J/ApJ/960/53 Stellar half-mass radii for 3DHST+CANDELS gal. (van der Wel+, 2024)
Stellar half-mass radii of 0.5<z<2.3 galaxies: comparison with JWST/NIRCam
half-light radii.
van der Wel A., Martorano M., Haussler B., Nedkova K.V., Miller T.B.,
Brammer G.B., van de Ven G., Leja J., Bezanson R.S., Muzzin A.,
Marchesini D., de Graaff A., Nelson E.J., Kriek M., Bell E.F., Franx M.
<Astrophys. J., 960, 53 (2024)>
=2024ApJ...960...53V 2024ApJ...960...53V
ADC_Keywords: Galaxies, IR; Galaxies, radius; Redshifts; Surveys
Keywords: Galaxy evolution
Abstract:
We use CEERS JWST/NIRCam imaging to measure rest-frame near-IR light
profiles of 435 M*>1010M☉ galaxies in the redshift range of
0.5<z<2.3. We compare the resulting rest-frame 1.5-2µm half-light
radii (RNIR) with stellar half-mass radii (RM*) derived with
multicolor light profiles from CANDELS Hubble Space Telescope imaging.
In general agreement with previous work, we find that RNIR and RM*
are up to 40% smaller than the rest-frame optical half-light radius
Ropt. The agreement between RNIR and RM* is excellent, with a
negligible systematic offset (<0.03dex) up to z=2 for quiescent
galaxies and up to z=1.5 for star-forming galaxies. We also deproject
the profiles to estimate RM*,3D, the radius of a sphere containing
50% of the stellar mass. We present the R-M* distribution of galaxies
at 0.5<z<1.5, comparing Ropt, RM*, and RM*,3D. The slope is
significantly flatter for RM* and RM*,3D compared to Ropt, mostly
due to downward shifts in size for massive star-forming galaxies,
while RM* and RM*,3D do not show markedly different trends.
Finally, we show rapid evolution of the size (R∝(1+z)-1.7±0.1)
of massive (M*>1011M☉) quiescent galaxies between z=0.5 and
z=2.3, again comparing Ropt, RM*, and RM*,3D. We conclude that the
main tenets of the evolution of the size narrative established over
the past 20yr, based on rest-frame optical light profile analysis,
still hold in the era of JWST/NIRCam observations in the rest-frame
near-IR.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 93 15381 Stellar half-mass radii
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See also:
J/AJ/100/1091 : UBR photometry of 39 elliptical galaxies (Peletier+ 1990)
J/ApJ/604/521 : Luminosities & masses of galaxies out to z∼3 (Trujillo+, 2004)
J/ApJS/203/24 : Structural param. of galaxies in CANDELS (van der Wel+, 2012)
J/ApJ/763/73 : Surface density profiles of GOODS-South gal. (Szomoru+, 2013)
J/ApJS/214/24 : 3D-HST+CANDELS catalog (Skelton+, 2014)
J/MNRAS/476/1765 : MaNGA E and S galaxies properties (Li+, 2018)
J/ApJ/877/103 : Half-mass radii for galaxies at 1.0≤z≤2.5 (Suess+, 2019)
J/ApJ/905/170 : Mass-based structural param. for 3D-HST gal. (Mosleh+, 2020)
J/MNRAS/506/928 : Stellar mass-size relation for low M* gal. (Nedkova+, 2021)
J/ApJ/937/L33 : JWST morphological data at 4.4um & 1.5um (Suess+, 2022)
J/ApJ/945/155 : Color gradients of 3D-HST gal. (Miller+, 2023)
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1 I1 --- FID [1/5] CANDELS field as number (1)
3- 9 A7 --- Field CANDELS field; column added by CDS
11- 15 I5 --- ID [18/45616] Galaxy ID within Field (2)
17- 26 F10.6 deg RAdeg [34.2/215.4] Right ascension (J2000) (2)
28- 37 F10.6 deg DEdeg [-28/62.4] Declination (J2000) (2)
39- 43 F5.3 --- zphot [0.5/2.3] Photometric redshift
45- 50 F6.3 [Msun] logMs [8.7/11.8] Log of stellar mass (3)
52- 56 F5.3 [Msun] E_logMs [0.005/0.7] Upper uncertainty on logMs
58- 62 F5.3 [Msun] e_logMs [0.007/0.8] Lower uncertainty on logMs
64 I1 --- OT [0/1] Quiescent = 1, star forming = 0 (Sec. 2.2)
66- 72 F7.3 kpc Rh [0.17/124] Projected (2D) stellar half-mass
radius (Sec. 2.4) (4)
74- 78 F5.3 kpc e_Rh [0.01/9.99] Uncertainty on Rh
80- 86 F7.3 kpc Rh3D [0.18/114] Deprojected (3D) stellar half-mass
radius (Sec. 2.6) (5)
88- 93 F6.3 kpc e_Rh3D [0.058/18] Uncertainty on Rh3D
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Note (1): CANDELS field as follows:
1 = AEGIS
2 = COSMOS
3 = GOODS-N
4 = GOODS-S
5 = UDS
Note (2): from Skelton+ 2014, J/ApJS/214/24
(<[SWM2014] @{Field} NNNNN> in Simbad)
Note (3): from Leja+ 2020ApJ...893..111L 2020ApJ...893..111L with 16th- and 84th-percentile
uncertainty range
Note (4): defined as semi-major axis of half-mass ellipse
Note (5): defined as radius of sphere containing 50% of the stellar mass
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History:
From electronic version of the journal
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 06-Mar-2026