2022ApJ...933L..19T

Query : 2022ApJ...933L..19T

2022ApJ...933L..19T - Astrophys. J., 933, L19-L19 (2022/July-1)

Possible Systematic Rotation in the Mature Stellar Population of a z = 9.1 Galaxy.

TOKUOKA T., INOUE A.K., HASHIMOTO T., ELLIS R.S., LAPORTE N., SUGAHARA Y., MATSUO H., TAMURA Y., FUDAMOTO Y., MORIWAKI K., ROBERTS-BORSANI G., SHIMIZU I., YAMANAKA S., YOSHIDA N., ZACKRISSON E. and ZHENG W.

Abstract (from CDS):

We present new observations with the Atacama Large Millimeter/submillimeter Array for a gravitationally lensed galaxy at z = 9.1, MACS1149-JD1. [O III] 88 µm emission is detected at 10σ with a spatial resolution of ∼0.3 kpc in the source plane, enabling the most distant morphokinematic study of a galaxy. The [O III] emission is distributed smoothly without any resolved clumps and shows a clear velocity gradient with ΔV_obs/2σ_tot = 0.84 ± 0.23, where ΔV_obs is the observed maximum velocity difference and σ_tot is the velocity dispersion measured in the spatially integrated line profile, suggesting a rotating system. Assuming a geometrically thin self-gravitating rotation disk model, we obtain {V}_{\mathrm{rot}}/{\sigma }_{V}={0.67}_{-0.26}^{+0.73}, where V_rot and σ_V are the rotation velocity and velocity dispersion, respectively, still consistent with rotation. The resulting disk mass of {0.65}_{-0.40}^{+1.37}\times {10}^{9}M_☉ is consistent with being associated with the stellar mass identified with a 300 Myr old stellar population independently indicated by a Balmer break in the spectral energy distribution. We conclude that the most of the dynamical mass is associated with the previously identified mature stellar population that formed at z ∼ 15.

Journal keyword(s): Galaxy formation - Galaxy dynamics - Galaxy evolution - High-redshift galaxies

Errata: erratum vol. 944, art. L60 (2023)

Simbad objects: 1

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Number of rows : 1

N	Identifier	Otype	ICRS (J2000) RA	ICRS (J2000) DEC	Mag U	Mag B	Mag V	Mag R	Mag I	Sp type	#ref 1850 - 2026	#notes
1	[IKO2018] HFF4C-3358-4457	LeG	11 49 33.584	+22 24 45.78						~	96	0

Query : 2022ApJ...933L..19T

Basic data :

[IKO2018] HFF4C-3358-4457 -- Gravitationally Lensed Image of a Galaxy

G (2018ApJ,[IKO2018],...), G? (2016ApJ,[KOI2016],...), LeG ([MSG2024],[ZPZ2012]), LeI (2016ApJ,[TBD2016])

11 49 33.584 +22 24 45.78 (Optical) [ ] C 2012Natur.489..406Z

11 46 58.411 +22 41 26.56 [ ]

228.119721 +75.196660 [ ]

V(km/s) 293983 [180] / z(spectroscopic) 9.1096 [0.0006] / cz 2730989 [180] D 2018Natur.557..392H

J (AB) 25.80 [0.03] C 2018ApJ...854...73I

H (AB) 25.58 [0.02] C 2016MNRAS.459.3812M

F444W (AB) 25.6 [~] D 2025ApJ...981..136S

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`[IKO2018] HFF4C-3358-4457`	`[LBL2018] MACS1149 cluster 62`	`[TBD2016] 209.1`
`[KOI2016] HFF4C-YJ1`	`[MMD2015] HFF4C-9-1`	`[ZPZ2012] MACS 1149-JD`
`[KOI2016] HFF4C-3358-4457`	`[MSG2024] GTO 1199 3`	`[ZZI2017] 663`

References (96 between 1850 and 2026) (Total 96)
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