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Fraction of Clumpy Star-Forming Galaxies at $0.5\leq z\leq 3$ in UVCANDELS: Dependence on Stellar Mass and Environment by Sattari, Zahra; Mobasher, Bahram; Chartab, Nima; Kelson, Daniel D.; Teplitz, Harry I.; Rafelski, Marc; Grogin, Norman A.; Koekemoer, Anton M.; Wang, Xin; Windhorst, Rogier A.; Alavi, Anahita; Prichard, Laura; Sunnquist, Ben; Gardner, Jonathan P.; Gawiser, Eric; Hathi, Nimish P.; Hayes, Matthew J.; Ji, Zhiyuan; Mehta, Vihang; Robertson, Brant E.; Scarlata, Claudia; Yung, L. Y. Aaron; Conselice, Christopher J.; Dai, Y. Sophia; Guo, Yicheng; Lucas, Ray A.; Martin, Alec; Ravindranath, Swara is a scholarly article available to read on EtoBox.

What is Fraction of Clumpy Star-Forming Galaxies at $0.5\leq z\leq 3$ in UVCANDELS: Dependence on Stellar Mass and Environment about?

High-resolution imaging of galaxies in rest-frame UV has revealed the existence of giant star-forming clumps prevalent in high redshift galaxies. Studying these sub-structures provides important information about their formation and evolution and informs theoretical galaxy evolution models. We present a new method to identify clumps in galaxies' high-resolution rest-frame UV images. Using imaging data from CANDELS and UVCANDELS, we identify star-forming clumps in an HST/F160W$\leq 25$ AB mag sample of 6767 galaxies at $0.5\leq z\leq 3$ in four fields, GOODS-N, GOODS-S, EGS, and COSMOS. We use a low-pass band filter in Fourier space to reconstruct the background image of a galaxy and detect small-scale features (clumps) on the background-subtracted image. Clumpy galaxies are defined as those having at least one off-center clump that contributes a minimum of 10$\%$ of the galaxy's total rest-frame UV flux. We measure the fraction of clumpy galaxies ($\rm f_{clumpy}$) as a function of stellar mass, redshift, and galaxy environment. Our results indicate that $\rm f_{clumpy}$ increases with redshift, reaching $\sim 65\%$ at $z\sim 1.5$. We also find that $\rm f_{clumpy}$ in low-mass gal

Author

Sattari, Zahra; Mobasher, Bahram; Chartab, Nima; Kelson, Daniel D.; Teplitz, Harry I.; Rafelski, Marc; Grogin, Norman A.; Koekemoer, Anton M.; Wang, Xin; Windhorst, Rogier A.; Alavi, Anahita; Prichard, Laura; Sunnquist, Ben; Gardner, Jonathan P.; Gawiser, Eric; Hathi, Nimish P.; Hayes, Matthew J.; Ji, Zhiyuan; Mehta, Vihang; Robertson, Brant E.; Scarlata, Claudia; Yung, L. Y. Aaron; Conselice, Christopher J.; Dai, Y. Sophia; Guo, Yicheng; Lucas, Ray A.; Martin, Alec; Ravindranath, Swara

Published

2023

Language

EN