Results 41 to 50 of about 274,405 (356)

Extremely massive young clusters in NGC 1365 [PDF]

open access: yesAstronomy & Astrophysics, 2008
In a previous work, three bright MIR/radio sources were discovered in the nuclear region of NGC1365. We here confirm that these sources are young and massive ``embedded'' clusters, and derive their parameters, such as extinction, age and mass. Using ISAAC and VISIR at the VLT we obtained NIR and MIR maps and LR spectra. The dataset is first interpreted
Eric Pantin   +10 more
openaire   +5 more sources

Early-forming Massive Stars Suppress Star Formation and Hierarchical Cluster Assembly

open access: yesThe Astrophysical Journal, 2023
Feedback from massive stars plays an important role in the formation of star clusters. Whether a very massive star is born early or late in the cluster formation timeline has profound implications for the star cluster formation and assembly processes. We
Sean C. Lewis   +10 more
doaj   +1 more source

On the survivability of planets in young massive clusters and its implication of planet orbital architectures in globular clusters [PDF]

open access: yesMonthly notices of the Royal Astronomical Society, 2019
As of 2019 August, among the more than 4000 confirmed exoplanets, only one has been detected in a globular cluster (GC) M4. The scarce of exoplanet detections motivates us to employ direct N-body simulations to investigate the dynamical stability of ...
Maxwell X. Cai   +3 more
semanticscholar   +1 more source

Massive Young Clusters [PDF]

open access: yes, 2005
In the last decade we have come to realize that the traditional classification of stellar clusters into open and globular clusters cannot be easily extended beyond the realm of the Milky Way, and that even for our Galaxy it is not fully valid. The main failure of the traditional classification is the existence of Massive Young Clusters (MYCs), which ...
Jesús Maíz-Apellániz   +1 more
openaire   +4 more sources

Variability of young massive stars in the Arches cluster [PDF]

open access: yesProceedings of the International Astronomical Union, 2010
AbstractWe present preliminary results of the first near-infrared variability study of the Arches cluster, using adaptive optics data from NIRI/Gemini and NACO/VLT. The goal is to discover eclipsing binaries in this young (2.5 ± 0.5 Myr), dense, massive cluster for which we will determine accurate fundamental parameters with subsequent spectroscopy ...
Markakis   +5 more
openaire   +5 more sources

X3: A High-mass Young Stellar Object Close to the Supermassive Black Hole Sgr A*

open access: yesThe Astrophysical Journal, 2023
To date, the proposed observation of young stellar objects (YSOs) in the Galactic center still raises the question of where and how these objects could have formed due to the violent vicinity of Sgr A*.
Florian Peißker   +12 more
doaj   +1 more source

Young massive clusters in the interacting LIRG Arp 299: evidence for the dependence of star cluster formation and evolution on environment [PDF]

open access: yesMonthly notices of the Royal Astronomical Society, 2018
Archival WFC3/UVIS imaging of Arp 299 (NGC 3690E + NGC 3690W) is retrieved to investigate the young massive cluster (YMC) population of this ongoing merger. We extract 2182 cluster candidates, including 1323 high confidence photometric sources. Multiband
Z. Randriamanakoto   +3 more
semanticscholar   +1 more source

No evidence of mass segregation in massive young clusters [PDF]

open access: yesAstronomy & Astrophysics, 2009
Aims. We investigate the validity of the mass segregation indicators commonly used in analysing young stellar clusters. Methods. We simulate observations by constructing synthetic seeing-limited images of a 1000 massive clusters (10^4 Msun) with a standard IMF and a King-density distribution function. Results.
Joana Ascenso   +3 more
openaire   +5 more sources

Is the massive young cluster Westerlund I bound? [PDF]

open access: yesAstronomy & Astrophysics, 2012
8 pages, 6 figures, accepted by A&A; Corrected mass estimate quoted from Negueruela et al. (2010)
Cottaar M.   +3 more
openaire   +4 more sources

An HST Study of the Substellar Population of NGC 2024

open access: yesThe Astrophysical Journal, 2023
We performed an HST/WFC3-IR imaging survey of the young stellar cluster NGC 2024 in three filters probing the 1.4 μ m H _2 O absorption feature, characteristic of the population of low-mass and substellar-mass objects down to a few Jupiter masses.
Massimo Robberto   +8 more
doaj   +1 more source

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