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UV-bright Star-form...
UV-bright Star-forming Clumps and Their Host Galaxies in UVCANDELS at 0.5 ≤ z ≤ 1
- Article/chapterEnglish2023
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LIBRIS-ID:oai:DiVA.org:su-223216
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https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-223216URI
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https://doi.org/10.3847/1538-4357/aced3eDOI
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Language:English
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Summary in:English
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Subject category:ref swepub-contenttype
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Subject category:art swepub-publicationtype
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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 (MUV ≤ −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.
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Guo, Yicheng
(author)
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Wang, Xin
(author)
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Koekemoer, Anton M.
(author)
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Rafelski, Marc
(author)
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Teplitz, Harry I.
(author)
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Windhorst, Rogier A.
(author)
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Alavi, Anahita
(author)
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Grogin, Norman A.
(author)
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Prichard, Laura
(author)
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Sunnquist, Ben
(author)
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Ceverino, Daniel
(author)
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Chartab, Nima
(author)
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Conselice, Christopher J.
(author)
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Dai, Y. Sophia
(author)
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Dekel, Avishai
(author)
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Gardner, Jonathan P.
(author)
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Gawiser, Eric
(author)
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Hathi, Nimish P.
(author)
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Hayes, Matthew J.,1977-Stockholms universitet,Institutionen för astronomi,Oskar Klein-centrum för kosmopartikelfysik (OKC)(Swepub:su)mhaye
(author)
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Jansen, Rolf A.
(author)
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Ji, Zhiyuan
(author)
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Koo, David C.
(author)
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Lucas, Ray A.
(author)
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Mandelker, Nir
(author)
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Mehta, Vihang
(author)
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Mobasher, Bahram
(author)
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Nedkova, Kalina V.
(author)
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Primack, Joel
(author)
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Ravindranath, Swara
(author)
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Robertson, Brant E.
(author)
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Rutkowski, Michael J.
(author)
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Sattari, Zahra
(author)
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Soto, Emmaris
(author)
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Yung, L. Y. Aaron
(author)
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Stockholms universitetInstitutionen för astronomi
(creator_code:org_t)
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In:Astrophysical Journal955:20004-637X1538-4357
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Martin, Alec
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Guo, Yicheng
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Wang, Xin
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Koekemoer, Anton ...
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Rafelski, Marc
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Teplitz, Harry I ...
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show more...
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Windhorst, Rogie ...
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Alavi, Anahita
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Grogin, Norman A ...
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Prichard, Laura
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Sunnquist, Ben
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Ceverino, Daniel
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Chartab, Nima
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Conselice, Chris ...
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Dai, Y. Sophia
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Dekel, Avishai
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Gardner, Jonatha ...
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Gawiser, Eric
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Hathi, Nimish P.
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Hayes, Matthew J ...
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Jansen, Rolf A.
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Ji, Zhiyuan
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Koo, David C.
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Lucas, Ray A.
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Mandelker, Nir
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Mehta, Vihang
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Mobasher, Bahram
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Nedkova, Kalina ...
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Primack, Joel
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Ravindranath, Sw ...
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Robertson, Brant ...
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Rutkowski, Micha ...
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Sattari, Zahra
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Soto, Emmaris
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Yung, L. Y. Aaro ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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Stockholm University