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Related papers: Stellar populations in STARFORGE II: Comparison wi…

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Recent studies have started to cast doubt on the assumption that most stars are formed in clusters. Observational studies of field stars and star cluster systems in nearby galaxies can lead to better constraints on the fraction of stars…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-27 Esteban Silva-Villa , Soeren Larsen

We explore how the group environment may affect the evolution of star-forming galaxies. We select 1197 Galaxy And Mass Assembly (GAMA) groups at $0.05\leq z \leq 0.2$ and analyze the projected phase space (PPS) diagram, i.e. the galaxy…

We investigate the properties and evolution of star particles in two simulations of isolated spiral galaxies, and two galaxies from cosmological simulations. Unlike previous numerical work, where typically each star particle represents one…

Through an extensive set of realistic synthetic observations (produced in Paper I), we assess in this part of the paper series (Paper III) how the choice of observational techniques affects the measurement of star-formation rates (SFRs) in…

Solar and Stellar Astrophysics · Physics 2017-11-01 Christine M. Koepferl , Thomas P. Robitaille , James E. Dale

The implementation of star formation and stellar feedback in cosmological simulations plays a critical role in shaping galaxy properties. In the first paper of the series, we presented a new method to model star formation as a collection of…

Astrophysics of Galaxies · Physics 2018-07-25 Hui Li , Oleg Y. Gnedin , Nickolay Y. Gnedin

We investigate the formation processes of the Galactic globular cluster (GC) omega Cen with multiple stellar populations based on our original hydrodynamical simulations with chemical enrichment by Type II supernovae (SNe II), asymptotic…

Astrophysics of Galaxies · Physics 2020-01-08 Kenji Bekki , Takuji Tsujimoto

The effects which star cluster concentration and binarity have on observable parameters, that characterise the dynamical state of a population of stars after their birth aggregate dissolves, are investigated. To this end, the correlations…

Astrophysics · Physics 2009-10-30 Pavel Kroupa

It has been argued that the specific star formation rates of star forming galaxies inferred from observational data decline more rapidly below z = 2 than is predicted by hierarchical galaxy formation models. We present a detailed analysis…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-19 Peter D. Mitchell , Cedric G. Lacey , Shaun Cole , Carlton M. Baugh

Observations of the nearby large galaxies that can be examined in particularly close detail suggest that many have small stellar luminosity fractions in bulges and haloes. Simulations of galaxy formation tend to produce considerably larger…

Astrophysics of Galaxies · Physics 2020-09-09 P. J. E. Peebles

Stars form predominantly in groups usually denoted as clusters or associations. The observed stellar groups display a broad spectrum of masses, sizes and other properties, so it is often assumed that there is no underlying structure in this…

Solar and Stellar Astrophysics · Physics 2016-02-03 S. Pfalzner , H. Kirk , A. Sills , J. S. Urquhart , J. Kauffmann , M. A. Kuhn , A. Bhandare , K. M. Menten

The formation and evolution of young star clusters and OB associations is fundamental to our understanding of the star formation process, the conditions faced by young binary and planetary systems, and the formation of long-lived open and…

Solar and Stellar Astrophysics · Physics 2019-03-06 Nicholas J. Wright

We investigate the environmental dependence of galaxies with star formation from a volume-limited sample of 4782 nearby field galaxy spectra extracted from the 2dF Galaxy Redshift Survey final data release. The environment is characterized…

Astrophysics · Physics 2009-11-10 Abilio Mateus , Laerte Sodre

We present FUSE spectroscopy and supporting data for star-forming regions in nearby galaxies, to examine their massive-star content and explore the use of abundance and population indicators in this spectral range for high-redshift…

Astrophysics · Physics 2009-11-10 William C. Keel , Jay B. Holberg , Patrick M. Treuthardt

The main sequence (MS) of star-forming galaxies (SFGs) is the tight relation between the galaxy stellar mass and its star formation rate (SFR) and was observed up to z ~ 6. The MS relation can be used as a reference for understanding the…

We employ a large sample of 20171 optically-selected groups and clusters at 0.15 < z < 0.4 in the SDSS to investigate how the stacked stellar mass fraction varies across a wide range of total mass, $M_{500}$. Our study improves upon…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-17 J. M. Budzynski , S. E. Koposov , I. G. McCarthy , V. Belokurov

We present results from a systematic study of star formation in local galaxy clusters using 22 micron data from the Wide-field Infrared Survey Explorer (WISE). The 69 systems in our sample are drawn from the Cluster Infall Regions Survey…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-30 Sun Mi Chung , Peter R. Eisenhardt , Anthony H. Gonzalez , Spencer A. Stanford , Mark Brodwin , Daniel Stern , Thomas Jarrett

We identify stellar structures in the PHANGS sample of 74 nearby galaxies and construct morphological masks of sub-galactic environments based on Spitzer 3.6 micron images. At the simplest level, we distinguish centres, bars, spiral arms,…

Although the basic physics of star formation is classical, numerical simulations have yielded essential insights into how stars form. They show that star formation is a highly nonuniform runaway process characterized by the emergence of…

Astrophysics · Physics 2008-11-26 Richard B. Larson

We trace the specific star formation rate (sSFR) of massive star-forming galaxies ($\gtrsim\!10^{10}\,\mathcal{M}_\odot$) from $z\sim2$ to 7. Our method is substantially different from previous analyses, as it does not rely on direct…

Astrophysics of Galaxies · Physics 2018-01-31 Iary Davidzon , Olivier Ilbert , Andreas L. Faisst , Martin Sparre , Peter L. Capak

Recent observations show that small, young, stellar groupings of ~10 to 40 members tend of have a centrally-located most massive member, reminiscent of mass segregation seen in large clustered systems. Here, we analyze hydrodynamic…

Astrophysics of Galaxies · Physics 2015-06-18 Helen Kirk , Stella S. R. Offner , Kayla Redmond