Spectroscopic observations of PHz G237.01+42.50: A galaxy protocluster at z = 2.16 in the Cosmos field

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Volume 654 (October 2021)

A&A, 654 (2021) A121

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Table 8.

G237 structures SFR.

Members	N	SFR	SFRD
		(M_⊙ yr⁻¹)	(M_⊙ yr⁻¹ cMpc⁻³)
Full: 2.15 ≤ z_spec < 2.20	31	1485 ± 71	0.080 ± 0.004
ss1: 2.15 ≤ z_spec ≤ 2.164	20	1002 ± 58	0.229 ± 0.013
ss2: 2.19 ≤ z_spec ≤ 2.20	8	429 ± 41	0.115 ± 0.011
HAE ^(a) (w/o z_spec members)	32	715	0.163
Full+HAE	63	2200 ± 71	0.119 ± 0.004
ss1+HAE	52	1717 ± 58	0.392 ± 0.013
SPIRE: 1.8 < z_phot < 2.5	11	2408	0.130
Full+HAE+SPIRE ^(b)	70	3995	0.216
Core ^(c)	6	436 ± 41	9.6 ± 0.9

Notes.

^(a)

The HAE sample contains 38 sources, of which six are also present in ss1 and in the full spectroscopic samples, their SFRs are thus not considered in this subsample. We note that the HAE SFRs are derived from the extinction-corrected Hα luminosity (Koyama et al. 2021).

^(b)

Four SPIRE sources are already included in the full spectroscopic sample and are thus not considered in the SPIRE subsample for the total SFR estimate.

^(c)

We consider the core the A component with four spectroscopic members, of which three are HAEs, and two additional HAEs. The volume of the core is 45 cMpc³, corresponding to 0.8′ × 1.1′ = 1.45 × 1.89 cMpc², and a transverse distance of 16.4 cMpc, corresponding to Δz = 2.1637−2.1517.

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