The big problems in star formation: the star formation rate, stellar clustering, and the initial mass function

MR Krumholz - Physics Reports, 2014 - Elsevier
Star formation lies at the center of a web of processes that drive cosmic evolution:
generation of radiant energy, synthesis of elements, formation of planets, and development …

The role of magnetic fields in setting the star formation rate and the initial mass function

MR Krumholz, C Federrath - Frontiers in Astronomy and Space …, 2019 - frontiersin.org
Star-forming gas clouds are strongly magnetized, and their ionization fractions are high
enough to place them close to the regime of ideal magnetohydrodyamics on all but the …

Massive star formation

JC Tan, MT Beltrán, P Caselli, F Fontani… - arxiv preprint arxiv …, 2014 - arxiv.org
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 …

When did the initial mass function become bottom-heavy?

P Sharda, MR Krumholz - Monthly Notices of the Royal …, 2022 - academic.oup.com
The characteristic mass that sets the peak of the stellar initial mass function (IMF) is closely
linked to the thermodynamic behaviour of interstellar gas, which controls how gas fragments …

Impact of metallicity and star formation rate on the time-dependent, galaxy-wide stellar initial mass function

T Jeřábková, AH Zonoozi, P Kroupa, G Beccari… - Astronomy & …, 2018 - aanda.org
The stellar initial mass function (IMF) is commonly assumed to be an invariant probability
density distribution function of initial stellar masses. These initial stellar masses are …

The most massive stars in very young star clusters with a limited mass: Evidence favours significant self-regulation in the star formation processes

Z Yan, T Jerabkova, P Kroupa - Astronomy & Astrophysics, 2023 - aanda.org
The stellar initial mass function (IMF) is commonly interpreted to be a scale-invariant
probability density distribution function (PDF) such that many small clusters yield the same …

Galaxies as simple dynamical systems: observational data disfavor dark matter and stochastic star formation

P Kroupa - Canadian Journal of Physics, 2015 - cdnsciencepub.com
According to modern theory, galactic evolution is driven by the dynamics of dark matter and
stochastic star formation, but galaxies are observed to be simple systems. The existence of …

3D morphology of open clusters in the solar neighborhood with Gaia EDR 3: its relation to cluster dynamics

X Pang, Y Li, Z Yu, SY Tang, F Dinnbier… - The Astrophysical …, 2021 - iopscience.iop.org
We analyze the 3D morphology and kinematics of 13 open clusters (OCs) located within 500
pc of the Sun, using Gaia EDR 3 and kinematic data from the literature. Members of OCs are …

The Spitzer space telescope survey of the Orion A and B molecular clouds. II. The spatial distribution and demographics of dusty young stellar objects

ST Megeath, R Gutermuth, J Muzerolle… - The Astronomical …, 2015 - iopscience.iop.org
We analyze the spatial distribution of dusty young stellar objects (YSOs) identified in the
Spitzer Survey of the Orion Molecular clouds, augmenting these data with Chandra X-ray …

Connecting young star clusters to CO molecular gas in NGC 7793 with ALMA–LEGUS

K Grasha, D Calzetti, L Bittle… - Monthly Notices of …, 2018 - academic.oup.com
We present an investigation of the relationship between giant molecular cloud (GMC)
properties and the associated stellar clusters in the nearby flocculent galaxy NGC 7793. We …