The ALMA-CRISTAL survey - Discovery of a 15 kpc-long gas plume in a z = 4.54 Lyman-α blob

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Volume 689 (September 2024)

A&A, 689 (2024) A145

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Table 3.

Results of the parametric 2D fitting to the [C II] line map of CRISTAL-01a.

Property	Value
SW clump
Center (RA)	10^h00^m54.505^s ± 0.003^s
Center (Dec)	$2 ° 34^{'} 34 \overset{″}{.} 34 \pm 0 \overset{″}{.} 02$ $2^\circ 34^\prime 34{{\overset{\prime\prime}{.}}}34\,\pm\,0{{\overset{\prime\prime}{.}}}02$
R_eff [pkpc]	2.4 ± 0.4
Sérsic index (n)	1.0 ± 0.3
Axis ratio (minor/major)	0.82 ± 0.09
Integrated flux [Jy km s⁻¹]	0.39 ± 0.08
PA [degrees]	175 ± 45

NE clump
Center (RA)	10^h00^m54.537^s ± 0.02^s
Center (Dec)	$2 ° 34^{'} 34 \overset{″}{.} 75 \pm 0 \overset{″}{.} 03$ $2^\circ 34^\prime 34{{\overset{\prime\prime}{.}}}75\,\pm\,0{{\overset{\prime\prime}{.}}}03$
R_eff [pkpc]	0.8 ± 0.3
Integrated flux [Jy km s⁻¹]	0.03 ± 0.02

Total flux ^(a) (SW + NE)[Jy km s⁻¹]	0.5 ± 0.2
Centroid separation [arcsec]	0.63 ± 0.06

Notes. The table separates the fitted parameters for each clump. Radii are circularized and given in physical kiloparsec (pkpc).

^(a)

Flux has been corrected by a factor 1.17 to account for emission outside the velocity integration range.

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