Tentative rotation in a galaxy at z ~ 14 with ALMA

Scholtz, J; Parlanti, E; Carniani, S; Kohandel, M; Sun, F; Danhaive, AL; Maiolino, R; Arribas, S; Bhatawdekar, R; Bunker, AJ; Charlot, S; D’Eugenio, F; Ferrara, A; Ji, Z; Jones, GC; Rinaldi, P; Robertson, B; Pallottini, A; Shivaei, I; Sun, Y; Tacchella, S; Übler, H; Venturi, G

Journal article

Tentative rotation in a galaxy at z ~ 14 with ALMA

Abstract:: We reanalysed the Atacama Large Millimeter/submillimeter Array (ALMA) observations of the [O iii] m emission line in JADES-GS-z14-0, so one of the most distant spectroscopically confirmed galaxies at z = 14.18. Our analysis shows a tentative detection of a velocity gradient of [O iii] m using three independent tests: (1) construction of moment maps; (2) extraction of integrated spectra from a grid of apertures; and (3) spectro-astrometry in both the image and uv planes, confirming the presence of the velocity gradient at significance. We performed kinematical fitting using the kinms code and estimated a dynamical mass of log(/) = , with the bulk of the uncertainties due to the degeneracy between dynamical mass and inclination. We measure an upper limit on the velocity dispersion () of km s−1 which results in an estimate of . This result, if confirmed with higher resolution observations, would imply that kinematically cold discs are already in place at . Comparison with mock observations from the SERRA cosmological simulations confirms that even low-resolution observations are capable of detecting a velocity gradient in galaxies as compact as JADES-GS-z14-0. This Letter shows that deeper ALMA or JWST (James Webb Space Telescope)/Near-Infrared Spectrograph integral field spectroscopy observations with high spatial resolution will be able to estimate an accurate dynamical mass for JADES-GS-z14-0, providing an upper limit to the stellar mass of this overluminous galaxy.

Publication status:: Published

Peer review status:: Peer reviewed

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APA Style

Scholtz, J., Parlanti, E., Carniani, S., Kohandel, M., Sun, F., Danhaive, A. L., Maiolino, R., Arribas, S., Bhatawdekar, R., Bunker, A. J., Charlot, S., D’Eugenio, F., Ferrara, A., Ji, Z., Jones, G. C., Rinaldi, P., Robertson, B., Pallottini, A., Shivaei, I., … Venturi, G. (2025). Tentative rotation in a galaxy at z ~ 14 with ALMA. Monthly Notices of the Royal Astronomical Society: Letters, 544(1), L113–L120.

MLA Style

Scholtz, J, et al. “Tentative Rotation in a Galaxy at z ~ 14 with ALMA.” Monthly Notices of the Royal Astronomical Society: Letters, vol. 544, no. 1, 2025, pp. L113–L120.

Chicago Style

Scholtz, J, E Parlanti, S Carniani, et al. 2025. “Tentative Rotation in a Galaxy at z ~ 14 with ALMA.” Monthly Notices of the Royal Astronomical Society: Letters 544 (1): L113–L120.
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