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The scatter of the star-forming main sequence (SFMS) holds a wealth of information about how galaxies evolve. The timescales encoded in this scatter can provide valuable insight into the relative importance of the physical processes…

星系天体物理 · 物理学 2025-04-08 Jenny T. Wan , Sandro Tacchella , Francesco D'Eugenio , Benjamin D. Johnson , Arjen van der Wel

Using a compilation of 25 studies from the literature, we investigate the evolution of the star-forming galaxy (SFG) Main Sequence (MS) in stellar mass and star formation rate (SFR) out to $z \sim 6$. After converting all observations to a…

星系天体物理 · 物理学 2015-06-19 Joshua S. Speagle , Charles L. Steinhardt , Peter L. Capak , John D. Silverman

Galaxies exhibit a tight correlation between their star-formation rate and stellar mass over a wide redshift range known as the star-forming main sequence (SFMS). With JWST, we can now investigate the SFMS at high redshifts down to masses…

The scatter (${\rm\sigma_{\text{sSFR}}}$) of the specific star formation rates (sSFRs) of galaxies is a measure of the diversity in their star formation histories (SFHs) at a given mass. In this paper we employ the EAGLE simulations to…

Observations have revealed that the star formation rate (SFR) and stellar mass (M$_{\rm star}$) of star-forming galaxies follow a tight relation known as the galaxy main sequence. However, what physical information is encoded in this…

星系天体物理 · 物理学 2019-01-16 Jorryt Matthee , Joop Schaye

Because the timescale of H$\alpha$ emission (several tens of Myr) following star formation is significantly shorter than that of UV radiation (a few hundred Myr), the H$\alpha$/UV flux ratio provides insight on the star formation histories…

星系天体物理 · 物理学 2018-09-25 Rhythm Shimakawa , Yusei Koyama , J. Xavier Prochaska , Yicheng Guo , Ken-ichi Tadaki , Tadayuki Kodama

The Star-Forming Main Sequence (SFMS) serves as a critical framework for understanding galaxy evolution, highlighting the relationship between star formation rates (SFR) and stellar masses M_* across cosmic time. Despite its significance,…

星系天体物理 · 物理学 2026-03-10 Zhicheng He , Enci Wang , Luis C. Ho , Huiyuan Wang , Yong Shi , Xu Kong , Tinggui Wang

By using the deepest available mid and far infrared surveys in the CANDELS, GOODS and COSMOS fields we study the evolution of the Main Sequence (MS) of star forming galaxies (SFGs) from z~0 to` ~2.5 at stellar masses larger than 10^{10}…

To investigate the variability of the star formation rate (SFR) of galaxies, we define a star formation change parameter, SFR$_{\rm 5Myr}$/SFR$_{\rm 800Myr}$ which is the ratio of the SFR averaged within the last 5 Myr to the SFR averaged…

星系天体物理 · 物理学 2020-04-08 Enci Wang , Simon J. Lilly

The scatter of the spatially resolved star formation main sequence (SFMS) is investigated in order to reveal signatures about the processes of galaxy formation and evolution. We have assembled a sample of 355 nearby galaxies with spatially…

The dispersion of the star-formation main sequence (SFMS) reflects the diversity of star formation histories and variation in star formation rates (SFRs) in star-forming galaxies (SFGs) with similar stellar masses ($M^\ast$). We examine the…

星系天体物理 · 物理学 2015-08-06 Kexin Guo , Xian Zhong Zheng , Tao Wang , Hai Fu

We describe a sub-galactic main sequence (SGMS) relating star formation rate surface density ($\Sigma_{\textrm{SFR}}$) and stellar mass density ($\Sigma_{\star}$) for distinct regions within star forming galaxies, including their nuclei. We…

星系天体物理 · 物理学 2017-01-18 A. Maragkoudakis , A. Zezas , M. L. N. Ashby , S. P. Willner

The redshift-dependent relation between galaxy stellar mass and star formation rate (the Star-Forming Sequence, or SFS) is a key observational yardstick for galaxy assembly. We use the SAGAbg-A sample of background galaxies from the…

We use a semi-analytic model for disk galaxies to explore the origin of the time evolution and small scatter of the galaxy SFR sequence -- the tight correlation between star-formation rate (SFR) and stellar mass (M_star). The steep decline…

宇宙学与河外天体物理 · 物理学 2015-05-14 Aaron A. Dutton , Frank C. van den Bosch , Avishai Dekel

A sample of 12614 star-forming galaxies (SFGs) with stellar mass >10^9.5 M_sun between 0.6<z<0.8 from COSMOS is selected to study the intrinsic scatter of the correlation between star formation rate (SFR) and stellar mass. We derive SFR…

宇宙学与河外天体物理 · 物理学 2015-06-17 Kexin Guo , Xian Zhong Zheng , Hai Fu

We present a comprehensive study of the star-forming main sequence (SFMS) and its scatter at redshifts $3 \leq z \leq 9$, using NIRCam photometry from the JADES survey in the GOODS-S and GOODS-N fields. Our analysis is based on a sample of…

We constrain the temporal power spectrum of the sSFR(t) of star-forming galaxies, using a well-defined sample of Main Sequence galaxies from MaNGA and our earlier measurements of the ratio of the SFR averaged within the last 5 Myr to that…

星系天体物理 · 物理学 2020-05-27 Enci Wang , Simon J. Lilly

Star-formation rates (SFR) of disk galaxies strongly correlate with stellar mass, with a small dispersion in SSFR at fixed mass, sigma~0.3 dex. With such small scatter this star-formation main sequence (SFMS) has been interpreted as…

星系天体物理 · 物理学 2014-06-23 Daniel D. Kelson

We present constraints on the timescale of star formation variability and the correlation between star formation and host halo accretion histories of star-forming (SF) central galaxies from the scatter of the stellar-to-halo mass relation…

星系天体物理 · 物理学 2019-10-07 ChangHoon Hahn , Jeremy L. Tinker , Andrew Wetzel
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