New JWST redshifts for the host galaxies of CDF-S XT1 and XT2: Understanding their nature

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Table 2.

Comparison of host parameters obtained from the literature and by our SED fitting using the Bagpipes (Carnall et al. 2018) and Prospector (Leja et al. 2017) packages.

Target	z	Log(M_*/M_⊙)	SFR/(M_⊙/yr)	A_V (mag)	Ref.
(1)	(2)	(3)	(4)	(5)	(6)
Parameters obtained from the literature
XT1	2.23 $_{- 1.84}^{+ 0.98}$ $_{-1.84}^{+0.98}$	7.99 ± 0.20	1.15 ± 0.04	0.021	(1)
XT2	0.738	9.07	0.81	0.02	(2)

Parameters derived using `Bagpipes`
XT1	$2 . 7_{- 0.08}^{+ 0.14}$ $2.7_{-0.08}^{+0.14}$	$8 . 35_{- 0.11}^{+ 0.11}$ $8.35_{-0.11}^{+0.11}$	$0 . 85_{- 0.22}^{+ 0.30}$ $0.85_{-0.22}^{+0.30}$	$0 . 34_{- 0.14}^{+ 0.12}$ $0.34_{-0.14}^{+0.12}$	(3)
XT2	3.4598	$10 . 75_{- 0.01}^{+ 0.01}$ $10.75_{-0.01}^{+0.01}$	$156 . 92_{- 2.19}^{+ 2.19}$ $156.92_{-2.19}^{+2.19}$	$1 . 41_{- 0.01}^{+ 0.01}$ $1.41_{-0.01}^{+0.01}$	(3)

Parameters derived using `Prospector`
XT1	$2 . 87_{- 0.24}^{+ 0.16}$ $2.87_{-0.24}^{+0.16}$	$8 . 50_{- 0.07}^{+ 0.06}$ $8.50_{-0.07}^{+0.06}$	$0 . 44_{- 0.12}^{+ 0.16}$ $0.44_{-0.12}^{+0.16}$	$0 . 02_{- 0.02}^{+ 0.05}$ $0.02_{-0.02}^{+0.05}$	(3)
XT2	3.4598	$10 . 68_{- 0.01}^{+ 0.01}$ $10.68_{-0.01}^{+0.01}$	$158 . 93_{- 2.70}^{+ 2.31}$ $158.93_{-2.70}^{+2.31}$	$1 . 25_{- 0.01}^{+ 0.01}$ $1.25_{-0.01}^{+0.01}$	(3)

Notes. Column 1: Target. Column 2: Host galaxy redshift. Columns 3 and 4: Logarithmic of the host galaxy stellar mass and SFR, respectively. Column 5: Dust attenuation. Column 6: References: (1) Bauer et al. (2017), (2) Xue et al. (2019), and (3) This work.

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