Results 61 to 70 of about 274,405 (356)

To Be or Not to Be: Alicante-8, a Cluster or Not?

open access: yesThe Astronomical Journal, 2023
Recent surveys have uncovered new young massive clusters that host dozens of red supergiants (RSGs) near the inner Galaxy. However, many of them have still not been fully studied. Using Very Large Telescope/X-shooter near-infrared spectra, we present the
Randa Asa’d   +5 more
doaj   +1 more source

Comparing Young Massive Clusters and their Progenitor Clouds in the Milky Way [PDF]

open access: yes, 2016
Young massive clusters (YMCs) have central stellar mass surface densities exceeding $10^{4} M_{\odot} pc^{-2}$. It is currently unknown whether the stars formed at such high (proto)stellar densities.
D. Walker   +7 more
semanticscholar   +1 more source

Evidence for the Strong Effect of Gas Removal on the Internal Dynamics of Young Stellar Clusters [PDF]

open access: yes, 2006
We present detailed luminosity profiles of the young massive clusters M82-F, NGC 1569-A, and NGC 1705-1 which show significant departures from equilibrium (King and EFF) profiles.
Kroupa, N. Bastian, S. P. Goodwin
core   +2 more sources

Rotation in young massive star clusters [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2017
Hydrodynamical simulations of turbulent molecular clouds show that star clusters form from the hierarchical merger of several sub-clumps. We run smoothed-particle hydrodynamics simulations of turbulence-supported molecular clouds with mass ranging from 1700 to 43000 Msun. We study the kinematic evolution of the main cluster that forms in each cloud. We
openaire   +3 more sources

HST FUV Spectroscopy of Super Star Cluster A in the Green Pea Analog Mrk 71: Revealing the Presence of Very Massive Stars

open access: yesThe Astrophysical Journal, 2023
Mrk 71 is a low-metallicity ( Z = 0.16 Z _☉ ) starburst region in the local dwarf galaxy NGC 2366, hosting two super star clusters (SSCs A and B), and it is recognized as a Green Pea (GP) analog with SSC A responsible for the GP properties.
Linda J. Smith   +12 more
doaj   +1 more source

The ATLASGAL survey: The sample of young massive cluster progenitors [PDF]

open access: bronzeAstronomy & Astrophysics, 2017
Accepted by A&A (version after language editing). The abstract is shortened to fit the ArXiv format, and the figure quality is strongly degraded due to the size ...
T. Csengeri   +7 more
openalex   +7 more sources

Universal Upper End of the Stellar Initial Mass Function in the Young and Compact LEGUS Clusters

open access: yesThe Astrophysical Journal, 2023
We investigate the variation in the upper end of the stellar initial mass function (uIMF) in 375 young and compact star clusters in five nearby galaxies within ∼5 Mpc. All the young stellar clusters (YSCs) in the sample have ages ≲ 4 Myr and masses above
Dooseok Escher Jung   +23 more
doaj   +1 more source

Searching for GC-like abundance patterns in young massive clusters [PDF]

open access: yes, 2016
Studies during the last decade have revealed that nearly all Globular Clusters (GCs) host multiple populations (MPs) of stars with a distinctive chemical patterns in light elements. No evidence of such MPs has been found so far in lower-mass ($ 10^5$ M$_{
I. Cabrera-Ziri   +6 more
semanticscholar   +1 more source

Stellar-mass black holes in young massive and open stellar clusters – IV. Updated stellar-evolutionary and black hole spin models and comparisons with the LIGO-Virgo O1/O2 merger-event data [PDF]

open access: yesMonthly notices of the Royal Astronomical Society, 2020
I present a set of long-term, direct, relativistic many-body computations of model dense stellar clusters with up-to-date stellar-evolutionary, supernova (SN), and remnant natal-kick models, including pair instability and pulsation pair instability ...
S. Banerjee
semanticscholar   +1 more source

GOALS-JWST: Revealing the Buried Star Clusters in the Luminous Infrared Galaxy VV 114

open access: yesThe Astrophysical Journal Letters, 2023
We present the results of a James Webb Space Telescope NIRCam investigation into the young massive star cluster (YMC) population in the luminous infrared galaxy VV 114.
Sean T. Linden   +32 more
doaj   +1 more source

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