-3. ; He-core mass = 5.62 M_⊙; ejecta velocity = 4000 km s^-1; and γ-ray Optical depth τ_γ = 15.

^(a)

The type IIb SN ejecta is characterised by the following parameters: progenitor mass = 19 M_⊙; explosion energy E_kin = 1 × 10⁵¹ erg

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