Results 11 to 20 of about 190,834 (283)

Massive young clusters in the disc of M31 [PDF]

The Astronomical Journal, 2005
We have studied the properties of a sample of 67 very blue and likely young massive clusters in M31 extracted from the Bologna Revised Catalog of globular clusters, selected according to their color [(B-V) < 0.45] and/or to the strength of their Hbeta ...
Bellazzini, M., Buzzoni, A., De Simone, E., Federici, L., Galleti, S., Pecci, F. Fusi   +5 more
core   +5 more sources

Young and intermediate-age massive star clusters [PDF]

Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2009
An overview of our current understanding of the formation and evolution of star clusters is given, with main emphasis on high-mass clusters. Clusters form deeply embedded within dense clouds of molecular gas. Left-over gas is cleared within a few million
Girardi L., Larsen S. S., Larsen S. S., Meylan G., Shapley H., Shapley H., Spitzer L., Whitmore B. C., Wielen R., Williams J. P.   +9 more
core   +4 more sources

Young massive star clusters: Achievements and challenges [PDF]

Proceedings of the International Astronomical Union, 2009
In spite of significant recent and ongoing research efforts, most of the early evolution and long-term fate of young massive star clusters remain clouded in uncertainties.
de Grijs, Richard
core   +2 more sources

NGC 3603 - a Local Template for Massive Young Clusters [PDF]

Symposium - International Astronomical Union, 2001
We present a study of the star cluster associated with the massive Galactic HII region NGC3603 based on near-IR broad-- and narrowband observations taken with ISAAC/VLT under excellent seeing conditions (
Brandl, B., Brandner, W., Eisenhauer, F., Moffat, A. F. J., Palla, F., Zinnecker, H.   +5 more
core   +5 more sources

Extremely massive young clusters in NGC 1365 [PDF]

Astronomy & 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
Galliano, E., Alloin, D., Pantin, E., Granato, G. L., Delva, P., Silva, L., Lagage, P. O., Panuzzo, P.   +7 more
openaire   +3 more sources

HOW TO FIND YOUNG MASSIVE CLUSTER PROGENITORS [PDF]

The Astrophysical Journal, 2012
We propose that bound, young massive stellar clusters form from dense clouds that have escape speeds greater than the sound speed in photo-ionized gas. In these clumps, radiative feedback in the form of gas ionization is bottled up, enabling star formation to proceed to sufficiently high efficiency so that the resulting star cluster remains bound even ...
Bressert E, Ginsburg A, Bally J, Battersby C, Longmore S, Testi L   +5 more
openaire   +2 more sources

The early evolution of young massive clusters

Astronomy & Astrophysics, 2023
Massive stars are predominantly born in stellar associations or clusters. Their radiation fields, stellar winds, and eventual supernovae have a strong impact on their local surroundings. A significant fraction of massive stars are observed to be so-called runaway stars, which travel through the galaxy at high speed.
Stoop, M., Kaper, L., de Koter, A., Guo, D., Lamers, H. J. G. L. M., Rieder, S.   +5 more
  +5 more sources

THE EVOLUTIONARY TRACKS OF YOUNG MASSIVE STAR CLUSTERS [PDF]

The Astrophysical Journal, 2014
Stars mostly form in groups consisting of a few dozen to several ten thousand members. For 30 years, theoretical models provide a basic concept of how such star clusters form and develop: they originate from the gas and dust of collapsing molecular clouds.
S. Pfalzner, G. Parmentier, M. Steinhausen, K. Vincke, K. Menten   +4 more
openaire   +2 more sources

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

Proceedings 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, K.; Bonanos, A. Z.; Pietrzynski, G.; Macri, L.; Stanek, K. Z.   +5 more
openaire   +3 more sources

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

Astronomy & Astrophysics, 2012
8 pages, 6 figures, accepted by A&A; Corrected mass estimate quoted from Negueruela et al. (2010)
Cottaar M., Meyer M. R., Andersen M., Espinoza P.   +3 more
openaire   +3 more sources