A meeting at z ∼ 3: Young massive galaxies and an AGN within 30 kpc of the luminous QSO LBQS 0302–0019

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Volume 653 (September 2021)

A&A, 653 (2021) A122

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Table 1.

Physical parameters of identified companion galaxies.

	n^(a)	b/a^(c)	m_F125W (AB) ^(d)	m_Ks (AB) ^(e)	m_F125W − m_Ks	t_⋆^(f)	log(M_⋆/L_V) ^(g)	log(M_⋆) ^(h)
			[mag]	[mag]	[mag]	[Myr]		[M_⊙]
Jil1	3.8 ± 0.5	0.60 ± 0.05	23.70 ± 0.27	22.22 ± 0.03	1.48 ± 0.30
Jil2	1.3 ± 0.5	0.26 ± 0.07	24.74 ± 0.53	24.75 ± 0.23	−0.01 ± 0.75
Jil3	1.6 ± 0.9	0.54 ± 0.08	25.69 ± 0.25	> 25.78	< 0.40	< 59	< − 0.7	< 9.9
Jil4	0.7 ± 0.1	0.60 ± 0.04	24.81 ± 0.11	24.02 ± 0.09	0.80 ± 0.19

Notes.

^(a)

Best-fit Sersic index estimated from the HST image.

^(b)

Best-fit effetive radius estimated from the HST image.

^(c)

Best-fit axis-ratio estimated from the HST image.

^(d)

Best-fit integrated brightness in the HST image.

^(e)

Best-fit integrated brightness in the HAWKI-I image assuming morphological parameters inferred from the HST image.

^(f)

Best-fit luminosity-weighted age of single-stellar population model from the observed colors without dust attenuation.

^(g)

Best-fit mass-to-light ratio of the best-fit single-stellar population model.

^(h)

Best-fit integrated stellar mass given the luminosity and age of the single-stellar population.

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