TY - JOUR
T1 - Spatially Resolved Stellar Populations of 0.3 < z < 6.0 Galaxies in WHL 0137-08 and MACS 0647+70 Clusters as Revealed by JWST
T2 - How Do Galaxies Grow and Quench over Cosmic Time?
AU - Abdurro’uf,
AU - Coe, Dan
AU - Jung, Intae
AU - Ferguson, Henry C.
AU - Brammer, Gabriel
AU - Iyer, Kartheik G.
AU - Bradley, Larry D.
AU - Dayal, Pratika
AU - Windhorst, Rogier A.
AU - Zitrin, Adi
AU - Meena, Ashish Kumar
AU - Oguri, Masamune
AU - Diego, Jose M.
AU - Kokorev, Vasily
AU - Dimauro, Paola
AU - Adamo, Angela
AU - Conselice, Christopher J.
AU - Welch, Brian
AU - Vanzella, Eros
AU - Hsiao, Tiger Yu Yang
AU - Xu, Xinfeng
AU - Roy, Namrata
AU - Mulcahey, Celia R.
N1 - Funding Information:
We thank the anonymous referee for providing valuable comments that helped to improve this paper. We thank Takahiro Morishita for the useful discussion and comments. This work is based on observations made with the NASA/ESA/CSA James Webb Space Telescope (JWST). Some of the data presented in this paper were obtained from the Mikulski Archive for Space Telescopes (MAST) at the Space Telescope Science Institute. The specific observations analyzed can be accessed via doi: 10.17909/d2er-wq71 and doi: 10.17909/cqfq-5n80 . STScI is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS526555. Support to MAST for these data is provided by the NASA Office of Space Science via grant NAG57584 and by other grants and contracts.
Funding Information:
We thank the anonymous referee for providing valuable comments that helped to improve this paper. We thank Takahiro Morishita for the useful discussion and comments. This work is based on observations made with the NASA/ESA/CSA James Webb Space Telescope (JWST). Some of the data presented in this paper were obtained from the Mikulski Archive for Space Telescopes (MAST) at the Space Telescope Science Institute. The specific observations analyzed can be accessed via doi:10.17909/d2er-wq71 and doi:10.17909/cqfq-5n80. STScI is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS526555. Support to MAST for these data is provided by the NASA Office of Space Science via grant NAG57584 and by other grants and contracts.
Funding Information:
A. and T.H. are funded by a grant for JWST-GO-01433 provided by STScI under NASA contract NAS5-03127. The CosmicDawn Center is funded by the Danish National Research Foundation (DNRF) under grant #140. P.D. acknowledges support from the NWO grant 016.VIDI.189.162 (“ODIN”) and from the European Commission’s and University of Groningen’s CO-FUND Rosalind Franklin program. R.A.W. acknowledges support from NASA JWST Interdisciplinary Scientist grants NAG5-12460, NNX14AN10G, and 80NSSC18K0200 from GSFC. A.Z. and A.K.M. acknowledge support by grant 2020750 from the United States–Israel Binational Science Foundation (BSF) and grant 2109066 from the United States National Science Foundation (NSF), and by the Ministry of Science & Technology, Israel. M.O. acknowledges support from JSPS KAKENHI grant Nos. JP22H01260, JP20H05856, JP20H00181, and JP22K21349. A.A. acknowledges support from the Swedish Research Council (Vetenskapsrådet project grants 2021-05559). E.V. acknowledges financial support through grants PRIN-MIUR 2017WSCC32, 2020SKSTHZ, and the INAF GO Grant 2022 (P.I. E. Vanzella).
Publisher Copyright:
© 2023. The Author(s). Published by the American Astronomical Society.
PY - 2023/3/1
Y1 - 2023/3/1
N2 - We study the spatially resolved stellar populations of 444 galaxies at 0.3 < z < 6.0 in two clusters (WHL 0137-08 and MACS 0647+70) and a blank field, combining imaging data from the Hubble Space Telescope and JWST to perform spatially resolved spectral energy distribution (SED) modeling using piXedfit. The high spatial resolution of the imaging data combined with magnification from gravitational lensing in the cluster fields allows us to resolve a large fraction of our galaxies (109) to subkiloparsec scales. At redshifts around cosmic noon and higher (2.5 ≲ z ≲ 6.0), we find mass-doubling times to be independent of radius, inferred from flat specific star formation rate (sSFR) radial profiles and similarities between the half-mass and half-SFR radii. At lower redshifts (1.5 ≲ z ≲ 2.5), a significant fraction of our star-forming galaxies shows evidence for nuclear starbursts, inferred from a centrally elevated sSFR and a much smaller half-SFR radius compared to the half-mass radius. At later epochs, we find more galaxies suppress star formation in their centers but are still actively forming stars in the disk. Overall, these trends point toward a picture of inside-out galaxy growth consistent with theoretical models and simulations. We also observe a tight relationship between the central mass surface density and global stellar mass with ∼0.38 dex scatter. Our analysis demonstrates the potential of spatially resolved SED analysis with JWST data. Future analysis with larger samples will be able to further explore the assembly of galaxy mass and the growth of their structures.
AB - We study the spatially resolved stellar populations of 444 galaxies at 0.3 < z < 6.0 in two clusters (WHL 0137-08 and MACS 0647+70) and a blank field, combining imaging data from the Hubble Space Telescope and JWST to perform spatially resolved spectral energy distribution (SED) modeling using piXedfit. The high spatial resolution of the imaging data combined with magnification from gravitational lensing in the cluster fields allows us to resolve a large fraction of our galaxies (109) to subkiloparsec scales. At redshifts around cosmic noon and higher (2.5 ≲ z ≲ 6.0), we find mass-doubling times to be independent of radius, inferred from flat specific star formation rate (sSFR) radial profiles and similarities between the half-mass and half-SFR radii. At lower redshifts (1.5 ≲ z ≲ 2.5), a significant fraction of our star-forming galaxies shows evidence for nuclear starbursts, inferred from a centrally elevated sSFR and a much smaller half-SFR radius compared to the half-mass radius. At later epochs, we find more galaxies suppress star formation in their centers but are still actively forming stars in the disk. Overall, these trends point toward a picture of inside-out galaxy growth consistent with theoretical models and simulations. We also observe a tight relationship between the central mass surface density and global stellar mass with ∼0.38 dex scatter. Our analysis demonstrates the potential of spatially resolved SED analysis with JWST data. Future analysis with larger samples will be able to further explore the assembly of galaxy mass and the growth of their structures.
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U2 - 10.3847/1538-4357/acba06
DO - 10.3847/1538-4357/acba06
M3 - Article
AN - SCOPUS:85150492480
SN - 0004-637X
VL - 945
JO - Astrophysical Journal
JF - Astrophysical Journal
IS - 2
M1 - 117
ER -