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Theories of how galaxies, the fundamental constituents of large-scale structure, form and evolve have undergone a dramatic paradigm shift in the last few decades. Earlier views were of rapid, early collapse and formation of basic…

天体物理学 · 物理学 2009-10-31 Curtis Struck

Star-forming galaxies can reach quiescence via rapid transition through merger-triggered starbursts that consequently affect both their kinematics and star formation rates. In this work, we analyze the spatially resolved kinematics of 89…

星系天体物理 · 物理学 2025-05-27 Bhavya Pardasani , K. Decker French

In models of hierarchical structure formation, interactions and mergers at high redshift play a key role in the formation and evolution of galaxies. Numerical modeling and observations of nearby systems explore the detailed physics of…

天体物理学 · 物理学 2007-05-23 Chris Mihos

The interplay between stellar populations and gas in local starburst galaxies is analyzed using images from the Hubble Space Telescope to map the ages of the young stellar components and to isolate the contribution of shocks on spatial…

天体物理学 · 物理学 2007-05-23 Daniela Calzetti

I use the spectroscopic data for galaxies in and around nearby (0.02<z<0.06) X-ray bright galaxy clusters, to show that the incidence of k+a (or post-starburst) galaxies (EW(Ha)<2 ang in emission and EW(Hd)>3 ang in absorption) may be…

宇宙学与河外天体物理 · 物理学 2015-06-15 Smriti Mahajan

We select E+A candidates from a spectroscopic dataset of ~800 field galaxies and measure the E+A fraction at 0.3<z<1 to be 2.7+/-1.1%, a value lower than that in galaxy clusters at comparable redshifts (11+/-3%). HST/WFPC2 imaging for five…

The galaxy population in rich local galaxy clusters shows a ratio of one quarter elliptical galaxies, two quarters S0 galaxies, and one quarter spiral galaxies. Observations of clusters at redshift 0.5 show a perspicuously different ratio,…

天体物理学 · 物理学 2009-11-07 Jens Bicker , U. Fritze-v. Alvensleben , K. J. Fricke

We present an analytic formalism that describes the evolution of the stellar, gas, and metal content of galaxies. It is based on the idea, inspired by hydrodynamic simulations, that galaxies live in a slowly-evolving equilibrium between…

宇宙学与河外天体物理 · 物理学 2015-05-30 Romeel Davé , Kristian Finlator , Benjamin D. Oppenheimer

In this review, I provide an overview of theoretical aspects related to the evolution of galaxies as a function of environment. I discuss the main physical processes at play, their characteristic time-scales and environmental dependency,…

宇宙学与河外天体物理 · 物理学 2016-01-27 Gabriella De Lucia

In this work, we consider four different galaxy populations and two distinct global environments in the local Universe (z $\leq 0.11$) to investigate the evolution of transitional galaxies (such as star-forming spheroids and passive discs)…

星系天体物理 · 物理学 2023-05-16 Douglas Brambila , Paulo A. A. Lopes , André L. B. Ribeiro , Arianna Cortesi

I begin by summarizing the evidence that there is a close relationship between the evolution of galaxies and supermassive black holes. They evidently share a common fuel source, and feedback from the black hole may be needed to suppress…

天体物理学 · 物理学 2015-05-13 T. M. Heckman

We complement a recent ApJ Letter by Luo et al. by comparing the fraction of starburst galaxies which are interacting with the overall fraction of interacting galaxies in the nearby galaxy population (within 40 Mpc). We confirm that in…

星系天体物理 · 物理学 2015-06-03 Johan H. Knapen , Mauricio Cisternas

Both galaxies and the intergalactic medium evolve dramatically between $z \approx 2$ and the present. These changes are coupled via galactic winds, cloud accretion, and ionizing radiation. Measurements of these interactions are critical for…

天体物理学 · 物理学 2007-05-23 Crystal L. Martin

In this contribution I introduce some of the major issues that motivate the conference, with an emphasis on how starbursts fit into the ``big picture''. I begin by defining starbursts in several different ways, and discuss the merits and…

天体物理学 · 物理学 2015-11-11 Timothy M. Heckman

Galaxy evolution reveals itself not only through the evolving properties of galaxies themselves but also through its impact on the surrounding environment. The intergalactic medium in particular holds a fossil record of past galaxy…

宇宙学与河外天体物理 · 物理学 2009-03-25 Jesper Rasmussen , Trevor J. Ponman

Observations of star formation rates (SFRs) in galaxies provide vital clues to the physical nature of the Hubble sequence, and are key probes of the evolutionary properties of galaxies. The focus of this review is on the broad patterns in…

天体物理学 · 物理学 2012-08-27 Robert C. Kennicutt,

One key problem in astrophysics is understanding how and why galaxies switch off their star formation, building the quiescent population that we observe in the local Universe. From the GAMA and VIPERS surveys, we use spectroscopic indices…

We numerically investigate stellar and gaseous dynamical evolution of mergers between five identical late-type disk galaxies with the special emphasis on star formation history and chemical evolution of multiple galaxy mergers. We found…

天体物理学 · 物理学 2009-10-31 Kenji Bekki

Advances in extragalactic astronomy have prompted the development of increasingly realistic models which aim to describe the formation and evolution of galaxies. We review the philosophy behind one such technique, called semi-analytic…

天体物理学 · 物理学 2009-11-07 C. M. Baugh , A. J. Benson , S. Cole , C. S. Frenk , C. Lacey

This review focuses on how galaxies and their globular cluster systems form. I first discuss the now fairly convincing evidence that some globular clusters form in galaxy starbursts/mergers. One way these observations are valuable is they…

天体物理学 · 物理学 2007-05-23 Stephen E. Zepf