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The metal enrichment of a galaxy is determined by the cycle of baryons in outflows, inflows, and star formation. The relative contribution and timescale of each process sets the relationship between stellar mass, metallicity, and the star…

In the Local Group spiral galaxy M33, we investigate the correlation between the star formation rate (SFR) surface density, Sigma_SFR, and the gas density Sigma_gas (molecular, atomic, and total). We also explore whether there are other…

宇宙学与河外天体物理 · 物理学 2015-05-14 S. Verley , E. Corbelli , C. Giovanardi , L. K. Hunt

We present new H$\alpha$ photometry for the Star-Formation Reference Survey (SFRS), a representative sample of star-forming galaxies in the local Universe. Combining these data with the panchromatic coverage of the SFRS, we provide…

We investigate the relation between the star formation rate (SFR) and the stellar mass (M), i.e. the Main Sequence (MS) relation of star-forming galaxies, at 1.3<=z<6 in the first four HST Frontier Fields, based on rest-frame UV…

Circumnuclear star formation (SF) is generally seen in galaxies hosting active galactic nuclei (AGN); however, the connection between the AGN activity and SF in them is less well understood. To explore this connection on scales of a few…

星系天体物理 · 物理学 2024-06-27 Payel Nandi , C. S. Stalin , Poulomi Dam , D. J. Saikia

Recent studies have shown that star formation in mergers does not seem to follow the same Schmidt-Kennicutt (KS) relation as in spiral disks, presenting a higher star formation rate (SFR) for a given gas column density. In this paper we…

We explore a large uniformly selected sample of H${\alpha}$ selected star-forming galaxies (SFGs) at z=0.40,0.84,1.47,2.23 to unveil the evolution of the star formation rate (SFR) function and the stellar mass function. We find strong…

宇宙学与河外天体物理 · 物理学 2015-06-17 David Sobral , Philip N. Best , Ian Smail , Bahram Mobasher , John Stott , David Nisbet

The star formation rate (SFR), the number of stars formed per unit of time, is a fundamental quantity in the evolution of the Universe. While turbulence is believed to play a crucial role in setting the SFR, the exact mechanism remains…

星系天体物理 · 物理学 2024-10-02 Patrick Hennebelle , Noé Brucy , Tine Colman

Understanding star formation is problematic as it originates in the large scale dynamics of a galaxy but occurs on the small scale of an individual star forming event. This paper presents the first numerical simulations to resolve the star…

星系天体物理 · 物理学 2015-06-12 Ian A. Bonnell , Clare L. Dobbs , Rowan J. Smith

Observations show that star-forming galaxies reside on a tight three-dimensional plane between mass, gas-phase metallicity and star formation rate (SFR), which can be explained by the interplay between metal-poor gas inflows, SFR and…

星系天体物理 · 物理学 2018-06-06 Jorryt Matthee , Joop Schaye

Galaxy mergers can change the rate at which stars are formed. We can trace when these changes occur in simulations of galaxy mergers. However, for observed galaxies we do not know how the star formation rate (SFR) evolves along the merger…

星系天体物理 · 物理学 2026-01-14 W. J. Pearson , L. Wang , V. Rodriguez-Gomez , B. Margalef-Bentabol , L. E. Suelves

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

Quenched galaxies are often observed to contain a strong bulge component. The key question is whether this reflects a causal connection - can star formation be quenched dynamically by bulges or the spheroids of early-type galaxies? We…

星系天体物理 · 物理学 2020-05-08 Jindra Gensior , J. M. Diederik Kruijssen , Benjamin W. Keller

We study the correlation of galaxy structural properties with their location relative to the SFR-M* correlation, also known as the star formation "main sequence" (SFMS), in the CANDELS and GAMA surveys and in a semi-analytic model (SAM) of…

For four well studied spiral galaxies (M33, M81, M100 and M101) we consider the dependencies of star formation rate (SFR) and star formation efficiency (SFE = SFR/M_{gas}) both on the radial distance R and on some kinematic parameters of…

天体物理学 · 物理学 2009-11-11 A. V. Zasov , O. V. Abramova

Understanding star formation rates (SFR) is a central goal of modern star-formation models, which mainly involve gravity, turbulence and, in some cases, magnetic fields (B-fields). However, a connection between B-fields and SFR has never…

星系天体物理 · 物理学 2017-06-27 Hua-bai Li , Hangjin Jiang , Xiaodan Fan , Qilao Gu , Yapeng Zhang

We present near-infrared (H- and K-band) SINFONI integral-field observations of the circumnuclear star formation rings in five nearby spiral galaxies. We made use of the relative intensities of different emission lines (i.e. [FeII], HeI,…

天体物理学 · 物理学 2009-11-13 J. Falcón-Barroso , T. Boeker , E. Schinnerer , J. H. Knapen , S. Ryder

One of the most profound empirical laws of star formation is the Gao-Solomon relation, a linear correlation between the star formation rate (SFR) and the dense molecular gas mass. It is puzzling how the complicated physics in star-formation…

We analyzed 17 galaxy clusters, and investigated, for the first time, the dependence of the SFR and sSFR as a function of projected distance (as a proxy for environment) and stellar mass for cluster galaxies in an intermediate-to-high…

星系天体物理 · 物理学 2018-06-01 Tatiana F. Lagana , M. P. ulmer

We estimate the current extinction-corrected H$\alpha$ star formation rate (SFR) of the different morphological components that shape galaxies (bulges, bars, and disks). We use a multi-component photometric decomposition based on SDSS…