Results 21 to 30 of about 36,167 (318)
The Astrophysical Journal, 2023 We characterize the optical counterparts to the compact X-ray source population within the nearby spiral galaxy M81 using multiband Hubble Space Telescope (HST) imaging data.
Qiana Hunt +4 more
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The Global Mass Functions of 35 Galactic globular clusters: II. Clues on the Initial Mass Function and Black Hole Retention Fraction [PDF]
, 2017 In this paper we compare the mass function slopes of Galactic globular clusters recently determined by Sollima & Baumgardt (2017) with a set of dedicated N-body simulations of star clusters containing between 65,000 to 200,000 stars.
Baumgardt, Holger, Sollima, Antonio
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Variable stars in the VVV globular clusters [PDF]
EPJ Web of Conferences, 2017 The VVV survey observed some of the most crowded and most obscured regions in the inner MilkyWay during the last years. A significant sample of the less known globular clusters in our galaxy lie there. Combining the high-resolution, wide-field, nearinfrared capabilities of the survey camera, the use of 5 different filters, and multi-epoch observations,
Dante Minniti +8 more
openaire +5 more sources
Missing for 20 yr: MeerKAT Redetects the Elusive Binary Pulsar M30B
The Astrophysical Journal Letters, 2023 PSR J2140−2311B is a 13 ms pulsar discovered in 2001 in a 7.8 hr Green Bank Telescope observation of the core-collapsed globular cluster M30 and predicted to be in a highly eccentric binary orbit.
Vishnu Balakrishnan +16 more
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New Parameters for Star Cluster Dynamics: The Effect of Primordial Binaries and Dark Remnants
The Astrophysical Journal, 2023 By studying the normalized cumulative radial distribution (nCRD) of the stars in the central region of a Monte Carlo-simulated globular cluster, we recently defined three parameters able to pinpoint the stage of internal dynamical evolution reached by ...
B. Bhat +3 more
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Nature, 1888 PHYSICAL aggregations of stars may be broadly divided into “globular” and “irregular” clusters. Although, as might have been expected, the line of demarcation between the two classes is by no means sharply drawn, each has its own marked peculiarities. We shall limit our attention, in the present article, to the first kind.
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Star Formation in Violent and Normal Evolutionary Phases [PDF]
, 2001 Mergers of massive gas-rich galaxies trigger violent starbursts that - over timescales of $> 100$ Myr and regions $> 10$ kpc - form massive and compact star clusters comparable in mass and radii to Galactic globular clusters.
BC Whitmore +9 more
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The Supersonic Project: Star Formation in Early Star Clusters without Dark Matter
The Astrophysical Journal Letters, 2023 The formation mechanism of globular clusters (GCs) has long been debated by astronomers. It was recently proposed that supersonically induced gas objects (SIGOs)–which formed in the early Universe due to the supersonic relative motion of baryons and dark
William Lake +9 more
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Variable Stars and Evolution in Globular Clusters [PDF]
Symposium - International Astronomical Union, 1973 Traditionally, cluster variables have been used as distance indicators and have in this sense played an important role in our understanding of stellar evolution. In particular, the determination of the distance moduli of globular clusters and of the absolute magnitude of the main sequence turnoff, thus yielding the ages of the cluster, have relied ...
openaire +4 more sources
The ellipticities of Galactic and LMC globular clusters [PDF]
, 1997 The globular clusters of the LMC are found to be significantly more elliptical than Galactic globular clusters, but very similar in virtually all other respects. The ellipticity of the LMC globular clusters is shown not be correlated with the age or mass
Goodwin, Simon P
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