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Related papers: Three Dusty Star Forming Galaxies at $z\sim1.5$: M…

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The relation between the star formation rate and the stellar mass of star-forming galaxies has been used to argue that major mergers cannot be the main driver of star formation. Here, we re-examine these arguments using the representative…

Astrophysics of Galaxies · Physics 2015-06-19 M. Puech , F. Hammer , M. Rodrigues , S. Fouquet , H. Flores , K. Disseau

We present an analysis of the spatial distribution of star formation in a sample of 60 visually identified galaxy merger candidates at z>1. Our sample, drawn from the 3D-HST survey, is flux-limited and was selected to have high star…

The majority of massive star-forming galaxies at $z\sim2$ have velocity gradients suggestive of rotation, in addition to large amounts of disordered motions. In this paper, we demonstrate that it is challenging to distinguish the regular…

We study the shape and evolution of the star formation main sequence in three independently developed semi-analytic models of galaxy formation. We focus, in particular, on the characterization of the model galaxies that are significantly…

Astrophysics of Galaxies · Physics 2019-03-15 Lan Wang , Gabriella De Lucia , Fabio Fontanot , Michaela Hirschmann

In recent years, significant growth in the amount of data available to astronomers has opened up the possibility to uncover fundamental correlations, linking the dust component of a galaxy to its star formation rate (SFR). In this paper, we…

Astrophysics of Galaxies · Physics 2022-02-23 Ciro Pappalardo , George J. Bendo , Mederic Boquien , Maarten Baes , Sebastien Viaene , Simone Bianchi , Jacopo Fritz

We use the first systematic data sets of CO molecular line emission in z~1-3 normal star forming galaxies for a comparison of the dependence of galaxy-averaged star formation rates on molecular gas masses at low and high redshifts, and in…

At $z=1-3$, the formation of new stars is dominated by dusty galaxies whose far-IR emission indicates they contain colder dust than local galaxies of a similar luminosity. We explore the reasons for the evolving IR emission of similar…

The increasing number of distant galaxies observed with ALMA by the ALPINE and REBELS surveys and the early release observations of the JWST promise to revolutionize our understanding of cosmic star formation and the assembly of normal,…

Astrophysics of Galaxies · Physics 2022-12-19 C. Di Cesare , L. Graziani , R. Schneider , M. Ginolfi , A. Venditti , P. Santini , L. K. Hunt

We analyze the formation histories of 19 galaxies from cosmological smoothed particle hydrodynamics zoom-in resimulations. We construct mock three-colour images and show that the models reproduce observed trends in the evolution of galaxy…

Astrophysics of Galaxies · Physics 2014-04-29 Michael Aumer , Simon D. M. White , Thorsten Naab

The assembly of galaxies can be described by the distribution of their star formation as a function of cosmic time. Thanks to the WFC3 grism on HST it is now possible to measure this beyond the local Universe. Here we present the spatial…

It is believed that massive galaxies have quenched their star formation because of active galactic nucleus feedback. However, recent studies have shown that some massive galaxies are still forming stars. We analyze the morphology of star…

Astrophysics of Galaxies · Physics 2020-06-04 Kun Xu , Chengze Liu , Yipeng Jing , Yunchong Wang , Shengdong Lu

The population of compact massive galaxies observed at z > 1 are hypothesised, both observationally and in simulations, to be merger remnants of gas-rich disc galaxies. To probe such a scenario we analyse a sample of 12 gas-rich and active…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-18 E. Ricciardelli , I. Trujillo , F. Buitrago , C. J. Conselice

Recent studies of galaxies ~2-3 Gyr after the Big Bang have revealed large, turbulent rotating systems. The existence of well-ordered rotation in galaxies during this peak epoch of cosmic star formation may suggest that gas accretion…

Astrophysics · Physics 2009-11-13 Daniel P. Stark , Mark Swinbank , Richard S. Ellis , Simon Dye , Ian R. Smail , Johan Richard

We present a study of the influence of galaxy mergers on star formation at 0.3<z<2.5. Major mergers are selected from the CANDELS/3D-HST catalog using a peak-finding algorithm. Mergers have projected galaxy nuclei separation of their…

Utilizing a high-resolution (114 pc/h) adaptive mesh-refinement cosmological galaxy formation simulation of the standard cold dark matter model with a large (2000-3000 galaxies with stellar mass greater than 1e9 Msun) statistical sample, we…

Cosmology and Nongalactic Astrophysics · Physics 2011-11-04 Renyue Cen

Galaxy mergers play a crucial role in shaping the morphology, the star formation, and the mass growth of galaxies across cosmic time. While mergers have been extensively investigated in the local Universe, the evolution of their frequency…

We present near-infrared integral field spectroscopy of ten Herschel selected galaxies at z~1.5. From detailed mapping of the H$\alpha$ and [NII] emission lines we trace the dynamics, star formation rates, metallicities and also investigate…

Astrophysics of Galaxies · Physics 2015-06-19 R. J. Williams , R. Maiolino , P. Santini , A. Marconi , G. Cresci , F. Mannucci , D. Lutz

We analyse the phase-space structure of simulated thick discs that are the result of a significant merger between a disc galaxy and a satellite. Our main goal is to establish what would be the characteristic imprints of a merger origin for…

Astrophysics of Galaxies · Physics 2015-05-13 Álvaro Villalobos , Amina Helmi

We investigate a large sample of massive galaxies at $z\sim1$ with combined $HST$ broad-band and grism observations to constrain the star-formation histories of these systems as they transition from a star-forming state to quiescence. Among…

Astrophysics of Galaxies · Physics 2020-01-08 Timothy Carleton , Yicheng Guo , Hooshang Nayyeri , Michael Cooper , Gregory Rudnick , Katherine Whitaker

In this review we discuss the evidence for galaxy interactions and mergers in the distant universe and the role of mergers in forming galaxies. Observations show that the fraction of massive (M> M_*) galaxies involved in major mergers is…

Astrophysics · Physics 2009-11-11 Christopher J. Conselice
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