UV-bright Star-forming Clumps and Their Host Galaxies in UVCANDELS at 0.5 ≤ z ≤ 1

Alec Martin; Yicheng Guo; Xin Wang; Anton M. Koekemoer; Marc Rafelski; Harry I. Teplitz; Rogier A. Windhorst; Anahita Alavi; Norman A. Grogin; Laura Prichard; Ben Sunnquist; Daniel Ceverino; Nima Chartab; Christopher J. Conselice; Y. Sophia Dai; Avishai Dekel; Jonathan P. Gardner; Eric Gawiser; Nimish P. Hathi; Matthew J. Hayes; Rolf A. Jansen; Zhiyuan Ji; David C. Koo; Ray A. Lucas; Nir Mandelker; Vihang Mehta; Bahram Mobasher; Kalina V. Nedkova; Joel Primack; Swara Ravindranath; Brant E. Robertson; Michael J. Rutkowski; Zahra Sattari; Emmaris Soto; L. Y.Aaron Yung

doi:https://doi.org/10.3847/1538-4357/aced3e

UV-bright Star-forming Clumps and Their Host Galaxies in UVCANDELS at 0.5 ≤ z ≤ 1

Alec Martin, Yicheng Guo, Xin Wang, Anton M. Koekemoer, Marc Rafelski, Harry I. Teplitz, Rogier A. Windhorst, Anahita Alavi, Norman A. Grogin, Laura Prichard, Ben Sunnquist, Daniel Ceverino, Nima Chartab, Christopher J. Conselice, Y. Sophia Dai, Avishai Dekel, Jonathan P. Gardner, Eric Gawiser, Nimish P. Hathi, Matthew J. HayesRolf A. Jansen, Zhiyuan Ji, David C. Koo, Ray A. Lucas, Nir Mandelker, Vihang Mehta, Bahram Mobasher, Kalina V. Nedkova, Joel Primack, Swara Ravindranath, Brant E. Robertson, Michael J. Rutkowski, Zahra Sattari, Emmaris Soto, L. Y.Aaron Yung

Racah Institute of Physics

The Hebrew University of Jerusalem

Research output: Contribution to journal › Article › peer-review

Abstract

Giant star-forming clumps are a prominent feature of star-forming galaxies (SFGs) and contain important clues on galaxy formation and evolution. However, the basic demographics of clumps and their host galaxies remain uncertain. Using the Hubble Space Telescope/Wide Field Camera 3 F275W images from the Ultraviolet Imaging of the Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey, we detect and analyze giant star-forming clumps in galaxies at 0.5 ≤ z ≤ 1, connecting two epochs when clumps are common (at cosmic high noon, z ∼ 2) and rare (in the local Universe). We construct a clump sample whose rest-frame 1600 Å luminosity is 3 times higher than the most luminous local H ii regions (M _UV ≤ −16 AB). In our sample, 35% ± 3% of low-mass galaxies (log[M _∗/M _⊙] < 10) are clumpy (i.e., containing at least one off-center clump). This fraction changes to 22% ± 3% and 22% ± 4% for intermediate (10 ≤ log[M _∗/M _⊙] ≤ 10.5) and high-mass (log[M _∗/M _⊙] > 10.5) galaxies, in agreement with previous studies. When compared to similar-mass nonclumpy SFGs, low- and intermediate-mass clumpy SFGs tend to have higher star formation rates (SFRs) and bluer rest-frame U − V colors, while high-mass clumpy SFGs tend to be larger than nonclumpy SFGs. However, clumpy and nonclumpy SFGs have similar Sérsic index, indicating a similar underlying density profile. Furthermore, we investigate how the UV luminosity of star-forming regions correlates with the physical properties of host galaxies. On average, more luminous star-forming regions reside in more luminous, smaller, and/or higher specific SFR galaxies and are found closer to their hosts’ galactic centers.

Original language	English
Article number	106
Journal	Astrophysical Journal
Volume	955
Issue number	2
DOIs	https://doi.org/10.3847/1538-4357/aced3e
State	Published - 1 Oct 2023

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

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Martin, A., Guo, Y., Wang, X., Koekemoer, A. M., Rafelski, M., Teplitz, H. I., Windhorst, R. A., Alavi, A., Grogin, N. A., Prichard, L., Sunnquist, B., Ceverino, D., Chartab, N., Conselice, C. J., Dai, Y. S., Dekel, A., Gardner, J. P., Gawiser, E., Hathi, N. P., ... Yung, L. Y. A. (2023). UV-bright Star-forming Clumps and Their Host Galaxies in UVCANDELS at 0.5 ≤ z ≤ 1. Astrophysical Journal, 955(2), Article 106. https://doi.org/10.3847/1538-4357/aced3e

@article{57673ba717bb4b95af894ea3f73d3e67,

title = "UV-bright Star-forming Clumps and Their Host Galaxies in UVCANDELS at 0.5 ≤ z ≤ 1",

abstract = "Giant star-forming clumps are a prominent feature of star-forming galaxies (SFGs) and contain important clues on galaxy formation and evolution. However, the basic demographics of clumps and their host galaxies remain uncertain. Using the Hubble Space Telescope/Wide Field Camera 3 F275W images from the Ultraviolet Imaging of the Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey, we detect and analyze giant star-forming clumps in galaxies at 0.5 ≤ z ≤ 1, connecting two epochs when clumps are common (at cosmic high noon, z ∼ 2) and rare (in the local Universe). We construct a clump sample whose rest-frame 1600 {\AA} luminosity is 3 times higher than the most luminous local H ii regions (M UV ≤ −16 AB). In our sample, 35% ± 3% of low-mass galaxies (log[M ∗/M ⊙] < 10) are clumpy (i.e., containing at least one off-center clump). This fraction changes to 22% ± 3% and 22% ± 4% for intermediate (10 ≤ log[M ∗/M ⊙] ≤ 10.5) and high-mass (log[M ∗/M ⊙] > 10.5) galaxies, in agreement with previous studies. When compared to similar-mass nonclumpy SFGs, low- and intermediate-mass clumpy SFGs tend to have higher star formation rates (SFRs) and bluer rest-frame U − V colors, while high-mass clumpy SFGs tend to be larger than nonclumpy SFGs. However, clumpy and nonclumpy SFGs have similar S{\'e}rsic index, indicating a similar underlying density profile. Furthermore, we investigate how the UV luminosity of star-forming regions correlates with the physical properties of host galaxies. On average, more luminous star-forming regions reside in more luminous, smaller, and/or higher specific SFR galaxies and are found closer to their hosts{\textquoteright} galactic centers.",

author = "Alec Martin and Yicheng Guo and Xin Wang and Koekemoer, {Anton M.} and Marc Rafelski and Teplitz, {Harry I.} and Windhorst, {Rogier A.} and Anahita Alavi and Grogin, {Norman A.} and Laura Prichard and Ben Sunnquist and Daniel Ceverino and Nima Chartab and Conselice, {Christopher J.} and Dai, {Y. Sophia} and Avishai Dekel and Gardner, {Jonathan P.} and Eric Gawiser and Hathi, {Nimish P.} and Hayes, {Matthew J.} and Jansen, {Rolf A.} and Zhiyuan Ji and Koo, {David C.} and Lucas, {Ray A.} and Nir Mandelker and Vihang Mehta and Bahram Mobasher and Nedkova, {Kalina V.} and Joel Primack and Swara Ravindranath and Robertson, {Brant E.} and Rutkowski, {Michael J.} and Zahra Sattari and Emmaris Soto and Yung, {L. Y.Aaron}",

note = "Publisher Copyright: {\textcopyright} 2023. The Author(s). Published by the American Astronomical Society.",

year = "2023",

month = oct,

day = "1",

doi = "https://doi.org/10.3847/1538-4357/aced3e",

language = "الإنجليزيّة",

volume = "955",

journal = "Astrophysical Journal",

issn = "0004-637X",

publisher = "IOP Publishing Ltd.",

number = "2",

}

Martin, A, Guo, Y, Wang, X, Koekemoer, AM, Rafelski, M, Teplitz, HI, Windhorst, RA, Alavi, A, Grogin, NA, Prichard, L, Sunnquist, B, Ceverino, D, Chartab, N, Conselice, CJ, Dai, YS, Dekel, A, Gardner, JP, Gawiser, E, Hathi, NP, Hayes, MJ, Jansen, RA, Ji, Z, Koo, DC, Lucas, RA, Mandelker, N, Mehta, V, Mobasher, B, Nedkova, KV, Primack, J, Ravindranath, S, Robertson, BE, Rutkowski, MJ, Sattari, Z, Soto, E & Yung, LYA 2023, 'UV-bright Star-forming Clumps and Their Host Galaxies in UVCANDELS at 0.5 ≤ z ≤ 1', Astrophysical Journal, vol. 955, no. 2, 106. https://doi.org/10.3847/1538-4357/aced3e

TY - JOUR

T1 - UV-bright Star-forming Clumps and Their Host Galaxies in UVCANDELS at 0.5 ≤ z ≤ 1

AU - Martin, Alec

AU - Guo, Yicheng

AU - Wang, Xin

AU - Koekemoer, Anton M.

AU - Rafelski, Marc

AU - Teplitz, Harry I.

AU - Windhorst, Rogier A.

AU - Alavi, Anahita

AU - Grogin, Norman A.

AU - Prichard, Laura

AU - Sunnquist, Ben

AU - Ceverino, Daniel

AU - Chartab, Nima

AU - Conselice, Christopher J.

AU - Dai, Y. Sophia

AU - Dekel, Avishai

AU - Gardner, Jonathan P.

AU - Gawiser, Eric

AU - Hathi, Nimish P.

AU - Hayes, Matthew J.

AU - Jansen, Rolf A.

AU - Ji, Zhiyuan

AU - Koo, David C.

AU - Lucas, Ray A.

AU - Mandelker, Nir

AU - Mehta, Vihang

AU - Mobasher, Bahram

AU - Nedkova, Kalina V.

AU - Primack, Joel

AU - Ravindranath, Swara

AU - Robertson, Brant E.

AU - Rutkowski, Michael J.

AU - Sattari, Zahra

AU - Soto, Emmaris

AU - Yung, L. Y.Aaron

PY - 2023/10/1

Y1 - 2023/10/1

N2 - Giant star-forming clumps are a prominent feature of star-forming galaxies (SFGs) and contain important clues on galaxy formation and evolution. However, the basic demographics of clumps and their host galaxies remain uncertain. Using the Hubble Space Telescope/Wide Field Camera 3 F275W images from the Ultraviolet Imaging of the Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey, we detect and analyze giant star-forming clumps in galaxies at 0.5 ≤ z ≤ 1, connecting two epochs when clumps are common (at cosmic high noon, z ∼ 2) and rare (in the local Universe). We construct a clump sample whose rest-frame 1600 Å luminosity is 3 times higher than the most luminous local H ii regions (M UV ≤ −16 AB). In our sample, 35% ± 3% of low-mass galaxies (log[M ∗/M ⊙] < 10) are clumpy (i.e., containing at least one off-center clump). This fraction changes to 22% ± 3% and 22% ± 4% for intermediate (10 ≤ log[M ∗/M ⊙] ≤ 10.5) and high-mass (log[M ∗/M ⊙] > 10.5) galaxies, in agreement with previous studies. When compared to similar-mass nonclumpy SFGs, low- and intermediate-mass clumpy SFGs tend to have higher star formation rates (SFRs) and bluer rest-frame U − V colors, while high-mass clumpy SFGs tend to be larger than nonclumpy SFGs. However, clumpy and nonclumpy SFGs have similar Sérsic index, indicating a similar underlying density profile. Furthermore, we investigate how the UV luminosity of star-forming regions correlates with the physical properties of host galaxies. On average, more luminous star-forming regions reside in more luminous, smaller, and/or higher specific SFR galaxies and are found closer to their hosts’ galactic centers.

AB - Giant star-forming clumps are a prominent feature of star-forming galaxies (SFGs) and contain important clues on galaxy formation and evolution. However, the basic demographics of clumps and their host galaxies remain uncertain. Using the Hubble Space Telescope/Wide Field Camera 3 F275W images from the Ultraviolet Imaging of the Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey, we detect and analyze giant star-forming clumps in galaxies at 0.5 ≤ z ≤ 1, connecting two epochs when clumps are common (at cosmic high noon, z ∼ 2) and rare (in the local Universe). We construct a clump sample whose rest-frame 1600 Å luminosity is 3 times higher than the most luminous local H ii regions (M UV ≤ −16 AB). In our sample, 35% ± 3% of low-mass galaxies (log[M ∗/M ⊙] < 10) are clumpy (i.e., containing at least one off-center clump). This fraction changes to 22% ± 3% and 22% ± 4% for intermediate (10 ≤ log[M ∗/M ⊙] ≤ 10.5) and high-mass (log[M ∗/M ⊙] > 10.5) galaxies, in agreement with previous studies. When compared to similar-mass nonclumpy SFGs, low- and intermediate-mass clumpy SFGs tend to have higher star formation rates (SFRs) and bluer rest-frame U − V colors, while high-mass clumpy SFGs tend to be larger than nonclumpy SFGs. However, clumpy and nonclumpy SFGs have similar Sérsic index, indicating a similar underlying density profile. Furthermore, we investigate how the UV luminosity of star-forming regions correlates with the physical properties of host galaxies. On average, more luminous star-forming regions reside in more luminous, smaller, and/or higher specific SFR galaxies and are found closer to their hosts’ galactic centers.

UR - http://www.scopus.com/inward/record.url?scp=85173931015&partnerID=8YFLogxK

U2 - https://doi.org/10.3847/1538-4357/aced3e

DO - https://doi.org/10.3847/1538-4357/aced3e

M3 - مقالة

SN - 0004-637X

VL - 955

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 2

M1 - 106

ER -

UV-bright Star-forming Clumps and Their Host Galaxies in UVCANDELS at 0.5 ≤ z ≤ 1

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