CLEAR: The Evolution of Spatially Resolved Star Formation in Galaxies between 0.5 less than or similar to z less than or similar to 1.7 Using H alpha Emission Line Maps
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CLEAR : The Evolution of Spatially Resolved Star Formation in Galaxies between 0.5 less than or similar to z less than or similar to 1.7 Using H alpha Emission Line Maps. / Matharu, Jasleen; Papovich, Casey; Simons, Raymond C.; Momcheva, Ivelina; Brammer, Gabriel; Ji, Zhiyuan; Backhaus, Bren E.; Cleri, Nikko J.; Estrada-Carpenter, Vicente; Finkelsteain, Steven L.; Finlator, Kristian; Giavalisco, Mauro; Jung, Intae; Muzzin, Adam; Nelson, Erica J.; Pillepich, Annalisa; Trump, Jonathan R.; Weiner, Benjamin.
In: Astrophysical Journal, Vol. 937, No. 1, 16, 01.09.2022.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - CLEAR
T2 - The Evolution of Spatially Resolved Star Formation in Galaxies between 0.5 less than or similar to z less than or similar to 1.7 Using H alpha Emission Line Maps
AU - Matharu, Jasleen
AU - Papovich, Casey
AU - Simons, Raymond C.
AU - Momcheva, Ivelina
AU - Brammer, Gabriel
AU - Ji, Zhiyuan
AU - Backhaus, Bren E.
AU - Cleri, Nikko J.
AU - Estrada-Carpenter, Vicente
AU - Finkelsteain, Steven L.
AU - Finlator, Kristian
AU - Giavalisco, Mauro
AU - Jung, Intae
AU - Muzzin, Adam
AU - Nelson, Erica J.
AU - Pillepich, Annalisa
AU - Trump, Jonathan R.
AU - Weiner, Benjamin
PY - 2022/9/1
Y1 - 2022/9/1
N2 - Using spatially resolved H alpha emission line maps of star-forming galaxies, we study the spatial distribution of star formation over a wide range in redshift (0.5 less than or similar to z less than or similar to 1.7). Our z similar to 0.5 measurements come from deep Hubble Space Telescope (HST) Wide Field Camera 3 G102 grism spectroscopy obtained as part of the CANDELS Ly alpha Emission at Reionization Experiment. For star-forming galaxies with log(M (*)/M (circle dot)) >= 8.96, the mean H alpha effective radius is 1.2 +/- 0.1 times larger than that of the stellar continuum, implying inside-out growth via star formation. This measurement agrees within 1 sigma with those measured at z similar to 1 and z similar to 1.7 from the 3D-HST and KMOS3D surveys, respectively, implying no redshift evolution. However, we observe redshift evolution in the stellar mass surface density within 1 kpc (sigma(1kpc)). Star-forming galaxies at z similar to 0.5 with a stellar mass of log(M (*)/M (circle dot)) = 9.5 have a ratio of sigma(1kpc) in H alpha relative to their stellar continuum that is lower by (19 +/- 2)% compared to z similar to 1 galaxies. sigma(1kpc,H alpha )/sigma(1kpc,Cont) decreases toward higher stellar masses. The majority of the redshift evolution in sigma(1kpc,H alpha )/sigma(1kpc,Cont) versus stellar mass stems from the fact that log(sigma(1kpc,H alpha )) declines twice as much as log(sigma(1kpc,Cont)) from z similar to 1 to 0.5 (at a fixed stellar mass of log(M (*)/M (circle dot)) = 9.5). By comparing our results to the TNG50 cosmological magneto-hydrodynamical simulation, we rule out dust as the driver of this evolution. Our results are consistent with inside-out quenching following in the wake of inside-out growth, the former of which drives the significant drop in sigma(1kpc,H alpha ) from z similar to 1 to z similar to 0.5.
AB - Using spatially resolved H alpha emission line maps of star-forming galaxies, we study the spatial distribution of star formation over a wide range in redshift (0.5 less than or similar to z less than or similar to 1.7). Our z similar to 0.5 measurements come from deep Hubble Space Telescope (HST) Wide Field Camera 3 G102 grism spectroscopy obtained as part of the CANDELS Ly alpha Emission at Reionization Experiment. For star-forming galaxies with log(M (*)/M (circle dot)) >= 8.96, the mean H alpha effective radius is 1.2 +/- 0.1 times larger than that of the stellar continuum, implying inside-out growth via star formation. This measurement agrees within 1 sigma with those measured at z similar to 1 and z similar to 1.7 from the 3D-HST and KMOS3D surveys, respectively, implying no redshift evolution. However, we observe redshift evolution in the stellar mass surface density within 1 kpc (sigma(1kpc)). Star-forming galaxies at z similar to 0.5 with a stellar mass of log(M (*)/M (circle dot)) = 9.5 have a ratio of sigma(1kpc) in H alpha relative to their stellar continuum that is lower by (19 +/- 2)% compared to z similar to 1 galaxies. sigma(1kpc,H alpha )/sigma(1kpc,Cont) decreases toward higher stellar masses. The majority of the redshift evolution in sigma(1kpc,H alpha )/sigma(1kpc,Cont) versus stellar mass stems from the fact that log(sigma(1kpc,H alpha )) declines twice as much as log(sigma(1kpc,Cont)) from z similar to 1 to 0.5 (at a fixed stellar mass of log(M (*)/M (circle dot)) = 9.5). By comparing our results to the TNG50 cosmological magneto-hydrodynamical simulation, we rule out dust as the driver of this evolution. Our results are consistent with inside-out quenching following in the wake of inside-out growth, the former of which drives the significant drop in sigma(1kpc,H alpha ) from z similar to 1 to z similar to 0.5.
KW - HST/WFC3 GRISM OBSERVATIONS
KW - PHYSICAL-PROPERTIES
KW - STELLAR POPULATION
KW - DISC GALAXIES
KW - HIGH-REDSHIFT
KW - GAS-FLOWS
KW - RADIAL-DISTRIBUTION
KW - QUIESCENT GALAXIES
KW - DUST ATTENUATION
KW - FORMATION RATES
U2 - 10.3847/1538-4357/ac8471
DO - 10.3847/1538-4357/ac8471
M3 - Journal article
VL - 937
JO - Astrophysical Journal
JF - Astrophysical Journal
SN - 0004-637X
IS - 1
M1 - 16
ER -
ID: 320350442