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UV-bright Star-form...
UV-bright Star-forming Clumps and Their Host Galaxies in UVCANDELS at 0.5 ≤ z ≤ 1
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Martin, Alec (author)
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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- (author)
- Stockholms universitet,Institutionen för astronomi,Oskar Klein-centrum för kosmopartikelfysik (OKC)
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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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(creator_code:org_t)
- 2023
- 2023
- English.
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In: Astrophysical Journal. - 0004-637X .- 1538-4357. ; 955:2
- Related links:
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https://doi.org/10.3...
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https://urn.kb.se/re...
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https://doi.org/10.3...
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Abstract
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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.
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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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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show less...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Astronomy Astrop ...
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Astrophysical Jo ...
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Stockholm University