The accretion burst of the massive young stellar object G323.46−0.08

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Volume 688 (August 2024)

A&A, 688 (2024) A8

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Table 4.

Summary of the burst parameters for all three settings.

Model	E_acc	M_acc	⟨Ṁ_acc⟩	L_peak
	[10⁴⁷ erg]	[M_Jup]	[10⁻³ M_⊙ yr⁻¹]	[L_pre]
Tmin	30 ± 12	230 ± 110	27 ± 12	$310_{- 140}^{+ 130}$ $310_{-140}^{+130}$
Mean	2.4 ± 1.0	19 ± 9	2.1 ± 1.0	$14_{- 6}^{+ 8}$ $14_{-6}^{+8}$
Tmax	0.4 ± 0.2	3.1 ± 1.7	0.4 ± 0.2	$2 . 6_{- 0.8}^{+ 0.9}$ $2.6_{-0.8}^{+0.9}$
K_s-based	$0 . 9_{- 0.7}^{+ 2.5}$ $0.9_{-0.7}^{+2.5}$	$7 . 3_{- 5.9}^{+ 20}$ $7.3_{-5.9}^{+20}$	$0 . 8_{- 0.6}^{+ 2.2}$ $0.8_{-0.6}^{+2.2}$	$5 . 4_{- 3.6}^{+ 16.6}$ $5.4_{-3.6}^{+16.6}$

Notes. The derived values span almost two orders of magnitude. The highest values (reached for Tmin) are probably too large. We consider the K_s-based range (highlighted) the most reliable (see text). The mass estimate is based on the assumption that the protostar is close to the ZAMS. If it is bloated, the mass (and the mass accretion rate) will be higher (cf. Sect. 5.3).

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