Determining the stellar masses of submillimetre galaxies: the critical importance of star formation histories

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Table 1

Stellar masses of simulated submm galaxies and the estimates recovered from the SED modelling.

Type^a	SFH^b	log (M_∗/M_⊙)		log (M_SED/M_SIM)
		Mean	Median	Mean	Median	Std. Dev.

Simulation	complex	11.70 ± 0.01		...	···
Grasil	cont+burst	11.68 ± 0.02		−0.01 ± 0.02		0.27
C10	double burst	11.70 ± 0.01		0.01 ± 0.01		0.09
Magphys	cont+burst	11.80 ± 0.01		0.10 ± 0.01		0.10
LePhare	tau	11.66 ± 0.03		−0.04 ± 0.03		0.40
C10	tau	11.66 ± 0.01		−0.04 ± 0.01		0.14
C10	single burst	11.49 ± 0.01		−0.21 ± 0.01		0.09

Notes.

^(a)

Simulated values, or the SED fitting method: Grasil (Silva et al. 1998; Iglesias-Páramo et al. 2007), Magphys (da Cunha et al. 2008), the method of Cirasuolo et al. (2010), and LePhare (Arnouts et al. 1999; Ilbert et al. 2006).

^(b)

Assumed SFH being either continuous SFH with a burst (cont+burst), double burst, single burst, or exponentially declining (tau).

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