English
Related papers

Related papers: Cool Stars in Hot Places

200 papers

We use high-resolution three-dimensional adaptive mesh refinement simulations to investigate the interaction of high-redshift galaxy outflows with low-mass virialized clouds of primordial composition. While atomic cooling allows star…

Cosmology and Nongalactic Astrophysics · Physics 2021-11-24 William J Gray , Evan Scannapieco

We describe how star formation is expected to proceed in the early metal-free Universe, focusing on the very first generations of stars. We then discuss how the star formation process may change as the effects of metallicity, external…

Astrophysics · Physics 2009-06-23 Jonathan C. Tan , Christopher F. McKee

We present a model for the in situ assembly of planetary systems around a 0.5~$M_{\odot}$ star, and compare the resulting statistics to the observed sample of cool Kepler planet candidates from Dressing & Charbonneau (2013). We are able to…

Earth and Planetary Astrophysics · Physics 2015-06-19 Brad M. S. Hansen

External interactions drive galaxy stellar mass growth and morphological evolution. As stellar haloes-assembled largely via hierarchical accretion-preserve signatures of these processes, their growth probes how environment regulates galaxy…

In this paper we present a critical discussion of the algorithms commonly used in N-body simulations of Galaxy Formation to deal with the energy equation governing heating and cooling, to model star formation and the star formation rate,…

Astrophysics · Physics 2009-10-31 Fulvio Buonomo , Giovanni Carraro , Cesare Chiosi , Cesario Lia

We attempt to determine the dominant processes acting on star-forming disk galaxies as a result of the cluster environment by studying the normalised rates and radial distributions of star formation in galaxies within low-redshift clusters.…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-15 C. F. Bretherton , C. Moss , P. A. James

It has become a common practice within the exoplanet field to say that "to know the star is to know the planet." The properties of the host star have a strong, direct influence on the interior and surface conditions of the orbiting planet…

Earth and Planetary Astrophysics · Physics 2024-04-25 Natalie R. Hinkel , Allison Youngblood , Melinda Soares-Furtado

The universe's largest galaxies reside at the centers of galaxy clusters and are embedded in hot gas that, if left unchecked, would cool prodigiously and create many more new stars than are actually observed. Cooling can be regulated by…

Astrophysics of Galaxies · Physics 2015-06-22 G. M. Voit , M. Donahue , G. L. Bryan , M. McDonald

Star formation in the universe's largest galaxies---the ones at the centers of galaxy clusters---depends critically on the thermodynamic state of their hot gaseous atmospheres. Central galaxies with low-entropy, high-density atmospheres…

Astrophysics of Galaxies · Physics 2015-06-22 G. M. Voit , M. Donahue

These notes collect together current work on the effect of the environment on galaxy formation and evolution. They are broken into four distinct parts. The first deals with the observational debate surrounding the question of whether…

Astrophysics · Physics 2007-05-23 Richard G Bower

On galactic scales, the surface density of star formation appears to be well correlated with the surface density of molecular gas. This has lead many authors to suggest that there exists a causal relationship between the chemical state of…

Astrophysics of Galaxies · Physics 2015-05-28 S. C. O. Glover , P. C. Clark

Star formation generally proceeds inside-out, with overdense regions inside protostellar cores collapsing rapidly and progressively less dense regions following later. Consequently, a small protostar will form early in the evolution of a…

Astrophysics · Physics 2009-11-11 Mark R. Krumholz

The formation of the first generations of stars at redshifts z > 15-20 signaled the transition from the simple initial state of the universe to one of increasing complexity. We here review recent progress in understanding the assembly…

Astrophysics · Physics 2009-11-13 Jarrett L. Johnson , Thomas H. Greif , Volker Bromm

In this contribution I present a review of star formation in clusters. I begin by discussing the various definitions of what constitutes a star cluster, and then compare the outcome of star formation (IMF, multiplicity, mass segregation and…

Astrophysics of Galaxies · Physics 2015-06-05 Richard J. Parker

Our galaxy is full with planets. We now know that planets and planetary systems are diverse and come with different sizes, masses and compositions, as well as various orbital architectures. Although there has been great progress in…

Earth and Planetary Astrophysics · Physics 2021-12-15 Ravit Helled , Alessandro Morbidelli

Exoplanets around different types of stars provide a window into the diverse environments in which planets form. This chapter describes the observed relations between exoplanet populations and stellar properties and how they connect to…

Earth and Planetary Astrophysics · Physics 2024-03-06 Gijs D. Mulders

Using our recently improved understanding of star cluster physics, we are now within reach of answering a number of fundamental questions in contemporary astrophysics. Star cluster physics has immediate bearing on questions ranging from the…

Astrophysics of Galaxies · Physics 2011-07-06 Richard de Grijs

Young massive stars or clusters are often observed at the peripheries of HII regions. What triggers star formation at such locations? Among the scenarios that have been proposed, the `collect and collapse' process is particularly attractive…

Astrophysics · Physics 2009-11-10 L. Deharveng , A. Zavagno , J. Caplan

The enormous radiative and mechanical luminosities of massive stars impact a vast range of scales and processes, from the reionization of the universe, to the evolution of galaxies, to the regulation of the interstellar medium, to the…

Cold debris disks trace the limits of planet formation or migration in the outer regions of planetary systems, and thus have the potential to answer many of the outstanding questions in wide-orbit planet formation and evolution. We…

Earth and Planetary Astrophysics · Physics 2015-06-16 Nicholas P. Ballering , George H. Rieke , Kate Y. L. Su , Edward Montiel